{"id":68,"date":"2015-06-17T14:33:42","date_gmt":"2015-06-17T06:33:42","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=68"},"modified":"2018-12-17T20:32:30","modified_gmt":"2018-12-17T12:32:30","slug":"%e6%b7%b1%e5%85%a5%e6%b5%85%e5%87%basymfony2-%e7%bb%93%e5%90%88mongodb%e5%bc%80%e5%8f%91lbs%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=68","title":{"rendered":"\u6df1\u5165\u6d45\u51faSymfony2 – \u7ed3\u5408MongoDB\u5f00\u53d1LBS\u5e94\u7528"},"content":{"rendered":"
\u7b80\u4ecb<\/div>\n
\u968f\u7740\u8fd1\u51e0\u5e74\u5404\u7c7b\u79fb\u52a8\u7ec8\u7aef\u7684\u8fc5\u901f\u666e\u53ca\uff0c\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u7684\u670d\u52a1\uff08LBS\uff09\u548c\u76f8\u5173\u5e94\u7528\u4e5f\u8d8a\u6765\u8d8a\u591a\uff0c\u800c\u652f\u6491\u8fd9\u4e9b\u5e94\u7528\u7684\u6700\u57fa\u7840\u6280\u672f\u4e4b\u4e00\uff0c\u5c31\u662f\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u5904\u7406\u3002\u6211\u6240\u5728\u7684\u9879\u76ee\u4e5f\u6b63\u4ece\u4e8b\u76f8\u5173\u7cfb\u7edf\u7684\u5f00\u53d1\uff0c\u6211\u4eec\u4f7f\u7528\u7684\u662fSymfony2+Doctrine2 ODM+MongoDB\u7684\u7ec4\u5408\u3002<\/div>\n
<\/div>\n
\u6211\u4eec\u5c06\u8fd9\u4e9b\u6280\u672f\u8981\u70b9\u6574\u7406\u6210\u6587\uff0c\u5e0c\u671b\u80fd\u591f\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\u548c\u6848\u4f8b\uff0c\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u4f7f\u7528MongoDB\u8fdb\u884c\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u67e5\u8be2\u548c\u5904\u7406\u3002\u5728\u6587\u7ae0\u7684\u5f00\u5934\uff0c\u6211\u4eec\u4e5f\u4f1a\u5148\u4ecb\u7ecd\u4e00\u4e0b\u4e1a\u754c\u901a\u5e38\u7528\u6765\u5904\u7406\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u4e00\u4e9b\u65b9\u6848\u5e76\u8fdb\u884c\u6bd4\u8f83\uff0c\u8ba9\u8bfb\u8005\u9010\u6b65\u4e86\u89e3\u4f7f\u7528MongoDB\u67e5\u8be2\u53ca\u5904\u7406\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u4f18\u52bf\u3002<\/div>\n
<\/div>\n
\u672c\u6587\u4f7f\u7528\u4e86Symfony2\u548cDoctrine2\u4f5c\u4e3aWeb\u5e94\u7528\u7684\u5f00\u53d1\u6846\u67b6\uff0c\u5bf9\u4e8e\u60f3\u4e86\u89e3Symfony2\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u8bfb\u8005\u6765\u8bf4\u9605\u8bfb\u672c\u6587\u4e5f\u53ef\u4ee5\u4e86\u89e3\u548c\u638c\u63e1\u76f8\u5173\u7684\u6280\u672f\u548c\u4f7f\u7528\u65b9\u6cd5\u3002<\/div>\n
<\/div>\n
<\/div>\n
1. LBS\u7c7b\u5e94\u7528\u7279\u70b9<\/div>\n
<\/div>\n
\u4e0d\u7ba1\u662f\u4ec0\u4e48LBS\u5e94\u7528\uff0c\u4e00\u4e2a\u5171\u540c\u7684\u7279\u70b9\u5c31\u662f\uff1a\u4ed6\u4eec\u7684\u6570\u636e\u90fd\u6216\u591a\u6216\u5c11\u5305\u542b\u4e86\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u3002\u800c\u5982\u4f55\u5bf9\u8fd9\u4e9b\u4fe1\u606f\u8fdb\u884c\u67e5\u8be2\u3001\u5904\u7406\u3001\u5206\u6790\uff0c\u4e5f\u5c31\u6210\u4e3a\u4e86\u652f\u6491LBS\u5e94\u7528\u7684\u6700\u57fa\u7840\u4e5f\u662f\u6700\u5173\u952e\u7684\u6280\u672f\u95ee\u9898\u3002<\/div>\n
<\/div>\n
\u800c\u7531\u4e8e\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u7279\u6b8a\u6027\uff0c\u5728\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u6709\u6bd4\u8f83\u96be\u4ee5\u5904\u7406\u7684\u95ee\u9898\u51fa\u73b0\uff0c\u6bd4\u5982\uff1a\u7531\u4e8e\u7528\u6237\u6240\u5728\u4f4d\u7f6e\u7684\u4e0d\u56fa\u5b9a\u6027\uff0c\u7528\u6237\u53ef\u80fd\u4f1a\u5728\u5f88\u5c0f\u8303\u56f4\u5185\u79fb\u52a8\uff0c\u800c\u6b64\u65f6\u7ecf\u7eac\u5ea6\u503c\u4e5f\u4f1a\u968f\u4e4b\u53d8\u5316\uff1b\u751a\u81f3\u5728\u540c\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u901a\u8fc7GPS\u8bbe\u5907\u83b7\u53d6\u5230\u7684\u4f4d\u7f6e\u4fe1\u606f\u4e5f\u53ef\u80fd\u4e0d\u4e00\u6837\u3002\u6240\u4ee5\u5982\u679c\u901a\u8fc7\u7ecf\u7eac\u5ea6\u53bb\u83b7\u53d6\u5468\u8fb9\u4fe1\u606f\u65f6\uff0c\u5c31\u5f88\u96be\u50cf\u4f20\u7edf\u6570\u636e\u5e93\u90a3\u6837\u505a\u67e5\u8be2\u5e76\u8fdb\u884c\u7f13\u5b58\u3002<\/div>\n
<\/div>\n
\u5bf9\u4e8e\u8fd9\u4e2a\u95ee\u9898\uff0c\u6709\u8bfb\u8005\u53ef\u80fd\u4f1a\u8bf4\u6709\u522b\u7684\u5904\u7406\u65b9\u6848\uff0c\u6ca1\u9519\uff0c\u6bd4\u5982\u53ea\u6309\u7ecf\u7eac\u5ea6\u56fa\u5b9a\u7684\u51e0\u4f4d\u5c0f\u6570\u70b9\u505a\u7d22\u5f15\uff0c\u6bd4\u5982\u6309\u77e9\u9635\u5c06\u7528\u6237\u5212\u5206\u5230\u67d0\u56fa\u5b9a\u5c0f\u8303\u56f4\u7684\u533a\u57df\uff08\u53ef\u4ee5\u53c2\u8003\u540e\u6587\u5c06\u4f1a\u63d0\u5230\u7684geohash\uff09\u7b49\u65b9\u5f0f\uff0c\u867d\u7136\u53ef\u4ee5\u7ed5\u4e2a\u5f2f\u5b50\u89e3\u51b3\uff0c\u4f46\u6216\u591a\u6216\u5c11\u64cd\u4f5c\u8d77\u6765\u6bd4\u8f83\u9ebb\u70e6\uff0c\u4e5f\u4f1a\u727a\u7272\u4e00\u4e9b\u7cbe\u5ea6\uff0c\u751a\u81f3\u65e0\u6cd5\u505a\u5230\u6027\u80fd\u7684\u6700\u4f18\u5316\uff0c\u6240\u4ee5\u4e0d\u80fd\u7b97\u4f5c\u662f\u6700\u4f73\u7684\u89e3\u51b3\u529e\u6cd5\u3002<\/div>\n
<\/div>\n
\u800c\u6700\u8fd1\u51e0\u5e74\uff0c\u76f4\u63a5\u652f\u6301\u5730\u7406\u4f4d\u7f6e\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u5c42\u51fa\u4e0d\u7a77\uff0c\u5176\u64cd\u4f5c\u53cb\u597d\u3001\u6027\u80fd\u9ad8\u7684\u7279\u6027\u4e5f\u5f00\u59cb\u88ab\u6211\u4eec\u6162\u6162\u91cd\u89c6\u8d77\u6765\uff0c\u5176\u4e2d\u7684\u4f7c\u4f7c\u8005\u5f53\u5c5eMongoDB\u3002<\/div>\n
<\/div>\n
MongoDB\u5728\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u5904\u7406\u4e0a\u6709\u4ec0\u4e48\u4f18\u52bf\uff1f\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u6848\u4f8b\u6765\u5bf9\u6bd4\u4e00\u4e0b\u5404\u79cd\u6280\u672f\u65b9\u6848\u4e4b\u95f4\u8fdb\u884c\u8fdb\u884c\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u5904\u7406\u7684\u5dee\u5f02\u3002<\/div>\n
<\/div>\n
2. \u51e0\u4e2a\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u5904\u7406\u65b9\u6848\u7684\u5bf9\u6bd4\u548c\u5206\u6790<\/div>\n
<\/div>\n
1. \u786e\u5b9a\u529f\u80fd\u9700\u6c42<\/div>\n
<\/div>\n
\u5bf9\u4e8e\u4efb\u4f55LBS\u5e94\u7528\u6765\u8bf4\uff0c\u8ba9\u7528\u6237\u5bfb\u627e\u5468\u56f4\u7684\u597d\u53cb\u53ef\u80fd\u90fd\u662f\u4e00\u4e2a\u5fc5\u4e0d\u53ef\u5c11\u7684\u529f\u80fd\uff0c\u6211\u4eec\u5c31\u4ee5\u8fd9\u4e2a\u529f\u80fd\u4e3a\u4f8b\uff0c\u6765\u770b\u770b\u5404\u79cd\u5904\u7406\u65b9\u6848\u4e4b\u95f4\u7684\u5dee\u5f02\u548c\u533a\u522b\u3002<\/div>\n
<\/div>\n
\u6211\u4eec\u5047\u8bbe\u6709\u5982\u4e0b\u529f\u80fd\u9700\u6c42\uff1a<\/div>\n
<\/div>\n
\u663e\u793a\u6211\u9644\u8fd1\u7684\u4eba<\/div>\n
\u7531\u8fd1\u5230\u8fdc\u6392\u5e8f<\/div>\n
\u663e\u793a\u8ddd\u79bb<\/div>\n
2. \u53ef\u80fd\u7684\u6280\u672f\u65b9\u6848<\/div>\n
<\/div>\n
\u6392\u9664\u4e00\u4e9b\u4e0d\u901a\u7528\u548c\u96be\u4ee5\u5b9e\u73b0\u7684\u6280\u672f\uff0c\u6211\u4eec\u7f57\u5217\u51fa\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6848\uff1a<\/div>\n
<\/div>\n
\u57fa\u4e8eMySQL\u6570\u636e\u5e93<\/div>\n
\u91c7\u7528GeoHash\u7d22\u5f15\uff0c\u57fa\u4e8eMySQL<\/div>\n
MySQL\u7a7a\u95f4\u5b58\u50a8\uff08MySQL Spatial Extensions\uff09<\/div>\n
\u4f7f\u7528MongoDB\u5b58\u50a8\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f<\/div>\n
\u6211\u4eec\u4e00\u4e2a\u4e2a\u6765\u5206\u6790\u8fd9\u51e0\u79cd\u65b9\u6848\u3002<\/div>\n
<\/div>\n
\u65b9\u68481\uff1a\u57fa\u4e8eMySQL\u6570\u636e\u5e93<\/div>\n
MySQL\u7684\u4f7f\u7528\u975e\u5e38\u7b80\u5355\u3002\u5bf9\u4e8e\u5927\u90e8\u5206\u5df2\u7ecf\u4f7f\u7528MySQL\u7684\u7f51\u7ad9\u6765\u8bf4\uff0c\u4f7f\u7528\u8fd9\u79cd\u65b9\u6848\u6ca1\u6709\u4efb\u4f55\u8fc1\u79fb\u548c\u90e8\u7f72\u6210\u672c\u3002<\/div>\n
<\/div>\n
\u800c\u5728MySQL\u4e2d\u67e5\u8be2\u201c\u6700\u8fd1\u7684\u4eba\u201d\u4e5f\u4ec5\u9700\u4e00\u6761SQL\u5373\u53ef,<\/div>\n
<\/div>\n
SELECT id, ( 6371 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians<\/div>\n
( lng ) – radians(-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) ) AS distance<\/div>\n
\u00a0FROM places HAVING distance < 25 ORDER BY distance LIMIT 0 , 100;<\/div>\n
\u6ce8\uff1a\u8fd9\u6761SQL\u67e5\u8be2\u7684\u662f\u5728lat,lng\u8fd9\u4e2a\u5750\u6807\u9644\u8fd1\u7684\u76ee\u6807\uff0c\u5e76\u4e14\u6309\u8ddd\u79bb\u6b63\u5e8f\u6392\u5217\uff0cSQL\u4e2d\u7684distance\u5355\u4f4d\u4e3a\u516c\u91cc\u3002<\/div>\n
<\/div>\n
\u4f46\u4f7f\u7528SQL\u8bed\u53e5\u8fdb\u884c\u67e5\u8be2\u7684\u7f3a\u70b9\u4e5f\u663e\u800c\u6613\u89c1\uff0c\u6bcf\u6761SQL\u7684\u8ba1\u7b97\u91cf\u90fd\u4f1a\u975e\u5e38\u5927\uff0c\u6027\u80fd\u5c06\u4f1a\u662f\u4e25\u91cd\u7684\u95ee\u9898\u3002<\/div>\n
<\/div>\n
\u5148\u522b\u653e\u5f03\uff0c\u6211\u4eec\u5c1d\u8bd5\u5bf9\u8fd9\u6761SQL\u505a\u4e00\u4e9b\u4f18\u5316\u3002<\/div>\n
<\/div>\n
\u53ef\u4ee5\u5c06\u5706\u5f62\u533a\u57df\u62bd\u8c61\u4e3a\u6b63\u65b9\u5f62\uff0c\u5982\u4e0b\u56fe<\/div>\n
\"1\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\u6839\u636e\u7ef4\u57fa\u767e\u79d1\u4e0a\u7684\u7403\u9762\u8ba1\u7b97\u516c\u5f0f\uff0c\u53ef\u4ee5\u6839\u636e\u5706\u5fc3\u5750\u6807\u8ba1\u7b97\u51fa\u6b63\u65b9\u5f62\u56db\u4e2a\u70b9\u7684\u5750\u6807\u3002<\/div>\n
<\/div>\n
\u7136\u540e\uff0c\u67e5\u8be2\u8fd9\u4e2a\u6b63\u65b9\u5f62\u5185\u7684\u76ee\u6807\u70b9\u3002<\/div>\n
<\/div>\n
SQL\u8bed\u53e5\u53ef\u4ee5\u7b80\u5316\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
SELECT * FROM places WHERE ((lat BETWEEN ? AND ?) AND (lng BETWEEN ? AND ?))<\/div>\n
\u8fd9\u6837\u4f18\u5316\u540e\uff0c\u867d\u7136\u6570\u636e\u4e0d\u5b8c\u5168\u7cbe\u786e\uff0c\u4f46\u6027\u80fd\u63d0\u5347\u5f88\u660e\u663e\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u7ed9lat lng\u5b57\u6bb5\u505a\u7d22\u5f15\u7684\u65b9\u5f0f\u8fdb\u4e00\u6b65\u52a0\u5feb\u8fd9\u6761SQL\u7684\u67e5\u8be2\u901f\u5ea6\u3002\u5bf9\u7cbe\u5ea6\u6709\u8981\u6c42\u7684\u5e94\u7528\u4e5f\u53ef\u4ee5\u5728\u8fd9\u4e2a\u7ed3\u679c\u4e0a\u518d\u8fdb\u884c\u8ba1\u7b97\uff0c\u6392\u9664\u90a3\u4e9b\u5728\u65b9\u5757\u8303\u56f4\u5185\u4f46\u4e0d\u5728\u539f\u578b\u8303\u56f4\u5185\u7684\u6570\u636e\uff0c\u5df2\u8fbe\u5230\u5bf9\u7cbe\u5ea6\u7684\u8981\u6c42\u3002<\/div>\n
<\/div>\n
\u53ef\u662f\u8fd9\u6837\u67e5\u8be2\u51fa\u6765\u7684\u7ed3\u679c\uff0c\u662f\u6ca1\u6709\u6392\u5e8f\u7684\uff0c\u9664\u975e\u518d\u8fdb\u884c\u4e00\u4e9bSQL\u8ba1\u7b97\u3002\u4f46\u90a3\u53c8\u4f1a\u5728\u67e5\u8be2\u7684\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u4e34\u65f6\u8868\u6392\u5e8f\uff0c\u53ef\u80fd\u4f1a\u9020\u6210\u6027\u80fd\u95ee\u9898\u3002<\/div>\n
<\/div>\n
\u65b9\u68482\uff1aGeoHash\u7d22\u5f15\uff0c\u57fa\u4e8eMySQL<\/div>\n
GeoHash\u662f\u4e00\u79cd\u5730\u5740\u7f16\u7801\uff0c\u901a\u8fc7\u5207\u5206\u5730\u56fe\u533a\u57df\u4e3a\u5c0f\u65b9\u5757\uff08\u5207\u5206\u6b21\u6570\u8d8a\u591a\uff0c\u7cbe\u5ea6\u8d8a\u9ad8\uff09\uff0c\u5b83\u80fd\u628a\u4e8c\u7ef4\u7684\u7ecf\u7eac\u5ea6\u7f16\u7801\u6210\u4e00\u7ef4\u7684\u5b57\u7b26\u4e32\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7406\u8bba\u4e0ageohash\u5b57\u7b26\u4e32\u8868\u793a\u7684\u5e76\u4e0d\u662f\u4e00\u4e2a\u70b9\uff0c\u800c\u662f\u4e00\u4e2a\u77e9\u5f62\u533a\u57df\uff0c\u53ea\u8981\u77e9\u5f62\u533a\u57df\u8db3\u591f\u5c0f\uff0c\u8fbe\u5230\u6240\u9700\u7cbe\u5ea6\u5373\u53ef\u3002\uff08\u5176\u5b9eMongoDB\u7684\u7d22\u5f15\u4e5f\u662f\u57fa\u4e8egeohash\uff09<\/div>\n
<\/div>\n
\u5982\uff1awtw3ued9m\u5c31\u662f\u76ee\u524d\u6211\u6240\u5728\u7684\u4f4d\u7f6e\uff0c\u964d\u4f4e\u4e00\u4e9b\u7cbe\u5ea6\uff0c\u5c31\u4f1a\u662fwtw3ued\uff0c\u518d\u964d\u4f4e\u4e00\u4e9b\u7cbe\u5ea6\uff0c\u5c31\u4f1a\u662fwtw3u\u3002\uff08\u70b9\u51fb\u94fe\u63a5\u67e5\u770b\u5750\u6807\u7f16\u7801\u5bf9\u5e94Google\u5730\u56fe\u7684\u4f4d\u7f6e\uff09<\/div>\n
<\/div>\n
\u6240\u4ee5\u8fd9\u6837\u4e00\u6765\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5728MySQL\u4e2d\u7528LIKE \u2018wtw3u%\u2019\u6765\u9650\u5b9a\u533a\u57df\u8303\u56f4\u67e5\u8be2\u76ee\u6807\u70b9\uff0c\u5e76\u4e14\u53ef\u4ee5\u5bf9\u7ed3\u679c\u96c6\u505a\u7f13\u5b58\u3002\u66f4\u4e0d\u4f1a\u56e0\u4e3a\u5fae\u5c0f\u7684\u7ecf\u7eac\u5ea6\u53d8\u5316\u800c\u65e0\u6cd5\u7528\u4e0a\u6570\u636e\u5e93\u7684Query Cache\u3002<\/div>\n
<\/div>\n
\u8fd9\u79cd\u65b9\u6848\u7684\u4f18\u70b9\u663e\u800c\u6613\u89c1\uff0c\u4ec5\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32\u4fdd\u5b58\u7ecf\u7eac\u5ea6\u4fe1\u606f\uff0c\u5e76\u4e14\u7cbe\u5ea6\u7531\u5b57\u7b26\u4e32\u4ece\u5934\u5230\u5c3e\u7684\u957f\u5ea6\u51b3\u5b9a\uff0c\u53ef\u4ee5\u65b9\u4fbf\u7d22\u5f15\u3002<\/div>\n
<\/div>\n
\u4f46\u8fd9\u79cd\u65b9\u6848\u7684\u7f3a\u70b9\u662f\uff1a\u4ecegeohash\u7684\u7f16\u7801\u7b97\u6cd5\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u9760\u8fd1\u6bcf\u4e2a\u65b9\u5757\u8fb9\u754c\u4e24\u4fa7\u7684\u70b9\u867d\u7136\u5341\u5206\u63a5\u8fd1\uff0c\u4f46\u6240\u5c5e\u7684\u7f16\u7801\u4f1a\u5b8c\u5168\u4e0d\u540c\u3002\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u867d\u7136\u53ef\u4ee5\u901a\u8fc7\u53bb\u641c\u7d22\u73af\u7ed5\u5f53\u524d\u65b9\u5757\u5468\u56f4\u76848\u4e2a\u65b9\u5757\u6765\u89e3\u51b3\u8be5\u95ee\u9898\uff0c\u4f46\u4e00\u4e0b\u5b50\u5c06\u539f\u6765\u53ea\u9700\u89811\u6b21SQL\u67e5\u8be2\u53d8\u6210\u4e86\u9700\u8981\u67e5\u8be29\u6b21\uff0c\u8fd9\u6837\u4e0d\u4ec5\u589e\u5927\u4e86\u67e5\u8be2\u91cf\uff0c\u4e5f\u5c06\u539f\u672c\u7b80\u5355\u7684\u65b9\u6848\u590d\u6742\u5316\u4e86\u3002<\/div>\n
<\/div>\n
\u9664\u6b64\u4e4b\u5916\uff0c\u8fd9\u4e2a\u65b9\u6848\u4e5f\u65e0\u6cd5\u76f4\u63a5\u5f97\u5230\u8ddd\u79bb\uff0c\u9700\u8981\u7a0b\u5e8f\u534f\u52a9\u8fdb\u884c\u540e\u7eed\u7684\u6392\u5e8f\u8ba1\u7b97\u3002<\/div>\n
<\/div>\n
\u65b9\u68483\uff1aMySQL\u7a7a\u95f4\u5b58\u50a8<\/div>\n
MySQL\u7684\u7a7a\u95f4\u6269\u5c55\uff08MySQL Spatial Extensions\uff09\uff0c\u5b83\u5141\u8bb8\u5728MySQL\u4e2d\u76f4\u63a5\u5904\u7406\u3001\u4fdd\u5b58\u548c\u5206\u6790\u5730\u7406\u4f4d\u7f6e\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u770b\u8d77\u6765\u8fd9\u662f\u4f7f\u7528MySQL\u5904\u7406\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u201c\u5b98\u65b9\u89e3\u51b3\u65b9\u6848\u201d\u3002\u4f46\u6070\u6070\u5f88\u53ef\u60dc\u7684\u662f\uff1a\u5b83\u5374\u4e0d\u652f\u6301\u67d0\u4e9b\u6700\u57fa\u672c\u7684\u5730\u7406\u4f4d\u7f6e\u64cd\u4f5c\uff0c\u6bd4\u5982\u67e5\u8be2\u5728\u534a\u5f84\u8303\u56f4\u5185\u7684\u6240\u6709\u6570\u636e\u3002\u5b83\u751a\u81f3\u8fde\u4e24\u5750\u6807\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u8ba1\u7b97\u65b9\u6cd5\u90fd\u6ca1\u6709\uff08MySQL Spatial\u7684distance\u65b9\u6cd5\u57285.*\u7248\u672c\u4e2d\u4e0d\u652f\u6301\uff09<\/div>\n
<\/div>\n
\u5b98\u65b9\u6307\u5357\u7684\u505a\u6cd5\u662f\u8fd9\u6837\u7684\uff1a<\/div>\n
<\/div>\n
GLength(LineStringFromWKB(LineString(point1, point2)))<\/div>\n
\u8fd9\u6761\u8bed\u53e5\u7684\u5904\u7406\u903b\u8f91\u662f\u5148\u901a\u8fc7\u4e24\u4e2a\u70b9\u4ea7\u751f\u4e00\u4e2aLineString\u7684\u7c7b\u578b\u7684\u6570\u636e\uff0c\u7136\u540e\u8c03\u7528GLength\u5f97\u5230\u8fd9\u4e2aLineString\u7684\u5b9e\u9645\u957f\u5ea6\u3002<\/div>\n
<\/div>\n
\u8fd9\u4e48\u505a\u867d\u7136\u6709\u4e9b\u590d\u6742\uff0c\u8c8c\u4f3c\u4e5f\u89e3\u51b3\u4e86\u8ddd\u79bb\u8ba1\u7b97\u7684\u95ee\u9898\uff0c\u4f46\u8bfb\u8005\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a\u8fd9\u79cd\u65b9\u6cd5\u8ba1\u7b97\u7684\u662f\u6b27\u5f0f\u7a7a\u95f4\u7684\u8ddd\u79bb\uff0c\u7b80\u5355\u6765\u8bf4\uff0c\u5b83\u7ed9\u51fa\u7684\u7ed3\u679c\u662f\u4e24\u4e2a\u70b9\u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u7684\u76f4\u7ebf\u8ddd\u79bb\uff0c\u4e0d\u662f\u98de\u673a\u5728\u5730\u7403\u4e0a\u98de\u7684\u90a3\u6761\u8f68\u8ff9\uff0c\u800c\u662f\u7b14\u76f4\u7a7f\u8fc7\u5730\u7403\u7684\u90a3\u6761\u76f4\u7ebf\u3002<\/div>\n
<\/div>\n
\u6240\u4ee5\u5982\u679c\u4f60\u7684\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u662f\u7528\u7ecf\u7eac\u5ea6\u8fdb\u884c\u5b58\u50a8\u7684\uff0c\u4f60\u5c31\u65e0\u6cd5\u7b80\u5355\u7684\u76f4\u63a5\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u8fdb\u884c\u8ddd\u79bb\u8ba1\u7b97\u3002<\/div>\n
<\/div>\n
\u65b9\u68484\uff1a\u4f7f\u7528MongoDB\u5b58\u50a8\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f<\/div>\n
MongoDB\u539f\u751f\u652f\u6301\u5730\u7406\u4f4d\u7f6e\u7d22\u5f15\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528\u4e8e\u4f4d\u7f6e\u8ddd\u79bb\u8ba1\u7b97\u548c\u67e5\u8be2\u3002<\/div>\n
<\/div>\n
\u53e6\u5916\uff0c\u5b83\u4e5f\u662f\u5982\u4eca\u6700\u6d41\u884c\u7684NoSQL\u6570\u636e\u5e93\u4e4b\u4e00\uff0c\u9664\u4e86\u80fd\u591f\u5f88\u597d\u5730\u652f\u6301\u5730\u7406\u4f4d\u7f6e\u8ba1\u7b97\u4e4b\u5916\uff0c\u8fd8\u62e5\u6709\u8bf8\u5982\u9762\u5411\u96c6\u5408\u5b58\u50a8\u3001\u6a21\u5f0f\u81ea\u7531\u3001\u9ad8\u6027\u80fd\u3001\u652f\u6301\u590d\u6742\u67e5\u8be2\u3001\u652f\u6301\u5b8c\u5168\u7d22\u5f15\u7b49\u7b49\u7279\u6027\u3002<\/div>\n
<\/div>\n
\u5bf9\u4e8e\u6211\u4eec\u7684\u9700\u6c42\uff0c\u5728MongoDB\u53ea\u9700\u4e00\u4e2a\u547d\u4ee4\u5373\u53ef\u5f97\u5230\u6240\u9700\u8981\u7684\u7ed3\u679c\uff1a<\/div>\n
<\/div>\n
db.runCommand( { geoNear: “places”, near: [ 121.4905, 31.2646 ], num:100 })<\/div>\n
\u67e5\u8be2\u7ed3\u679c\u9ed8\u8ba4\u5c06\u4f1a\u7531\u8fd1\u5230\u8fdc\u6392\u5e8f\uff0c\u800c\u4e14\u67e5\u8be2\u7ed3\u679c\u4e5f\u5305\u542b\u76ee\u6807\u70b9\u5bf9\u8c61\u3001\u8ddd\u79bb\u76ee\u6807\u70b9\u7684\u8ddd\u79bb\u7b49\u4fe1\u606f\u3002<\/div>\n
<\/div>\n
\u7531\u4e8egeoNear\u662fMongoDB\u539f\u751f\u652f\u6301\u7684\u67e5\u8be2\u51fd\u6570\uff0c\u6240\u4ee5\u6027\u80fd\u4e0a\u4e5f\u505a\u5230\u4e86\u9ad8\u5ea6\u7684\u4f18\u5316\uff0c\u5b8c\u5168\u53ef\u4ee5\u5e94\u4ed8\u751f\u4ea7\u73af\u5883\u7684\u538b\u529b\u3002<\/div>\n
<\/div>\n
\u65b9\u6848\u603b\u7ed3<\/div>\n
\u57fa\u4e8eMongoDB\u505a\u9644\u8fd1\u67e5\u8be2\u662f\u5f88\u65b9\u4fbf\u7684\u4e00\u4ef6\u4e8b\u60c5\u3002<\/div>\n
<\/div>\n
MongoDB\u5728\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u65b9\u9762\u7684\u8868\u73b0\u8fdc\u8fdc\u4e0d\u9650\u4e8e\u6b64\uff0c\u5b83\u8fd8\u652f\u6301\u66f4\u591a\u66f4\u52a0\u65b9\u4fbf\u7684\u529f\u80fd\uff0c\u5982\u8303\u56f4\u67e5\u8be2\u3001\u8ddd\u79bb\u81ea\u52a8\u8ba1\u7b97\u7b49\u3002<\/div>\n
<\/div>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u7ed3\u5408Symfony2\u6765\u8be6\u7ec6\u5730\u6f14\u793a\u4e00\u4e9b\u4f7f\u7528MongoDB\u8fdb\u884c\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u5904\u7406\u7684\u4f8b\u5b50\u3002<\/div>\n
<\/div>\n
3. \u7ed3\u5408Symfony2\u6f14\u793a<\/div>\n
<\/div>\n
\u8fd0\u884c\u73af\u5883<\/div>\n
<\/div>\n
\u53c2\u8003\u73af\u5883\uff1aNginx1.2 + PHP5.4 + MongoDB2.4.3 + Symfony2.1<\/div>\n
<\/div>\n
\u5efa\u7acbcoordinate\u548cplaces\u4e24\u4e2adocument\u6587\u4ef6\uff0c\u524d\u8005\u662f\u4f5c\u4e3aplaces\u5185\u7684\u4e00\u4e2aembed\u5b57\u6bb5. \u4e3a\u65b9\u4fbf\u6f14\u793a\u6548\u679c\uff0c\u8fd9\u91cc\u540c\u65f6\u8bbe\u7f6e\u4e86\u4e24\u4e2a\u7d22\u5f15 2d \u548c 2dsphere<\/div>\n
<\/div>\n
\u00a0 \u00a0 Document\/Coordinate.php<\/div>\n
<\/div>\n
\u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0* @MongoDB\\EmbeddedDocument<\/div>\n
\u00a0 \u00a0 \u00a0*\/<\/div>\n
\u00a0 \u00a0 class Coordinate {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Field(type=”float”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 public $longitude;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Field(type=”float”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 public $latitude;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 …<\/div>\n
\u00a0 \u00a0 }<\/div>\n
<\/div>\n
\u00a0 \u00a0 Document\/Place.php<\/div>\n
<\/div>\n
\u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 * @MongoDB\\Document(collection=”places”)<\/div>\n
\u00a0 \u00a0 * @MongoDB\\ChangeTrackingPolicy(“DEFERRED_EXPLICIT”)<\/div>\n
\u00a0 \u00a0 * @MongoDB\\Indexes({<\/div>\n
\u00a0 \u00a0 * \u00a0 @MongoDB\\Index(keys={“coordinate”=”2d”}),<\/div>\n
\u00a0 \u00a0 * \u00a0 @MongoDB\\Index(keys={“coordinate”=”2dsphere”})<\/div>\n
\u00a0 \u00a0 * })<\/div>\n
\u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 class Place<\/div>\n
\u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Id(strategy=”INCREMENT”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 protected $id;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Field(type=”string”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 protected $title;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Field(type=”string”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 protected $address;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\EmbedOne(targetDocument=”HenterGEO\\GEOBundle\\Document\\Coordinate”)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 protected $coordinate;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \/**<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 * @MongoDB\\Distance<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 *\/<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 public $distance;<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 …<\/div>\n
\u00a0 \u00a0 }<\/div>\n
\u5750\u6807\u4fdd\u5b58\u4ee5longitude, latitude\u8fd9\u4e2a\u987a\u5e8f\uff08\u6ca1\u6709\u660e\u786e\u7684\u9650\u5236\u548c\u533a\u522b\uff0c\u4f46\u6211\u4eec\u5728\u6b64\u9075\u5faa\u5b98\u65b9\u7684\u63a8\u8350\uff09\u3002<\/div>\n
<\/div>\n
\u53e6\u5916\uff0c\u4e3a\u76f4\u89c2\u663e\u793a\u67e5\u8be2\u6548\u679c\uff0c\u9ed8\u8ba4\u4f7f\u7528\u767e\u5ea6\u5730\u56fe\u6807\u8bb0\u67e5\u8be2\u6570\u636e\u3002<\/div>\n
<\/div>\n
\u7a0b\u5e8f\u8bf4\u660e<\/div>\n
<\/div>\n
\u6211\u4eec\u7528\u5230\u7684\u4ee3\u7801\u5305\u662fdoctrine\/mongodb-odm-bundle\uff08\u4e0b\u6587\u79f0ODM\uff09\uff0c\u8fd9\u4e2a\u4ee3\u7801\u5305\u63d0\u4f9b\u4e86\u5728Symfony2\u73af\u5883\u4e0b\u7684MongoDB\u6570\u636e\u5e93\u652f\u6301\uff0c\u4f7f\u7528\u8fd9\u4e2a\u4ee3\u7801\u5305\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u52a0\u65b9\u4fbf\u7684\u5728Symfony2\u73af\u5883\u4e0b\u64cd\u4f5cMongoDB\u6570\u636e\u5e93\u3002\u3002<\/div>\n
<\/div>\n
ODM\u5c01\u88c5\u4e86MongoDB\u4e2d\u5e38\u7528\u7684\u4e00\u4e9b\u5730\u7406\u4f4d\u7f6e\u51fd\u6570\uff0c\u5982\u5468\u8fb9\u641c\u7d22\u548c\u8303\u56f4\u641c\u7d22\u3002<\/div>\n
<\/div>\n
ODM\u4e2d\u7684\u64cd\u4f5c\u9ed8\u8ba4\u8ddd\u79bb\u5355\u4f4d\u662f\u5ea6\uff0c\u53ea\u6709geoSphere\u652f\u6301\u5f27\u5ea6\u5355\u4f4d\uff08\u5fc5\u987b\u5728\u53c2\u6570\u4e2d\u6307\u5b9aspherical(true)\uff09<\/div>\n
<\/div>\n
4. MongoDB\u7684\u5730\u7406\u4f4d\u7f6e\u67e5\u8be2<\/div>\n
<\/div>\n
\u6ce8\u610f\u4e8b\u9879<\/div>\n
<\/div>\n
\u4e0b\u6587\u5927\u591a\u6570\u76f4\u63a5\u5bf9MongoDB\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u5c06\u4f7f\u7528Mongo Shell\u8fdb\u884c\u6f14\u793a\u3002\u5728\u6f14\u793a\u7f51\u7ad9\u9875\u9762\u548c\u529f\u80fd\u65f6\uff0c\u5c06\u7ed3\u5408Symfony2\u3001Doctrine-MongoDB\u8fdb\u884c\u6f14\u793a\u3002<\/div>\n
\u672c\u6587\u6f14\u793a\u6240\u7528\u7684MongoDB\u7248\u672c\u4e3a2.4.3\uff0c\u7248\u672c\u53f7\u6bd4\u8f83\u65b0\uff0c\u6240\u4ee5\u67d0\u4e9b\u67e5\u8be2\u65b9\u5f0f\u5728\u4f4e\u7248\u672c\u91cc\u9762\u5e76\u4e0d\u652f\u6301\u3002<\/div>\n
\u4ee5places\u8fd9\u4e2acollection\u4e3a\u4f8b\uff0c\u5927\u90e8\u5206\u4f8b\u5b50\u90fd\u9700\u8981\u7c7b\u4f3c\u4e0b\u9762\u683c\u5f0f\u7684\u6d4b\u8bd5\u6570\u636e\u652f\u6301\uff1a { “_id” : 2, “coordinate” : { “longitude” : 121.3449, “latitude” : 31.17528 }, “title” : “\u4ec5\u552e75\u5143\uff0c\u5e02\u573a\u4ef7210\u5143\u7684\u9876\u5471\u5471\u7530\u9e21\u706b\u95053-4\u4eba\u5957\u9910\uff0c\u65e0\u9910\u5177\u8d39\uff0c\u51ac\u65e5\u6696\u9505\uff0c\u6b22\u8fce\u54c1\u5c1d”, “address” : “\u95f5\u884c\u533a\u822a\u65b0\u8def634\u53f7” }<\/div>\n
\u5730\u7406\u4f4d\u7f6e\u7d22\u5f15\uff1a<\/div>\n
<\/div>\n
MongoDB\u5730\u7406\u4f4d\u7f6e\u7d22\u5f15\u5e38\u7528\u7684\u6709\u4e24\u79cd\u3002<\/div>\n
<\/div>\n
2d \u5e73\u9762\u5750\u6807\u7d22\u5f15\uff0c\u9002\u7528\u4e8e\u57fa\u4e8e\u5e73\u9762\u7684\u5750\u6807\u8ba1\u7b97\u3002\u4e5f\u652f\u6301\u7403\u9762\u8ddd\u79bb\u8ba1\u7b97\uff0c\u4e0d\u8fc7\u5b98\u65b9\u63a8\u8350\u4f7f\u75282dsphere\u7d22\u5f15\u3002<\/div>\n
2dsphere \u51e0\u4f55\u7403\u4f53\u7d22\u5f15\uff0c\u9002\u7528\u4e8e\u7403\u9762\u51e0\u4f55\u8fd0\u7b97<\/div>\n
\u5173\u4e8e\u4e24\u4e2a\u5750\u6807\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u5b98\u65b9\u63a8\u83502dsphere\uff1a<\/div>\n
<\/div>\n
MongoDB supports rudimentary spherical queries on flat 2d indexes for legacy reasons. In general, spherical calculations should use a 2dsphere index, as described in 2dsphere Indexes.<\/div>\n
<\/div>\n
\u4e0d\u8fc7\uff0c\u53ea\u8981\u5750\u6807\u8de8\u5ea6\u4e0d\u592a\u5927\uff08\u6bd4\u5982\u51e0\u767e\u51e0\u5343\u516c\u91cc\uff09\uff0c\u8fd9\u4e24\u4e2a\u7d22\u5f15\u8ba1\u7b97\u51fa\u7684\u8ddd\u79bb\u76f8\u5dee\u51e0\u4e4e\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002<\/div>\n
<\/div>\n
\u5efa\u7acb\u7d22\u5f15\uff1a<\/div>\n
<\/div>\n
> db.places.ensureIndex({‘coordinate’:’2d’})<\/div>\n
> db.places.ensureIndex({‘coordinate’:’2dsphere’})<\/div>\n
\u67e5\u8be2\u65b9\u5f0f\uff1a<\/div>\n
<\/div>\n
\u67e5\u8be2\u65b9\u5f0f\u5206\u4e09\u79cd\u60c5\u51b5\uff1a<\/div>\n
<\/div>\n
Inclusion\u3002\u8303\u56f4\u67e5\u8be2\uff0c\u5982\u767e\u5ea6\u5730\u56fe\u201c\u89c6\u91ce\u5185\u641c\u7d22\u201d\u3002<\/div>\n
Inetersection\u3002\u4ea4\u96c6\u67e5\u8be2\u3002\u4e0d\u5e38\u7528\u3002<\/div>\n
Proximity\u3002\u5468\u8fb9\u67e5\u8be2\uff0c\u5982\u201c\u9644\u8fd1500\u5185\u7684\u9910\u5385\u201d\u3002<\/div>\n
\u800c\u67e5\u8be2\u5750\u6807\u53c2\u6570\u5219\u5206\u4e24\u79cd\uff1a<\/div>\n
<\/div>\n
\u5750\u6807\u5bf9\uff08\u7ecf\u7eac\u5ea6\uff09\u6839\u636e\u67e5\u8be2\u547d\u4ee4\u7684\u4e0d\u540c\uff0c$maxDistance\u8ddd\u79bb\u5355\u4f4d\u53ef\u80fd\u662f \u5f27\u5ea6 \u548c \u5e73\u9762\u5355\u4f4d\uff08\u7ecf\u7eac\u5ea6\u7684\u201c\u5ea6\u201d\uff09\uff1a<\/div>\n
<\/div>\n
\u00a0 db.<collection>.find( { <location field> :<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0{ $nearSphere: [ <x> , <y> ] ,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0$maxDistance: <distance in radians><\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } } )<\/div>\n
GeoJson $maxDistance\u8ddd\u79bb\u5355\u4f4d\u9ed8\u8ba4\u4e3a\u7c73\uff1a<\/div>\n
<\/div>\n
\u00a0 db.<collection>.find( { <location field> :<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0{ $nearSphere :<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0{ $geometry :<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 { type : “Point” ,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 coordinates : [ <longitude> , <latitude> ] } ,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0$maxDistance : <distance in meters><\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0} } } )<\/div>\n
\u6848\u4f8bA\uff1a\u9644\u8fd1\u7684\u4eba<\/div>\n
<\/div>\n
\u67e5\u8be2\u5f53\u524d\u5750\u6807\u9644\u8fd1\u7684\u76ee\u6807\uff0c\u7531\u8fd1\u5230\u8fdc\u6392\u5217\u3002<\/div>\n
<\/div>\n
\u53ef\u4ee5\u901a\u8fc7$near\u6216$nearSphere\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7c7b\u4f3c\uff0c\u4f46\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u6240\u7528\u5230\u7684\u7d22\u5f15\u548c\u8ddd\u79bb\u5355\u4f4d\u4e0d\u540c\u3002<\/div>\n
<\/div>\n
\u67e5\u8be2\u65b9\u5f0f\uff1a<\/div>\n
<\/div>\n
> db.places.find({‘coordinate’:{$near: [121.4905, 31.2646]}})<\/div>\n
> db.places.find({‘coordinate’:{$nearSphere: [121.4905, 31.2646]}})<\/div>\n
\u67e5\u8be2\u7ed3\u679c\uff1a<\/div>\n
<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c<\/div>\n
\u8282\u5047\u65e5\u901a\u7528\uff0c\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
}<\/div>\n
<\/div>\n
\u2026(100\u6761)<\/div>\n
\u4e0a\u8ff0\u67e5\u8be2\u5750\u6807[121.4905, 31.2646]\u9644\u8fd1\u7684100\u4e2a\u70b9\uff0c\u4ece\u6700\u8fd1\u5230\u6700\u8fdc\u6392\u5e8f\u3002<\/div>\n
<\/div>\n
\u9ed8\u8ba4\u8fd4\u56de100\u6761\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u7528limit()\u6307\u5b9a\u7ed3\u679c\u6570\u91cf\uff0c\u5982<\/div>\n
<\/div>\n
> db.places.find({‘coordinate’:{$near: [121.4905, 31.2646]}}).limit(2)<\/div>\n
\u6307\u5b9a\u6700\u5927\u8ddd\u79bb $maxDistance<\/div>\n
<\/div>\n
> db.places.find({‘coordinate’:{$near: [121.4905, 31.2646], $maxDistance:2}})<\/div>\n
\u7ed3\u5408Symfony2\u8fdb\u884c\u6f14\u793a\uff1a<\/div>\n
<\/div>\n
\u8fd9\u91cc\u7528near\uff0c\u9ed8\u8ba4\u4ee5\u5ea6\u4e3a\u5355\u4f4d\uff0c\u516c\u91cc\u6570\u9664\u4ee5111\uff08\u5173\u4e8e\u8be5\u8ddd\u79bb\u5355\u4f4d\u540e\u6587\u6709\u8be6\u7ec6\u89e3\u91ca\uff09\u3002<\/div>\n
<\/div>\n
\/**<\/div>\n
\u00a0* @Route(“\/near”, name=”near”)<\/div>\n
\u00a0* @Template()<\/div>\n
\u00a0*\/<\/div>\n
public function nearAction(){<\/div>\n
<\/div>\n
\u00a0 \u00a0 $longitude = (float)$this->getRequest()->get(‘lon’,121.4905);<\/div>\n
\u00a0 \u00a0 $latitude = (float)$this->getRequest()->get(‘lat’,31.2646);<\/div>\n
\u00a0 \u00a0 \/\/2km<\/div>\n
\u00a0 \u00a0 $max = (float)$this->getRequest()->get(‘max’, 2);<\/div>\n
<\/div>\n
\u00a0 \u00a0 $places = $this->getPlaceRepository()->createQueryBuilder()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->field(‘coordinate’)->near($longitude, $latitude)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->maxDistance($max\/111)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->getQuery()->toarray();<\/div>\n
<\/div>\n
\u00a0 \u00a0 return compact(‘places’,’max’,’longitude’,’latitude’);<\/div>\n
}<\/div>\n
\u901a\u8fc7 domain.dev\/near \u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
\u00a0\"2\"<\/a><\/div>\n
<\/div>\n
longitude: xxx, latitude: xxx\u4e3a\u5f53\u524d\u4f4d\u7f6e\uff0c\u6211\u4eec\u5728\u5730\u56fe\u4e0a\u663e\u793a\u4e86\u5468\u8fb9100\u6761\u76ee\u6807\u8bb0\u5f55<\/div>\n
<\/div>\n
\u6848\u4f8bB\uff1a\u533a\u57df\u5185\u641c\u7d22<\/div>\n
<\/div>\n
MongoDB\u4e2d\u7684\u8303\u56f4\u641c\u7d22\uff08Inclusion\uff09\u4e3b\u8981\u7528$geoWithin\u8fd9\u4e2a\u547d\u4ee4\uff0c\u5b83\u53c8\u7ec6\u5206\u4e3a3\u79cd\u4e0d\u540c\u7c7b\u578b\uff0c\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
$box \u77e9\u5f62<\/div>\n
$center \u5706\uff08\u5e73\u9762\uff09\uff0c$centerSphere\u5706\uff08\u7403\u9762\uff09<\/div>\n
$polygon \u591a\u8fb9\u5f62<\/div>\n
$center\u548c$centerSphere\u5728\u5c0f\u8303\u56f4\u5185\u7684\u5e94\u7528\u51e0\u4e4e\u6ca1\u5dee\u522b\uff08\u9664\u975e\u8fd9\u4e2a\u5706\u534a\u5f84\u51e0\u767e\u4e0a\u5343\u516c\u91cc\uff09\u3002<\/div>\n
<\/div>\n
\u4e0b\u9762\u6211\u4eec\u4ecb\u7ecd\u4e00\u4e0b\u8fd9\u4e09\u79cd\u67e5\u8be2\u7684\u6848\u4f8b\u3002<\/div>\n
<\/div>\n
\u77e9\u5f62\u533a\u57df<\/div>\n
\u8fd9\u4e2a\u6bd4\u8f83\u5e38\u7528\uff0c\u6bd4\u5982\u767e\u5ea6\u5730\u56fe\u7684\u89c6\u91ce\u5185\u641c\u7d22\uff08\u77e9\u5f62\uff09\u3001\u6216\u641c\u72d7\u5730\u56fe\u7684\u201c\u62c9\u6846\u641c\u7d22\u201d<\/div>\n
<\/div>\n
\u5b9a\u4e49\u4e00\u4e2a\u77e9\u5f62\u8303\u56f4\uff0c\u6211\u4eec\u9700\u8981\u6307\u5b9a\u4e24\u4e2a\u5750\u6807\uff0c\u5728MongoDB\u7684\u67e5\u8be2\u65b9\u5f0f\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
> db.places.find(<\/div>\n
\u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 coordinate : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 $geoWithin : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 $box :[ [ 121.44, 31.25 ] , [ 121.5005, 31.2846 ] ]<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 }<\/div>\n
)<\/div>\n
\u67e5\u8be2\u7ed3\u679c\uff1a<\/div>\n
<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “_id” : 90472,<\/div>\n
\u00a0 \u00a0 “title” : “\u3010\u9c81\u8fc5\u516c\u56ed\u3011\u4ec5\u552e99\u5143\uff01\u9152\u5e97\u95e8\u5e02\u4ef7288\u5143\u7684\u4e0a\u6d77\u8679\u5143\u5546\u52a1\u5bbe\u9986\u5ba2\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff08\u9700\u6301\u672c\u4eba\u6709\u6548<\/div>\n
\u8eab\u4efd\u8bc1\u4ef6\u529e\u7406\u767b\u8bb0\uff09\uff1a\u5927\u5e8a\u623f\/\u6807\u51c6\u623f\uff082\u90091\uff09\uff01\u4e0d\u542b\u65e9\u9910\uff01\u4e0d\u6d89\u5916\uff012012\u5e749\u670829\u65e5-10\u67086\u65e5<\/div>\n
\u4e0d\u53ef\u4f7f\u7528\u62c9\u624b\u5238\uff01\u53ef\u5ef6\u8fdf\u9000\u623f\u81f314:00\uff01”,<\/div>\n
\u00a0 \u00a0 “address” : “\u4e0a\u6d77\u5e02\u8679\u53e3\u533a\u67f3\u8425\u8def8\u53f7”,<\/div>\n
\u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.47,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.27145<\/div>\n
\u00a0 \u00a0 }<\/div>\n
}<\/div>\n
…<\/div>\n
…<\/div>\n
Symfony2\u6f14\u793a\u4ee3\u7801\uff1a<\/div>\n
<\/div>\n
\u6307\u5b9a\u4e24\u4e2a\u5750\u6807\u70b9<\/div>\n
<\/div>\n
\/**<\/div>\n
\u00a0* @Route(“\/box”, name=”box”)<\/div>\n
\u00a0* @Template()<\/div>\n
\u00a0*\/<\/div>\n
public function boxAction(){<\/div>\n
\u00a0 \u00a0 $request = $this->getRequest();<\/div>\n
<\/div>\n
\u00a0 \u00a0 $longitude = (float)$request->get(‘lon’,121.462035);<\/div>\n
\u00a0 \u00a0 $latitude = (float)$request->get(‘lat’,31.237641);<\/div>\n
<\/div>\n
\u00a0 \u00a0 $longitude2 = (float)$request->get(‘lon2’,121.522098);<\/div>\n
\u00a0 \u00a0 $latitude2 = (float)$request->get(‘lat2’,31.215284);<\/div>\n
<\/div>\n
\u00a0 \u00a0 $places = $this->getPlaceRepository()->createQueryBuilder()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->field(‘coordinate’)->withinBox($longitude, $latitude,<\/div>\n
$longitude2, $latitude2)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->getQuery()->toarray();<\/div>\n
<\/div>\n
\u00a0 \u00a0 return compact(‘places’,’longitude’,’latitude’, ‘longitude2’, ‘latitude2’);<\/div>\n
}<\/div>\n
\u901a\u8fc7 domain.dev\/box \u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/div>\n
\"3\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\u5706\u5f62\u533a\u57df<\/div>\n
\u5e94\u7528\u573a\u666f\u6709\uff1a\u5730\u56fe\u641c\u7d22\u79df\u623f\u4fe1\u606f<\/div>\n
<\/div>\n
\u67e5\u8be2\u4ee5\u67d0\u5750\u6807\u4e3a\u5706\u5fc3\uff0c\u6307\u5b9a\u534a\u5f84\u7684\u5706\u5185\u7684\u6570\u636e\u3002<\/div>\n
<\/div>\n
\u524d\u9762\u5df2\u63d0\u5230\uff0c\u5706\u5f62\u533a\u57df\u641c\u7d22\u5206\u4e3a$center\u548c$centerSphere\u8fd9\u4e24\u79cd\u7c7b\u578b\uff0c\u5b83\u4eec\u7684\u533a\u522b\u4e3b\u8981\u5728\u4e8e\u652f\u6301\u7684\u7d22\u5f15\u548c\u9ed8\u8ba4\u8ddd\u79bb\u5355\u4f4d\u4e0d\u540c\u3002<\/div>\n
<\/div>\n
2d\u7d22\u5f15\u80fd\u540c\u65f6\u652f\u6301$center\u548c$centerSphere\uff0c2dsphere\u7d22\u5f15\u652f\u6301$centerSphere\u3002\u5173\u4e8e\u8ddd\u79bb\u5355\u4f4d\uff0c$center\u9ed8\u8ba4\u662f\u5ea6\uff0c$centerSphere\u9ed8\u8ba4\u8ddd\u79bb\u662f\u5f27\u5ea6\u3002<\/div>\n
<\/div>\n
\u67e5\u8be2\u65b9\u5f0f\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
> db.places.find({‘coordinate’:{$geoWithin:{$centerSphere:[ [121.4905, 31.2646] ,<\/div>\n
0.6\/111] }}})<\/div>\n
\u6216<\/div>\n
> db.places.find({‘coordinate’:{$geoWithin:{$centerSphere:[ [121.4905, 31.2646] ,<\/div>\n
0.6\/6371] }}})<\/div>\n
\u67e5\u8be2\u7ed3\u679c<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c\u8282\u5047\u65e5\u901a\u7528\uff0c<\/div>\n
\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
}<\/div>\n
…<\/div>\n
Symfony2\u6f14\u793a\u4ee3\u7801\uff1a<\/div>\n
<\/div>\n
\u6307\u5b9a\u5706\u5fc3\u5750\u6807\u548c\u534a\u5f84<\/div>\n
<\/div>\n
\/**<\/div>\n
\u00a0* @Route(“\/center”, name=”center”)<\/div>\n
\u00a0* @Template()<\/div>\n
\u00a0*\/<\/div>\n
public function centerAction(){<\/div>\n
\u00a0 \u00a0 $request = $this->getRequest();<\/div>\n
<\/div>\n
\u00a0 \u00a0 $longitude = (float)$request->get(‘lon’,121.4905);<\/div>\n
\u00a0 \u00a0 $latitude = (float)$request->get(‘lat’,31.2646);<\/div>\n
\u00a0 \u00a0 \/\/10km<\/div>\n
\u00a0 \u00a0 $max = (float)$request->get(‘max’, 10);<\/div>\n
<\/div>\n
\u00a0 \u00a0 $places = $this->getPlaceRepository()->createQueryBuilder()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->field(‘coordinate’)->withinCenter($longitude, $latitude, $max\/111)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->getQuery()->toarray();<\/div>\n
<\/div>\n
\u00a0 \u00a0 return compact(‘places’,’max’,’longitude’,’latitude’);<\/div>\n
}<\/div>\n
\u901a\u8fc7 domain.dev\/center \u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
\u4ee5longitude: xxx\uff0clatitude: xxx\u4e3a\u4e2d\u5fc3\u70b9\uff0c\u534a\u5f8410km\u7684\u5706\u5185<\/div>\n
\"4\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\u591a\u8fb9\u5f62<\/div>\n
\u590d\u6742\u533a\u57df\u5185\u7684\u67e5\u8be2\uff0c\u8fd9\u4e2a\u5e94\u7528\u573a\u666f\u6bd4\u8f83\u5c11\u89c1\u3002\u6307\u5b9a\u81f3\u5c113\u4e2a\u5750\u6807\u70b9\uff0c\u67e5\u8be2\u65b9\u5f0f\u5982\u4e0b\uff08\u4e94\u8fb9\u5f62\uff09\uff1a<\/div>\n
<\/div>\n
> db.places.find( { coordinate : { $geoWithin : { $polygon : [<\/div>\n
\u00a0 \u00a0 [121.45183 , 31.243816] ,<\/div>\n
\u00a0 \u00a0 [121.533181, 31.24344] ,<\/div>\n
\u00a0 \u00a0 [121.535049, 31.208983] ,<\/div>\n
\u00a0 \u00a0 [121.448955, 31.214913] ,<\/div>\n
\u00a0 \u00a0 [121.440619, 31.228748]<\/div>\n
] } } } )<\/div>\n
\u67e5\u8be2\u7ed3\u679c<\/div>\n
<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “_id” : 90078,<\/div>\n
\u00a0 \u00a0 “title” : “\u4ec5\u552e9.9\u5143\uff0c\u5e02\u573a\u4ef738\u5143\u7684\u71d5\u592a\u592a\u71d5\u7a9d\u5355\u4eba\u751c\u54c1\u9910\uff0c\u7528\u8010\u5fc3\u5b88\u5019\u4e00\u76c5\u7096\u54c1\uff0c\u7528\u7231\u6ecb\u8865\u4e00\u751f\u60c5\u8c0a”,<\/div>\n
\u00a0 \u00a0 “address” : “\u6cb3\u5357\u5357\u8def489\u53f7\u9999\u6e2f\u540d\u90fd\u8d2d\u7269\u5e7f\u573a1F125\u71d5\u592a\u592a\u71d5\u7a9d”,<\/div>\n
\u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.48912,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.22355<\/div>\n
\u00a0 \u00a0 }<\/div>\n
}<\/div>\n
…<\/div>\n
Symfony2\u6f14\u793a\u4ee3\u7801\uff08\u8fd9\u91cc\u4e3a\u65b9\u4fbf\uff0c\u76f4\u63a5\u5199\u6b7b\u4e865\u4e2a\u5750\u6807\u70b9\uff09\uff1a<\/div>\n
<\/div>\n
\/**<\/div>\n
\u00a0* @Route(“\/polygon”, name=”polygon”)<\/div>\n
\u00a0* @Template()<\/div>\n
\u00a0*\/<\/div>\n
public function polygonAction(){<\/div>\n
\u00a0 \u00a0 $points = [];<\/div>\n
\u00a0 \u00a0 $points[] = [121.45183,31.243816];<\/div>\n
\u00a0 \u00a0 $points[] = [121.533181,31.24344];<\/div>\n
\u00a0 \u00a0 $points[] = [121.535049,31.208983];<\/div>\n
\u00a0 \u00a0 $points[] = [121.448955,31.214913];<\/div>\n
\u00a0 \u00a0 $points[] = [121.440619,31.228748];<\/div>\n
<\/div>\n
\u00a0 \u00a0 $sumlon = $sumlat = 0;<\/div>\n
\u00a0 \u00a0 foreach($points as $p){<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 $sumlon += $p[0];<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 $sumlat += $p[1];<\/div>\n
\u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 $center = [$sumlon\/count($points), $sumlat\/count($points)];<\/div>\n
<\/div>\n
\u00a0 \u00a0 $places = $this->getPlaceRepository()->createQueryBuilder()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->field(‘coordinate’)->withinPolygon($points[0], $points[1], $points[2],<\/div>\n
$points[3], $points[4])<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->getQuery()->toarray();<\/div>\n
<\/div>\n
\u00a0 \u00a0 return compact(‘places’,’points’, ‘center’);<\/div>\n
}<\/div>\n
\u901a\u8fc7 domain.dev\/polygon \u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/div>\n
\"5\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\u6848\u4f8bC\uff1a\u9644\u8fd1\u7684\u9910\u5385<\/div>\n
<\/div>\n
\u6211\u4eec\u5047\u8bbe\u9700\u8981\u4ee5\u5f53\u524d\u5750\u6807\u4e3a\u539f\u70b9\uff0c\u67e5\u8be2\u9644\u8fd1\u6307\u5b9a\u8303\u56f4\u5185\u7684\u9910\u5385\uff0c\u5e76\u76f4\u63a5\u663e\u793a\u8ddd\u79bb\u3002<\/div>\n
<\/div>\n
\u8fd9\u4e2a\u9700\u6c42\u7528\u524d\u9762\u63d0\u5230\u7684$near\u662f\u53ef\u4ee5\u5b9e\u73b0\u7684\uff0c\u4f46\u662f\u8ddd\u79bb\u9700\u8981\u4e8c\u6b21\u8ba1\u7b97\u3002\u8fd9\u91cc\u6211\u4eec\u7528$geoNear\u8fd9\u4e2a\u547d\u4ee4\u67e5\u8be2\u3002<\/div>\n
<\/div>\n
$geoNear\u4e0e$near\u529f\u80fd\u7c7b\u4f3c\uff0c\u4f46\u63d0\u4f9b\u66f4\u591a\u529f\u80fd\u548c\u8fd4\u56de\u66f4\u591a\u4fe1\u606f\uff0c\u5b98\u65b9\u6587\u6863\u662f\u8fd9\u4e48\u89e3\u91ca\u7684\uff1a<\/div>\n
<\/div>\n
The geoNear command provides an alternative to the $near operator. In addition to the functionality of $near, geoNear returns additional diagnostic information.<\/div>\n
<\/div>\n
\u67e5\u8be2\u65b9\u5f0f\u5982\u4e0b\uff08\u5173\u4e8e\u4e0b\u9762\u7684\u793a\u4f8b\u7528\u5230\u4e86distanceMultipler\u51fd\u6570\uff0c\u540e\u6587\u4f1a\u8be6\u7ec6\u89e3\u91ca)\uff1a<\/div>\n
<\/div>\n
> db.runCommand( { geoNear: “places”, near: [ 121.4905, 31.2646 ], spherical: true,<\/div>\n
\u00a0maxDistance:1\/6371, num:2 })<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “ns” : “mongo_test.places”,<\/div>\n
\u00a0 \u00a0 “near” : “1110001100111100001011010110010111001000110011111101”,<\/div>\n
\u00a0 \u00a0 “results” : [<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “dis” : 0.00009318095248858048,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “obj” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c<\/div>\n
\u8282\u5047\u65e5\u901a\u7528\uff0c\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “dis” : 0.00010610660597329082,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “obj” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “_id” : 465,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.48406,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.26202<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “title” : “\u3010\u56db\u5ddd\u5317\u8def\u3011\u70ed\u70c8\u5e86\u795d\u5eb7\u9a8f\u4f1a\u9986\u6210\u7acb8\u5468\u5e74\uff01\u4ec5\u552e169\u5143\uff01\u5e02\u573a\u4ef7399\u5143\u7684<\/div>\n
\u5eb7\u9a8f\u4f1a\u9986\u56db\u5ddd\u5317\u8def\u4e00\u5e97\uff08\u4ec5\u96503\u661f\u7ea7\u6280\u5e08\uff09\u5168\u8eab\u7cbe\u6cb9\u6309\u6469\u4e00\u4eba\u6b21\uff01\u5168\u7a0b\u7ea690\u5206\u949f\uff01<\/div>\n
\u7537\u5973\u4e0d\u9650\uff01\u4ec5\u9650\u56db\u5ddd\u5317\u8def\u4e00\u5e97\u4f7f\u7528\uff0c\u975e\u672c\u5e02\u6240\u6709\u95e8\u5e97\u901a\u7528\uff01\u62c9\u624b\u5238\u6d88\u8d39\u4ec5\u9650\u6bcf\u65e519:00\u524d\uff01<\/div>\n
\u5065\u5eb7\u6709\u9053\uff0c\u9a8f\u8d8a\u4e07\u91cc\uff01”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u56db\u5ddd\u5317\u8def1896\u53f7-1904\u53f7201\u5ba4”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 ],<\/div>\n
\u00a0 \u00a0 “stats” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “time” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “btreelocs” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “nscanned” : 18,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “objectsLoaded” : 12,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “avgDistance” : 0.00009964377923093564,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “maxDistance” : 0.0001064199324957278<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “ok” : 1<\/div>\n
}<\/div>\n
\u53ef\u4ee5\u770b\u5230\u8fd4\u56de\u4e86\u5f88\u591a\u8be6\u7ec6\u4fe1\u606f\uff0c\u5982\u67e5\u8be2\u65f6\u95f4\u3001\u8fd4\u56de\u6570\u91cf\u3001\u6700\u5927\u8ddd\u79bb\u3001\u5e73\u5747\u8ddd\u79bb\u7b49\u3002<\/div>\n
<\/div>\n
\u53e6\u5916\uff0cresults\u91cc\u9762\u76f4\u63a5\u8fd4\u56de\u4e86\u8ddd\u79bb\u76ee\u6807\u70b9\u7684\u8ddd\u79bbdis\u3002<\/div>\n
<\/div>\n
Symfony2\u6f14\u793a\u4ee3\u7801\uff1a<\/div>\n
<\/div>\n
\/**<\/div>\n
\u00a0* @Route(“\/distance”, name=”distance”)<\/div>\n
\u00a0* @Template()<\/div>\n
\u00a0*\/<\/div>\n
public function distanceAction(){<\/div>\n
<\/div>\n
\u00a0 \u00a0 $longitude = (float)$this->getRequest()->get(‘lon’,121.4905);<\/div>\n
\u00a0 \u00a0 $latitude = (float)$this->getRequest()->get(‘lat’,31.2646);<\/div>\n
\u00a0 \u00a0 \/\/2km<\/div>\n
\u00a0 \u00a0 $max = (float)$this->getRequest()->get(‘max’, 2);<\/div>\n
<\/div>\n
\u00a0 \u00a0 $places = $this->getPlaceRepository()->createQueryBuilder()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->field(‘coordinate’)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->geoNear($longitude, $latitude)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->spherical(true)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->distanceMultiplier(6371)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->maxDistance($max\/6371)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->limit(100)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->getQuery()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->execute()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ->toArray();<\/div>\n
<\/div>\n
\u00a0 \u00a0 return compact(‘places’,’longitude’, ‘latitude’, ‘max’);<\/div>\n
}<\/div>\n
\u901a\u8fc7 domian.dev\/distance \u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
\u8ddd\u79bbxxx\u7c73<\/div>\n
\"6\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\u5c0f\u7ed3<\/div>\n
<\/div>\n
\u524d\u9762\u6f14\u793a\u7684\u67e5\u8be2\u4ee3\u7801\u4e2d\uff0c\u5750\u6807\u90fd\u662f\u6309\u7167 longitude, latitude\u8fd9\u4e2a\u987a\u5e8f\u7684\u3002<\/div>\n
<\/div>\n
\u8fd9\u4e2a\u662f\u5b98\u65b9\u5efa\u8bae\u7684\u5750\u6807\u987a\u5e8f\uff0c\u4f46\u662f\u7f51\u4e0a\u5f88\u591a\u6587\u6863\u662f\u76f8\u53cd\u7684\u987a\u5e8f\uff0c\u7ecf\u6d4b\u8bd5\u53d1\u73b0\uff0c\u53ea\u8981\u67e5\u8be2\u65f6\u6307\u5b9a\u7684\u5750\u6807\u987a\u5e8f\u4e0e\u6570\u636e\u5e93\u5185\u7684\u5750\u6807\u987a\u5e8f\u4e00\u81f4\uff0c\u51fa\u6765\u7684\u7ed3\u679c\u5c31\u662f\u6b63\u786e\u7684\uff0c\u6ca1\u6709\u7279\u5b9a\u7684\u5148\u540e\u987a\u5e8f\u4e4b\u5206\u3002<\/div>\n
<\/div>\n
\u4f46\u9274\u4e8e\u5b98\u65b9\u6587\u6863\u7684\u63a8\u8350\uff0c\u6211\u5728\u6b64\u8fd8\u662f\u5efa\u8bae\u5927\u5bb6\u6309\u7167\u5b98\u65b9\u63a8\u8350\u7684\u987a\u5e8f\u3002<\/div>\n
<\/div>\n
\u6848\u4f8bA\u7684$near\u548c\u6848\u4f8bB\u7684$center\u4ece\u9700\u6c42\u4e0a\u770b\u5dee\u4e0d\u591a\uff0c\u4f46\u662f$center\u6216$centerSphere\u662f\u5c5e\u4e8e$geoWithin\u7684\u7c7b\u578b\uff0c$near\u65b9\u6cd5\u67e5\u8be2\u540e\u4f1a\u5bf9\u7ed3\u679c\u96c6\u5bf9\u8ddd\u79bb\u8fdb\u884c\u6392\u5e8f,\u800c$geoWithin\u662f\u65e0\u5e8f\u7684\u3002<\/div>\n
<\/div>\n
\u5e38\u7528\u7684\u67e5\u8be2\u65b9\u5f0f\u5df2\u7ecf\u4ecb\u7ecd\u5b8c\u4e86\uff0c\u4e0d\u5e38\u7528\u7684\u6bd4\u5982geoIntersect\u67e5\u8be2\uff0c\u8fd9\u91cc\u4e0d\u505a\u4ecb\u7ecd\uff0c\u4f46\u662f\u5df2\u7ecf\u5305\u542b\u5728\u5f00\u6e90\u7684\u6f14\u793a\u7a0b\u5e8f\u91cc\u4e86\uff0c\u6709\u5174\u8da3\u7684\u8bfb\u8005\u53ef\u4ee5\u81ea\u884c\u6d4b\u8bd5\u7814\u7a76\u3002<\/div>\n
<\/div>\n
\u4e0b\u9762\u4ecb\u7ecd\u524d\u6587\u63d0\u5230\u7684\u8ddd\u79bb\u5355\u4f4d\u7b49\u95ee\u9898\u3002<\/div>\n
<\/div>\n
5. \u9700\u8981\u6ce8\u610f\u7684\u95ee\u9898<\/div>\n
<\/div>\n
\u7d22\u5f15<\/div>\n
<\/div>\n
$near\u547d\u4ee4\u5fc5\u987b\u8981\u6c42\u6709\u7d22\u5f15\u3002<\/div>\n
<\/div>\n
$geoWithin\u53ef\u4ee5\u65e0\u9700\u7d22\u5f15\uff0c\u4f46\u662f\u5efa\u8bae\u8fd8\u662f\u5efa\u7acb\u7d22\u5f15\u4ee5\u63d0\u5347\u6027\u80fd\u3002<\/div>\n
<\/div>\n
\u8ddd\u79bb\u5355\u4f4d<\/div>\n
<\/div>\n
MongoDB\u67e5\u8be2\u5730\u7406\u4f4d\u7f6e\u9ed8\u8ba4\u67093\u79cd\u8ddd\u79bb\u5355\u4f4d\uff1a<\/div>\n
<\/div>\n
\u7c73(meters)<\/div>\n
\u5e73\u9762\u5355\u4f4d(flat units\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u7ecf\u7eac\u5ea6\u7684\u201c\u4e00\u5ea6\u201d)<\/div>\n
\u5f27\u5ea6(radians)\u3002<\/div>\n
\u901a\u8fc7GeoJSON\u683c\u5f0f\u67e5\u8be2\uff0c\u5355\u4f4d\u9ed8\u8ba4\u662f\u7c73\uff0c\u901a\u8fc7\u5176\u5b83\u65b9\u5f0f\u5219\u6bd4\u8f83\u6df7\u4e71\uff0c\u4e0b\u9762\u8be6\u7ec6\u89e3\u91ca\u4e00\u4e0b\u3002<\/div>\n
<\/div>\n
\u4e0b\u9762\u7684\u67e5\u8be2\u8bed\u53e5\u6307\u5b9a\u8ddd\u79bb\u5185\u7684\u76ee\u6807\uff1a<\/div>\n
<\/div>\n
> db.places.find({‘coordinate’:{$near: [121.4905, 31.2646], $maxDistance:2}})<\/div>\n
\u73b0\u5728$maxDistance\u53c2\u6570\u662f2\uff0c\u4f46\u662f\u5982\u679c\u6211\u8981\u67e5\u8be2\u5982\u201c\u9644\u8fd1500\u7c73\u5185\u7684\u9910\u5385\u201d\u8fd9\u6837\u7684\u9700\u6c42\uff0c\u8fd9\u4e2a\u53c2\u6570\u5e94\u8be5\u662f\u591a\u5c11\uff1f<\/div>\n
<\/div>\n
\u5173\u4e8e\u8ddd\u79bb\u8ba1\u7b97\uff0cMongoDB\u7684\u5b98\u65b9\u6587\u6863\u4ec5\u4ec5\u63d0\u5230\u4e86\u5f27\u5ea6\u8ba1\u7b97\uff0c\u672a\u8bf4\u660e\u6c34\u5e73\u5355\u4f4d\uff08\u5ea6\uff09\u8ba1\u7b97\u3002<\/div>\n
<\/div>\n
\u5173\u4e8e\u5f27\u5ea6\u8ba1\u7b97\uff0c\u5b98\u65b9\u6587\u6863\u7684\u8bf4\u660e\u662f\uff1a<\/div>\n
<\/div>\n
To convert: distance to radians: divide the distance by the radius of the sphere (e.g. the Earth) in the same units as the distance measurement. radians to distance: multiply the radian measure by the radius of the sphere (e.g. the Earth) in the units system that you want to convert the distance to.<\/div>\n
<\/div>\n
The radius of the Earth is approximately 3,959 miles or 6,371 kilometers.<\/div>\n
<\/div>\n
\u6240\u4ee5\u5982\u679c\u7528\u5f27\u5ea6\u67e5\u8be2\uff0c\u5219\u4ee5\u516c\u91cc\u6570\u9664\u4ee56371\uff0c\u5982\u201c\u9644\u8fd1500\u7c73\u7684\u9910\u5385\u201d\uff1a<\/div>\n
<\/div>\n
> db.runCommand( { geoNear: “places”, near: [ 121.4905, 31.2646 ], spherical: true,<\/div>\n
\u00a0$maxDistance: 0.5\/6371 })<\/div>\n
\u90a3\u5982\u679c\u4e0d\u7528\u5f27\u5ea6\uff0c\u4ee5\u6c34\u5e73\u5355\u4f4d\uff08\u5ea6\uff09\u67e5\u8be2\u65f6\uff0c\u8ddd\u79bb\u5355\u4f4d\u5982\u4f55\u5904\u7406\uff1f<\/div>\n
<\/div>\n
\u7b54\u6848\u662f\u4ee5\u516c\u91cc\u6570\u9664\u4ee5111\uff08\u63a8\u8350\u503c\uff09\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/div>\n
<\/div>\n
\u7ecf\u7eac\u5ea6\u7684\u4e00\u5ea6\uff0c\u5206\u4e3a\u7ecf\u5ea6\u4e00\u5ea6\u548c\u7eac\u5ea6\u4e00\u5ea6\u3002<\/div>\n
<\/div>\n
\u5730\u7403\u4e0d\u540c\u7eac\u5ea6\u4e4b\u95f4\u7684\u8ddd\u79bb\u662f\u4e00\u6837\u7684\uff0c\u5730\u7403\u5b50\u5348\u7ebf\uff08\u5357\u6781\u5230\u5317\u6781\u7684\u8fde\u7ebf\uff09\u957f\u5ea639940.67\u516c\u91cc\uff0c\u7eac\u5ea6\u4e00\u5ea6\u5927\u7ea6110.9\u516c\u91cc<\/div>\n
<\/div>\n
\u4f46\u662f\u4e0d\u540c\u7eac\u5ea6\u7684\u7ecf\u5ea6\u4e00\u5ea6\u5bf9\u5e94\u7684\u957f\u5ea6\u662f\u4e0d\u4e00\u6837\u7684\uff1a<\/div>\n
<\/div>\n
\u5728\u5730\u7403\u8d64\u9053\uff0c\u4e00\u5708\u5927\u7ea6\u4e3a40075KM,\u9664\u4ee5360\u5ea6\uff0c\u6bcf\u4e00\u4e2a\u7ecf\u5ea6\u5927\u6982\u662f\uff1a40075\/360=111.32KM<\/div>\n
<\/div>\n
\u4e0a\u6d77\uff0c\u5927\u6982\u5728\u5317\u7eac31\u5ea6\uff0c\u5bf9\u5e94\u4e00\u4e2a\u7ecf\u5ea6\u7684\u957f\u5ea6\u662f\uff1a40075*sin(90-31)\/360=95.41KM<\/div>\n
<\/div>\n
\u5317\u4eac\u5728\u5317\u7eac40\u5ea6\uff0c\u5bf9\u5e94\u7684\u662f85KM<\/div>\n
<\/div>\n
\u524d\u9762\u63d0\u5230\u7684\u53c2\u6570111\uff0c\u8fd9\u4e2a\u503c\u53ea\u662f\u4f30\u7b97\uff0c\u5e76\u4e0d\u5b8c\u5168\u51c6\u786e\uff0c\u4efb\u610f\u4e24\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u5e73\u5747\u7eac\u5ea6\u8d8a\u5927\uff0c\u8fd9\u4e2a\u53c2\u6570\u5219\u8bef\u5dee\u8d8a\u5927\u3002\u8be6\u7ec6\u539f\u56e0\u53ef\u4ee5\u53c2\u8003wiki\u4e0a\u7684\u89e3\u91ca\uff1ahttp:\/\/en.wikipedia.org\/wiki\/Latitude<\/a><\/div>\n
<\/div>\n
\u4f46\u662f\uff0c\u5373\u4fbf\u5982\u6b64\uff0c\u201c\u5ea6\u201d\u8fd9\u4e2a\u5355\u4f4d\u53ea\u7528\u4e8e\u5e73\u9762\uff0c\u7531\u4e8e\u5730\u7403\u662f\u5706\u7684\uff0c\u5728\u5927\u8303\u56f4\u4f7f\u7528\u65f6\u4f1a\u6709\u8bef\u5dee\u3002<\/div>\n
<\/div>\n
\u5b98\u65b9\u5efa\u8bae\u4f7f\u7528sphere\u67e5\u8be2\u65b9\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\u8ddd\u79bb\u5355\u4f4d\u7528\u5f27\u5ea6\u3002<\/div>\n
<\/div>\n
The current implementation assumes an idealized model of a flat earth, meaning that an arcdegree of latitude (y) and longitude (x) represent the same distance everywhere. This is only true at the equator where they are both about equal to 69 miles or 111km. However, at the 10gen offices at { x : -74 , y : 40.74 } one arcdegree of longitude is about 52 miles or 83 km (latitude is unchanged). This means that something 1 mile to the north would seem closer than something 1 mile to the east.<\/div>\n
<\/div>\n
$geoNear\u8fd4\u56de\u7ed3\u679c\u96c6\u4e2d\u7684dis\uff0c\u5982\u679c\u6307\u5b9a\u4e86spherical\u4e3atrue\uff0c dis\u7684\u503c\u4e3a\u5f27\u5ea6\uff0c\u4e0d\u6307\u5b9a\u5219\u4e3a\u5ea6\u3002<\/div>\n
<\/div>\n
\u6307\u5b9a spherical\u4e3atrue,\u7ed3\u679c\u4e2d\u7684dis\u9700\u8981\u4e58\u4ee56371\u6362\u7b97\u4e3akm:<\/div>\n
<\/div>\n
> db.runCommand( { geoNear: “places”, near: [ 121.4905, 31.2646 ],<\/div>\n
spherical: true, num:1 })<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “ns” : “mongo_test.places”,<\/div>\n
\u00a0 \u00a0 “near” : “1110001100111100001011010110010111001000110011111101”,<\/div>\n
\u00a0 \u00a0 “results” : [<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “dis” : 0.00009318095248858048,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “obj” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c\u8282\u5047\u65e5\u901a\u7528\uff0c<\/div>\n
\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
<\/div>\n
\u00a0 \u00a0 ],<\/div>\n
\u00a0 \u00a0 “stats” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “time” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “btreelocs” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “nscanned” : 18,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “objectsLoaded” : 12,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “avgDistance” : 0.00009964377923093564,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “maxDistance” : 0.0001064199324957278<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “ok” : 1<\/div>\n
}<\/div>\n
\u4e0d\u6307\u5b9asphericial\uff0c\u7ed3\u679c\u4e2d\u7684dis\u9700\u8981\u4e58\u4ee5111\u6362\u7b97\u4e3akm:<\/div>\n
<\/div>\n
> db.runCommand( { geoNear: “places”, near: [ 121.4905, 31.2646 ], num:1 })<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “ns” : “mongo_test.places”,<\/div>\n
\u00a0 \u00a0 “near” : “1110001100111100001011010110010111001000110011111101”,<\/div>\n
\u00a0 \u00a0 “results” : [<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “dis” : 0.005364037658335473,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “obj” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c\u8282\u5047\u65e5\u901a\u7528\uff0c<\/div>\n
\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
<\/div>\n
\u00a0 \u00a0 ],<\/div>\n
\u00a0 \u00a0 “stats” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “time” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “btreelocs” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “nscanned” : 18,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “objectsLoaded” : 12,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “avgDistance” : 0.006150808243357531,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “maxDistance” : 0.00695541352612983<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “ok” : 1<\/div>\n
}<\/div>\n
\u8bf4\u5230\u8fd9\u91cc\u8bfb\u8005\u662f\u4e0d\u662f\u5df2\u7ecf\u6709\u70b9\u8ff7\u7cca\u4e86\uff1f\u6ca1\u5173\u7cfb\uff0c\u5728\u5f00\u53d1\u4e2d\u5176\u5b9e\u4f60\u5e76\u4e0d\u9700\u8981\u53bb\u77e5\u9053\u5404\u79cd\u8ddd\u79bb\u5355\u4f4d\u7684\u5386\u53f2\u548c\u4f7f\u7528\u5b83\u7684\u539f\u56e0\uff0c\u6211\u5728\u6b64\u4e3a\u4f60\u603b\u7ed3\u4e86\u4e00\u5f20\u8868\uff0c\u5927\u90e8\u5206\u5e38\u7528\u7684\u51fd\u6570\u548c\u6240\u4f7f\u7528\u7684\u8ddd\u79bb\u5355\u4f4d\u90fd\u5df2\u7ecf\u88ab\u6211\u6574\u7406\u4e86\u51fa\u6765\uff0c\u4f60\u53ea\u9700\u8981\u53c2\u8003\u8868\u4e0a\u6240\u5217\u7684\u8ddd\u79bb\u5355\u4f4d\u76f4\u63a5\u4f7f\u7528\u5373\u53ef\u3002<\/div>\n
<\/div>\n
\u67e5\u8be2\u547d\u4ee4 \u8ddd\u79bb\u5355\u4f4d \u8bf4\u660e<\/div>\n
$near \u5ea6 \u5b98\u65b9\u6587\u6863\u4e0a\u5173\u4e8e\u8fd9\u4e00\u70b9\u662f\u9519\u7684<\/div>\n
$nearSphere \u5f27\u5ea6<\/div>\n
$center \u5ea6<\/div>\n
$centerSphere \u5f27\u5ea6<\/div>\n
$polygon \u5ea6<\/div>\n
$geoNear \u5ea6\u6216\u5f27\u5ea6 \u6307\u5b9a\u53c2\u6570spherical\u4e3atrue\u5219\u4e3a\u5f27\u5ea6\uff0c\u5426\u5219\u4e3a\u5ea6<\/div>\n
\u5982\u679c\u5750\u6807\u4ee5GeoJSON\u683c\u5f0f\uff0c\u5219\u5355\u4f4d\u90fd\u4e3a\u7c73\u3002<\/div>\n
<\/div>\n
\u5f53\u7136\u5982\u679c\u4f60\u7684\u64cd\u4f5c\u6bd4\u8f83\u590d\u6742\uff0c\u6216\u8005\u5e0c\u671b\u77e5\u9053\u66f4\u52a0\u8be6\u7ec6\u7684\u5bf9\u7167\u5173\u7cfb\uff0c\u4e5f\u53ef\u4ee5\u53c2\u8003\u5b98\u65b9\u7684\u8fd9\u4e2a\u66f4\u8be6\u7ec6\u7684\u5bf9\u6bd4\u8868\u683c\uff1ahttp:\/\/docs.mongodb.org\/manual\/reference\/operator\/query-geospatial\/<\/a><\/div>\n
<\/div>\n
\u5355\u4f4d\u81ea\u52a8\u6362\u7b97<\/div>\n
<\/div>\n
\u5982\u4e0a\u9762\u4e24\u4e2ageoNear\u793a\u4f8b\uff0c\u7ed3\u679c\u4e2d\u7684dis\uff0c\u524d\u6587\u5df2\u7ecf\u63d0\u8fc7\u8fd9\u662f\u4e0e\u76ee\u6807\u70b9\u7684\u8ddd\u79bb\uff0c\u4f46\u662f\u8fd9\u4e2a\u8ddd\u79bb\u5355\u4f4d\u662f\u8ddf\u67e5\u8be2\u5355\u4f4d\u4e00\u81f4\u7684\uff0c\u9700\u8981\u4e8c\u6b21\u8ba1\u7b97\uff0c\u4e0d\u592a\u65b9\u4fbf\u3002<\/div>\n
<\/div>\n
\u800c\u5176\u5b9e\u53ef\u4ee5\u76f4\u63a5\u5728\u67e5\u8be2\u65f6\u6307\u5b9a distanceMultiplier \uff0c\u5b83\u4f1a\u5c06\u8fd9\u4e2a\u53c2\u6570\u4e58\u4ee5\u8ddd\u79bb\u8fd4\u56de\uff0c\u5982\u6307\u5b9a\u4e3a6371\uff0c\u8fd4\u56de\u7684\u5c31\u662f\u516c\u91cc\u6570\u3002<\/div>\n
<\/div>\n
> db.runCommand({ geoNear : “places”, near : [121.4905, 31.2646], spherical : true,<\/div>\n
\u00a0maxDistance : 1\/6371, distanceMultiplier: 6371})<\/div>\n
{<\/div>\n
\u00a0 \u00a0 “ns” : “mongo_test.places”,<\/div>\n
\u00a0 \u00a0 “near” : “1110001100111100001011010110010111001000110011111101”,<\/div>\n
\u00a0 \u00a0 “results” : [<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “dis” : 0.5936558483047463,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “obj” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “_id” : 115,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “coordinate” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “longitude” : 121.4915,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “latitude” : 31.25933<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “title” : “\u4ec5\u552e148\u5143\uff0c\u5e02\u573a\u4ef7298\u5143\u7684\u661f\u7a0b\u4e0a\u670d\u5047\u65e5\u9152\u5e97\u5168\u65e5\u623f\u4e00\u95f4\u5165\u4f4f\u4e00\u5929\uff0c\u8282\u5047\u65e5\u901a\u7528\uff0c<\/div>\n
\u7cbe\u81f4\u751f\u6d3b\uff0c\u54c1\u8d28\u4eab\u53d7”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “address” : “\u8679\u53e3\u533a\u5929\u6c34\u8def90\u53f7”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 },<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u2026<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u2026<\/div>\n
<\/div>\n
\u00a0 \u00a0 ],<\/div>\n
\u00a0 \u00a0 “stats” : {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “time” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “btreelocs” : 0,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “nscanned” : 15,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “objectsLoaded” : 9,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “avgDistance” : 0.6348305174802911,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 “maxDistance” : 0.0001064199324957278<\/div>\n
\u00a0 \u00a0 },<\/div>\n
\u00a0 \u00a0 “ok” : 1<\/div>\n
}<\/div>\n
\u6ce8\u610f\u4e0a\u9762\u7684\u7ed3\u679c\u4e2ddis\u7684\u503c\uff0c\u5df2\u7ecf\u662fkm\u5355\u4f4d\u7684\u4e86\u3002<\/div>\n
<\/div>\n
\u7ed3\u8bed<\/div>\n
<\/div>\n
\u901a\u8fc7\u524d\u9762\u7684\u6848\u4f8b\u6f14\u793a\uff0c\u76f8\u4fe1\u5927\u5bb6\u5bf9MongoDB\u7684\u5730\u7406\u4f4d\u7f6e\u7279\u6027\u5df2\u7ecf\u6bd4\u8f83\u4e86\u89e3\u3002<\/div>\n
<\/div>\n
MongoDB\u8fd8\u6709\u5f88\u591a\u5f88\u9177\u7684\u529f\u80fd\uff0c\u5730\u5740\u4f4d\u7f6e\u652f\u6301\u4ec5\u662f\u5176\u4e2d\u4e00\u9879\u3002\u5e0c\u671b\u4ee5\u540e\u80fd\u6709\u673a\u4f1a\u4e3a\u5404\u4f4d\u8bfb\u8005\u4ecb\u7ecd\u5982\u4f55\u7ed3\u5408Symfony2\u4f7f\u7528MongoDB\u8fdb\u884c\u5e94\u7528\u5f00\u53d1\u7684\u66f4\u591a\u6848\u4f8b\u3002<\/div>\n
<\/div>\n
\u6587\u4e2d\u7684\u6f14\u793a\u7a0b\u5e8f\u5df2\u7ecf\u53d1\u5e03\u5728\u4e86Github\u4e0a\uff0c\u5730\u5740\u662fhttps:\/\/github.com\/henter\/HenterGEO<\/a>\uff0c\u8bfb\u8005\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002<\/div>\n
<\/div>\n
\u53c2\u8003\uff1a<\/div>\n
<\/div>\n
http:\/\/docs.mongodb.org\/manual\/<\/a><\/div>\n
<\/div>\n
https:\/\/wiki.10gen.com\/pages\/viewpage.action?pageId=21268367&navigatingVersions=true<\/a><\/div>\n
<\/div>\n
http:\/\/en.wikipedia.org\/wiki\/Radian<\/a><\/div>\n
<\/div>\n
http:\/\/www.scribd.com\/doc\/2569355\/Geo-Distance-Search-with-MySQL<\/a><\/div>\n
<\/div>\n
http:\/\/www.phpchina.com\/resource\/manual\/mysql\/spatial-extensions-in-mysql.html<\/a><\/div>\n
<\/div>\n
http:\/\/derickrethans.nl\/spatial-indexes-mysql.html<\/a><\/div>\n
<\/div>\n
http:\/\/dev.mysql.com\/doc\/refman\/5.6\/en\/spatial-extensions.html<\/a><\/div>\n
<\/div>\n
http:\/\/dev.mysql.com\/doc\/refman\/4.1\/en\/functions-that-test-spatial-relationships-between-geometries.html#function_distance<\/a><\/div>\n
<\/div>\n
http:\/\/blog.nosqlfan.com\/html\/1811.html<\/a><\/div>\n
<\/div>\n
\n

http:\/\/en.wikipedia.org\/wiki\/Geohash<\/a><\/p>\n

\u6458\u81ea\uff1ahttp:\/\/www.infoq.com\/cn\/articles\/depth-study-of-Symfony2\/<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u968f\u7740\u8fd1\u51e0\u5e74\u5404\u7c7b\u79fb\u52a8\u7ec8\u7aef\u7684\u8fc5\u901f\u666e\u53ca\uff0c\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u7684\u670d\u52a1\uff08LBS\uff09\u548c\u76f8\u5173\u5e94\u7528\u4e5f\u8d8a\u6765\u8d8a\u591a\uff0c\u800c\u652f\u6491\u8fd9\u4e9b\u5e94\u7528\u7684\u6700\u57fa\u7840\u6280\u672f\u4e4b\u4e00\uff0c\u5c31\u662f\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u5904\u7406\u3002\u6211\u6240\u5728\u7684\u9879\u76ee\u4e5f\u6b63\u4ece\u4e8b\u76f8\u5173\u7cfb\u7edf\u7684\u5f00\u53d1\uff0c\u6211\u4eec\u4f7f\u7528\u7684\u662fSymfony2+Doctrine2 ODM+MongoDB\u7684\u7ec4\u5408\u3002<\/p>\n

\u6211\u4eec\u5c06\u8fd9\u4e9b\u6280\u672f\u8981\u70b9\u6574\u7406\u6210\u6587\uff0c\u5e0c\u671b\u80fd\u591f\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\u548c\u6848\u4f8b\uff0c\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u4f7f\u7528MongoDB\u8fdb\u884c\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u67e5\u8be2\u548c\u5904\u7406\u3002\u5728\u6587\u7ae0\u7684\u5f00\u5934\uff0c\u6211\u4eec\u4e5f\u4f1a\u5148\u4ecb\u7ecd\u4e00\u4e0b\u4e1a\u754c\u901a\u5e38\u7528\u6765\u5904\u7406\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u4e00\u4e9b\u65b9\u6848\u5e76\u8fdb\u884c\u6bd4\u8f83\uff0c\u8ba9\u8bfb\u8005\u9010\u6b65\u4e86\u89e3\u4f7f\u7528MongoDB\u67e5\u8be2\u53ca\u5904\u7406\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7684\u4f18\u52bf\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[53,52,22],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/68"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/68\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}