{"id":63654,"date":"2024-10-14T01:21:21","date_gmt":"2024-10-13T17:21:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63654\/"},"modified":"2024-10-14T01:21:22","modified_gmt":"2024-10-13T17:21:22","slug":"mongodb%e8%a1%93%e8%aa%9e-2d%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63654\/","title":{"rendered":"MongoDB\u8853\u8a9e &#8211; 2d\u7d22\u5f15"},"content":{"rendered":"<h1 id=\"mongodb%e8%a1%93%e8%aa%9e-2d%e7%b4%a2%e5%bc%95-PeHtNiSNbz\">MongoDB\u8853\u8a9e &#8211; 2D\u7d22\u5f15<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMongoDB\u56e0\u5176\u9748\u6d3b\u6027\u548c\u9ad8\u6548\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u7279\u5225\u662f\u5728\u8655\u7406\u5730\u7406\u7a7a\u9593\u6578\u64da\u6642\uff0cMongoDB\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5176\u4e2d2D\u7d22\u5f15\u662f\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMongoDB\u76842D\u7d22\u5f15\uff0c\u5305\u62ec\u5176\u5b9a\u7fa9\u3001\u4f7f\u7528\u5834\u666f\u3001\u512a\u7f3a\u9ede\u4ee5\u53ca\u5982\u4f55\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u5be6\u73fe\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af2d%e7%b4%a2%e5%bc%95%ef%bc%9f-PeHtNiSNbz\">\u4ec0\u9ebc\u662f2D\u7d22\u5f15\uff1f<\/h2>\n<p>2D\u7d22\u5f15\u662fMongoDB\u4e2d\u7528\u65bc\u8655\u7406\u5e73\u9762\u5730\u7406\u7a7a\u9593\u6578\u64da\u7684\u7d22\u5f15\u985e\u578b\u3002\u5b83\u5141\u8a31\u7528\u6236\u5728\u4e8c\u7dad\u7a7a\u9593\u4e2d\u9032\u884c\u67e5\u8a62\uff0c\u7279\u5225\u9069\u5408\u65bc\u5b58\u5132\u548c\u67e5\u8a62\u5730\u7406\u4f4d\u7f6e\u6578\u64da\uff0c\u5982\u7d93\u7def\u5ea6\u5750\u6a19\u30022D\u7d22\u5f15\u7684\u4e3b\u8981\u76ee\u7684\u662f\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9032\u884c\u7bc4\u570d\u67e5\u8a62\u6216\u9130\u8fd1\u67e5\u8a62\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"2d%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-PeHtNiSNbz\">2D\u7d22\u5f15\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>2D\u7d22\u5f15\u4e3b\u8981\u7528\u65bc\u4ee5\u4e0b\u5e7e\u7a2e\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u5730\u7406\u4f4d\u7f6e\u67e5\u8a62\uff1a<\/strong>\u4f8b\u5982\uff0c\u67e5\u8a62\u67d0\u500b\u5730\u9ede\u5468\u570d\u7684\u9910\u5ef3\u6216\u5546\u5e97\u3002<\/li>\n<li><strong>\u7bc4\u570d\u67e5\u8a62\uff1a<\/strong>\u67e5\u8a62\u7279\u5b9a\u7bc4\u570d\u5167\u7684\u6578\u64da\u9ede\uff0c\u5982\u5728\u67d0\u500b\u534a\u5f91\u5167\u7684\u6240\u6709\u7528\u6236\u3002<\/li>\n<li><strong>\u5730\u5716\u61c9\u7528\uff1a<\/strong>\u5728\u5730\u5716\u61c9\u7528\u4e2d\uff0c2D\u7d22\u5f15\u53ef\u4ee5\u7528\u4f86\u5feb\u901f\u5b9a\u4f4d\u548c\u986f\u793a\u5730\u7406\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba2d%e7%b4%a2%e5%bc%95-PeHtNiSNbz\">\u5982\u4f55\u5275\u5efa2D\u7d22\u5f15<\/h2>\n<p>\u5728MongoDB\u4e2d\u5275\u5efa2D\u7d22\u5f15\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u4e00\u500b\u540d\u70ba\u201clocations\u201d\u7684\u96c6\u5408\u4e2d\u5275\u5efa2D\u7d22\u5f15\uff1a<\/p>\n<pre><code>db.locations.createIndex({ location: \"2d\" })<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`location`\u5b57\u6bb5\u5c07\u88ab\u7d22\u5f15\u70ba2D\u7d22\u5f15\u3002\u9019\u6a23\uff0c\u7576\u6211\u5011\u9032\u884c\u67e5\u8a62\u6642\uff0cMongoDB\u5c07\u80fd\u5920\u66f4\u5feb\u5730\u5b9a\u4f4d\u5230\u76f8\u95dc\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"2d%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-PeHtNiSNbz\">2D\u7d22\u5f15\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-PeHtNiSNbz\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u67e5\u8a62\u6548\u7387\u9ad8\uff1a<\/strong>2D\u7d22\u5f15\u80fd\u986f\u8457\u63d0\u9ad8\u5730\u7406\u4f4d\u7f6e\u67e5\u8a62\u7684\u901f\u5ea6\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u652f\u6301\u591a\u7a2e\u67e5\u8a62\u64cd\u4f5c\uff0c\u5982\u7bc4\u570d\u67e5\u8a62\u548c\u9130\u8fd1\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-PeHtNiSNbz\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u6578\u64da\u9650\u5236\uff1a<\/strong>2D\u7d22\u5f15\u50c5\u9069\u7528\u65bc\u5e73\u9762\u5750\u6a19\uff0c\u5c0d\u65bc\u4e09\u7dad\u6216\u66f4\u9ad8\u7dad\u5ea6\u7684\u6578\u64da\u4e0d\u9069\u7528\u3002<\/li>\n<li><strong>\u7a7a\u9593\u9650\u5236\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c2D\u7d22\u5f15\u53ef\u80fd\u6703\u53d7\u5230\u6578\u64da\u5206\u4f48\u7684\u5f71\u97ff\uff0c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e4%b8%ad%e7%9a%84%e6%9f%a5%e8%a9%a2%e7%a4%ba%e4%be%8b-PeHtNiSNbz\">\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u67e5\u8a62\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u75282D\u7d22\u5f15\u9032\u884c\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.locations.find({\n    location: {\n        $near: {\n            $geometry: {\n                type: \"Point\",\n                coordinates: [longitude, latitude]\n            },\n            $maxDistance: 5000 \/\/ \u67e5\u8a625000\u7c73\u5167\u7684\u6578\u64da\n        }\n    }\n})<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86`$near`\u64cd\u4f5c\u7b26\u4f86\u67e5\u627e\u8ddd\u96e2\u6307\u5b9a\u7d93\u7def\u5ea65000\u7c73\u5167\u7684\u6240\u6709\u4f4d\u7f6e\u3002\u9019\u6a23\u7684\u67e5\u8a62\u5728\u67092D\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\u5c07\u6703\u975e\u5e38\u9ad8\u6548\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-PeHtNiSNbz\">\u7e3d\u7d50<\/h2>\n<p>MongoDB\u76842D\u7d22\u5f15\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u548c\u67e5\u8a62\u5730\u7406\u7a7a\u9593\u6578\u64da\u3002\u901a\u904e\u5408\u7406\u7684\u4f7f\u75282D\u7d22\u5f15\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u6d89\u53ca\u5730\u7406\u4f4d\u7f6e\u7684\u67e5\u8a62\u6642\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u53d6\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72MongoDB\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MongoDB\u4e2d\u76842D\u7d22\u5f15\uff0c\u63d0\u5347\u5730\u7406\u4f4d\u7f6e\u67e5\u8a62\u6548\u7387\uff0c\u652f\u6301\u5e73\u9762\u5750\u6a19\u6578\u64da\u7684\u5feb\u901f\u6aa2\u7d22\u8207\u5206\u6790\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-63654","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=63654"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63654\/revisions"}],"predecessor-version":[{"id":63655,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63654\/revisions\/63655"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}