{"id":30083,"date":"2023-10-25T01:55:21","date_gmt":"2022-11-18T22:06:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/mongodb%e3%81%ae%e4%bd%8d%e7%bd%ae%e6%83%85%e5%a0%b1%e3%81%abjava%e3%83%a9%e3%82%a4%e3%83%96%e3%83%a9%e3%83%aa%e3%81%aemorphia%ef%bc%88%e3%83%a2%e3%83%ab%e3%83%95%e3%82%a3%e3%82%a2%ef%bc%89%e3%81%a7\/"},"modified":"2025-08-12T17:27:29","modified_gmt":"2025-08-12T09:27:29","slug":"mongodb%e3%81%ae%e4%bd%8d%e7%bd%ae%e6%83%85%e5%a0%b1%e3%81%abjava%e3%83%a9%e3%82%a4%e3%83%96%e3%83%a9%e3%83%aa%e3%81%aemorphia%ef%bc%88%e3%83%a2%e3%83%ab%e3%83%95%e3%82%a3%e3%82%a2%ef%bc%89%e3%81%a7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/mongodb%e3%81%ae%e4%bd%8d%e7%bd%ae%e6%83%85%e5%a0%b1%e3%81%abjava%e3%83%a9%e3%82%a4%e3%83%96%e3%83%a9%e3%83%aa%e3%81%aemorphia%ef%bc%88%e3%83%a2%e3%83%ab%e3%83%95%e3%82%a3%e3%82%a2%ef%bc%89%e3%81%a7\/","title":{"rendered":"MongoDB\u306e\u4f4d\u7f6e\u60c5\u5831\u306bJava\u30e9\u30a4\u30d6\u30e9\u30ea\u306eMorphia\uff08\u30e2\u30eb\u30d5\u30a3\u30a2\uff09\u3067\u53d6\u5f97\u3059\u308b"},"content":{"rendered":"<h1>\u524d\u63d0:<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b7\u30b9\u30c6\u30e0\u306b MongoDB 4.4 \u4ee5\u4e0a\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Java 11 \u304c\u5229\u7528\u3067\u304d\u308b\u74b0\u5883\u3067\u3042\u308b\u3053\u3068\u3002<\/ul>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5b9e\u73b0\u5730\u7406\u7a7a\u95f4\uff08\u4e5f\u79f0\u4e3a\u4f4d\u7f6e\u57fa\u7840\uff09\u67e5\u8be2\uff0c\u4f8b\u5982\u641c\u7d22\u9644\u8fd1\u7684\u9910\u9986\u6216\u8005\u641c\u7d22\u4e24\u4e2a\u5730\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u3002<\/p>\n<p>MongoDB \u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b geoJSON \u306e\u4e0b\u306b\u4f4d\u7f6e\u3092\u683c\u7d0d\u3059\u308b\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3001[\u7d4c\u5ea6\u3001\u7def\u5ea6] \u5f62\u5f0f\u306e\u5ea7\u6a19\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3059\u308b\u305d\u308c\u3089\u306e\u5ea7\u6a19\u3092\u683c\u7d0d\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u3001\u7d4c\u5ea6\u306f [-180, 180] \u306e\u9593\u3001\u7def\u5ea6\u306f [-90,90] \u306e\u9593\u306b\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5728\u8fdb\u5165\u5b9e\u65bd\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u89e3\u91ca\u4e00\u4e0b\u7531MongoDB\u63d0\u4f9b\u7684geoJSON\u7c7b\u578b\u3002<\/p>\n<h2>1. \u8981\u70b9\uff1a\u8868\u793a\u4e00\u4e2a\u58f0\u660e\u4e3a\u5355\u4e00\u4f4d\u7f6e\u70b9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span> <span class=\"err\">type:<\/span> <span class=\"s2\">\"Point\"<\/span><span class=\"p\">,<\/span> <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span> <span class=\"mi\">27<\/span><span class=\"p\">,<\/span> <span class=\"mi\">67<\/span> <span class=\"p\">]<\/span> <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>2. \u7ebf\u4e32:LineString \u5ea7\u6a19\u5b57\u6bb5\u662f\u8868\u793a\u73b0\u5b9e\u4e16\u754c\u8def\u5f84\u7684\u5305\u542b\u4e24\u4e2a\u6216\u66f4\u591a\u70b9\u7684\u6570\u7ec4\u3002<br \/>\n\u8be5\u5b57\u6bb5\u7684\u58f0\u660e\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span> <span class=\"err\">type:<\/span> <span class=\"s2\">\"LineString\"<\/span><span class=\"p\">,<\/span> <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span> <span class=\"p\">[<\/span> <span class=\"mi\">27<\/span><span class=\"p\">,<\/span> <span class=\"mi\">67<\/span> <span class=\"p\">],<\/span> <span class=\"p\">[<\/span> <span class=\"mi\">52<\/span><span class=\"p\">,<\/span> <span class=\"mi\">4<\/span> <span class=\"p\">]<\/span> <span class=\"p\">]<\/span> <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u591a\u8fb9\u5f62\uff1aPolygon \u5ea7\u6a19\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u7dda\u5f62\u30ea\u30f3\u30b0\u306e\u914d\u5217\u3067\u3059\u3002\u7dda\u5f62\u30ea\u30f3\u30b0\u306b\u306f\u5c11\u306a\u304f\u3068\u3082 4 \u3064\u306e\u5ea7\u6a19\u304c\u3042\u308a\u3001\u6700\u521d\u306e\u5ea7\u6a19\u306f\u6700\u5f8c\u306e\u5ea7\u6a19\u3068\u540c\u3058\u3067\u3001\u30eb\u30fc\u30d7\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u7dda\u5f62\u30ea\u30f3\u30b0\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u3061\u3089\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u5728\u591a\u8fb9\u5f62\u5750\u6807\u4e0a\uff0c\u53ef\u80fd\u5305\u542b\u5355\u4e2a\u7ebf\u578b\u73af\u6216\u591a\u4e2a\u73af\u3002<br \/>\n\u5bf9\u4e8e\u5355\u4e2a\u73af\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u58f0\u660e\u591a\u8fb9\u5f62\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"err\">type:<\/span> <span class=\"s2\">\"Polygon\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"err\">coordinates:<\/span> <span class=\"p\">[[[<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mi\">3<\/span><span class=\"p\">,<\/span> <span class=\"mi\">4<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mi\">5<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1<\/span><span class=\"p\">]]]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>4. \u591a\u70b9\u5f0f\uff1a\u5728 MultiPoint \u5750\u6807\u4e2d\uff0c\u5b57\u6bb5\u662f\u70b9\u7684\u6570\u7ec4\u3002\u5b83\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiPoint\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n      <span class=\"p\">[<\/span><span class=\"mf\">162.07985<\/span><span class=\"p\">,<\/span> <span class=\"mf\">20.66911<\/span><span class=\"p\">],<\/span>\r\n      <span class=\"p\">[<\/span><span class=\"mf\">126.73567<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-21.59424<\/span><span class=\"p\">],<\/span>\r\n      <span class=\"p\">[<\/span><span class=\"mf\">-57.94873<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.03998<\/span><span class=\"p\">]<\/span>\r\n   <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span> \r\n<\/code><\/pre>\n<h2>5. \u591a\u884c\u5b57\u7b26\u4e32\uff1a\u5728MultiLineString\u4e2d\uff0c\u5750\u6807\u5b57\u6bb5\u662f\u6298\u7ebf\u7684\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n   <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiLineString\"<\/span><span class=\"p\">,<\/span>\r\n   <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n      <span class=\"p\">[[<\/span><span class=\"mf\">162.07985<\/span><span class=\"p\">,<\/span> <span class=\"mf\">20.66911<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">163.07945<\/span><span class=\"p\">,<\/span> <span class=\"mf\">21.56721<\/span><span class=\"p\">]],<\/span>\r\n      <span class=\"p\">[[<\/span><span class=\"mf\">126.73567<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-21.59424<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">127.74537<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-22.54623<\/span><span class=\"p\">]],<\/span>\r\n      <span class=\"p\">[[<\/span><span class=\"mf\">-57.94873<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.03998<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">-58.73823<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.12934<\/span><span class=\"p\">]]<\/span>\r\n   <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>6. MultiPolygon:<br \/>\n\u5728MultiPolygon\u4e2d\uff0c\u5ea7\u6a19\u5b57\u6bb5\u662f\u4e00\u4e2a\u591a\u4e2a\u591a\u8fb9\u5f62\u7684\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiPolygon\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n      <span class=\"p\">[[[<\/span><span class=\"mf\">0.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.02<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">7.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.03<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">3.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">5.1<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">0.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.02<\/span><span class=\"p\">]]],<\/span>\r\n      <span class=\"p\">[[[<\/span><span class=\"mf\">2.2<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.01<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">4.02<\/span><span class=\"p\">,<\/span> <span class=\"mf\">2.01<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">3.2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">3<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">2.2<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.01<\/span><span class=\"p\">]]]<\/span>\r\n   <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>7. GeometryCollection:\u8fd9\u662f\u4e00\u4e2a\u590d\u6742\u7684geoJSON\u5bf9\u8c61\uff0c\u7528\u4e8e\u5c06\u4e0a\u8ff0\u51e0\u4f55\u56fe\u5f62\u5b58\u50a8\u5728\u4e00\u4e2a\u53d8\u91cf\u4e2d\u3002\u5b83\u7684\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"err\">type:<\/span> <span class=\"s2\">\"GeometryCollection\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"err\">geometries:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiPoint\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n          <span class=\"p\">[<\/span><span class=\"mf\">162.07985<\/span><span class=\"p\">,<\/span> <span class=\"mf\">20.66911<\/span><span class=\"p\">],<\/span>\r\n          <span class=\"p\">[<\/span><span class=\"mf\">126.73567<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-21.59424<\/span><span class=\"p\">],<\/span>\r\n          <span class=\"p\">[<\/span><span class=\"mf\">-57.94873<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.03998<\/span><span class=\"p\">]<\/span>\r\n       <span class=\"p\">]<\/span>\r\n     <span class=\"p\">},<\/span>\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiLineString\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n          <span class=\"p\">[[<\/span><span class=\"mf\">162.07985<\/span><span class=\"p\">,<\/span> <span class=\"mf\">20.66911<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">163.07945<\/span><span class=\"p\">,<\/span> <span class=\"mf\">21.56721<\/span><span class=\"p\">]],<\/span>\r\n          <span class=\"p\">[[<\/span><span class=\"mf\">126.73567<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-21.59424<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">127.74537<\/span><span class=\"p\">,<\/span> <span class=\"mf\">-22.54623<\/span><span class=\"p\">]],<\/span>\r\n          <span class=\"p\">[[<\/span><span class=\"mf\">-57.94873<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.03998<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">-58.73823<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.12934<\/span><span class=\"p\">]]<\/span>\r\n       <span class=\"p\">]<\/span>\r\n     <span class=\"p\">},<\/span>\r\n\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"err\">type:<\/span> <span class=\"s2\">\"MultiPolygon\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"err\">coordinates:<\/span> <span class=\"p\">[<\/span>\r\n          <span class=\"p\">[[[<\/span><span class=\"mf\">0.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.02<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">7.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.03<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">3.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">5.1<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">0.01<\/span><span class=\"p\">,<\/span> <span class=\"mf\">0.02<\/span><span class=\"p\">]]],<\/span>\r\n          <span class=\"p\">[[[<\/span><span class=\"mf\">2.0<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.01<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">4.0<\/span><span class=\"p\">,<\/span> <span class=\"mf\">2.0<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">3.02<\/span><span class=\"p\">,<\/span> <span class=\"mf\">3.0<\/span><span class=\"p\">],<\/span> <span class=\"p\">[<\/span><span class=\"mf\">2.0<\/span><span class=\"p\">,<\/span> <span class=\"mf\">1.01<\/span><span class=\"p\">]]]<\/span>\r\n       <span class=\"p\">]<\/span>\r\n     <span class=\"p\">}<\/span>\r\n   <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u5730\u7406\u7a7a\u9593\u7d22\u5f15\u5728MongoDB\u4e2d\uff0c\u9700\u8981\u521b\u5efa\u5730\u7406\u7a7a\u95f4\u7d22\u5f15\u6765\u6267\u884c\u5730\u7406\u7a7a\u95f4\u67e5\u8be2\uff0c\u5c31\u50cf\u6267\u884c\u6587\u672c\u641c\u7d22\u4e00\u6837\u3002<br \/>\n\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u5730\u7406\u7a7a\u95f4\u7d22\u5f15\u7528\u4e8e\u5730\u7406\u7a7a\u95f4\u641c\u7d22\u3002<\/p>\n<h2>\u4e8c\u7ef4\u7684\uff1a<br \/>\n2D \u7d22\u5f15\u662f\u5728\u4e8c\u7ef4\u51e0\u4f55\u5e73\u9762\u4e0a\u8fdb\u884c\u8ba1\u7b97\u65f6\u4f7f\u7528\u7684\u3002\u672c\u6587\u4e0d\u8be6\u7ec6\u89e3\u91ca\u8fd9\u4e9b\u5185\u5bb9\u3002\u901a\u8fc7\u5b9e\u65bd\uff0c\u53ef\u4ee5\u521b\u5efa2D \u7d22\u5f15\u3002<\/p>\n<pre class=\"post-pre\"><code>db.collection.createIndex( { &lt;location field&gt; : \"2d\" } )\r\n<\/code><\/pre>\n<p>\u5728location_field\u7684\u5b57\u6bb5\u4e2d\uff0c\u5904\u7406\u7684\u5750\u6807\u503c\u9700\u8981\u4f7f\u7528[lng\uff0clat]\u8fdb\u884c\u6ce8\u518c\u3002<\/p>\n<h2>2. 2dsphere: \u4e8c\u7ef4\u7403\u4f53\u5f53\u6267\u884c\u67e5\u8be2\/\u8ba1\u7b97\u65f6\uff0c2dsphere\u7d22\u5f15\u7528\u4e8e\u7c7b\u4f3c\u5730\u7403\u8fd9\u6837\u7684\u7403\u4f53\u3002\u53ef\u4ee5\u6309\u5982\u4e0b\u65b9\u5f0f\u521b\u5efa\u8be5\u7d22\u5f15\uff0c\u5176\u4e2d\u4f4d\u7f6e\u5b57\u6bb5\u53ef\u4ee5\u662fgeoJSON\u5bf9\u8c61\u7c7b\u578b\u6216\u4f20\u7edf\u5750\u6807\u3002<\/p>\n<pre class=\"post-pre\"><code>db.collection.createIndex( { &lt;location_field&gt; : \"2dsphere\" } )\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u8ba9\u6211\u4eec\u5f00\u59cb\u5b9e\u65bd\u5427\u3002<\/p>\n<h1>\u4f7f\u7528 Java \u6765\u64cd\u4f5c MongoDB\u5728\u4f7f\u7528Java\u64cd\u4f5cMongoDB\u65f6\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4e00\u4e2a\u53eb\u505aMorphia\u7684\u5e93\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>Morphia \u662f MongoDB \u7684 Java \u9a71\u52a8\u7a0b\u5e8f\u7684\u5c01\u88c5\u5668\u3002\u5b83\u4f5c\u4e3a MongoDB \u6587\u6863\u7684\u5bf9\u8c61\u6587\u6863\u6a21\u578b(ODM) \u7684\u529f\u80fd\u3002\u6700\u521d\u7684\u76ee\u6807\u662f\u63d0\u4f9b\u4e0e\u666e\u901a\u7684 Java \u5bf9\u8c61(POJO) \u7b80\u5355\u6620\u5c04\u7684\u529f\u80fd\u3002\u76ee\u524d\uff0c\u65b0\u7248\u672c\u7684 Java \u9a71\u52a8\u7a0b\u5e8f\u76f4\u63a5\u652f\u6301\u6b64\u6620\u5c04\u3002\u6b64\u5916\uff0cMorphia \u8fd8\u5177\u6709\u4e00\u4e9b\u9644\u52a0\u503c\u7684\u529f\u80fd\uff0c\u5982\u5f15\u7528\u548c\u57fa\u4e8e\u6ce8\u91ca\u7684\u7d22\u5f15\u521b\u5efa\u7b49\u3002<\/p>\n<p>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6587\u4ef6\uff0c\u5176\u4e2d\u8be6\u7ec6\u8bf4\u660e\u4e86\u5982\u4f55\u4f7f\u7528 geoJSON\u3002\u672c\u6b21\u4ec5\u5199\u51fa\u5fc5\u8981\u7684\u90e8\u5206\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5728\u5f00\u59cb\u4f7f\u7528\u4e4b\u524d\uff0c\u5728Maven\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;dependencies&gt;<\/span>\r\n    <span class=\"nt\">&lt;dependency&gt;<\/span>\r\n        <span class=\"nt\">&lt;groupId&gt;<\/span>dev.morphia.morphia<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n        <span class=\"nt\">&lt;artifactId&gt;<\/span>morphia-core<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n        <span class=\"nt\">&lt;version&gt;<\/span>2.3.0<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n<span class=\"nt\">&lt;\/dependencies&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u53c2\u8003\u65b9\u6cd5\uff0c\u7528\u4e8e\u901a\u8fc72dsphere\u7d22\u5f15\u641c\u7d22Point\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u751f\u6210\u3059\u308b<\/span>\r\n<span class=\"kd\">final<\/span> <span class=\"nc\">Datastore<\/span> <span class=\"n\">datastore<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Morphia<\/span><span class=\"o\">.<\/span><span class=\"na\">createDatastore<\/span><span class=\"o\">(<\/span><span class=\"nc\">MongoClients<\/span><span class=\"o\">.<\/span><span class=\"na\">create<\/span><span class=\"o\">(),<\/span> <span class=\"s\">\"morphia_example\"<\/span><span class=\"o\">);<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30af\u30e9\u30b9\u306e\u5834\u6240\u3092\u3000Morphia\u3000\u306b\u8a2d\u5b9a\u3057\u307e\u3059<\/span>\r\n<span class=\"c1\">\/\/ \u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u5834\u6240\u307e\u305f\u306f\u30af\u30e9\u30b9\u3092\u8907\u6570\u6307\u5b9a\u3067\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/span>\r\n<span class=\"n\">datastore<\/span><span class=\"o\">.<\/span><span class=\"na\">getMapper<\/span><span class=\"o\">().<\/span><span class=\"na\">mapPackage<\/span><span class=\"o\">(<\/span><span class=\"s\">\"dev.morphia.example\"<\/span><span class=\"o\">);<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3059\u308b<\/span>\r\n<span class=\"n\">datastore<\/span><span class=\"o\">.<\/span><span class=\"na\">ensureIndexes<\/span><span class=\"o\">();<\/span>\r\n\r\n<span class=\"c1\">\/\/ location\u306e\u5024\u306b\u5bfe\u3057\u3066\u6307\u5b9a\u306e\u7def\u5ea6\u7d4c\u5ea6\u304b\u3089\u6700\u5c0f\u30fb\u6700\u5927\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u3066\u691c\u7d22\u3059\u308b\u3002<\/span>\r\n<span class=\"kd\">final<\/span> <span class=\"kt\">var<\/span> <span class=\"n\">point<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Point<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">Position<\/span><span class=\"o\">(<\/span><span class=\"n\">lng<\/span><span class=\"o\">,<\/span> <span class=\"n\">lat<\/span><span class=\"o\">));<\/span> <span class=\"c1\">\/\/ \u7def\u5ea6\u7d4c\u5ea6\u306e\u6307\u5b9a<\/span>\r\n<span class=\"kd\">final<\/span> <span class=\"kt\">var<\/span> <span class=\"n\">nearFilter<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Filters<\/span><span class=\"o\">.<\/span><span class=\"na\">near<\/span><span class=\"o\">(<\/span><span class=\"s\">\"location\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">point<\/span><span class=\"o\">);<\/span>\r\n<span class=\"kd\">final<\/span> <span class=\"nc\">Map<\/span> <span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Double<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">opts<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">HashMap<\/span> <span class=\"o\">&lt;&gt;();<\/span>\r\n<span class=\"n\">opts<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"s\">\"$maxDistance\"<\/span><span class=\"o\">,<\/span> <span class=\"mi\">2000<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/ \u6700\u5927\u7bc4\u56f2\u306e\u6307\u5b9a\uff08\u30e1\u30fc\u30c8\u30eb\u6307\u5b9a\uff09<\/span>\r\n<span class=\"n\">opts<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"s\">\"$minDistance\"<\/span><span class=\"o\">,<\/span> <span class=\"mi\">1000<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/ \u6700\u5c0f\u7bc4\u56f2\u306e\u6307\u5b9a\uff08\u30e1\u30fc\u30c8\u30eb\u6307\u5b9a\uff09<\/span>\r\n<span class=\"n\">nearFilter<\/span><span class=\"o\">.<\/span><span class=\"na\">applyOpts<\/span><span class=\"o\">(<\/span><span class=\"n\">opts<\/span><span class=\"o\">);<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u7d50\u679c\u3092\u30ea\u30b9\u30c8\u5f62\u5f0f\u3067\u53d7\u3051\u53d6\u308b<\/span>\r\n<span class=\"kd\">final<\/span> <span class=\"kt\">var<\/span> <span class=\"n\">tourspots<\/span> <span class=\"o\">=<\/span> <span class=\"n\">ds<\/span><span class=\"o\">.<\/span><span class=\"na\">find<\/span><span class=\"o\">(<\/span><span class=\"nc\">Tourspot<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">)<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"n\">nearFilter<\/span><span class=\"o\">)<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">iterator<\/span><span class=\"o\">().<\/span><span class=\"na\">toList<\/span><span class=\"o\">();<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8fd9\u9644\u8fd1\u6ca1\u6709\u6837\u672c\u6e90\u4ee3\u7801\uff0c\u6211\u5c31\u9700\u8981\u81ea\u5df1\u8c03\u67e5\u5e76\u5b9e\u65bd\uff0c\u6240\u4ee5\u6211\u5c06\u5b83\u4f5c\u4e3a\u5907\u5fd8\u5f55\u5199\u4e86\u4e00\u7bc7\u6587\u7ae0\u3002<br \/>\n\u5982\u679c\u6709\u5176\u4ed6\u5bf9Morphia\u6709\u53c2\u8003\u4ef7\u503c\u7684\u4e1c\u897f\uff0c\u8bf7\u544a\u8bc9\u6211\u3002<\/p>\n<p>\u4ee5\u524d\u7684\u6587\u7ae0\u6709\uff0c\u4f46\u51e0\u4e4e\u6ca1\u6709\u6700\u65b0\u7248\u672c\u7684\u53c2\u8003\u6587\u732e\u3002<\/p>\n<h3>\u53c2\u8003\u7f51\u7ad9&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u63d0: \u30b7\u30b9\u30c6\u30e0\u306b MongoDB 4.4 \u4ee5\u4e0a\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3002 &nbsp; Java 11  [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30083","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MongoDB\u306e\u4f4d\u7f6e\u60c5\u5831\u306bJava\u30e9\u30a4\u30d6\u30e9\u30ea\u306eMorphia\uff08\u30e2\u30eb\u30d5\u30a3\u30a2\uff09\u3067\u53d6\u5f97\u3059\u308b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eMongoDB\u306e\u4f4d\u7f6e\u60c5\u5831\u306bJava\u30e9\u30a4\u30d6\u30e9\u30ea\u306eMorphia\uff08\u30e2\u30eb\u30d5\u30a3\u30a2\uff09\u3067\u53d6\u5f97\u3059\u308b\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, 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