{"id":30017,"date":"2022-11-01T05:58:47","date_gmt":"2022-12-09T12:33:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8-mongodb-%e5%ae%98%e6%96%b9%e6%8f%90%e4%be%9b%e7%9a%84-go-%e8%af%ad%e8%a8%80%e9%a9%b1%e5%8a%a8%ef%bc%88%e4%b8%89%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%9f%a5%e6%89%be\/"},"modified":"2025-08-12T17:04:58","modified_gmt":"2025-08-12T09:04:58","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8-mongodb-%e5%ae%98%e6%96%b9%e6%8f%90%e4%be%9b%e7%9a%84-go-%e8%af%ad%e8%a8%80%e9%a9%b1%e5%8a%a8%ef%bc%88%e4%b8%89%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%9f%a5%e6%89%be","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8-mongodb-%e5%ae%98%e6%96%b9%e6%8f%90%e4%be%9b%e7%9a%84-go-%e8%af%ad%e8%a8%80%e9%a9%b1%e5%8a%a8%ef%bc%88%e4%b8%89%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%9f%a5%e6%89%be\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528 MongoDB \u5b98\u65b9\u63d0\u4f9b\u7684 Go \u8bed\u8a00\u9a71\u52a8\uff08\u4e09\uff09\u8fdb\u884c\u67e5\u627e"},"content":{"rendered":"<p>\u8fd9\u662f\u300a\u5c1d\u8bd5\u4f7f\u7528MongoDB\u5b98\u65b9\u7684Go\u8bed\u8a00\u9a71\u52a8\u7a0b\u5e8f\u300b\u7cfb\u5217\u7684\u7b2c\u4e09\u7bc7\u5e16\u5b50\uff0c\u540d\u4e3a\u201cFind\u7f16\u201d\u3002<\/p>\n<h1>\u67e5\u627e\u63d2\u5165\u6587\u6863<\/p>\n<h2>\u4e0b\u8f7d\u4e1c\u4eac\u90fd\u7684\u5e73\u621031\u5e74\u5730\u4ef7\u516c\u793a\u7684\u4e2a\u522b\u5730\u70b9\u6570\u636e\uff08CSV\u6587\u4ef6\uff09\u3002\u8bf7\u4ece\u4ee5\u4e0bURL\u4e0b\u8f7d\u7528\u4e8eMongoDB\u63d2\u5165\u7684CSV\u6570\u636e\u3002<\/p>\n<h2>\u5c06\u5730\u4ef7\u516c\u793a\u6570\u636e\u767b\u8bb0\u5230MongoDB\u4e2d<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u30c7\u30fc\u30bf\u306fSJIS\u306a\u306e\u3067golang.org\/x\/text\/encoding\/japanese\u3092\u4f7f\u3063\u3066\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u3057\u307e\u3059<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u82f1\u6587\u5b57\u306e\u9805\u76ee\u540d\u3092\u8003\u3048\u308b\u306e\u304c\u9762\u5012\u306a\u306e\u3067\u65e5\u672c\u8a9e\u306b\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>\u9805\u76ee\u540d\u306e\u5148\u982d\u6587\u5b57\u304c\u5927\u6587\u5b57\u306e\u82f1\u5b57\u3067\u306a\u3044\u3068MongoDB\u306bInsert\u3055\u308c\u306a\u3044\u306e\u3067\u3001F\u3092\u4ed8\u3051\u3066\u3001MongoDB\u4e0a\u306e\u9805\u76ee\u540d\u306f\u30bf\u30b0\u306b\u6307\u5b9a\u3057\u307e\u3059<\/p>\n<p>MongoDB\u306bInsert\u3059\u308b\u9805\u76ee\u306f\u90fd\u9053\u5e9c\u770c\u5e02\u533a\u753a\u6751\u30b3\u30fc\u30c9\u304b\u3089\u5730\u7a4d\u307e\u3067\u3068\u3057\u307e\u3059<br \/>\n\u4fa1\u683c\u306a\u3069\u306f\u6570\u5024\u9805\u76ee\u3067\u3059\u304c&#8221;,&#8221;\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u3067&#8221;,&#8221;\u3092\u53d6\u308a\u9664\u304f\u51e6\u7406\u3092\u3057\u3066\u3044\u307e\u3059<br \/>\nInsert\u306fUseSession\u3092\u4f7f\u3063\u3066\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u3068\u3057\u307e\u3057\u305f<\/p>\n<p>insertData\u306e\u30bf\u30a4\u30d7\u306f []\u5730\u4fa1\u516c\u793a\u3068\u3057\u306a\u3044\u3053\u3068<br \/>\nInsert\u4ef6\u6570\u306f2603\u4ef6\u3067\u3057\u305f<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n    <span class=\"s\">\"encoding\/csv\"<\/span>\r\n    <span class=\"s\">\"io\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n    <span class=\"s\">\"os\"<\/span>\r\n    <span class=\"s\">\"strconv\"<\/span>\r\n    <span class=\"s\">\"strings\"<\/span>\r\n\r\n    <span class=\"s\">\"go.mongodb.org\/mongo-driver\/mongo\"<\/span>\r\n    <span class=\"s\">\"go.mongodb.org\/mongo-driver\/mongo\/options\"<\/span>\r\n    <span class=\"s\">\"golang.org\/x\/text\/encoding\/japanese\"<\/span>\r\n    <span class=\"s\">\"golang.org\/x\/text\/transform\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">\u5730\u4fa1\u516c\u793a<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">F\u30b3\u30fc\u30c9<\/span>     <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u30b3\u30fc\u30c9\"<\/span>\r\n    <span class=\"n\">F\u5bfe\u8c61\u5e74<\/span>     <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5bfe\u8c61\u5e74\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u540d<\/span>    <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u6a19\u6e96\u5730\u540d\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u7528\u9014<\/span> <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u6a19\u6e96\u5730\u756a\u53f7\u7528\u9014\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u9023\u756a<\/span> <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u6a19\u6e96\u5730\u756a\u53f7\u9023\u756a\"<\/span>\r\n    <span class=\"n\">F\u533a\u5e02\u753a\u6751\u540d<\/span>   <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u533a\u5e02\u753a\u6751\u540d\"<\/span>\r\n    <span class=\"n\">F\u5730\u756a<\/span>      <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u5730\u756a\"<\/span>\r\n    <span class=\"n\">F\u4f4f\u5c45\u8868\u793a<\/span>    <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u4f4f\u5c45\u8868\u793a\"<\/span>\r\n    <span class=\"n\">F\u5f53\u5e74\u4fa1\u683c<\/span>    <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5f53\u5e74\u4fa1\u683c\"<\/span>\r\n    <span class=\"n\">F\u524d\u5e74\u4fa1\u683c<\/span>    <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u524d\u5e74\u4fa1\u683c\"<\/span>\r\n    <span class=\"n\">F\u5909\u52d5\u7387<\/span>     <span class=\"kt\">float64<\/span> <span class=\"s\">\"\u5909\u52d5\u7387\"<\/span>\r\n    <span class=\"n\">F\u5730\u7a4d<\/span>      <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5730\u7a4d\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">data<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">intData<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">Trim<\/span><span class=\"p\">(<\/span><span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">ReplaceAll<\/span><span class=\"p\">(<\/span><span class=\"n\">data<\/span><span class=\"p\">,<\/span> <span class=\"s\">\",\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"\"<\/span><span class=\"p\">),<\/span> <span class=\"s\">\" \"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">strconv<\/span><span class=\"o\">.<\/span><span class=\"n\">Atoi<\/span><span class=\"p\">(<\/span><span class=\"n\">intData<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">toFloat<\/span><span class=\"p\">(<\/span><span class=\"n\">data<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">float64<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">floatData<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">Trim<\/span><span class=\"p\">(<\/span><span class=\"n\">strings<\/span><span class=\"o\">.<\/span><span class=\"n\">ReplaceAll<\/span><span class=\"p\">(<\/span><span class=\"n\">data<\/span><span class=\"p\">,<\/span> <span class=\"s\">\",\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"\"<\/span><span class=\"p\">),<\/span> <span class=\"s\">\" \"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">strconv<\/span><span class=\"o\">.<\/span><span class=\"n\">ParseFloat<\/span><span class=\"p\">(<\/span><span class=\"n\">floatData<\/span><span class=\"p\">,<\/span> <span class=\"m\">64<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">mainMain<\/span><span class=\"p\">()<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">client<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">mongo<\/span><span class=\"o\">.<\/span><span class=\"n\">NewClient<\/span><span class=\"p\">(<\/span><span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"n\">Client<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">ApplyURI<\/span><span class=\"p\">(<\/span><span class=\"s\">\"mongodb:\/\/localhost:27017\"<\/span><span class=\"p\">))<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Connect<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">());<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">defer<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Disconnect<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"n\">col<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Database<\/span><span class=\"p\">(<\/span><span class=\"s\">\"test\"<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span><span class=\"n\">Collection<\/span><span class=\"p\">(<\/span><span class=\"s\">\"col\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">csvFile<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">os<\/span><span class=\"o\">.<\/span><span class=\"n\">Open<\/span><span class=\"p\">(<\/span><span class=\"s\">\".\/31kouji_chiten_data.csv\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatal<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">defer<\/span> <span class=\"n\">csvFile<\/span><span class=\"o\">.<\/span><span class=\"n\">Close<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">reader<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">csv<\/span><span class=\"o\">.<\/span><span class=\"n\">NewReader<\/span><span class=\"p\">(<\/span><span class=\"n\">transform<\/span><span class=\"o\">.<\/span><span class=\"n\">NewReader<\/span><span class=\"p\">(<\/span><span class=\"n\">csvFile<\/span><span class=\"p\">,<\/span> <span class=\"n\">japanese<\/span><span class=\"o\">.<\/span><span class=\"n\">ShiftJIS<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDecoder<\/span><span class=\"p\">()))<\/span>\r\n    <span class=\"c\">\/\/\u30d8\u30c3\u30c0\u30fc\u90e8\u306e\u8aad\u307f\u98db\u3070\u3057<\/span>\r\n    <span class=\"n\">reader<\/span><span class=\"o\">.<\/span><span class=\"n\">Read<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">reader<\/span><span class=\"o\">.<\/span><span class=\"n\">Read<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">insertData<\/span> <span class=\"p\">[]<\/span><span class=\"k\">interface<\/span><span class=\"p\">{}<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">rec<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">reader<\/span><span class=\"o\">.<\/span><span class=\"n\">Read<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">==<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">EOF<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">break<\/span>\r\n        <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"k\">var<\/span> <span class=\"n\">csvData<\/span> <span class=\"n\">\u5730\u4fa1\u516c\u793a<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u30b3\u30fc\u30c9<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">1<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5bfe\u8c61\u5e74<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">2<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u6a19\u6e96\u5730\u540d<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">3<\/span><span class=\"p\">]<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u7528\u9014<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">4<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u9023\u756a<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">5<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u533a\u5e02\u753a\u6751\u540d<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">6<\/span><span class=\"p\">]<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5730\u756a<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">7<\/span><span class=\"p\">]<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u4f4f\u5c45\u8868\u793a<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">8<\/span><span class=\"p\">]<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5f53\u5e74\u4fa1\u683c<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">9<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u524d\u5e74\u4fa1\u683c<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">10<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5909\u52d5\u7387<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toFloat<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">11<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">csvData<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5730\u7a4d<\/span><span class=\"p\">,<\/span> <span class=\"n\">_<\/span> <span class=\"o\">=<\/span> <span class=\"n\">toInt<\/span><span class=\"p\">(<\/span><span class=\"n\">rec<\/span><span class=\"p\">[<\/span><span class=\"m\">12<\/span><span class=\"p\">])<\/span>\r\n        <span class=\"n\">insertData<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">append<\/span><span class=\"p\">(<\/span><span class=\"n\">insertData<\/span><span class=\"p\">,<\/span> <span class=\"n\">csvData<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">UseSession<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">(),<\/span>\r\n        <span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">mongo<\/span><span class=\"o\">.<\/span><span class=\"n\">SessionContext<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">ctx<\/span><span class=\"o\">.<\/span><span class=\"n\">StartTransaction<\/span><span class=\"p\">()<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"n\">_<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">col<\/span><span class=\"o\">.<\/span><span class=\"n\">InsertMany<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span><span class=\"p\">,<\/span> <span class=\"n\">insertData<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">ctx<\/span><span class=\"o\">.<\/span><span class=\"n\">CommitTransaction<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">})<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">mainMain<\/span><span class=\"p\">();<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatal<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"normal end.\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u627e\u5230\u5730\u4ef7\u516c\u793a\u6570\u636e<\/p>\n<h2>\u627e\u5230\u66f8\u7684\u683c\u5f0fFind\u51fd\u6570\u4f1a\u83b7\u53d6\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u6240\u6709\u6587\u6863\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">Find<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">\u691c\u7d22\u6761\u4ef6<\/span><span class=\"p\">,<\/span> <span class=\"n\">Find<\/span> <span class=\"n\">\u30aa\u30d7\u30b7\u30e7\u30f3<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u9009\u9879\u91cc\uff0coptions.Find()\u5e76\u4e0d\u662f\u4e0a\u6b21\u4f7f\u7528\u7684options.FindOne()\u3002<\/p>\n<h2>\u627e\u5230\u4e00\u4e2a\u7a0b\u5e8f\u7684\u793a\u4f8b\u4ee5\u4e0b\u662f\u641c\u7d22\u6761\u4ef6\u7684\u4f8b\u5b50\uff0c\u8981\u6c42\u662f\u627e\u5230\u5f53\u5e74\u4ef7\u683c\u9ad8\u4e8e1000\u4e07\u5143\u4e14\u6ce2\u52a8\u7387\u8f83\u9ad8\u76845\u4e2a\u8bb0\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">db<\/span><span class=\"p\">.<\/span><span class=\"nx\">col<\/span><span class=\"p\">.<\/span><span class=\"nx\">find<\/span><span class=\"p\">({<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u5f53\u5e74\u4fa1\u683c<\/span><span class=\"dl\">\"<\/span><span class=\"p\">:{<\/span><span class=\"na\">$gte<\/span><span class=\"p\">:<\/span><span class=\"mi\">10000000<\/span><span class=\"p\">}},{<\/span><span class=\"na\">_id<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span><span class=\"p\">}).<\/span><span class=\"nx\">sort<\/span><span class=\"p\">({<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u5909\u52d5\u7387<\/span><span class=\"dl\">\"<\/span><span class=\"p\">:<\/span><span class=\"o\">-<\/span><span class=\"mi\">1<\/span><span class=\"p\">}).<\/span><span class=\"nx\">limit<\/span><span class=\"p\">(<\/span><span class=\"mi\">5<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>cur.Next()\u306f\u6b21\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u8aad\u307f\u8fbc\u307f\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304c\u7121\u3044\u3068\u304d\u306ffalse\u3092\u8fd4\u3059<\/p>\n<p>cur.Decode()\u306f\u8aad\u307f\u8fbc\u3093\u3060\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002Decode\u3067\u304d\u308b\u30bf\u30a4\u30d7\u306f\u3044\u308d\u3044\u308d\u3042\u308a\u307e\u3059\u306e\u3067\u524d\u56de\u306e\u6295\u7a3f\u306eFindOne\u7de8\u3092\u3054\u89a7\u304f\u3060\u3055\u3044<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n\r\n    <span class=\"s\">\"go.mongodb.org\/mongo-driver\/bson\"<\/span>\r\n    <span class=\"s\">\"go.mongodb.org\/mongo-driver\/mongo\"<\/span>\r\n    <span class=\"s\">\"go.mongodb.org\/mongo-driver\/mongo\/options\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">\u5730\u4fa1\u516c\u793a<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">F\u30b3\u30fc\u30c9<\/span>     <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u30b3\u30fc\u30c9\"<\/span>\r\n    <span class=\"n\">F\u5bfe\u8c61\u5e74<\/span>     <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5bfe\u8c61\u5e74\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u540d<\/span>    <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u6a19\u6e96\u5730\u540d\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u7528\u9014<\/span> <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u6a19\u6e96\u5730\u756a\u53f7\u7528\u9014\"<\/span>\r\n    <span class=\"n\">F\u6a19\u6e96\u5730\u756a\u53f7\u9023\u756a<\/span> <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u6a19\u6e96\u5730\u756a\u53f7\u9023\u756a\"<\/span>\r\n    <span class=\"n\">F\u533a\u5e02\u753a\u6751\u540d<\/span>   <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u533a\u5e02\u753a\u6751\u540d\"<\/span>\r\n    <span class=\"n\">F\u5730\u756a<\/span>      <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u5730\u756a\"<\/span>\r\n    <span class=\"n\">F\u4f4f\u5c45\u8868\u793a<\/span>    <span class=\"kt\">string<\/span>  <span class=\"s\">\"\u4f4f\u5c45\u8868\u793a\"<\/span>\r\n    <span class=\"n\">F\u5f53\u5e74\u4fa1\u683c<\/span>    <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5f53\u5e74\u4fa1\u683c\"<\/span>\r\n    <span class=\"n\">F\u524d\u5e74\u4fa1\u683c<\/span>    <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u524d\u5e74\u4fa1\u683c\"<\/span>\r\n    <span class=\"n\">F\u5909\u52d5\u7387<\/span>     <span class=\"kt\">float64<\/span> <span class=\"s\">\"\u5909\u52d5\u7387\"<\/span>\r\n    <span class=\"n\">F\u5730\u7a4d<\/span>      <span class=\"kt\">int<\/span>     <span class=\"s\">\"\u5730\u7a4d\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">mainMain<\/span><span class=\"p\">()<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">client<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">mongo<\/span><span class=\"o\">.<\/span><span class=\"n\">NewClient<\/span><span class=\"p\">(<\/span><span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"n\">Client<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">ApplyURI<\/span><span class=\"p\">(<\/span><span class=\"s\">\"mongodb:\/\/localhost:27017\"<\/span><span class=\"p\">))<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Connect<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">());<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">defer<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Disconnect<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"n\">col<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">client<\/span><span class=\"o\">.<\/span><span class=\"n\">Database<\/span><span class=\"p\">(<\/span><span class=\"s\">\"test\"<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span><span class=\"n\">Collection<\/span><span class=\"p\">(<\/span><span class=\"s\">\"col\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">findOptions<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"n\">Find<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">SetProjection<\/span><span class=\"p\">(<\/span><span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"_id\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">}})<\/span>\r\n    <span class=\"n\">findOptions<\/span><span class=\"o\">.<\/span><span class=\"n\">SetLimit<\/span><span class=\"p\">(<\/span><span class=\"m\">5<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span><span class=\"n\">SetSort<\/span><span class=\"p\">(<\/span><span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"\u5909\u52d5\u7387\"<\/span><span class=\"p\">,<\/span> <span class=\"o\">-<\/span><span class=\"m\">1<\/span><span class=\"p\">}})<\/span>\r\n    <span class=\"n\">filter<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"\u5f53\u5e74\u4fa1\u683c\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$gte\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1000<\/span> <span class=\"o\">*<\/span> <span class=\"m\">10000<\/span><span class=\"p\">}}}}<\/span>\r\n    <span class=\"n\">cur<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">col<\/span><span class=\"o\">.<\/span><span class=\"n\">Find<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">(),<\/span> <span class=\"n\">filter<\/span><span class=\"p\">,<\/span> <span class=\"n\">findOptions<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">for<\/span> <span class=\"n\">cur<\/span><span class=\"o\">.<\/span><span class=\"n\">Next<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">())<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">var<\/span> <span class=\"n\">doc<\/span> <span class=\"n\">\u5730\u4fa1\u516c\u793a<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">cur<\/span><span class=\"o\">.<\/span><span class=\"n\">Decode<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">doc<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"c\">\/\/fmt.Printf(\"%+v\\n\", doc)<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"\u5909\u52d5\u7387:%g%%, \u5f53\u5e74\u4fa1\u683c:%d\u4e07\u5186, \u5730\u756a:%s<\/span><span class=\"se\">\\n<\/span><span class=\"s\">\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">doc<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5909\u52d5\u7387<\/span><span class=\"p\">,<\/span> <span class=\"n\">doc<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5f53\u5e74\u4fa1\u683c<\/span><span class=\"o\">\/<\/span><span class=\"m\">10000<\/span><span class=\"p\">,<\/span> <span class=\"n\">doc<\/span><span class=\"o\">.<\/span><span class=\"n\">F\u5730\u756a<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">mainMain<\/span><span class=\"p\">();<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatal<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"normal end.\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u7528\u76f8\u540c\u7684\u6761\u4ef6\u4e0b\uff0c\u793a\u4f8b\u4f7f\u7528\u4e86Aggregate\u8fdb\u884c\u7f16\u7a0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">db<\/span><span class=\"p\">.<\/span><span class=\"nx\">col<\/span><span class=\"p\">.<\/span><span class=\"nx\">aggregate<\/span><span class=\"p\">([<\/span>\r\n  <span class=\"p\">{<\/span><span class=\"na\">$match<\/span><span class=\"p\">:{<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u5f53\u5e74\u4fa1\u683c<\/span><span class=\"dl\">\"<\/span><span class=\"p\">:{<\/span><span class=\"na\">$gte<\/span><span class=\"p\">:<\/span><span class=\"mi\">10000000<\/span><span class=\"p\">}}},<\/span>\r\n  <span class=\"p\">{<\/span><span class=\"na\">$sort<\/span><span class=\"p\">:{<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u5909\u52d5\u7387<\/span><span class=\"dl\">\"<\/span><span class=\"p\">:<\/span><span class=\"o\">-<\/span><span class=\"mi\">1<\/span><span class=\"p\">}},<\/span>\r\n  <span class=\"p\">{<\/span><span class=\"na\">$limit<\/span><span class=\"p\">:<\/span> <span class=\"mi\">5<\/span><span class=\"p\">},<\/span>\r\n  <span class=\"p\">{<\/span><span class=\"na\">$project<\/span><span class=\"p\">:{<\/span><span class=\"na\">_id<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span><span class=\"p\">}}<\/span>\r\n<span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>    <span class=\"n\">filter<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"\u5f53\u5e74\u4fa1\u683c\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$gte\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1000<\/span> <span class=\"o\">*<\/span> <span class=\"m\">10000<\/span><span class=\"p\">}}}}<\/span>\r\n    <span class=\"n\">pipeline<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">A<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$match\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">filter<\/span><span class=\"p\">}},<\/span>\r\n        <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$sort\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"\u5909\u52d5\u7387\"<\/span><span class=\"p\">,<\/span> <span class=\"o\">-<\/span><span class=\"m\">1<\/span><span class=\"p\">}}}},<\/span>\r\n        <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$limit\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">5<\/span><span class=\"p\">}},<\/span>\r\n        <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"$project\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">bson<\/span><span class=\"o\">.<\/span><span class=\"n\">D<\/span><span class=\"p\">{{<\/span><span class=\"s\">\"_id\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">}}}},<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">cur<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">col<\/span><span class=\"o\">.<\/span><span class=\"n\">Aggregate<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">(),<\/span> <span class=\"n\">pipeline<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u300a\u5c1d\u8bd5\u4f7f\u7528MongoDB\u5b98\u65b9\u7684Go\u8bed\u8a00\u9a71\u52a8\u7a0b\u5e8f\u300b\u7cfb\u5217\u7684\u7b2c\u4e09\u7bc7\u5e16\u5b50\uff0c\u540d\u4e3a\u201cFind\u7f16\u201d\u3002 \u67e5\u627e\u63d2\u5165\u6587\u6863 \u4e0b\u8f7d [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30017","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>\u5c1d\u8bd5\u4f7f\u7528 MongoDB \u5b98\u65b9\u63d0\u4f9b\u7684 Go \u8bed\u8a00\u9a71\u52a8\uff08\u4e09\uff09\u8fdb\u884c\u67e5\u627e - Blog - 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