{"id":70274,"date":"2026-02-01T18:49:16","date_gmt":"2026-02-01T10:49:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/70274.html"},"modified":"2026-02-01T18:49:16","modified_gmt":"2026-02-01T10:49:16","slug":"%e3%80%90mongodb%e3%80%91crud-%e6%93%8d%e4%bd%9c%e5%85%a5%e9%97%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/70274.html","title":{"rendered":"\u3010MongoDB\u3011CRUD \u64cd\u4f5c\u5165\u95e8"},"content":{"rendered":"<h2>&#x1f6e0;\ufe0f MongoDB\u7684CRUD \u64cd\u4f5c\u5165\u95e8<\/h2>\n<h3>\u5f15\u8a00 &#x1f3af;<\/h3>\n<p>\u54c8\u55bd\u5404\u4f4d\u5c0f\u4f19\u4f34&#xff0c;\u6211\u662f\u4f60\u4eec\u7684\u8001\u670b\u53cb\u8001\u66f9&#xff01;\u4eca\u5929\u6211\u4eec\u7ec8\u4e8e\u8981\u5f00\u59cb\u771f\u6b63\u52a8\u624b\u5e72\u6d3b\u5566 \u2014\u2014 \u5b66\u4e60 MongoDB \u6700\u6838\u5fc3\u7684\u64cd\u4f5c&#xff1a;CRUD&#xff08;Create, Read, Update, 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punctuation\">.<\/span><span class=\"token function\">find<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">category<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u624b\u673a&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53ea\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5339\u914d\u9879<\/span><br \/>\ndb<span class=\"token punctuation\">.<\/span>products<span class=\"token punctuation\">.<\/span><span class=\"token function\">findOne<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;iPhone 15 Pro&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token 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Delete&#xff08;\u5220\u9664&#xff09;&#xff1a;\u62dc\u62dc\u4e86\u60a8\u561e &#x1f44b;<\/h3>\n<h4>\u2705\u5220\u9664\u5355\u4e2a\u6587\u6863&#xff08;deleteOne()&#xff09;&#xff1a;<\/h4>\n<p><span class=\"token comment\">\/\/ \u5220\u9664\u7b2c\u4e00\u4e2a\u540d\u4e3a iPad Pro \u7684\u6587\u6863<\/span><br \/>\ndb<span class=\"token punctuation\">.<\/span>products<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteOne<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;iPad Pro&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>\u2705\u5220\u9664\u591a\u4e2a\u6587\u6863&#xff08;deleteMany()&#xff09;&#xff1a;<\/h4>\n<p><span class=\"token comment\">\/\/ \u5220\u9664\u6240\u6709\u5e93\u5b58\u4e0d\u8db3\u7684\u5546\u54c1<\/span><br \/>\ndb<span class=\"token punctuation\">.<\/span>products<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteMany<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">inStock<\/span><span class=\"token operator\">:<\/span> <span class=\"token boolean\">false<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>\u2705\u6e05\u7a7a\u6574\u4e2a\u96c6\u5408&#xff1a;<\/h4>\n<p>db<span class=\"token punctuation\">.<\/span>products<span class=\"token punctuation\">.<\/span><span class=\"token function\">deleteMany<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u26a0\ufe0f \u5371\u9669\u8b66\u544a&#xff1a;\u5220\u9664\u4e0d\u53ef\u9006&#xff0c;\u8bf7\u8c28\u614e\u64cd\u4f5c&#xff01;<\/p>\n<p>\u8001\u66f9\u5efa\u8bae&#xff1a;\u5220\u9664\u524d\u5148\u505a\u4e00\u6b21\u67e5\u8be2\u786e\u8ba4\u76ee\u6807\u8303\u56f4&#xff0c;\u907f\u514d\u8bef\u5220\u91cd\u8981\u6570\u636e\u3002<\/p>\n<hr \/>\n<h3>5\ufe0f\u20e3 \u6d41\u7a0b\u56fe\u8bb2\u89e3&#xff1a;CRUD \u6574\u4f53\u6d41\u7a0b &#x1f504;<\/h3>\n<p>  #mermaid-svg-9tr6JLfCZOY8ByQf{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-9tr6JLfCZOY8ByQf .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-9tr6JLfCZOY8ByQf .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear 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.node .label,#mermaid-svg-9tr6JLfCZOY8ByQf .image-shape .label,#mermaid-svg-9tr6JLfCZOY8ByQf .icon-shape .label{text-align:center;}#mermaid-svg-9tr6JLfCZOY8ByQf .node.clickable{cursor:pointer;}#mermaid-svg-9tr6JLfCZOY8ByQf .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-9tr6JLfCZOY8ByQf .arrowheadPath{fill:#333333;}#mermaid-svg-9tr6JLfCZOY8ByQf .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-9tr6JLfCZOY8ByQf .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-9tr6JLfCZOY8ByQf .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-9tr6JLfCZOY8ByQf .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-9tr6JLfCZOY8ByQf .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-9tr6JLfCZOY8ByQf .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-9tr6JLfCZOY8ByQf .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-9tr6JLfCZOY8ByQf .cluster text{fill:#333;}#mermaid-svg-9tr6JLfCZOY8ByQf .cluster span{color:#333;}#mermaid-svg-9tr6JLfCZOY8ByQf div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-9tr6JLfCZOY8ByQf .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-9tr6JLfCZOY8ByQf rect.text{fill:none;stroke-width:0;}#mermaid-svg-9tr6JLfCZOY8ByQf .icon-shape,#mermaid-svg-9tr6JLfCZOY8ByQf .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-9tr6JLfCZOY8ByQf .icon-shape p,#mermaid-svg-9tr6JLfCZOY8ByQf .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-9tr6JLfCZOY8ByQf .icon-shape rect,#mermaid-svg-9tr6JLfCZOY8ByQf .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-9tr6JLfCZOY8ByQf .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-9tr6JLfCZOY8ByQf .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-9tr6JLfCZOY8ByQf :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>Create<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>Read<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>Update<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>Delete<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5ba2\u6237\u7aef\u53d1\u8d77\u8bf7\u6c42<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5224\u65ad\u64cd\u4f5c\u7c7b\u578b<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u63d2\u5165\u6587\u6863<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u67e5\u8be2\u6587\u6863<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u66f4\u65b0\u6587\u6863<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5220\u9664\u6587\u6863<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8fd4\u56de\u63d2\u5165\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8fd4\u56de\u67e5\u8be2\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8fd4\u56de\u66f4\u65b0\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u8fd4\u56de\u5220\u9664\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<hr \/>\n<h3>6\ufe0f\u20e3 10\u5927\u9762\u8bd5\u9898&#xff1a;\u4f60\u80fd\u7b54\u5bf9\u51e0\u9053&#xff1f;&#x1f9e0;<\/h3>\n<table>\n<tr>\u5e8f\u53f7\u95ee\u9898\u7b54\u6848\u8981\u70b9<\/tr>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>insertOne() \u548c insertMany() \u7684\u533a\u522b&#xff1f;<\/td>\n<td>\u524d\u8005\u63d2\u5165\u4e00\u6761&#xff0c;\u540e\u8005\u53ef\u6279\u91cf\u63d2\u5165<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>\u67e5\u8be2\u65f6\u5982\u4f55\u8df3\u8fc7\u67d0\u4e9b\u5b57\u6bb5&#xff1f;<\/td>\n<td>\u4f7f\u7528\u6295\u5f71 { field: 0 }<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>$set \u548c $inc \u5206\u522b\u7528\u4e8e\u4ec0\u4e48\u573a\u666f&#xff1f;<\/td>\n<td>set \u8bbe\u7f6e\u4efb\u610f\u503c&#xff0c;inc \u589e\u51cf\u6570\u503c<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>findOne() \u548c find() \u8fd4\u56de\u7ed3\u679c\u6709\u4f55\u4e0d\u540c&#xff1f;<\/td>\n<td>findOne \u8fd4\u56de\u5bf9\u8c61&#xff0c;find \u8fd4\u56de\u6e38\u6807<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>\u66f4\u65b0\u64cd\u4f5c\u662f\u5426\u4f1a\u81ea\u52a8\u521b\u5efa\u65b0\u5b57\u6bb5&#xff1f;<\/td>\n<td>\u4f1a&#xff0c;\u9664\u975e\u8bbe\u7f6e\u4e86 strict validation<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>\u5982\u4f55\u9650\u5236\u67e5\u8be2\u8fd4\u56de\u7684\u6570\u91cf&#xff1f;<\/td>\n<td>\u4f7f\u7528 limit(n) \u65b9\u6cd5<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>\u5220\u9664\u64cd\u4f5c\u662f\u5426\u652f\u6301\u4e8b\u52a1&#xff1f;<\/td>\n<td>\u652f\u6301&#xff0c;\u5728\u4e8b\u52a1\u5757\u5185\u6267\u884c\u5373\u53ef<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>\u4ec0\u4e48\u60c5\u51b5\u4e0b\u4f1a\u5bfc\u81f4\u66f4\u65b0\u5931\u8d25&#xff1f;<\/td>\n<td>\u6761\u4ef6\u4e0d\u5339\u914d\u3001\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u7b49<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>\u5982\u4f55\u7edf\u8ba1\u67d0\u4e2a\u96c6\u5408\u7684\u6587\u6863\u603b\u6570&#xff1f;<\/td>\n<td>db.collection.countDocuments()<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>\u6279\u91cf\u63d2\u5165\u65f6\u9047\u5230\u90e8\u5206\u5931\u8d25\u8be5\u5982\u4f55\u5904\u7406&#xff1f;<\/td>\n<td>\u8bbe\u7f6e ordered: false \u53c2\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>7\ufe0f\u20e3 \u603b\u7ed3\u8868\u683c&#xff1a;\u4eca\u65e5\u91cd\u70b9\u56de\u987e &#x1f4dd;<\/h3>\n<table>\n<tr>\u5206\u7c7b\u5185\u5bb9<\/tr>\n<tbody>\n<tr>\n<td>\u63d2\u5165\u65b9\u6cd5<\/td>\n<td>insertOne(), insertMany()<\/td>\n<\/tr>\n<tr>\n<td>\u67e5\u8be2\u8bed\u6cd5<\/td>\n<td>find(), findOne(), \u6761\u4ef6\u64cd\u4f5c\u7b26<\/td>\n<\/tr>\n<tr>\n<td>\u66f4\u65b0\u64cd\u4f5c<\/td>\n<td>updateOne(), updateMany(), <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           s<\/p>\n<p>           e<\/p>\n<p>           t<\/p>\n<p>           \/<\/p>\n<p>          set\/<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">se<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mord\">\/<\/span><\/span><\/span><\/span><\/span>inc\/$push<\/td>\n<\/tr>\n<tr>\n<td>\u5220\u9664\u547d\u4ee4<\/td>\n<td>deleteOne(), 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