{"id":21600,"date":"2024-01-02T12:10:29","date_gmt":"2024-01-02T12:10:29","guid":{"rendered":"https:\/\/server.hk\/blog\/21600\/"},"modified":"2024-11-14T10:29:59","modified_gmt":"2024-11-14T02:29:59","slug":"how-to-fix-mongodb-error-code-4-nosuchkey","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21600\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey"},"content":{"rendered":"<h1 id=\"how-to-fix-mongodb-error-code-4-nosuchkey-ymCgdKAvGw\">\u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey<\/h1>\n<p>MongoDB \u662f\u4e00\u500b\u53d7\u6b61\u8fce\u7684\u958b\u6e90 NoSQL \u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u9ad8\u6548\u80fd\u3001\u53ef\u64f4\u5c55\u6027\u548c\u9748\u6d3b\u6027\u3002\u7136\u800c\uff0c\u8207\u4efb\u4f55\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u932f\u8aa4\uff0c\u5f71\u97ff\u5176\u6b63\u5e38\u904b\u4f5c\u3002\u5176\u4e2d\u4e4b\u4e00\u662f MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u6210\u56e0\uff0c\u4e26\u63d0\u4f9b\u9010\u6b65\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\u3002<\/p>\n<h2 id=\"understanding-mongodb-error-code-4-nosuchkey-ymCgdKAvGw\">\u4e86\u89e3 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey<\/h2>\n<p>\u7576\u5617\u8a66\u8a2a\u554f\u6587\u4ef6\u4e2d\u4e0d\u5b58\u5728\u7684\u9375\u6642\uff0c\u901a\u5e38\u6703\u767c\u751f MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u6703\u5728\u5c0d MongoDB \u96c6\u5408\u57f7\u884c\u8b80\u53d6\u6216\u5beb\u5165\u64cd\u4f5c\u6642\u9047\u5230\u3002<\/p>\n<p>\u8207 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey \u76f8\u95dc\u7684\u932f\u8aa4\u4fe1\u606f\u901a\u5e38\u6703\u63d0\u4f9b\u6709\u95dc\u5c0e\u81f4\u554f\u984c\u7684\u7279\u5b9a\u9375\u7684\u984d\u5916\u4fe1\u606f\u3002\u5b83\u53ef\u80fd\u985e\u4f3c\u65bc\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n<pre>\r\n\"errmsg\" : \"No such key: 'example_key'\",\r\n\"code\" : 4,\r\n\"codeName\" : \"NoSuchKey\"\r\n<\/pre>\n<h2 id=\"possible-causes-of-mongodb-error-code-4-nosuchkey-ymCgdKAvGw\">MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey \u7684\u53ef\u80fd\u539f\u56e0<\/h2>\n<p>MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey \u6709\u5e7e\u500b\u53ef\u80fd\u7684\u6210\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u62fc\u5beb\u932f\u8aa4\u7684\u9375\uff1a<\/strong>\u8acb\u4ed4\u7d30\u6aa2\u67e5\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u662f\u5426\u62fc\u5beb\u6b63\u78ba\u3002MongoDB \u5c0d\u5927\u5c0f\u5beb\u654f\u611f\uff0c\u5373\u4f7f\u662f\u4e00\u500b\u5c0f\u7684\u62fc\u5beb\u932f\u8aa4\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u7f3a\u5c11\u9375\uff1a<\/strong>\u78ba\u8a8d\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u78ba\u5be6\u5b58\u5728\u65bc\u6587\u4ef6\u4e2d\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5c07\u6703\u9047\u5230\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6587\u4ef6\u7d50\u69cb\u932f\u8aa4\uff1a<\/strong>\u78ba\u4fdd\u6587\u4ef6\u7d50\u69cb\u7b26\u5408\u4f60\u7684\u9810\u671f\u3002\u5982\u679c\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u4f4d\u65bc\u5b50\u6587\u4ef6\u6216\u6578\u7d44\u4e2d\uff0c\u8acb\u78ba\u4fdd\u4f60\u6b63\u78ba\u8a2a\u554f\u5b83\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-mongodb-error-code-4-nosuchkey-ymCgdKAvGw\">\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey<\/h2>\n<p>\u73fe\u5728\u6211\u5011\u5df2\u7d93\u4e86\u89e3\u4e86 MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey \u7684\u53ef\u80fd\u6210\u56e0\uff0c\u8b93\u6211\u5011\u4f86\u63a2\u8a0e\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\uff1a<\/p>\n<h3 id=\"1-check-key-spelling-ymCgdKAvGw\">1. \u6aa2\u67e5\u9375\u7684\u62fc\u5beb<\/h3>\n<p>\u6aa2\u67e5\u4f60\u7684\u4ee3\u78bc\uff0c\u78ba\u4fdd\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u62fc\u5beb\u6b63\u78ba\u3002\u6ce8\u610f\u5927\u5c0f\u5beb\uff0c\u56e0\u70ba MongoDB \u5c0d\u5927\u5c0f\u5beb\u654f\u611f\u3002<\/p>\n<h3 id=\"2-verify-key-existence-ymCgdKAvGw\">2. \u9a57\u8b49\u9375\u7684\u5b58\u5728<\/h3>\n<p>\u78ba\u8a8d\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u78ba\u5be6\u5b58\u5728\u65bc\u6587\u4ef6\u4e2d\u3002\u4f60\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u6587\u4ef6\u7d50\u69cb\u6216\u4f7f\u7528 MongoDB \u67e5\u8a62\u904b\u7b97\u7b26\u5982 $exists \u4f86\u505a\u5230\u9019\u4e00\u9ede\u3002<\/p>\n<h3 id=\"3-adjust-document-structure-ymCgdKAvGw\">3. \u8abf\u6574\u6587\u4ef6\u7d50\u69cb<\/h3>\n<p>\u5982\u679c\u4f60\u5617\u8a66\u8a2a\u554f\u7684\u9375\u4f4d\u65bc\u5b50\u6587\u4ef6\u6216\u6578\u7d44\u4e2d\uff0c\u8acb\u78ba\u4fdd\u4f60\u6b63\u78ba\u5730\u8a2a\u554f\u5b83\u3002\u6aa2\u67e5\u6587\u4ef6\u7684\u7d50\u69cb\u4e26\u76f8\u61c9\u5730\u8abf\u6574\u4f60\u7684\u4ee3\u78bc\u3002<\/p>\n<h3 id=\"4-handle-missing-keys-ymCgdKAvGw\">4. \u8655\u7406\u7f3a\u5c11\u7684\u9375<\/h3>\n<p>\u5982\u679c\u67d0\u4e9b\u6587\u4ef6\u4e2d\u53ef\u80fd\u4e0d\u5b58\u5728\u8a72\u9375\uff0c\u8003\u616e\u5728\u4ee3\u78bc\u4e2d\u5be6\u73fe\u932f\u8aa4\u8655\u7406\u6a5f\u5236\u3002\u9019\u6a23\u4f60\u53ef\u4ee5\u5728\u9375\u7f3a\u5931\u7684\u60c5\u6cc1\u4e0b\u5e73\u7a69\u8655\u7406\uff0c\u907f\u514d\u5f15\u767c\u932f\u8aa4\u3002<\/p>\n<h2 id=\"summary-ymCgdKAvGw\">\u7e3d\u7d50<\/h2>\n<p>MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey \u53ef\u80fd\u5728\u5617\u8a66\u8a2a\u554f\u6587\u4ef6\u4e2d\u4e0d\u5b58\u5728\u7684\u9375\u6642\u767c\u751f\u3002\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u8acb\u78ba\u4fdd\u9375\u62fc\u5beb\u6b63\u78ba\u3001\u5728\u6587\u4ef6\u4e2d\u5b58\u5728\u4e26\u4e14\u5728\u6587\u4ef6\u7d50\u69cb\u4e2d\u6b63\u78ba\u8a2a\u554f\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u4f60\u53ef\u4ee5\u89e3\u6c7a MongoDB \u932f\u8aa4\u4ee3\u78bc &#8211; 4 &#8211; NoSuchKey\uff0c\u4e26\u78ba\u4fdd MongoDB \u6578\u64da\u5eab\u7684\u9806\u66a2\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u53ef\u9760\u4e14\u9ad8\u6548\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u7684\u9999\u6e2f VPS \u8a17\u7ba1\u670d\u52d9\u63d0\u4f9b\u5353\u8d8a\u7684\u6548\u80fd\u548c\u53ef\u64f4\u5c55\u6027\uff0c\u4ee5\u6eff\u8db3\u4f60\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21600","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21600","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21600"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21600\/revisions"}],"predecessor-version":[{"id":23837,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21600\/revisions\/23837"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}