{"id":159957,"date":"2024-11-03T19:05:21","date_gmt":"2024-11-03T11:05:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159957\/"},"modified":"2024-11-03T19:05:22","modified_gmt":"2024-11-03T11:05:22","slug":"mongodb-%e6%95%99%e7%a8%8b%ef%bc%9amongodb-objectid","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159957\/","title":{"rendered":"MongoDB \u6559\u7a0b\uff1aMongoDB ObjectId"},"content":{"rendered":"<h1 id=\"mongodb-%e6%95%99%e7%a8%8b%ef%bc%9amongodb-objectid-xftpwWLqhA\">MongoDB \u6559\u7a0b\uff1aMongoDB ObjectId<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cMongoDB \u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684 NoSQL \u6578\u64da\u5eab\uff0c\u56e0\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002MongoDB \u4f7f\u7528\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u500b\u6587\u6a94\uff0c\u9019\u5c31\u662f ObjectId\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MongoDB \u7684 ObjectId\uff0c\u5305\u62ec\u5176\u7d50\u69cb\u3001\u751f\u6210\u65b9\u5f0f\u53ca\u4f7f\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-objectid%ef%bc%9f-xftpwWLqhA\">\u4ec0\u9ebc\u662f ObjectId\uff1f<\/h2>\n<p>ObjectId \u662f MongoDB \u4e2d\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6587\u6a94\u7684\u6578\u64da\u985e\u578b\u3002\u6bcf\u500b ObjectId \u90fd\u662f 12 \u5b57\u7bc0\u7684 BSON \u985e\u578b\uff0c\u901a\u5e38\u4ee5 24 \u5b57\u7b26\u7684\u5341\u516d\u9032\u5236\u5b57\u7b26\u4e32\u8868\u793a\u3002\u9019\u4f7f\u5f97 ObjectId \u4e0d\u50c5\u80fd\u5920\u552f\u4e00\u6a19\u8b58\u6587\u6a94\uff0c\u9084\u80fd\u5920\u63d0\u4f9b\u4e00\u4e9b\u6709\u95dc\u6587\u6a94\u5275\u5efa\u6642\u9593\u7684\u5143\u6578\u64da\u3002<\/p>\n<h2 id=\"objectid-%e7%9a%84%e7%b5%90%e6%a7%8b-xftpwWLqhA\">ObjectId \u7684\u7d50\u69cb<\/h2>\n<p>ObjectId \u7684\u7d50\u69cb\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u6642\u9593\u6233\uff084 \u5b57\u7bc0\uff09<\/strong>\uff1a\u8868\u793a ObjectId \u88ab\u5275\u5efa\u7684\u6642\u9593\uff0c\u7cbe\u78ba\u5230\u79d2\u3002<\/li>\n<li><strong>\u6a5f\u5668\u8b58\u5225\u78bc\uff083 \u5b57\u7bc0\uff09<\/strong>\uff1a\u7528\u65bc\u6a19\u8b58\u751f\u6210 ObjectId \u7684\u6a5f\u5668\uff0c\u901a\u5e38\u662f\u4e3b\u6a5f\u7684\u7db2\u7d61\u5730\u5740\u7684\u54c8\u5e0c\u503c\u3002<\/li>\n<li><strong>\u9032\u7a0b\u8b58\u5225\u78bc\uff082 \u5b57\u7bc0\uff09<\/strong>\uff1a\u7528\u65bc\u6a19\u8b58\u751f\u6210 ObjectId \u7684\u9032\u7a0b\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u540c\u4e00\u53f0\u6a5f\u5668\u4e0a\u751f\u6210\u591a\u500b ObjectId \u800c\u4e0d\u6703\u91cd\u8907\u3002<\/li>\n<li><strong>\u8a08\u6578\u5668\uff083 \u5b57\u7bc0\uff09<\/strong>\uff1a\u4e00\u500b\u96a8\u6a5f\u589e\u9577\u7684\u8a08\u6578\u5668\uff0c\u7528\u65bc\u78ba\u4fdd\u5728\u540c\u4e00\u79d2\u5167\u751f\u6210\u7684 ObjectId \u4ecd\u7136\u662f\u552f\u4e00\u7684\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%94%9f%e6%88%90-objectid-xftpwWLqhA\">\u5982\u4f55\u751f\u6210 ObjectId<\/h2>\n<p>\u5728 MongoDB \u4e2d\uff0cObjectId \u662f\u81ea\u52d5\u751f\u6210\u7684\uff0c\u7576\u4f60\u63d2\u5165\u4e00\u500b\u65b0\u6587\u6a94\u6642\uff0c\u5982\u679c\u6c92\u6709\u6307\u5b9a _id \u5b57\u6bb5\uff0cMongoDB \u6703\u81ea\u52d5\u70ba\u4f60\u751f\u6210\u4e00\u500b ObjectId\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 MongoDB Shell \u63d2\u5165\u6587\u6a94\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.insertOne({ name: \"Alice\", age: 30 })<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cMongoDB \u6703\u81ea\u52d5\u70ba\u65b0\u63d2\u5165\u7684\u6587\u6a94\u751f\u6210\u4e00\u500b ObjectId \u4f5c\u70ba\u5176 _id \u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-objectid-%e7%9a%84%e5%84%aa%e5%8b%a2-xftpwWLqhA\">\u4f7f\u7528 ObjectId \u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528 ObjectId \u4f5c\u70ba\u6587\u6a94\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u6709\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u5168\u5c40\u552f\u4e00\u6027<\/strong>\uff1aObjectId \u5728\u5168\u5c40\u7bc4\u570d\u5167\u662f\u552f\u4e00\u7684\uff0c\u9019\u4f7f\u5f97\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u4f7f\u7528 MongoDB \u6642\u4e0d\u6703\u51fa\u73fe ID \u91cd\u8907\u7684\u554f\u984c\u3002<\/li>\n<li><strong>\u6642\u9593\u6233\u4fe1\u606f<\/strong>\uff1aObjectId \u4e2d\u5305\u542b\u7684\u6642\u9593\u6233\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u4e86\u89e3\u6587\u6a94\u7684\u5275\u5efa\u6642\u9593\uff0c\u9019\u5728\u6578\u64da\u5206\u6790\u548c\u8abf\u8a66\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/li>\n<li><strong>\u81ea\u52d5\u751f\u6210<\/strong>\uff1a\u958b\u767c\u8005\u7121\u9700\u624b\u52d5\u7ba1\u7406 ID\uff0cMongoDB \u81ea\u52d5\u8655\u7406\u9019\u4e00\u904e\u7a0b\uff0c\u6e1b\u5c11\u4e86\u51fa\u932f\u7684\u53ef\u80fd\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2-objectid-xftpwWLqhA\">\u5982\u4f55\u67e5\u8a62 ObjectId<\/h2>\n<p>\u5728\u67e5\u8a62\u6587\u6a94\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 ObjectId \u4f86\u7cbe\u78ba\u5b9a\u4f4d\u7279\u5b9a\u7684\u6587\u6a94\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7279\u5b9a\u6587\u6a94\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>var id = ObjectId(\"507f1f77bcf86cd799439011\");\ndb.collection.find({ _id: id })<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 ObjectId \u67e5\u8a62\u7279\u5b9a\u7684\u6587\u6a94\uff0c\u9019\u6a23\u53ef\u4ee5\u5feb\u901f\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xftpwWLqhA\">\u7e3d\u7d50<\/h2>\n<p>MongoDB \u7684 ObjectId \u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u5920\u70ba\u6bcf\u500b\u6587\u6a94\u63d0\u4f9b\u552f\u4e00\u6a19\u8b58\u3002\u5b83\u7684\u7d50\u69cb\u4e0d\u50c5\u4fdd\u8b49\u4e86\u5168\u5c40\u552f\u4e00\u6027\uff0c\u9084\u5305\u542b\u4e86\u5275\u5efa\u6642\u9593\u7684\u4fe1\u606f\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7ba1\u7406\u548c\u5206\u6790\u975e\u5e38\u6709\u5e6b\u52a9\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u9084\u662f\u904b\u7dad\u4e2d\uff0c\u7406\u89e3\u548c\u4f7f\u7528 ObjectId \u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684 MongoDB \u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u5730\u5340\u7684\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MongoDB ObjectId\u7684\u7ed3\u6784\u4e0e\u7528\u9014\uff0c\u638c\u63e1\u5982\u4f55\u5728\u6570\u636e\u5e93\u4e2d\u751f\u6210\u548c\u4f7f\u7528ObjectId\uff0c\u63d0\u5347\u6570\u636e\u7ba1\u7406\u6548\u7387\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-159957","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159957","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=159957"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159957\/revisions"}],"predecessor-version":[{"id":159958,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159957\/revisions\/159958"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=159957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=159957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=159957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}