{"id":247427,"date":"2024-01-02T22:09:26","date_gmt":"2024-01-02T14:09:26","guid":{"rendered":"https:\/\/www.idc.net\/help\/247427\/"},"modified":"2024-01-02T22:09:26","modified_gmt":"2024-01-02T14:09:26","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-5-%e5%9b%be%e5%8c%85%e5%90%ab%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247427\/","title":{"rendered":"\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 &#8211; 5 &#8211; \u56fe\u5305\u542b\u5faa\u73af"},"content":{"rendered":"<p><title id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-5-%e5%9b%be%e5%8c%85%e5%90%ab%e5%be%aa%e7%8e%af-oxFWpVJWjb\">\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af<\/title><\/p>\n<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-5-%e5%9b%be%e5%8c%85%e5%90%ab%e5%be%aa%e7%8e%af-oxFWpVJWjb\">\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af<\/h1>\n<p>MongoDB\u662f\u4e00\u79cd\u6d41\u884c\u7684\u5f00\u6e90\u6587\u6863\u6570\u636e\u5e93\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u548c\u9879\u76ee\u4e2d\u3002\u7136\u800c\uff0c\u5c31\u50cf\u4efb\u4f55\u5176\u4ed6\u8f6f\u4ef6\u4e00\u6837\uff0cMongoDB\u4e5f\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af\u3002<\/p>\n<h2 id=\"%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-5-%e5%9b%be%e5%8c%85%e5%90%ab%e5%be%aa%e7%8e%af-oxFWpVJWjb\">\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af<\/h2>\n<p>\u5f53\u4f60\u5728MongoDB\u4e2d\u4f7f\u7528\u56fe\u5f62\u67e5\u8be2\u65f6\uff0c\u6709\u65f6\u53ef\u80fd\u4f1a\u9047\u5230\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af\u3002\u8fd9\u4e2a\u9519\u8bef\u901a\u5e38\u8868\u793a\u4f60\u7684\u56fe\u5f62\u6570\u636e\u4e2d\u5b58\u5728\u5faa\u73af\u5f15\u7528\uff0c\u5bfc\u81f4\u67e5\u8be2\u65e0\u6cd5\u6b63\u5e38\u6267\u884c\u3002<\/p>\n<p>\u5faa\u73af\u5f15\u7528\u662f\u6307\u56fe\u5f62\u6570\u636e\u4e2d\u7684\u8282\u70b9\u4e4b\u95f4\u5b58\u5728\u76f8\u4e92\u4f9d\u8d56\u7684\u5173\u7cfb\uff0c\u5f62\u6210\u4e86\u4e00\u4e2a\u95ed\u73af\u3002\u5f53\u4f60\u5c1d\u8bd5\u67e5\u8be2\u8fd9\u6837\u7684\u56fe\u5f62\u6570\u636e\u65f6\uff0cMongoDB\u4f1a\u68c0\u6d4b\u5230\u5faa\u73af\u5f15\u7528\u5e76\u629b\u51fa\u9519\u8bef\u4ee3\u7801 - 5\u3002<\/p>\n<h2 id=\"%e4%bf%ae%e5%a4%8d%e6%96%b9%e6%b3%95-oxFWpVJWjb\">\u4fee\u590d\u65b9\u6cd5<\/h2>\n<p>\u8981\u4fee\u590d\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af\uff0c\u4f60\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5\u56fe\u5f62\u6570\u636e\uff1a\u9996\u5148\uff0c\u4f60\u9700\u8981\u68c0\u67e5\u4f60\u7684\u56fe\u5f62\u6570\u636e\uff0c\u627e\u51fa\u662f\u5426\u5b58\u5728\u5faa\u73af\u5f15\u7528\u7684\u8282\u70b9\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528MongoDB\u7684\u805a\u5408\u6846\u67b6\u6765\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/li>\n<\/ol>\n<pre><code>\ndb.graph.aggregate([\n  {\n    $graphLookup: {\n      from: \"graph\",\n      startWith: \"$_id\",\n      connectFromField: \"_id\",\n      connectToField: \"parentId\",\n      as: \"ancestors\",\n      maxDepth: 10,\n      depthField: \"depth\"\n    }\n  },\n  {\n    $match: {\n      ancestors: { $elemMatch: { _id: \"$_id\" } }\n    }\n  }\n])\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u805a\u5408\u67e5\u8be2\u5c06\u8fd4\u56de\u5305\u542b\u5faa\u73af\u5f15\u7528\u7684\u8282\u70b9\u3002<\/p>\n<ol start=\"2\">\n<li>\u89e3\u51b3\u5faa\u73af\u5f15\u7528\uff1a\u4e00\u65e6\u4f60\u627e\u5230\u4e86\u5faa\u73af\u5f15\u7528\u7684\u8282\u70b9\uff0c\u4f60\u9700\u8981\u89e3\u51b3\u5b83\u4eec\u3002\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3\u5faa\u73af\u5f15\u7528\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u4f60\u7684\u6570\u636e\u6a21\u578b\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002<\/li>\n<\/ol>\n<p>\u4e00\u79cd\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\u901a\u8fc7\u4fee\u6539\u6570\u636e\u6a21\u578b\u6765\u6d88\u9664\u5faa\u73af\u5f15\u7528\u3002\u4f60\u53ef\u4ee5\u91cd\u65b0\u8bbe\u8ba1\u4f60\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5c06\u5faa\u73af\u5f15\u7528\u7684\u8282\u70b9\u62c6\u5206\u4e3a\u72ec\u7acb\u7684\u5b9e\u4f53\uff0c\u4ee5\u907f\u514d\u5faa\u73af\u5f15\u7528\u7684\u95ee\u9898\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u89e3\u51b3\u65b9\u6cd5\u662f\u4f7f\u7528MongoDB\u7684\u4e8b\u52a1\u529f\u80fd\u6765\u5904\u7406\u5faa\u73af\u5f15\u7528\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52a1\u6765\u786e\u4fdd\u5728\u66f4\u65b0\u56fe\u5f62\u6570\u636e\u65f6\u4e0d\u4f1a\u51fa\u73b0\u5faa\u73af\u5f15\u7528\u3002<\/p>\n<ol start=\"3\">\n<li>\u91cd\u65b0\u6267\u884c\u67e5\u8be2\uff1a\u4e00\u65e6\u4f60\u89e3\u51b3\u4e86\u5faa\u73af\u5f15\u7528\u7684\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u91cd\u65b0\u6267\u884c\u4f60\u7684\u56fe\u5f62\u67e5\u8be2\u3002\u73b0\u5728\uff0c\u4f60\u5e94\u8be5\u80fd\u591f\u6210\u529f\u5730\u6267\u884c\u67e5\u8be2\u800c\u4e0d\u518d\u9047\u5230\u9519\u8bef\u4ee3\u7801 - 5\u3002<\/li>\n<\/ol>\n<h2 id=\"%e6%80%bb%e7%bb%93-oxFWpVJWjb\">\u603b\u7ed3<\/h2>\n<p>\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af\u9700\u8981\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a\u68c0\u67e5\u56fe\u5f62\u6570\u636e\uff0c\u89e3\u51b3\u5faa\u73af\u5f15\u7528\uff0c\u91cd\u65b0\u6267\u884c\u67e5\u8be2\u3002\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u4f60\u5e94\u8be5\u80fd\u591f\u6210\u529f\u5730\u4fee\u590d\u8fd9\u4e2a\u9519\u8bef\u5e76\u7ee7\u7eed\u4f7f\u7528MongoDB\u8fdb\u884c\u56fe\u5f62\u67e5\u8be2\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u89e3\u51b3\u65b9\u6848\uff0c\u540e\u6d6a\u4e91\u662f\u4e00\u4e2a\u503c\u5f97\u8003\u8651\u7684\u9009\u62e9\u3002\u4ed6\u4eec\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u4ea7\u54c1\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u573a\u666f\u3002\u65e0\u8bba\u4f60\u662f\u4e2a\u4eba\u7528\u6237\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u540e\u6d6a\u4e91\u90fd\u80fd\u4e3a\u4f60\u63d0\u4f9b\u9ad8\u6027\u80fd\u548c\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u3002<\/p>\n<p>\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u540e\u6d6a\u4e91\u7684\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee\u5b98\u7f51\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af \u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 5 - \u56fe\u5305\u542b\u5faa\u73af [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7038],"tags":[],"class_list":["post-247427","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=247427"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247427\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}