{"id":48024,"date":"2023-11-22T11:21:40","date_gmt":"2023-04-02T19:23:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cmongodb%e6%9e%84%e5%bb%ba%e7%9a%84%ef%bc%8c%e5%ad%a6%e4%b9%a0graphql%e7%9a%84%e8%bf%87%e7%a8%8b%e3%80%82\/"},"modified":"2024-05-04T10:16:05","modified_gmt":"2024-05-04T02:16:05","slug":"%e4%bd%bf%e7%94%a8node-js%e5%92%8cmongodb%e6%9e%84%e5%bb%ba%e7%9a%84%ef%bc%8c%e5%ad%a6%e4%b9%a0graphql%e7%9a%84%e8%bf%87%e7%a8%8b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cmongodb%e6%9e%84%e5%bb%ba%e7%9a%84%ef%bc%8c%e5%ad%a6%e4%b9%a0graphql%e7%9a%84%e8%bf%87%e7%a8%8b%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Node.js\u548cMongoDB\u6784\u5efa\u7684\uff0c\u5b66\u4e60GraphQL\u7684\u8fc7\u7a0b"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u7531\u4e8e\u6211\u5728\u7ef4\u62a4\u548c\u4fee\u6539\u9636\u6bb5\u52a0\u5165\u4e86\u9879\u76ee\uff0c\u6240\u4ee5\u6ca1\u6709\u505a\u8fc7\u57fa\u672c\u7684\u64cd\u4f5c\uff0c\u5982\u521b\u5efa\u67b6\u6784\u7684\u5de5\u4f5c\u3002\u53e6\u5916\uff0c\u6211\u8fd8\u6ca1\u6709\u4f7f\u7528\u8fc7NoSQL\u6570\u636e\u5e93\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u5b66\u4e60\u4e00\u4e0b\uff0c\u5c1d\u8bd5\u7528Node.js+MongoDB\u6765\u5efa\u7acbGraphQL\u670d\u52a1\u5668\u3002<\/p>\n<p>\u8fd9\u6b21\u521b\u5efa\u7684\u9879\u76ee\u5df2\u7ecf\u4e0a\u4f20\u5230GitHub\u4e0a\u4e86\u3002<\/p>\n<h1>GraphQL\u7684\u597d\u5904<\/h1>\n<p>GraphQL\u6700\u5927\u7684\u7279\u70b9\u5728\u4e8e\u5b83\u662f\u4e00\u4e2a\u5355\u4e00\u7684\u7ec8\u7aef\u70b9\uff0c\u56e0\u6b64\u4e0eREST\u8fdb\u884c\u6bd4\u8f83\u7684\u6587\u7ae0\u5230\u5904\u90fd\u6709\uff08\u4f8b\u5982, \u8fd9\u91cc\uff09\u3002<\/p>\n<p>\u4f7f\u7528GraphQL\u53ef\u4ee5\u89e3\u51b3\u5728\u5c1d\u8bd5\u4f7f\u7528REST\u83b7\u53d6\u6240\u6709\u9700\u8981\u7684\u6570\u636e\u65f6\u53ef\u80fd\u9047\u5230\u7684\u4ee5\u4e0b\u95ee\u9898\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8907\u6570\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3078\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u3082\u4e00\u7dd2\u306b\u53d6\u5f97\u3055\u308c\u3066\u3057\u307e\u3046<\/ul>\n<h1>\u670d\u52a1\u5668\u6784\u5efa<\/h1>\n<p>\u521b\u5efa\u4e00\u4e2a\u9002\u5f53\u7684\u6587\u4ef6\u5939\uff08graphql-server-practice\uff09\u5e76\u8fd0\u884cyarn init\u3002\u7136\u540e\u6309\u7167\u4ee5\u4e0b\u914d\u7f6e\u521b\u5efa\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/9-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-24 20.50.27.png\" \/><\/div>\n<p>\u6211\u4eec\u5c06\u5728Schema.js\u4e2d\u8bb0\u5f55Schema\u3001Query\u548cMutation\u3002<\/p>\n<h2>\u521b\u5efa\u6a21\u5f0f<\/h2>\n<p>\u4e3a\u4e86\u7ec3\u4e60\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e09\u4e2a\u6a21\u5f0f\uff1aUser\u3001Hobby\u548cPost\u3002<br \/>\nUser\u4e0e\u591a\u4e2aHobby\u548cPost\u4e4b\u95f4\u5f62\u6210\u4e86\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u3002<\/p>\n<p>\u9996\u5148\uff0c\u901a\u8fc7\u8fd0\u884c&#8221;yarn add graphql&#8221;\u547d\u4ee4\u5b89\u88c5graphql\u5305\uff0c\u7136\u540e\u5728schema.js\u6587\u4ef6\u4e2d\u52a0\u8f7d\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">graphql<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLID<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLString<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLInt<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLSchema<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">GraphQLList<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">graphql<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u7528UserType\u4f5c\u4e3aUser\u7684\u6a21\u5f0f\u521b\u5efa\u3002\u901a\u8fc7GraphQLObjectType\u8fdb\u884c\u5c01\u88c5\uff0c\u53ef\u4ee5\u5b9a\u4e49name\u3001description\u548cfields\u7684\u6a21\u5f0f\u3002<\/p>\n<p>\u5728GraphQL\u4e2d\uff0c\u6211\u4eec\u5c06fields\u7684id\u3001name\u3001age\u548cprofession\u5b9a\u4e49\u4e3aGraphQLID\u3001GraphQLString\u3001GraphQLInt\u548cGraphQLString\u8fd9\u4e9b\u6807\u91cf\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">UserType<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">User<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Documentation for user...<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\r\n    <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLInt<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n  <span class=\"p\">}),<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u540c\u6837\u5730\uff0c\u6211\u4eec\u4e5f\u5c06\u4e3aHobbyType\u548cPostType\u521b\u5efa\u76f8\u5e94\u7684\u9009\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">HobbyType<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Hobby<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Hobby description<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\r\n    <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">title<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n  <span class=\"p\">}),<\/span>\r\n<span class=\"p\">});<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">PostType<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Post<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Post description<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\r\n    <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">comment<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n  <span class=\"p\">}),<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u7ecf\u521b\u5efa\u4e863\u4e2aSchema\uff0c\u4f46\u662f\u5728\u76ee\u524d\u7684\u72b6\u6001\u4e0b\uff0cUser\u548cPost\u4ee5\u53caUser\u548cHobby\u4e4b\u95f4\u7684\u5173\u7cfb\u8fd8\u6ca1\u6709\u88ab\u5b9a\u4e49\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8003\u8651\u8fd9\u4e9b\u5173\u7cfb\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u6765\u601d\u8003\u4e00\u4e0b\u7528\u6237\u548c\u5e16\u5b50\u7684\u4f8b\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">UserType<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">User<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Documentation for user...<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\r\n    <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLInt<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">posts<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLList<\/span><span class=\"p\">(<\/span><span class=\"nx\">PostType<\/span><span class=\"p\">),<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">postsData<\/span><span class=\"p\">.<\/span><span class=\"nx\">filter<\/span><span class=\"p\">((<\/span><span class=\"nx\">data<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">userId<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">parent<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n  <span class=\"p\">}),<\/span>\r\n<span class=\"p\">});<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">PostType<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Post<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Post description<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\r\n    <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">comment<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"na\">user<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">UserType<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">usersData<\/span><span class=\"p\">.<\/span><span class=\"nx\">find<\/span><span class=\"p\">((<\/span><span class=\"nx\">data<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">parent<\/span><span class=\"p\">.<\/span><span class=\"nx\">userId<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n  <span class=\"p\">}),<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u5bf9\u4e8e\u6bcf\u4e2aUser\uff0c\u90fd\u5b58\u5728\u591a\u4e2aPost\u3002\u56e0\u6b64\uff0c\u5728UserType\u7684\u5b57\u6bb5\u4e2d\uff0c\u65b0\u521b\u5efa\u7684posts\u5c06\u6210\u4e3aPostType\u7684\u6570\u7ec4\u7c7b\u578b\uff0c\u5e76\u88ab\u5b9a\u4e49\u4e3anew GraphQLList(PostType)\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"nx\">posts<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"nl\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLList<\/span><span class=\"p\">(<\/span><span class=\"nx\">PostType<\/span><span class=\"p\">),<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">postsData<\/span><span class=\"p\">.<\/span><span class=\"nx\">filter<\/span><span class=\"p\">((<\/span><span class=\"nx\">data<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">userId<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">parent<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n<\/code><\/pre>\n<p>\u53e6\u5916\uff0cresolve\u4f1a\u5b9a\u4e49\u8981\u663e\u793a\u7ed9\u54ea\u4e2a\u7528\u6237\u7684\u5e16\u5b50\u3002parent\u6307\u7684\u662f\u7236\u7ea7\u5b57\u6bb5\uff08\u5728\u8fd9\u91cc\u662fUserType\uff09\uff0c\u5728\u4ee5\u4e0a\u64cd\u4f5c\u4e2d\u5b83\u53ea\u4f1a\u83b7\u53d6\u5177\u6709\u4e0e\u7528\u6237id\u76f8\u7b49\u7684userId\u7684\u5e16\u5b50\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">usersData<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n  <span class=\"p\">{<\/span> <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">1<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">\u5c71\u7530\u52dd\u5df1<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">36<\/span><span class=\"p\">,<\/span> <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">SASUKE<\/span><span class=\"dl\">'<\/span> <span class=\"p\">},<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">postsData<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n  <span class=\"p\">{<\/span> <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">1<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">comment<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">\u50d5\u306b\u306fSASUKE\u3057\u304b\u306a\u3044\u3093\u3067\u3059<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">userId<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">1<\/span><span class=\"dl\">'<\/span> <span class=\"p\">},<\/span>\r\n  <span class=\"p\">{<\/span> <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">2<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">comment<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">\u5b8c\u5168\u5236\u8987\u304c\u3057\u305f\u3044\u3093\u3067\u3059<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">userId<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">1<\/span><span class=\"dl\">'<\/span> <span class=\"p\">},<\/span>\r\n<span class=\"p\">];<\/span>\r\n<\/code><\/pre>\n<h2>\u521b\u5efa\u67e5\u8be2<\/h2>\n<p>\u5728GraphQL\u4e2d\uff0c\u67e5\u8be2\u548cSchema\u4e00\u6837\uff0c\u4f7f\u7528GraphQLObjectType\u8fdb\u884c\u5b9a\u4e49\u3002\u8ba9\u6211\u4eec\u8bd5\u7740\u521b\u5efa\u4e00\u4e2auser\u67e5\u8be2\uff0c\u7528\u4e8e\u83b7\u53d6\u6307\u5b9aid\u7684\u7528\u6237\uff0c\u5e76\u4e14\u521b\u5efa\u4e00\u4e2ausers\u67e5\u8be2\uff0c\u7528\u4e8e\u83b7\u53d6\u6240\u6709\u7528\u6237\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">RootQuery<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">RootQueryType<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">description<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Description<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"na\">user<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">UserType<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">args<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLID<\/span> <span class=\"p\">}<\/span> <span class=\"p\">},<\/span>\r\n\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">usersData<\/span><span class=\"p\">.<\/span><span class=\"nx\">find<\/span><span class=\"p\">((<\/span><span class=\"nx\">data<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n\r\n    <span class=\"na\">users<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLList<\/span><span class=\"p\">(<\/span><span class=\"nx\">UserType<\/span><span class=\"p\">),<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">usersData<\/span><span class=\"p\">;<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n  <span class=\"p\">},<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u7528\u6237\u67e5\u8be2\u4e2d\u4f7f\u7528id\u4f5c\u4e3a\u53c2\u6570\uff08args\uff09\uff0c\u56e0\u6b64\u5728fields\u4e2d\u5bf9args\u8fdb\u884c\u7c7b\u578b\u5b9a\u4e49\u3002\u5728resolve\u4e2d\uff0c\u7f16\u5199\u4e86\u4e00\u4e2a\u5904\u7406\u7a0b\u5e8f\uff0c\u4ec5\u83b7\u53d6\u4e0eargs\u7684id\u76f8\u540c\u7684\u6570\u636e\u3002<\/p>\n<p>\u5728users\u67e5\u8be2\u4e2d\uff0c\u6211\u4eec\u53ea\u9700\u8981\u83b7\u53d6\u6240\u6709\u6570\u636e\uff0c\u6240\u4ee5\u4e0d\u9700\u8981args\u53c2\u6570\u3002<\/p>\n<h2>\u8bbe\u7f6e\u672c\u5730\u670d\u52a1\u5668\u5e76\u8fdb\u884c\u67e5\u8be2\u64cd\u4f5c\u7684\u786e\u8ba4\u3002<\/h2>\n<p>\u5728\u8fdb\u884c\u53d8\u5f02\u6784\u5efa\u548c\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u542f\u52a8\u672c\u5730\u670d\u52a1\u5668\u4ee5\u786e\u8ba4\u67e5\u8be2\u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u5c06\u521b\u5efa\u7684 RootQuery \u7528 new GraphQLSchema \u8fdb\u884c\u5305\u88c5\u5e76\u5bfc\u51fa\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">module<\/span><span class=\"p\">.<\/span><span class=\"nx\">exports<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLSchema<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">query<\/span><span class=\"p\">:<\/span> <span class=\"nx\">RootQuery<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528yarn\u547d\u4ee4\u6dfb\u52a0express express-graphql\u6240\u9700\u7684\u8f6f\u4ef6\u5305\uff0c\u5e76\u8fdb\u884c\u4ee5\u4e0b\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">express<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">graphqlHTTP<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express-graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">schema<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">.\/schema\/schema<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">app<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">express<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"dl\">'<\/span><span class=\"s1\">\/graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">graphqlHTTP<\/span><span class=\"p\">({<\/span>\r\n    <span class=\"na\">graphiql<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nx\">schema<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"p\">})<\/span>\r\n<span class=\"p\">);<\/span>\r\n\r\n<span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">listen<\/span><span class=\"p\">(<\/span><span class=\"mi\">4000<\/span><span class=\"p\">,<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">Listening for requests on my awesome port 4000<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528 `node app` \u547d\u4ee4\uff0c\u53ef\u4ee5\u57284000\u7aef\u53e3\u4e0a\u542f\u52a8\u670d\u52a1\u5668\u3002\u4e3a\u4e86\u5b9e\u65f6\u53cd\u6620\u6e90\u4ee3\u7801\u7684\u4fee\u6539\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 `yarn global add nodemon` \u547d\u4ee4\u6765\u5f15\u5165 nodemon\u3002<\/p>\n<p>\u8fd0\u884cnodemon app\u6765\u542f\u52a8\u670d\u52a1\u5668\uff0c\u6253\u5f00http:\/\/localhost:4000\/graphql\uff0c\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u753b\u9762\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/40-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 8.04.42.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/41-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 8.10.45.png\" \/><\/div>\n<h1>\u4e0eMongoDB\u7684\u8fde\u63a5<\/h1>\n<p>\u4e0eDB\u5efa\u7acb\u8fde\u63a5\u5e76\u5b9e\u73b0Mutation\u64cd\u4f5c\u3002<\/p>\n<h2>MongoDB Atlas\u7684\u8bbe\u5b9a<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/45-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 21.26.37.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/46-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 21.29.32.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/47-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 21.31.25.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/48-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 21.41.01.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/49-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 21.43.06.png\" \/><\/div>\n<h2>Node.js \u7684\u914d\u7f6e<\/h2>\n<p>\u4e3a\u4e86\u4e0eGraphQL\u548cMongoDB\u8fdb\u884c\u96c6\u6210\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Node.js\u7684mongoose\u5305\u8fdb\u884c\u5b89\u88c5\uff08yarn add mongoose\uff09\u3002<br \/>\n\u5c06app.js\u6587\u4ef6\u4fee\u6539\u4e3a\u4ee5\u4e0b\u5185\u5bb9\u3002\u4f7f\u7528mongoose.connect\u8fde\u63a5\u5230MongoDB\uff0c\u4f7f\u7528mongoose.connection.once\u5728\u6210\u529f\u8fde\u63a5\u540e\u8fdb\u884c\u63a7\u5236\u53f0\u65e5\u5fd7\u786e\u8ba4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">express<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">graphqlHTTP<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express-graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">mongoose<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">mongoose<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">schema<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">.\/schema\/schema<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">app<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">express<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"nx\">mongoose<\/span><span class=\"p\">.<\/span><span class=\"nx\">connect<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"dl\">'<\/span><span class=\"s1\">mongodb+srv:\/\/dbUser:&lt;password&gt;@cluster0.gjo5x.mongodb.net\/test<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"c1\">\/\/ &lt;password&gt;\u306b\u306f\u81ea\u5206\u3067\u8a2d\u5b9a\u3057\u305f\u3082\u306e\u3092\u5165\u529b<\/span>\r\n  <span class=\"p\">{<\/span> <span class=\"na\">useNewUrlParser<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span> <span class=\"p\">}<\/span>\r\n<span class=\"p\">);<\/span>\r\n<span class=\"nx\">mongoose<\/span><span class=\"p\">.<\/span><span class=\"nx\">connection<\/span><span class=\"p\">.<\/span><span class=\"nx\">once<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">open<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">we are connected.<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">});<\/span>\r\n\r\n<span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"dl\">'<\/span><span class=\"s1\">\/graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nx\">graphqlHTTP<\/span><span class=\"p\">({<\/span>\r\n    <span class=\"na\">graphiql<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nx\">schema<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"p\">})<\/span>\r\n<span class=\"p\">);<\/span>\r\n\r\n<span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">listen<\/span><span class=\"p\">(<\/span><span class=\"mi\">4000<\/span><span class=\"p\">,<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">Listening for requests on my awesome port 4000<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<h2>\u5efa\u7acb\u6a21\u578b<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/54-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 22.03.45.png\" \/><\/div>\n<p>\u7528\u6237\u7684\u6a21\u578b\u5c06\u5982\u4e0b\u6240\u793a\u3002userSchema\u5c06\u5728\u7a0d\u540e\u7684schema.js\u6587\u4ef6\u4e2d\u52a0\u8f7d\uff0c\u6700\u540e\u8fdb\u884c\u5bfc\u51fa\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">mongoose<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">mongoose<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">MSchema<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">mongoose<\/span><span class=\"p\">.<\/span><span class=\"nx\">Schema<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">userSchema<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">MSchema<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Number<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">});<\/span>\r\n<span class=\"nx\">module<\/span><span class=\"p\">.<\/span><span class=\"nx\">exports<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">mongoose<\/span><span class=\"p\">.<\/span><span class=\"nx\">model<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">User<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"nx\">userSchema<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h2>\u4ea7\u751f\u53d8\u5f02<\/h2>\n<p>\u6211\u4eec\u5c06\u521b\u5efa\u7528\u6237(User)\u6570\u636e\u7684\u521b\u5efa(CreateUser)\u3001\u66f4\u65b0(UpdateUser)\u3001\u5220\u9664(RemoveUser)\u7684Mutation\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">graphql<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">graphql<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">User<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">..\/model\/user<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"o\">~<\/span><span class=\"nx\">\u4e2d\u7565<\/span><span class=\"o\">~<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Mutation<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLObjectType<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Mutation<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fields<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"na\">CreateUser<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">UserType<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">args<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">(<\/span><span class=\"nx\">GraphQLString<\/span><span class=\"p\">)<\/span> <span class=\"p\">},<\/span>\r\n        <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">(<\/span><span class=\"nx\">GraphQLInt<\/span><span class=\"p\">)<\/span> <span class=\"p\">},<\/span>\r\n        <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n      <span class=\"p\">},<\/span>\r\n\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"kd\">let<\/span> <span class=\"nx\">user<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">User<\/span><span class=\"p\">({<\/span>\r\n          <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">,<\/span>\r\n          <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">age<\/span><span class=\"p\">,<\/span>\r\n          <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">profession<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">});<\/span>\r\n\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">user<\/span><span class=\"p\">.<\/span><span class=\"nx\">save<\/span><span class=\"p\">();<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n\r\n    <span class=\"na\">UpdateUser<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">UserType<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">args<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">(<\/span><span class=\"nx\">GraphQLString<\/span><span class=\"p\">)<\/span> <span class=\"p\">},<\/span>\r\n        <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">(<\/span><span class=\"nx\">GraphQLString<\/span><span class=\"p\">)<\/span> <span class=\"p\">},<\/span>\r\n        <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLInt<\/span> <span class=\"p\">},<\/span>\r\n        <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">GraphQLString<\/span> <span class=\"p\">},<\/span>\r\n      <span class=\"p\">},<\/span>\r\n\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"p\">(<\/span><span class=\"nx\">updatedUser<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">findByIdAndUpdate<\/span><span class=\"p\">(<\/span>\r\n          <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">,<\/span>\r\n          <span class=\"p\">{<\/span>\r\n            <span class=\"na\">$set<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n              <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">,<\/span>\r\n              <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">age<\/span><span class=\"p\">,<\/span>\r\n              <span class=\"na\">profession<\/span><span class=\"p\">:<\/span> <span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">profession<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">},<\/span>\r\n          <span class=\"p\">},<\/span>\r\n          <span class=\"p\">{<\/span> <span class=\"na\">new<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span> <span class=\"p\">}<\/span>\r\n        <span class=\"p\">));<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n\r\n    <span class=\"na\">RemoveUser<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"nx\">UserType<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">args<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLNonNull<\/span><span class=\"p\">(<\/span><span class=\"nx\">GraphQLString<\/span><span class=\"p\">)<\/span> <span class=\"p\">},<\/span>\r\n      <span class=\"p\">},<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"nx\">parent<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"kd\">let<\/span> <span class=\"nx\">removedUser<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">findByIdAndRemove<\/span><span class=\"p\">(<\/span><span class=\"nx\">args<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">).<\/span><span class=\"nx\">exec<\/span><span class=\"p\">();<\/span>\r\n\r\n        <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"o\">!<\/span><span class=\"nx\">removedUser<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n          <span class=\"k\">throw<\/span> <span class=\"k\">new<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Error<\/span><span class=\"dl\">'<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"p\">}<\/span>\r\n\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">removedUser<\/span><span class=\"p\">;<\/span>\r\n      <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"o\">~<\/span><span class=\"nx\">\u4e2d\u7565<\/span><span class=\"o\">~<\/span>\r\n\r\n<span class=\"nx\">module<\/span><span class=\"p\">.<\/span><span class=\"nx\">exports<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">GraphQLSchema<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">query<\/span><span class=\"p\">:<\/span> <span class=\"nx\">RootQuery<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">mutation<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Mutation<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">});<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u5728resolve\u4e2d\u52a0\u8f7dUser\u6a21\u578b\uff0c\u5e76\u4f7f\u7528save\u65b9\u6cd5\u548cfindByIdAndUpdate\u65b9\u6cd5\u8fdb\u884c\u6570\u636e\u7684\u6ce8\u518c\u548c\u66f4\u65b0\u3002\u6709\u5173\u8fd9\u4e9b\u65b9\u6cd5\u7684\u8be6\u7ec6\u4f7f\u7528\u8bf4\u660e\uff0c\u8bf7\u53c2\u8003mongoose\u7684\u5b98\u65b9\u6587\u6863\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5728\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u4e2d\u9700\u6307\u5b9a\u6240\u8981\u5904\u7406\u7684\u6570\u636e\uff0c\u56e0\u6b64args\u4e2d\u7684id\u5fc5\u987b\u4e3a\u975e\u7a7a\u503c\u3002\u82e5\u8981\u4f7f\u67d0\u4e00\u5217\u53d8\u4e3a\u975e\u7a7a\u503c\uff0c\u8bf7\u4f7f\u7528GraphQLNonNull\u8fdb\u884c\u5c01\u88c5\u3002<\/p>\n<p>\u6700\u540e\u8fd8\u8981\u8bb0\u5f97\u5bfc\u51faMutation\u3002<\/p>\n<h2>\u6267\u884c\u7a81\u53d8\u3002<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/64-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 22.47.16.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8264913a08637a6b01c2\/65-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-02-25 22.50.31.png\" \/><\/div>\n<h1>\u6700\u540e<\/h1>\n<p>\u8fd9\u6b21\u7684\u670d\u52a1\u5668\u5efa\u8bbe\u5de5\u4f5c\u82b1\u8d39\u4e86\u76f8\u5f53\u957f\u7684\u65f6\u95f4\uff0c\u4f46\u4f7f\u7528AWS 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