{"id":47903,"date":"2023-08-08T12:37:11","date_gmt":"2023-10-04T08:57:02","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8%e7%ae%80%e5%8d%95%e7%9a%84graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%bf%9b%e8%a1%8ccrud%e6%93%8d%e4%bd%9c%ef%bc%88express-js%ef%bc%8cobjection-js%ef%bc%8cmysql%ef%bc%8cdocker%ef%bc%89\/"},"modified":"2024-04-30T17:33:44","modified_gmt":"2024-04-30T09:33:44","slug":"%e4%bd%bf%e7%94%a8%e7%ae%80%e5%8d%95%e7%9a%84graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%bf%9b%e8%a1%8ccrud%e6%93%8d%e4%bd%9c%ef%bc%88express-js%ef%bc%8cobjection-js%ef%bc%8cmysql%ef%bc%8cdocker%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8%e7%ae%80%e5%8d%95%e7%9a%84graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%bf%9b%e8%a1%8ccrud%e6%93%8d%e4%bd%9c%ef%bc%88express-js%ef%bc%8cobjection-js%ef%bc%8cmysql%ef%bc%8cdocker%ef%bc%89\/","title":{"rendered":"\u4f7f\u7528\u7b80\u5355\u7684GraphQL\u670d\u52a1\u5668\u8fdb\u884cCRUD\u64cd\u4f5c\uff08Express.js\uff0cObjection.js\uff0cMySQL\uff0cDocker\uff09"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u5f53\u6211\u5f00\u59cb\u5b66\u4e60GraphQL\u65f6\uff0c\u6211\u611f\u5230\u4e86\u4e00\u4e1d\u96be\u5ea6?\u3002\u4ece\u201c\u5982\u679c\u6211\u518d\u6b21\u4ece\u5934\u5f00\u59cb\u5b66\u4e60GraphQL\u7684\u8bdd\uff0c\u5982\u679c\u6709\u8fd9\u6837\u4e00\u7bc7\u6587\u7ae0\u5c31\u597d\u4e86\u201d\u8fd9\u4e2a\u89d2\u5ea6\u51fa\u53d1\uff0c\u6211\u521b\u5efa\u4e86\u4e00\u4e2a\u7b80\u5355\u7684GraphQL\u5e94\u7528\uff0c\u4ee3\u7801\u91cf\u5f88\u5c11\uff0c\u4f46\u529f\u80fd\u6b63\u5e38\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\u8fd9\u662f\u4e00\u4e2a\u53ef\u4ee5\u572820\u5206\u949f\u5185\u5b8c\u6210\u7684\u5b9e\u8df5\uff0c\u4f46\u662f\u5982\u679c\u60a8\u5f88\u5fd9\u7684\u8bdd\uff0c\u60a8\u53ef\u4ee5\u4ec5\u4ec5\u770b\u4e00\u4e0b&#8221;\u6dfb\u52a0\u6587\u4ef6 -&gt; \u670d\u52a1\u5668&#8221;\u8fd9\u90e8\u5206?<\/p>\n<p>\u5982\u679c\u5728\u4ea7\u54c1\u4e2d\u4f7f\u7528GraphQL\uff0c\u6211\u8ba4\u4e3a\u6709\u5f88\u591a\u9700\u8981\u8003\u8651\u7684\u4e8b\u60c5\uff0c\u6bd4\u5982\u8bbe\u8ba1\u66f4\u5177\u53ef\u7ef4\u62a4\u6027\u7684\u76ee\u5f55\u7ed3\u6784\uff0c\u8003\u8651\u5bf9N+1\u8fdb\u884c\u4f18\u5316\u7b49\u7b49\u3002\u4f46\u662f\u8fd9\u6b21\u6211\u4eec\u4e0d\u53bb\u78b0\u8fd9\u4e9b\u3002<\/p>\n<h4>\u5f00\u53d1\u73af\u5883\u548c\u6240\u7528\u7684\u6280\u672f<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">OS: macOS Catalina 10.15.4<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b5\u30fc\u30d0\u30fc: Express.js<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ORM: Objection.js\uff08\u5185\u90e8\u3067Knex.js\u3092\u5229\u7528\u3057\u3066\u308b\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">DB: MySQL8\u7cfb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c4\u30fc\u30eb<\/ul>\n<\/li>\n<\/ul>\n<p>node: 16.8.0<br \/>\nyarn: 1.22.17<br \/>\ndocker: 20.10.7<br \/>\ndocker-compose: 1.29.2<\/p>\n<h4>\u76ee\u5f55\u7ed3\u6784<\/h4>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 graphql\r\n\u2502   \u2514\u2500\u2500 user.gql\r\n\u251c\u2500\u2500 migrations\r\n\u2502   \u2514\u2500\u2500 20211225000000_users.js\r\n\u251c\u2500\u2500 models\r\n\u2502   \u2514\u2500\u2500 User.js\r\n\u251c\u2500\u2500 seeds\r\n\u2502   \u2514\u2500\u2500 users.js\r\n\u251c\u2500\u2500 docker-compose.yml\r\n\u251c\u2500\u2500 knexfile.js\r\n\u251c\u2500\u2500 package.json\r\n\u251c\u2500\u2500 server.js\r\n\u2514\u2500\u2500 yarn.lock\r\n<\/code><\/pre>\n<h1>\u4eb2\u8eab\u4f53\u9a8c<\/h1>\n<h3>\u5efa\u7acb\u73af\u5883<\/h3>\n<p>\u5728\u521b\u5efapackage.json\u6587\u4ef6\u4e4b\u540e\uff0c\u6267\u884cyarn install\u5b89\u88c5\u4f9d\u8d56\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"nl\">\"version\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"1.0.0\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"dependencies\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"express\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^4.17.1\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"express-graphql\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^0.12.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"graphql\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^15.7.2\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"knex\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^0.95.14\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"mysql2\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^2.3.3\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"objection\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^3.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"nodemon\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"^2.0.15\"<\/span>\r\n  <span class=\"p\">},<\/span>\r\n  <span class=\"nl\">\"scripts\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"dev\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"nodemon server.js\"<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u5728\u521b\u5efadocker-compose.yml\u6587\u4ef6\u540e\uff0c\u4f7f\u7528docker-compose up\u547d\u4ee4\u6765\u542f\u52a8mysql\u670d\u52a1\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code>version: '3.8'\r\nservices:\r\n  my-db:\r\n    image: mysql:8\r\n    environment:\r\n      MYSQL_ROOT_PASSWORD: password\r\n    ports:\r\n      - '3306:3306'\r\n    command: --default-authentication-plugin=mysql_native_password\r\n    volumes:\r\n      - .\/mysql:\/var\/lib\/mysql\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u81ea\u5df1\u559c\u6b22\u7684\u65b9\u5f0f\uff0c\u5728\u6211\u7684 my-db \u5bb9\u5668\u5185\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a dev_db \u7684\u6570\u636e\u5e93\u3002<\/p>\n<details>\u5728\u4f7f\u7528docker-compose\u6267\u884cmy-db\u5bb9\u5668\u5e76\u8fdb\u5165\u5bb9\u5668\u7684bash\u5ba2\u6237\u7aef\u540e\uff0c\u767b\u5f55MySQL\u5e76\u6267\u884cSQL\u8bed\u53e5\u521b\u5efa\u6570\u636e\u5e93\u3002docker-compose exec my-db bash<br \/>\nroot@1234567890:\/#<br \/>\nroot@1234567890:\/# mysql -u root -p<br \/>\n\u8f93\u5165\u5bc6\u7801\uff1a<br \/>\n\u301c \u8f93\u5165docker-compose.yml\u4e2d\u8bbe\u7f6e\u7684MYSQL_ROOT_PASSWORD\u7684\u503c \u301c<\/p>\n<p>\u6b22\u8fce\u6765\u5230MySQL\u76d1\u89c6\u5668\u3002\u8f93\u5165\u547d\u4ee4\u4ee5;\u6216\\g\u7ed3\u5c3e\u3002<br \/>\n\u301c \u7701\u7565 \u301c<br \/>\nmysql&gt;<br \/>\nmysql&gt; CREATE DATABASE dev_db;<br \/>\n\u67e5\u8be2\u5df2\u53d7\u5f71\u54cd\u7684\u884c\u6570\uff1a1\uff08\u8017\u65f60.05\u79d2\uff09<\/p>\n<p>mysql&gt; show databases;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+<br \/>\n| Database |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+<br \/>\n| dev_db |<br \/>\n| information_schema |<br \/>\n| mysql |<br \/>\n| performance_schema |<br \/>\n| sys |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+<br \/>\n\u7ed3\u679c\u96c6\u4e2d\u76845\u884c\uff08\u8017\u65f60.01\u79d2\uff09<\/p>\n<p>mysql&gt; exit<br \/>\n\u518d\u89c1<br \/>\nroot@123456789:\/# exit<\/p>\n<\/details>\n<h3>\u4f7f\u7528knex\u521b\u5efa\u8868\u683c\u548c\u865a\u62df\u6570\u636e<\/h3>\n<p>\u6dfb\u52a0 knexfile.js \u6587\u4ef6\uff0c\u5e76\u8bb0\u5f55\u4e0b\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4fe1\u606f\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=\"p\">{<\/span>\r\n  <span class=\"na\">development<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"na\">client<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">mysql2<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"na\">connection<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">database<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">dev_db<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">user<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">root<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">password<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">password<\/span><span class=\"dl\">\"<\/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<\/code><\/pre>\n<p>\u8fd0\u884cyarn knex migrate:make users\u547d\u4ee4\u4f1a\u751f\u6210migrations\/\u3007\u3007_users.js\u6587\u4ef6\u3002<\/p>\n<p>\u4fee\u6539\u751f\u6210\u7684\u8fc1\u79fb\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">exports<\/span><span class=\"p\">.<\/span><span class=\"nx\">up<\/span> <span class=\"o\">=<\/span> <span class=\"kd\">function<\/span><span class=\"p\">(<\/span><span class=\"nx\">knex<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">knex<\/span><span class=\"p\">.<\/span><span class=\"nx\">schema<\/span><span class=\"p\">.<\/span><span class=\"nx\">createTable<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">users<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"nx\">t<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">t<\/span><span class=\"p\">.<\/span><span class=\"nx\">increments<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">id<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"nx\">t<\/span><span class=\"p\">.<\/span><span class=\"nx\">string<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">name<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"nx\">t<\/span><span class=\"p\">.<\/span><span class=\"nx\">integer<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">age<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"p\">})<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"nx\">exports<\/span><span class=\"p\">.<\/span><span class=\"nx\">down<\/span> <span class=\"o\">=<\/span> <span class=\"kd\">function<\/span><span class=\"p\">(<\/span><span class=\"nx\">knex<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">knex<\/span><span class=\"p\">.<\/span><span class=\"nx\">schema<\/span><span class=\"p\">.<\/span><span class=\"nx\">dropTable<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">users<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">};<\/span>\r\n<\/code><\/pre>\n<p>\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u4ee5\u5e94\u7528\u6700\u65b0\u7684 yarn knex \u8fc1\u79fb\uff1a<br \/>\nyarn knex migrate:latest<\/p>\n<p>\u4f7f\u7528yarn knex seed:make users\u6765\u521b\u5efa\u79cd\u5b50\u6587\u4ef6\u3002<\/p>\n<p>\u4fee\u6539\u751f\u6210\u7684\u79cd\u5b50\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">exports<\/span><span class=\"p\">.<\/span><span class=\"nx\">seed<\/span> <span class=\"o\">=<\/span> <span class=\"kd\">function<\/span><span class=\"p\">(<\/span><span class=\"nx\">knex<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ Deletes ALL existing entries<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">knex<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">users<\/span><span class=\"dl\">'<\/span><span class=\"p\">).<\/span><span class=\"nx\">del<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"p\">.<\/span><span class=\"nx\">then<\/span><span class=\"p\">(<\/span><span class=\"kd\">function<\/span> <span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"c1\">\/\/ Inserts seed entries<\/span>\r\n      <span class=\"k\">return<\/span> <span class=\"nx\">knex<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">users<\/span><span class=\"dl\">'<\/span><span class=\"p\">).<\/span><span class=\"nx\">insert<\/span><span class=\"p\">([<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Catherine<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">4<\/span><span class=\"p\">},<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Mike<\/span><span class=\"dl\">'<\/span>     <span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">8<\/span><span class=\"p\">},<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">3<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Gonzales<\/span><span class=\"dl\">'<\/span> <span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">16<\/span><span class=\"p\">},<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Nancy<\/span><span class=\"dl\">'<\/span>    <span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">32<\/span><span class=\"p\">},<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"na\">id<\/span><span class=\"p\">:<\/span> <span class=\"mi\">5<\/span><span class=\"p\">,<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">Daniel<\/span><span class=\"dl\">'<\/span>   <span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">64<\/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<\/code><\/pre>\n<p>\u4f7f\u7528yarn knex seed:run\u547d\u4ee4\u8fd0\u884cseed\u3002<\/p>\n<h3>\u6dfb\u52a0\u6587\u4ef6<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b5\u30fc\u30d0\u30fc: server.js<\/ul>\n<\/li>\n<\/ul>\n<p>\u53c2\u8003\u30b5\u30a4\u30c8: express-graphql<\/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=\"s2\">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=\"s2\">express-graphql<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">buildSchema<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">graphql<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">fs<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">fs<\/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\">buildSchema<\/span><span class=\"p\">(<\/span><span class=\"nx\">fs<\/span><span class=\"p\">.<\/span><span class=\"nx\">readFileSync<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">.\/graphql\/user.gql<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">utf8<\/span><span class=\"dl\">'<\/span><span class=\"p\">));<\/span>\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\">.\/models\/User<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">readUsers<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">users<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">query<\/span><span class=\"p\">().<\/span><span class=\"nx\">select<\/span><span class=\"p\">();<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">users<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">createUser<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async<\/span> <span class=\"p\">({<\/span><span class=\"nx\">name<\/span><span class=\"p\">,<\/span> <span class=\"nx\">age<\/span><span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">user<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">query<\/span><span class=\"p\">().<\/span><span class=\"nx\">insert<\/span><span class=\"p\">({<\/span><span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"nx\">name<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"nx\">age<\/span><span class=\"p\">});<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">user<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">updateUser<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async<\/span> <span class=\"p\">({<\/span><span class=\"nx\">id<\/span><span class=\"p\">,<\/span> <span class=\"nx\">name<\/span><span class=\"p\">,<\/span> <span class=\"nx\">age<\/span><span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">await<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">query<\/span><span class=\"p\">().<\/span><span class=\"nx\">findById<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">).<\/span><span class=\"nx\">update<\/span><span class=\"p\">({<\/span><span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"nx\">name<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"nx\">age<\/span><span class=\"p\">});<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">query<\/span><span class=\"p\">().<\/span><span class=\"nx\">findById<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">deleteUser<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async<\/span> <span class=\"p\">({<\/span><span class=\"nx\">id<\/span><span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">await<\/span> <span class=\"nx\">User<\/span><span class=\"p\">.<\/span><span class=\"nx\">query<\/span><span class=\"p\">().<\/span><span class=\"nx\">findById<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">).<\/span><span class=\"k\">delete<\/span><span class=\"p\">();<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">root<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"na\">readUsers<\/span><span class=\"p\">:<\/span> <span class=\"nx\">readUsers<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">createUser<\/span><span class=\"p\">:<\/span> <span class=\"nx\">createUser<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">updateUser<\/span><span class=\"p\">:<\/span> <span class=\"nx\">updateUser<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">deleteUser<\/span><span class=\"p\">:<\/span> <span class=\"nx\">deleteUser<\/span><span class=\"p\">,<\/span>\r\n<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<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=\"s2\">\/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\">schema<\/span><span class=\"p\">:<\/span> <span class=\"nx\">schema<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"na\">rootValue<\/span><span class=\"p\">:<\/span> <span class=\"nx\">root<\/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=\"p\">})<\/span>\r\n<span class=\"p\">);<\/span>\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>\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=\"s2\">Running a GraphQL API server at localhost:4000\/graphql<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">);<\/span>\r\n\r\n<\/code><\/pre>\n<ul class=\"post-ul\">GraphQL\u306e\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb: graphql\/user.gql<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Query<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">readUsers<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"n\">User<\/span><span class=\"p\">]<\/span>\r\n<span class=\"p\">},<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">Mutation<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!,<\/span> <span class=\"n\">age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">):<\/span> <span class=\"n\">User<\/span>\r\n  <span class=\"n\">updateUser<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span> <span class=\"n\">age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">):<\/span> <span class=\"n\">User<\/span>\r\n  <span class=\"n\">deleteUser<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!):<\/span> <span class=\"n\">User<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">User<\/span><span class=\"p\">{<\/span>\r\n  <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span>\r\n  <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n  <span class=\"n\">age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<ul class=\"post-ul\">Objection.js\u306emodel\u30d5\u30a1\u30a4\u30eb: models\/User.js<\/ul>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Model<\/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\">objection<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">knex<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">knex<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">KnexConfig<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">..\/knexfile<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nx\">Model<\/span><span class=\"p\">.<\/span><span class=\"nx\">knex<\/span><span class=\"p\">(<\/span><span class=\"nx\">knex<\/span><span class=\"p\">(<\/span><span class=\"nx\">KnexConfig<\/span><span class=\"p\">.<\/span><span class=\"nx\">development<\/span><span class=\"p\">));<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nx\">User<\/span> <span class=\"kd\">extends<\/span> <span class=\"nx\">Model<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">static<\/span> <span class=\"kd\">get<\/span> <span class=\"nx\">tableName<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">users<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/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=\"nx\">User<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">yarn dev\u30b3\u30de\u30f3\u30c9\u3067\u8d77\u52d5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">http:\/\/localhost:4000\/graphql \u306b\u30a2\u30af\u30bb\u30b9<\/ul>\n<h3>\u5728GraphiQL\u7f51\u7ad9\u4e0a\u8bd5\u7740\u83b7\u53d6\u6570\u636e\u3002<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d81df913a08637a6ae458\/38-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-12-22 5.47.48.png\" \/><\/div>\n<pre class=\"post-pre\"><code><span class=\"k\">query<\/span> <span class=\"n\">readUsers<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">readUsers<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">name<\/span>\r\n    <span class=\"n\">age<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">mutation<\/span> <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span><span class=\"nv\">$name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!,<\/span> <span class=\"nv\">$age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">createUser<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$name<\/span><span class=\"p\">,<\/span> <span class=\"n\">age<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$age<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"p\">...<\/span> <span class=\"n\">userFields<\/span> \r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">fragment<\/span> <span class=\"n\">userFields<\/span> <span class=\"k\">on<\/span> <span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">name<\/span>\r\n    <span class=\"n\">age<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\"># \u4ee5\u4e0b\u306fQUERY VARIABLES\u306b\u5165\u529b<\/span>\r\n<span class=\"p\">{<\/span>\r\n <span class=\"err\">\"<\/span><span class=\"n\">name<\/span><span class=\"err\">\":<\/span> <span class=\"err\">\"<\/span><span class=\"n\">Johnny<\/span><span class=\"err\">\"<\/span><span class=\"p\">,<\/span>\r\n <span class=\"err\">\"<\/span><span class=\"n\">age<\/span><span class=\"err\">\":<\/span> <span class=\"err\">1<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">mutation<\/span> <span class=\"n\">updateUser<\/span><span class=\"p\">(<\/span><span class=\"nv\">$id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!,<\/span> <span class=\"nv\">$name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!,<\/span> <span class=\"nv\">$age<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">updateUser<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$id<\/span><span class=\"p\">,<\/span> <span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$name<\/span><span class=\"p\">,<\/span> <span class=\"n\">age<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$age<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"p\">...<\/span> <span class=\"n\">userFields<\/span> \r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">fragment<\/span> <span class=\"n\">userFields<\/span> <span class=\"k\">on<\/span> <span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span>\r\n    <span class=\"n\">name<\/span>\r\n    <span class=\"n\">age<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\"># \u4ee5\u4e0b\u306fQUERY VARIABLES\u306b\u5165\u529b<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"err\">\"<\/span><span class=\"n\">id<\/span><span class=\"err\">\":<\/span> <span class=\"err\">3<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"err\">\"<\/span><span class=\"n\">name<\/span><span class=\"err\">\":<\/span> <span class=\"err\">\"<\/span><span class=\"n\">Akira<\/span><span class=\"err\">\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"err\">\"<\/span><span class=\"n\">age<\/span><span class=\"err\">\":<\/span> <span class=\"err\">2<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">mutation<\/span> <span class=\"n\">deleteUser<\/span><span class=\"p\">(<\/span><span class=\"nv\">$id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Int<\/span><span class=\"p\">!)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">deleteUser<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nv\">$id<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"p\">...<\/span> <span class=\"n\">userFields<\/span> \r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">fragment<\/span> <span class=\"n\">userFields<\/span> <span class=\"k\">on<\/span> <span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n <span class=\"n\">name<\/span>\r\n <span class=\"n\">age<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\"># \u4ee5\u4e0b\u306fQUERY VARIABLES\u306b\u5165\u529b<\/span>\r\n<span class=\"p\">{<\/span>\r\n <span class=\"err\">\"<\/span><span class=\"n\">id<\/span><span class=\"err\">\":<\/span> <span class=\"err\">5<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u6700\u540e<\/h1>\n<p>\u5e0c\u671b\u8fd9\u4e2a\u7b80\u5355\u7684\u529f\u80fd\u80fd\u6210\u4e3a\u4f60\u63a5\u89e6GraphQL\u7684\u5951\u673a\u3002\u975e\u5e38\u611f\u8c22\u4f60\u9605\u8bfb\u5230\u6700\u540e\uff01<\/p>\n<p>\u5982\u679c\u53ef\u4ee5\u7684\u8bdd\uff0c\u8bf7\u770b\u770b\u6211\u4eec\u516c\u53f8\u5723\u8bde\u8282\u65e5\u5386\u7684\u5176\u4ed6\u6587\u7ae0\u5427?\u200d\u2642\ufe0f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5f53\u6211\u5f00\u59cb\u5b66\u4e60GraphQL\u65f6\uff0c\u6211\u611f\u5230\u4e86\u4e00\u4e1d\u96be\u5ea6?\u3002\u4ece\u201c\u5982\u679c\u6211\u518d\u6b21\u4ece\u5934\u5f00\u59cb\u5b66\u4e60GraphQL\u7684\u8bdd\uff0c\u5982\u679c\u6709\u8fd9 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47903","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4f7f\u7528\u7b80\u5355\u7684GraphQL\u670d\u52a1\u5668\u8fdb\u884cCRUD\u64cd\u4f5c\uff08Express.js\uff0cObjection.js\uff0cMySQL\uff0cDocker\uff09 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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