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graphql后缀文件在express中使用

  1. 安装
    npm i graphql

  2. 创建graphql后缀文件(主流编辑器都有带高亮提示了现在)
    编写内容如下

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    type itemRe {
        key:String
        value:String
    }

    type Query {
        q_test:String
        q_api_login(account:String!, password:String!):Boolean
        q_check_user(account:String!):String
        q_get_item(key:String!, account:String!):[itemRe]
    }


    type Mutation{
        m_test:String
        m_register(account:String!, password:String!):Boolean
        m_modify_password(account:String!, password:String!):Boolean

        # 输入账号密码发送邮件,当前只支持@qq.com,  @foxmail.com 的邮箱
        m_send_email(fromemail:String!, password:String!, toemail:String!,
            title:String, txt:String, html:String):Boolean

        # value 最大不超过255个字符
        m_set_item(key:String!, value:String!, account:String!):Boolean,
        m_remove_item(key:String!, account:String!):Boolean,
    }

    schema  {
        query: Query
        mutation: Mutation
    }

  3. 在express框架中使用

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    import * as express from "express";
    import * as MApi from "./api_define/apilist";
    import graphqlHTTP = require("express-graphql");
    import {buildSchema,} from "graphql";
    let path = require("path");
    let app = express();
    let fs = require("fs");
    let data = fs.readFileSync(path.resolve("src/api_define/apidef.graphql"));
    data = data.toString();
    let schema = buildSchema(data);

    let root = {
        q_test: () => "Query test ok",
        m_test: () => "Mutation test ok",

        // Query api
        q_api_login: async ({account, password}) => await MApi.api_login(account, password),
        q_check_user: async ({account}) => await MApi.check_user(account),
        q_get_item: async ({key, account}) => await MApi.api_get_item(key, account),

        // Mutation api
        m_register: async ({account, password}) => await MApi.api_register(account, password),
        m_modify_password: async ({account, password}) => await MApi.api_modify_password(account, password),
        m_send_email: async ({fromemail, password, toemail, title, txt, html}) => await MApi.api_send_email(fromemail, password, toemail, title, txt, html),
        m_set_item: async ({key, value, account}) => await MApi.api_set_item(key, value, account),
        m_remove_item: async ({key, account}) => await MApi.api_remove_item(key, account),
    };
    app.use('/g', graphqlHTTP({
        schema: schema,
        rootValue: root,
        graphiql: true, //控制显示控制台
    }));


    let server = app.listen(8877, function () {
        // @ts-ignore
        let port = server.address().port;
        console.log("管理后台，访问地址为 http://127.0.0.1:%s", port)
    });