微信小程序访问mysql数据库流程详解

const mysql = require("mysql2/promise");
exports.main = async (event, context) => {
    try {
        const connection = await mysql.createConnection({
            host: '你的数据库的公网ip',
            user: '数据库的用户名',
            password: '数据库的密码',
            port: 3306,
            database: '数据库名',
        });
        console.log('已连接')
        const [rows, fields] = await connection.execute('SELECT * FROM `user`;');
                // 这里可以对返回数据做加工
        return rows;
    } catch(err) {
        console.log('错误连接', err);
        return err;
    }
};

{
  "name": "app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {},
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@cloudbase/node-sdk": "latest",
    "mysql2":"latest"
  }
}

export default {
  async onPageLoad(query) {
    //console.log('---------> LifeCycle onPageLoad', query)
    const result = await app.cloud.callConnector({
        name: 'ljmysql_xi2ad3x',
        methodName: 'ljmysql',
        params: {}, // 方法入参
    });
    console.log(result)
    $page.dataset.state.list = result
  },
  onPageShow() {
    //console.log('---------> LifeCycle onPageShow')
  },
  onPageReady() {
    //console.log('---------> LifeCycle onPageReady')
  },
  onPageHide() {
    //console.log('---------> LifeCycle onPageHide')
  },
  onPageUnload() {
    //console.log('---------> LifeCycle onPageUnload')
  },
}