vue+express 构建后台管理系统

摘要：部署阿里云创建实例添加安全组允许端口使用连接服务器将项目压缩上传注表述能力有限如果有什么问题或探讨可以加如果对你有帮助劳驾给个

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1.修复mysql无法访问

1.安装vue-cli脚手架

npm install -g vue-cli

2.创建基于webpack模版的项目

vue init webpack my-express

3.安装包依赖并运行

cd my-express
npm install
npm run dev

vue项目基于iview-admin改造的

1.连接数据库

在config创建db.js

var mysql = require("mysql");
var connection = mysql.createConnection({
    host:"",
    port: 3306,
    user:"root",
    password:"",
    database:"",
    useConnectionPooling: true
});

function query(sql,data,callback){
    // connection.connect()
    // pool.getConnection(function(err,connection){
        connection.query(sql,data,function (err,rows) {
            callback(err,rows);
            // connection.release();
            // connection.end()  
        });
    // });
}

exports.query = query;

在routers路由文件下引入

var express = require("express");
var router = express.Router();
var db = require("../config/db");
const jwt = require("jsonwebtoken")
const token = require("../config/token")
var data={data:"",meta:{code:"200",message:""}}
/* GET users listing. */
router.post("/add", function(req, res, next) {
    let username = req.body.username;
    let password = req.body.password;
    db.query("SELECT username FROM users where username=(?)",[username],function(err,rows){
        console.log(err,rows)
        if(rows.length>0){
            data={data:"",meta:{code:"500",message:"用户名存在"}}
            res.send(data)
        }else{
            db.query("INSERT INTO `users` (`username`,`password`) VALUES (?,?)",[username,password],function(err,rows){
                data={data:"",meta:{code:"200",message:"注册成功"}}
                res.send(data)
            });   
        }
    });
});

2.加入token验证

安装jsonwebtoken

npm install jsonwebtoken

在config创建token.js

const crypto = require("jsonwebtoken")
const secret = "JWT-TOKEN"
const token={
    createToken:function(obj,timeout){
        // Token 数据
        let payload = {
            name: obj.username,
            admin: true
        };
        // 密钥
        
        // 签发 Token
        let tokens = crypto.sign(payload, secret, { expiresIn: 3600})
        return  tokens;
    },
    decodeToken:function(tokens){
        console.log(tokens)
        let res = false;
        crypto.verify(tokens, secret , function(err,decoded) {
            if(err){
                res = {"flag":false,"decoded":decoded}
            }else{
                res = {"flag":true,"decoded":decoded}
            }
            })
        return res;
    },
    checkToken:function(token){
        var resDecode=this.decodeToken(token);
        if(!resDecode){
            return false;
        }
        //是否过期
        var expState=(parseInt(Date.now()/1000)-parseInt(resDecode.payload.created))>parseInt(resDecode.payload.exp)?false:true;
        if(resDecode.signature===resDecode.checkSignature&&expState){
            return true;
        }
        return false;
    }
};
module.exports=exports=token;

在app.js验证token是否过期，过去返回401

app.all("*", function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "PUT, GET, POST, DELETE, OPTIONS");
    res.header("Access-Control-Allow-Headers", "Content-Type, access_token, X-Requested-With")
    // res.header("Content-Type", "application/json;charset=utf-8");
    console.log(req.originalUrl,"11111")
    if(rouetpass.indexOf(req.originalUrl) > -1 || req.originalUrl.split("/").indexOf("static") > -1){

        next()
    }else{
        if (req.method != "OPTIONS"){
            var accesstoken = req.headers["access_token"];
            let datatoken = token.decodeToken(accesstoken)
            // console.log(data)
            if(datatoken.flag){
                next()
            }else{
                data.meta.code=401;
                res.send(data) 
            }
        }else{
            next()
        }
    }
});

1.将vue项目打包后放在express项目public文件夹下，通http://localhost:3000即可以访问。

2.部署阿里云

创建实例

添加安全组允许3000端口

使用putty连接linux服务器,将express项目压缩上传