nodejs 接口传输数据

最近项目需要接口传输，于是乎找了那个选择哪个语言，选择node,而且是https模式！

找了好久才解决跨域问题！废话不多说，直接上代码

```python

let mysql = require('mysql');

let express = require('express');

let app = express();

let https = require("https");

let fs = require("fs");

// Configuare https

const httpsOption = {

    key : fs.readFileSync("./https/3_jdong.xuexuebang.cn.key"),//https证书key

    cert: fs.readFileSync("./https/2_jdong.xuexuebang.cn.crt")//https证书crt

}

//链接数据库

let connection = mysql.createConnection({

    host    : '127.0.0.1',

    port    : '3306',

    database : 'sz',

    user    : 'soubei',

    password : 'soubei',

})

connection.connect();

//解决跨域问题

app.all("*",function (req, res, next) { //允许所有请求方式

    res.header("Access-Control-Allow-Origin","*");//所有

    res.header("Access-Control-Allow-Headers","content-type")//post

    next()

})

app.get('/userlist',function(req,res){

    shop_name = req.query.shop_name;

    connection.query('SELECT * from `order` where orderStatus="暂停" ',function(error,results,fileds){

        if(error) throw error;

        res.header("Access-Control-Allow-Origin", "*");

        res.header('Access-Control-Allow-Headers', 'Content-type');

        res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS,PATCH");

        res.header('Access-Control-Max-Age',1728000);//预请求缓存20天

        res.writeHead(200,{"Content-Type":"text/json;chartset=utf-8"})

        data = []

        // console.log('SELECT skuId from `cmf_order_sku` where shop_name="'+shop_name+'" group by skuId')

          connection.query('SELECT skuId from `cmf_order_sku` where shop_name="'+shop_name+'" group by skuId',function(error,result,fileds){

            if (result !=''){

              res.end(JSON.stringify(result))

            }

            if (error == null){

                res.end(JSON.stringify('请求失败'))

            }

          })

    })

})

https.createServer(httpsOption, app).listen(8080,function(){

    // let host = server.address().address;

    // let port = server.address().port;

    console.log("应用实例，运行在http://%s:%s")

});

```