服务器要用get方式

app.js

const express = require('express')

const app = express();


app.listen(10110);
console.log("tiger server is listening on " + 10110);
app.use((req, res, next) => {
//判断路径
  if(req.path !== '/' && !req.path.includes('.')){
    res.set({
      'Access-Control-Allow-Credentials': true, //允许后端发送cookie
      'Access-Control-Allow-Origin': req.headers.origin || '*', //任意域名都可以访问,或者基于我请求头里面的域
      'Access-Control-Allow-Headers': 'X-Requested-With,Content-Type', //设置请求头格式和类型
      'Access-Control-Allow-Methods': 'PUT,POST,GET,DELETE,OPTIONS',//允许支持的请求方式
      'Content-Type': 'application/json; charset=utf-8'//默认与允许的文本格式json和编码格式
    })
  }
  req.method === 'OPTIONS' ? res.status(204).end() : next()
})

const verifyToken = (req, res, next) => {
  next()
}

function send(res, ret) {
  var str = JSON.stringify(ret);
  res.send(str);
}

app.get('/spin', verifyToken, function (req, res) {
  let info = {
    bet:0,
    result: Math.floor( Math.random() * 100000)
  }
  console.log("req:", req.query);

  send(res, { err: 0, errmsg: info });

});

客户端用get方式，如果参数因为用json发送方便就处理一下

        let path = '/spin'
        let extraUrl = 'http://127.0.0.1:10110'

        let data = {
            amout: this.count,
            idd: Math.floor(Math.random() * 100000)
        }

        let xhr = new XMLHttpRequest();
        xhr.timeout = 5000;
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {
                var response = xhr.responseText;
                console.log(response);
            }
        };


        var sendpath = path;
        var sendtext = "?";
        for (var k in data) {
            if (sendtext != "?") {
                sendtext += "&";
            }
            sendtext += k + "=" + data[k];
        }
        var requestURL = extraUrl + sendpath + encodeURI(sendtext);
        console.log("RequestURL:" + requestURL);
        xhr.open("GET", requestURL, true);
        xhr.send();

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