安装 Express 并将其保存到依赖列表中:
$ cnpm install express --save
body-parser - node.js 中间件,用于处理 JSON, Raw, Text 和 URL 编码的数据。
$ cnpm install body-parser --save
node后台代码 node.js
var express = require('express');
var bodyParser = require('body-parser');
var app = express();
app.all('*', function (req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By", ' 3.2.1')
//这段仅仅为了方便返回json而已
res.header("Content-Type", "application/json;charset=utf-8");
if (req.method == 'OPTIONS') {
//让options请求快速返回
res.sendStatus(200);
} else {
next();
}
});
// 创建 application/x-www-form-urlencoded 编码解析
app.use(bodyParser.urlencoded({ extended: false }));
app.post('/', function (req, res) {
var getObj = req.body;
console.log(getObj);
res.send(JSON.stringify(getObj));
})
app.get('/index', function (req, res) {
var getObj = req.query;
console.log(getObj);
res.send(JSON.stringify(getObj));
})
var server = app.listen(8081, function () {
var host = server.address().address;
var port = server.address().port;
console.log("应用实例,访问地址为 http://%s:%s", host, port)
})
启动后台 node node.js
前台发送请求:
POST请求
$.ajax({
type: 'post',
dataType: 'json',
url: 'http://localhost:8081',
data: {
name: 'zhanghao',
gongzi: '20000'
},
success: function (data) {
console.log(data);
},
error: function (data) {
console.log(data);
}
})
GET请求
$.ajax({
type: 'get',
dataType: 'json',
url: 'http://localhost:8081/index',
data: {
name: 'zhanghao',
gongzi: '20000'
},
success: function (data) {
console.log(data);
},
error: function (data) {
console.log(data);
}
})