express获取参数有三种方法：
- req.query 适合 http://localhost:3000/form?num=8888
- req.body 适合http://localhost:3000/form，然后Post一个num为tinyphp
- req.params 适合获取form后的num：http://localhost:3000/form/num
一、GET
app.js
var express = require(‘express‘);
var app = express();
app.use(express.static(‘public‘));
//获取数据
app.get(‘/form‘, function(req, res) {
var num = req.query.num;
res.send("你获取的get数据为:" + num);
});
//设置监听端口
app.listen(3000);
public/test.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<div id="box"></div>
<form action="/form" method="get">
<input type="text" name="num" value="8888">
<input type="submit" value="提交">
</form>
</body>
</html>
二、POST
解析post数据需要用到body-parser
npm body-parser --save
app.js
var express = require(‘express‘);
var app = express();
//引入body-parser
var bodyParser = require(‘body-parser‘);
app.use(express.static(‘public‘));
//需要use的
app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({
extended: true
})); // for parsing application/x-www-form-urlencoded
//获取数据
app.post(‘/form‘, function(req, res) {
var num = req.body.num;
res.send("你获取的post数据为:" + num);
});
//设置监听端口
app.listen(3000);
public/test.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<div id="box"></div>
<form action="/form" method="post">
<input type="text" name="num" value="tinyphp">
<input type="submit" value="提交">
</form>
</body>
</html>
三、获取路径
app.js
var express = require(‘express‘);
var app = express();
//获取数据
app.get(‘/form/:num‘, function(req, res) {
var num = req.params.num;
res.send("你获取到form/后的参数:" + num);
});
//设置监听端口
app.listen(3000);
时间： 2024-10-25 13:46:48