node的express参数获取

1.express中的不定向路由参数的获取

如:

app.get('/profile/:id', function(req, res) {
    var id=req.params.id
    res.send(id)
});

要用req.params属性获取

2.express中get传参数获取

如:

代码:

app.get('/', function(req, res) {
   var user = req.query.user
    res.send(user)
});

要用req.query获取

3.express中post参数的获取

如:

<form action="http://127.0.0.1:8081/process_post" method="POST">
    First Name: <input type="text" name="first_name">  <br>
    Last Name: <input type="text" name="last_name">
    <input type="submit" value="Submit">
</form>

　　

var express = require('express');
var app = express();
var bodyParser = require('body-parser');
// 创建 application/x-www-form-urlencoded 编码解析
var urlencodedParser = bodyParser.urlencoded({ extended: false })
app.post('/process_post', urlencodedParser, function (req, res) {
   // 输出 JSON 格式
   response = {
       first_name:req.body.first_name,
       last_name:req.body.last_name
   };
   console.log(response);
   res.end(JSON.stringify(response));
})

　

要用到body-parser中间件,获取用req.body加变量名