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案例代码github
get
文件目录.png
<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Page Title</title>
</head>
<body>
<form action="http://127.0.0.1:8081/process_get" method="GET">
First Name:<input type="text" name="first_name"><br/>
Last Name:<input type="text" name="last_name">
<input type="submit" value="submit">
</form>
</body>
</html>
// server.js
var express = require('express')
var app = express()
app.get('/index.html',function(req,res){
res.sendFile(__dirname + '/' + 'index.html');
})
app.get('/process_get',function(req,res){
var response = {
"first_name":req.query.first_name,
"last_name":req.query.last_name
}
console.log(response)
res.end(JSON.stringify(response))
})
var server = app.listen(8081,function(){
console.log(server.address())
})
node server.js
post
文件目录.png
<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Page Title</title>
</head>
<body>
<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>
</body>
</html>
// server.js
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.get('/index.html', function (req, res) {
res.sendFile( __dirname + "/" + "index.html" );
})
app.post('/process_post', urlencodedParser, function (req, res) {
// 输出 JSON 格式
var response = {
"first_name":req.body.first_name,
"last_name":req.body.last_name
};
console.log(response);
res.end(JSON.stringify(response));
})
var server = app.listen(8081,function(){
console.log(server.address())
})
node server.js
效果图.gif
upload
<!-- index.html -->
<html>
<head>
<title>文件上传表单</title>
</head>
<body>
<h3>文件上传：</h3>
选择一个文件上传: <br />
<form action="/file_upload" method="post" enctype="multipart/form-data">
<input type="file" name="image" size="50" />
<br />
<input type="submit" value="上传文件" />
</form>
</body>
</html>
// server.js
// 访问 http://127.0.0.1:8081/index.htm
var express = require('express');
var app = express();
var fs = require("fs");
var bodyParser = require('body-parser');
var multer = require('multer');
app.use('/public', express.static('public'));
app.use(bodyParser.urlencoded({
extended: false
}));
app.use(multer({
dest: '/tmp/'
}).array('image'));
app.get('/index.html', function (req, res) {
res.sendFile(__dirname + "/" + "index.html");
})
app.post('/file_upload', function (req, res) {
console.log(req.files[0]); // 上传的文件信息
var des_file = __dirname + "/" + req.files[0].originalname;
fs.readFile(req.files[0].path, function (err, data) {
fs.writeFile(des_file, data, function (err) {
if (err) {
console.log(err);
} else {
response = {
message: 'File uploaded successfully',
filename: req.files[0].originalname
};
}
console.log(response);
res.end(JSON.stringify(response));
});
});
})
var server = app.listen(8081, function () {
console.log(server.address())
})
cookie
// cookie.js
/* 利用中间件向Node.js服务器发送cookie信息
执行node express.js
访问http://127.0.0.1:8081查看终端信息输出
*/
var express = require('express')
/* cookie-parser
cnpm i cookie-parser --save
是一个解析Cookie的工具，通过req.cookies可以取到传过来的cookie，并将其转换为对象
*/
var cookieParser = require('cookie-parser')
var util = require('util')
var app = express()
app.use(cookieParser())
app.get('/',function(req,res){
console.log("Cookies:" + util.inspect(req.cookies))
})
app.listen(8081)
node cookie.js
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