文件上传
以下我们创建一个用于上传文件的表单，使用 POST 方法，表单 enctype 属性设置为 multipart/form-data。
index.htm 文件代码修改如下：
<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="" />
<br />
<input type="submit" value="上传文件" />
</form>
</body>
</html>
server.js 文件代码修改如下:
var express = require('express');
var app = express();
var fs = require("fs");
var bodyParser = require('body-parser');
var multer = require('multer');
app.use(express.static('public'));
app.use(bodyParser.urlencoded({ extended: false }));
app.use(multer({ dest: '/tmp/'}).array('image'));
app.get('/index.htm', function (req, res) {
res.sendFile( __dirname + "/" + "index.htm" );
})
app.post('/file_upload', function (req, res) {
console.log(req.files[]); // 上传的文件信息
var des_file = __dirname + "/" + req.files[].originalname;
fs.readFile( req.files[].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[].originalname
};
}
console.log( response );
res.end( JSON.stringify( response ) );
});
});
})
var server = app.listen(, 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)
})
执行以上代码：
$ node server.js
应用实例，访问地址为 http://0.0.0.0:8081
浏览器访问 http://127.0.0.1:8081/index.htm