服务端代码：
var express = require('express');
var swig = require('swig');
//1、引入multer模块
var multer = require('multer');
var fs = require('fs');
var path = require('path');
var redis = require('./modules/redis');
var app = express();
app.use(express.bodyParser());
//设置swig模板方法;
app.engine('html', swig.renderFile);
app.set('view engine', 'html');
app.set('views', __dirname + '/views');
// Using Multer for file uploads.
//2、配置multer中间件参数;
app.use(multer({ dest: './uploads/'}));
//3、设置路由参数,原理就是通过第2步中的中间件后,req.files会带上传过来的图片信息;
app.post('/form',function(req,res){
//console.log(req.files.image); // 上传的文件信息
//console.log(req.body);
//console.log(req.files);
var des_file = __dirname + "/uploads/" + req.files.image.originalFilename;
console.log(__dirname);
console.log(req.files.image.originalFilename);
console.log(des_file);
//4、图片上传进来后,被保存在内存路径中（个人理解，很重要，姑且这样理解）;
fs.readFile( req.files.image.path, function (err, data) {
console.log(data)
//5、通过fs模块读取图片保存的内存路径,并将图片读出的信息,保存到设置好的目录里;
fs.writeFile(des_file, data, function (err) {
if( err ){
console.log( err );
}else{
response = {
message:'File uploaded successfully',
filename:req.files.image.originalFilename
};
}
//console.log( response );
res.end( JSON.stringify( response ) );
});
});
});
app.post('/',function(req,res){
if(!(req.body.owner&&req.body.type&&req.body.content)){
if(req.body.type&&(["male","female"].indexOf(req.body.type) === -1)){
return res.json({code:0,msg:"类型错误"})
}
return res.json({code:0,msg:"信息不完整"})
}
redis.throw(req.body,function(result){
res.json(result);
})
});
app.get('/',function(req,res){
console.log(req.query);
if(!req.query.user){
return res.json({code:0,msg:"信息不完整"});
}
if(req.query.type && (["male","female"].indexOf(req.query.type) === -1)){
return res.json({code:0,msg:"类型错误"});
}
redis.pick(req.query,function(result){
res.json(result);
})
});
app.get('/form',function(req,res){
res.render('form');
});
//require("./test/test.js").b();
//
//
//require("./test/test.js").a();
//var cc = require("./test/test");
//cc.b();
//cc.a();
app.listen(3000);
前端form表单代码:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<!--form若是上传图片必须带上这个属性 enctype="multipart/form-data"-->
<form action="" method="post" enctype="multipart/form-data">
<input type="text" name="owner" value="123131414"/>
<input type="file" name="image"/>
<input type="submit" value="上传文件" />
</form>
</body>
</html>
最重要的一点是：
<input type="file" name="image"/>
必须加上 name="image"
必须加上 name="image"
必须加上 name="image"
重要的事情说三遍
