nodejs Express3.2 使用表单上传文件的问题,求解
发布于 11 年前 作者 manbuzhiwu 6225 次浏览 最后一次编辑是 8 年前

###文件App.js中的express上传设置 app.use(express.bodyParser({ uploadDir:"public/images", keepExtensions : true, limit:100000000, defer:true }));

###上传html

<form method=“post” enctype=“multipart/form-data” action="/upload"> <input type=“text” name=“username”> <input type=“password” name=“password”> <input type=“file” name=“pic”> <input type=“submit”> </form>

后台接受

exports.upload = function (req, res) {

console.log(req.body);

 req.form.on('progress', function(bytesReceived, bytesExpected) {

     console.log(((bytesReceived / bytesExpected)*100) + "% uploaded");

 });
 req.form.on('end', function() {
     console.log(req.files);

     var picName = req.files.pic.name;

     fs.rename(req.files.pic.path, "./public/images/pics/" + picName, function (err) {
         if (err) throw err;
         fs.unlink(req.files.pic.path, function () {
             if (err) throw err;
             //res.send('File uploaded to: ' + target_path + ' - ' + req.files.thumbnail.size + ' bytes');
         });
     });
     res.send("done");
 });

}

点击上传, console.log(req.body) 的结果是 {} ,空 文件pic null;

求大神帮忙,2个多星期了,一致没解决!真心谢谢

11 回复

你可以试一下multiparty,你如果只用bodyParser是不支持事件的。

我也是初学,当时研究上传也搞不懂。如果用第三方插件,记得把defer开起来,不然请求就全部都在bodyParser 这里了。

https://npmjs.org/package/multiparty

可阅读node高级课程 《Node服务器框架开发实战》

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没看,看不了!!!

能不能给我一个小例子啊,看了半天还是不太明白

@manbuzhiwu

上面就有例子啊

请问解决了吗?

我也是遇到同样的问题,不知所措啊

原来是这样的:

app.use(express.bodyParser({uploadDir:’./tmp’})); //一定要放在app.use(app.router);前面 app.use(app.router);

找了好久才找到原因。。。

@sihao1234 照你说的写

  app.use(express.bodyParser({uploadDir:'./tmp',keepExtensions : true, limit:100000000, defer:true }));
  app.use(express.static(__dirname + '/public'));
  app.use(app.router);

控制台显示 {} 24.552031461820327% uploaded 50.02751567050991% uploaded 到这里就死了不动了

貌似 req.form.on(‘end’ 根本就不执行

app.post('/upload', function (req, res) {
console.log(req.body);
 req.form.on('progress', function(bytesReceived, bytesExpected) {

     console.log(((bytesReceived / bytesExpected)*100) + "% uploaded");

 });
 req.form.on('end', function() {
console.log('end .... ');
   //  console.log(req.files);

     var picName = req.files.pic.name;
console.log('end .... '+req.files.pic.path +'--->'+ "public\\images\\pics\\" + picName)
     fs.rename(req.files.pic.path, "public\\images\\pics\\" + picName, function (err) {
         if (err) throw err;
    console.log('unlink');
         fs.unlink(req.files.pic.path, function () {
             if (err) throw err;
             res.send('File uploaded to: ' + target_path + ' - ' + req.files.thumbnail.size + ' bytes');
           
         });
           
     });
     
     
 });
 
});
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