javascript - Node JS : File upload Error [ERR_STREAM_WRITE_AFTER_END]

Question

所以我想做的是，我只是在 Formidable Module 的帮助下使用 nodeJS 将文件上传到特定文件夹，使用以下引用。 File Upload using nodeJS

现在，我的文件已上传到我想要的文件夹，但当我从 CLI 运行命令时，它给了我一个错误

这是我尝试过的代码:

var http = require('http') ;
var formidable = require('formidable') ;
var fs = require('fs');


http.createServer(function(req, res){
if(req.url == '/fileUpload'){
    var form = new formidable.IncomingForm();
    form.parse(req, function(err,fields,files){
        var oldpath = files.filetoupload.path;
        var newpath = 'C://xampp/htdocs/nodejs/upload/' + files.filetoupload.name;
        fs.rename(oldpath, newpath, function (err){
            if(err) throw err;
            res.write('File Uploaded and Moved !!');
            res.end();
        });
        res.write('File Uploaded');
        res.end();
    });
}
else{
    res.writeHead(200, {'Content-Type': 'text/html'}) ;
    res.write('<form action="fileUpload" method = "post" enctype="multipart/form-data">');
    res.write('<input type = "file" name="filetoupload" /><br/>') ;
    res.write('<input type="submit" />') ;
    res.write('</form>') ;
    return res.end() ;
    }
}).listen(8080) ;

我收到的错误是:

> Error [ERR_STREAM_WRITE_AFTER_END]: write after end
>     at write_ (_http_outgoing.js:572:17)
>     at ServerResponse.write (_http_outgoing.js:567:10)
>     at C:\xampp\htdocs\nodejs\upload.js:14:8
>     at FSReqWrap.args [as oncomplete] (fs.js:140:20) Emitted 'error' event at:
>     at writeAfterEndNT (_http_outgoing.js:634:7)
>     at process._tickCallback (internal/process/next_tick.js:63:19)

Answer 1

您正在尝试在关闭流后写入。

    var form = new formidable.IncomingForm();
    form.parse(req, function(err,fields,files){
        var oldpath = files.filetoupload.path;
        var newpath = 'C://xampp/htdocs/nodejs/upload/' + files.filetoupload.name;
        fs.rename(oldpath, newpath, function (err){
            if(err) throw err;
            res.write('File Uploaded and Moved !!');
            res.end(); // here, remove this end call
        });
    });