上传后，媒体文件无法播放角度为2的文件，显示未找到404 [英] After upload a media file can not play the file in angular 2, shows 404 not found

问题描述

我在Angular2中遇到问题:我具有用于媒体上传的模块(图像/视频).因此，上载模块工作正常，但是当我尝试观看视频或查看图像文件上载文件后，出现404未找到错误.但是，如果我运行ng build并再次刷新它，我可以观看视频或查看图像文件.我是在做错什么，还是可以用某种方式解决呢?

I have a problem in Angular2: I have module for media upload (Images/Videos). So upload module is working perfect but after uploading the file when I try to watch the video or view the image file, I get a 404 Not Found error. But if i run ng build and refresh it again I can watch the video or view the image files. Am i doing something wrong or we can handle this with someway?

GET http://localhost:4200/dist/assets/mediauploads/Desktop%20(19).jpg 404(未找到)

GET http://localhost:4200/dist/assets/mediauploads/Desktop%20(19).jpg 404 (Not Found)

//This is my node js code

socket.on('Upload', function (data){
    var Name = data['Name'];
    Files[Name]['Downloaded'] += data['Data'].length;
    Files[Name]['Data'] += data['Data'];
    if(Files[Name]['Downloaded'] == Files[Name]['FileSize']) //If File is Fully Uploaded
    {
        fs.write(Files[Name]['Handler'], Files[Name]['Data'], null, 'Binary', function(err, Writen){
           var inp = fs.createReadStream("./src/assets/temp/" + Name);
           var out = fs.createWriteStream("./src/assets/mediauploads/" + Name);

          inp.pipe(out);
                  inp.on("end", function() {
                      var path="./src/assets/temp/" + Name;
                      var tempFile = fs.openSync(path, 'r');
                      if(fs.existsSync(path)){
                      fs.closeSync(tempFile);
                       fs.unlinkSync(path);
                       socket.emit('Done', {'Image' : './src/assets/mediauploads/' + Name});
                      }

                  });
        });
    }
    else if(Files[Name]['Data'].length > 10485760){ //If the Data Buffer reaches 10MB
        fs.write(Files[Name]['Handler'], Files[Name]['Data'], null, 'Binary', function(err, Writen){
            Files[Name]['Data'] = ""; //Reset The Buffer
            var Place = Files[Name]['Downloaded'] / 524288;
            var Percent = (Files[Name]['Downloaded'] / Files[Name]['FileSize']) * 100;
            socket.emit('MoreData', { 'Place' : Place, 'Percent' :  Percent});
        });
    }
    else
    {
        var Place = Files[Name]['Downloaded'] / 524288;
        var Percent = (Files[Name]['Downloaded'] / Files[Name]['FileSize']) * 100;
        socket.emit('MoreData', { 'Place' : Place, 'Percent' :  Percent});
    }
});

推荐答案

当您运行 ng build 时，Angular应用程序将内置在 dist 文件夹中.我的猜测是，您的应用程序设置方式实际上是将图像上传到您的 src/assets 文件夹中.从 dist 文件夹运行应用程序时，新上传的图像/视频不可见.重建应用程序时，文件将复制到 dist 文件夹并可以访问.

When you run ng build the angular app is built into the dist folder. My guess is you have your app setup in such a way you are actually uploading the image into your src/assets folder. As you are running the app from the dist folder your newly uploaded image/video is not visible. When you rebuild the app the file is copied to the dist folder and becomes accesible.

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