Question

我收到FileNotFoundException错误。

代码：

File getpath = Environment.getExternalStoragePublicDirectory（Environment.DIRECTORY_MOVIES）; String dir = getpath.getAbsolutePath（）; Log.e（“dir的文件名”，dir）;

            //"/storage/emulated/0/Movies/"

            try {
                FileInputStream fstrm = new FileInputStream(dir+filename);
                VideoFileUploadNew hfu = new VideoFileUploadNew( ServerURL.VIDEO_UPLOAD, filename);

                upflag = hfu.Send_Now(fstrm);
                Log.e("filename of v up",filename);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }

公共类VideoFileUploadNew实现了Runnable {

    URL connectURL;
    String responseString;
    String Title;
    String fileName;
    String Description;
    byte[ ] dataToServer;
    FileInputStream fileInputStream = null;

    public VideoFileUploadNew(String urlString, String file){
        try{
            connectURL = new URL(urlString);
            fileName = file;

        }catch(Exception ex){
            Log.i("HttpFileUpload","URL Malformatted");
        }
    }

    public Boolean Send_Now(FileInputStream fStream){
        fileInputStream = fStream;
        return Sending();
    }

    Boolean Sending(){

        System.out.println("file Name is :"+fileName);

        String iFileName = fileName;
        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        String Tag="fSnd";
        try
        {
            Log.e(Tag,"Starting Http File Sending to URL");

            // Open a HTTP connection to the URL
            HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection();

            // Allow Inputs
            conn.setDoInput(true);

            // Allow Outputs
            conn.setDoOutput(true);

            // Don't use a cached copy.
            conn.setUseCaches(false);

            // Use a post method.
            conn.setRequestMethod("POST");

            conn.setRequestProperty("Connection", "Keep-Alive");

            conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

            DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

            dos.writeBytes("Content-Disposition: form-data; name=\"vfile\";filename=\"" + iFileName +"\"" + lineEnd);
            dos.writeBytes(lineEnd);

            Log.e(Tag,"Headers are written");

            // create a buffer of maximum size
            int bytesAvailable = fileInputStream.available();

            int maxBufferSize =9024;
            int bufferSize = Math.min(bytesAvailable, maxBufferSize);
            byte[ ] buffer = new byte[bufferSize];

            // read file and write it into form...
            int bytesRead = fileInputStream.read(buffer, 0, bufferSize);

            while (bytesRead > 0)
            {
                dos.write(buffer, 0, bufferSize);
                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable,maxBufferSize);
                bytesRead = fileInputStream.read(buffer, 0,bufferSize);
            }
            dos.writeBytes(lineEnd);
            dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

            // close streams
            fileInputStream.close();

            dos.flush();

            Log.e(Tag,"File Sent, Response: "+String.valueOf(conn.getResponseCode()));

            InputStream is = conn.getInputStream();

            // retrieve the response from server
            int ch;

            StringBuffer b =new StringBuffer();
            while( ( ch = is.read() ) != -1 ){ b.append( (char)ch ); }
            String s=b.toString();
            Log.i("Response",s);

            dos.close();

            if(String.valueOf(conn.getResponseCode()).equals("200"))
            {
                return true;
            }else{
                return false;
            }
        }
        catch (MalformedURLException ex)
        {
            Log.e(Tag, "URL error: " + ex.getMessage(), ex);
        }

        catch (IOException ioe)
        {
            Log.e(Tag, "IO error: " + ioe.getMessage(), ioe);
        }
        return false;
    }

    @Override
    public void run() {
    }

}

Answer 1

您的问题仍然很模糊，但其中一个原因是 - 当您获取文件的相对URI时，但需要上传的绝对URI。

您可以查看不同的FileUtil类，例如https://github.com/z0rawarr/AndroidUtilCode/blob/master/utilcode/src/main/java/com/blankj/utilcode/utils/FileUtils.java

从URI获取绝对路径并使用该路径上传。另外，不要忘记使用调试器，并在uploadFile（）上应用断点来调试URI。

将文件从SD卡上传到服务器时出现FileNotFoundException

1 个答案: