反编译遇到的问题

Question

public void run()
    {
        BufferedReader br = null;
        ss = new ServerSocket(9999);
_L2:
        long filelength;
        int result;
        s = ss.accept();
        br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        String fileName = br.readLine();
        filelength = Long.parseLong(br.readLine());
        String IP = s.getInetAddress().toString();
        String message = (new StringBuilder("\u662F\u5426\u63A5\u6536\u6765\u81EA")).append(IP).append("\u5927\u5C0F\u4E3A").append(filelength).append("\u7684").append(fileName).append("?").toString();
        result = JOptionPane.showConfirmDialog(null, message);
        if(result == 1)
        {
            try
            {
                if(br != null)
                    br.close();
            }
            catch(IOException e)
            {
                e.printStackTrace();
            }
            return;
        }
        if(result != 0) goto _L2; else goto _L1
_L1:
        (new Thread(new ReceiveThread(s, c, filelength))).start();
          goto _L2
        IOException e;
        e;
        e.printStackTrace();
        try
        {
            if(br != null)
                br.close();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        break MISSING_BLOCK_LABEL_232;
        Exception exception;
        exception;
        try
        {
            if(br != null)
                br.close();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        throw exception;
    }反编译后的结果，可以帮我把正确的代码写出来吗，我不懂~~

Answer 1

异常部分，你再考虑一下吧 do{
  
        long filelength;
        int result;
        Socket s = ss.accept();
        br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        String fileName = br.readLine();
        filelength = Long.parseLong(br.readLine());
        String IP = s.getInetAddress().toString();
        String message = (new StringBuilder("\u662F\u5426\u63A5\u6536\u6765\u81EA")).append(IP).append("\u5927\u5C0F\u4E3A").append(filelength).append("\u7684").append(fileName).append("?").toString();
        result = JOptionPane.showConfirmDialog(null, message);
        
        if(result == 1)
        {
            try
            {
                if(br != null)
                    br.close();
            }
            catch(IOException e)
            {
                e.printStackTrace();
            }
            return;
        }
        
        if(result == 0)
        {
          (new Thread(new ReceiveThread(s, c, filelength))).start();
        }
        
        
    }
    while(true);

Answer 2

自己在IDE里调试下 看看哪的错 一般就是 异常问题 还有变量多次重复定义

Answer 3

啥子反编译软件
把关键字goto都编译出来了

Answer 4

    public void run()
    {
        BufferedReader br = null;
        try
        {
            ss = new ServerSocket(9999);
            for(;;)
            {
                long filelength;
                int result;
                s = ss.accept();
                br = new BufferedReader(new InputStreamReader(s.getInputStream()));
                String fileName = br.readLine();
                filelength = Long.parseLong(br.readLine());
                String IP = s.getInetAddress().toString();
                String message = "是否接收来自"+IP +"大小为"+filelength+"的"+fileName+"?";
                result = JOptionPane.showConfirmDialog(null, message);
                if(result == 1)
                {
                    try
                    {
                        if(br != null)
                            br.close();
                    }
                    catch(IOException e)
                    {
                        e.printStackTrace();
                    }
                    return;
                }
                if(result == 0)
                    break;
                new Thread(new ReceiveThread(s, c, filelength)).start();
            }
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(br != null)
                    br.close(); 
            }
            catch(IOException e)
            {
                e.printStackTrace();
            }
        }
    }

Answer 5

如果你用javap列出pcode来，会更清楚。
总的来说这段代码的逻辑肯定是有问题的。
BuferedReader br的用法不对，基本上不能在当前的连接上接收文件。

Answer 6

前面是ServerSocket.accept的阻塞调用，后面是JOptionPane.showConfirmDialog Swing代码。
Swing程序根本就不能这么写。这代码够烂的了。

Answer 7

 public void run()
    {
        BufferedInputStream bis;
        BufferedOutputStream bos;
        byte b[];
        JFileChooser fc = new JFileChooser();
        int rt = fc.showSaveDialog(null);
        fc.setFileSelectionMode(1);
        if(rt != 0)
            break MISSING_BLOCK_LABEL_369;  ///为什么会有这行的~？        filepath = fc.getSelectedFile();
        bis = null;
        bos = null;
        b = new byte[0x20000];
        int num = 0;
        try
        {
            bis = new BufferedInputStream(sReceive.getInputStream());
            bos = new BufferedOutputStream(new FileOutputStream(filepath));
            long receiveData = 0L;
            long preTime = (new Date()).getTime();
            long curTime = preTime;
            long amount = 0L;
            int num;
            while((num = bis.read(b)) != -1) 
            {
                bos.write(b, 0, num);
                receiveData += num;
                amount += num;
                curTime = (new Date()).getTime();
                pb.setValue((int)((receiveData / filelength) * 100L));
                if(curTime - preTime > 500L)
                {
                    lSendRate.setText((new StringBuilder("\u4F20\u8F93\u901F\u7387\u4E3A")).append(getFilelength((amount * 1000L) / (curTime - preTime))).append("/\u79D2").toString());
                    preTime = curTime;
                    amount = 0L;
                }
            }
            lShowSendMessage.setText("\u6587\u4EF6\u63A5\u53D7\u5B8C\u6BD5");
            break MISSING_BLOCK_LABEL_334;
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        try
        {
            if(bis != null)
                bis.close();
            if(bos != null)
                bos.close();
            sReceive.close();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        break MISSING_BLOCK_LABEL_369;
        Exception exception;
        exception;
        try
        {
            if(bis != null)
                bis.close();
            if(bos != null)
                bos.close();
            sReceive.close();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
        throw exception;
        try
        {
            if(bis != null)
                bis.close();
            if(bos != null)
                bos.close();
            sReceive.close();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
    }异常怎么弄~？
各位高手，可以帮我解决上面的问题吗~？谢谢啦