來自服務器的android client-server（socket）響應為null

Question

//服務器方法

public static void searchMethodCatcher()
{
  try
  {
 clientSocket = serverSocket.accept();
 isr = new InputStreamReader(clientSocket.getInputStream(),charset);
 br = new BufferedReader(isr);
 String str = br.readLine();
   if(str.charAt(0) == '{')
   {
      extendetSearchSystem(str);
   }
   else {simpleSearchListener(str);}    
 }catch(IOException e){e.printStackTrace();}
}
public static void simpleSearchListener(String str)
{
  String result = str;
        System.out.println(line);

  try {
        clientSocket.shutdownInput();
        pw = new PrintWriter(clientSocket.getOutputStream(),true);
        pw.write("DONE");
        pw.flush();
        pw.close();
        clientSocket.close();

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
public static void serverListener(int port)
{
    new Thread() {
        @Override
        public void run() {
            super.run();
            try
            {
                serverSocket = new ServerSocket(PORT_WORK);
            }catch(IOException e){
                e.printStackTrace();
                System.out.println("Could not listen on port"+ PORT_WORK);
            }
            while(isRun)
            {
                searchMethodCatcher();
               // simpleSearchListener();
            }
        }
    }.start();
}

//客戶端asyncTast clas

 class ServerWorker extends AsyncTask<Void,Void,Wrapper> {
    public int flag = 0, i = 0;
    public String[] tarr;
    public Wrapper w = new Wrapper();
    public String jsonResult,temp;
    public JSONObject jsonObject;
    @Override
    protected Wrapper doInBackground(Void... params) {
        try {
            try {
                clientSocket = new Socket(ip, port);
                if (line.isEmpty()) {
                    flag = 2;
                } else {
                    printWriter = new PrintWriter(clientSocket.getOutputStream());
                    printWriter.write(line);
                    printWriter.flush();
                    clientSocket.shutdownOutput();


                  //  clientSocket.shutdownOutput();
                    isr = new InputStreamReader(clientSocket.getInputStream(),"UTF-8");
                    br = new BufferedReader(isr);
                    Log.e("READY?",br.ready()+" INPUT?" + clientSocket.isInputShutdown());
                    String message = br.readLine();
                    if(br.readLine()!=null)
                    Log.e("LINE IS",br.readLine()+"");
                    else{ Log.e("ERROR","br.readLine is null")
                    }
                    clientSocket.close();

                }
            } catch (ConnectException e) {
                e.printStackTrace();
                flag = 1;
            }
        }catch (IOException e) {e.printStackTrace();}
        return w;
    }

    @Override
    protected void onProgressUpdate(Void... values) {
        super.onProgressUpdate(values);
    }

    @Override
    protected void onPostExecute(Wrapper wrapper) {
        super.onPostExecute(wrapper);

    }
 }
}

因此，當我在PC上運行服務器，在電話上運行客戶端，然后發送消息時，我得到以下信息。 服務器正常獲取消息： 服務器日志

但是服務器到電話的響應始終是空的客戶端日志

我認為我對輸入/輸出流做錯了。 請幫我解決這個問題。/

客戶端日志 11-15 22:29:31.750 16011-16011/com.kiskin.vlad.kvsearchsystem W/KeyCharacterMap﹕ Can't open keycharmap file 11-15 22:29:31.750 16011-16011/com.kiskin.vlad.kvsearchsystem W/KeyCharacterMap﹕ Error loading keycharmap file 11-15 22:29:31.750 16011-16011/com.kiskin.vlad.kvsearchsystem W/KeyCharacterMap﹕ Using default keymap 11-15 22:29:33.257 16011-16011/com.kiskin.vlad.kvsearchsystem I/ApplicationPackageManager﹕ cscCountry is not German : SEK 11-15 22:29:33.359 16011-16011/com.kiskin.vlad.kvsearchsystem W/KeyCharacterMap﹕ No keyboard for id -1 11-15 22:29:33.359 16011-16011/com.kiskin.vlad.kvsearchsystem W/KeyCharacterMap﹕ Using default keymap 11-15 22:29:35.289 16011-16011/com.kiskin.vlad.kvsearchsystem I/ApplicationPackageManager﹕ cscCountry is not German : SEK 11-15 22:29:40.578 16011-25796/com.kiskin.vlad.kvsearchsystem E/READY?﹕ false INPUT?false 11-15 22:29:41.976 16011-25796/com.kiskin.vlad.kvsearchsystem E/ERROR﹕ br.readLine is null

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14 500 грн Apple iPhone 6 16GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-space-gray/ Диапазон цен: 13 199 - 30 200 грн Apple iPhone 6s 64GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-space-gray/ Диапазон цен: 20 043 - 27 816 грн Apple iPhone 5 16GB (Black): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5-16gb-black/ Диапазон цен: 6 099 - 8 299 грн Apple iPhone 6 64GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-64gb-space-gray/ Диапазон цен: 15 782 - 25 457 грн Apple iPhone 6 16GB (Gold): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-gold/ Диапазон цен: 14 271 - 20 999 грн Apple iPhone 5S 16GB (Gold): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-16gb-gold/ Диапазон цен: 8 555 - 13 640 грн Apple iPhone 6s 16GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-space-gray/ Диапазон цен: 17 220 - 23 520 грн Apple iPhone 5 16GB (White): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5-16gb-white/ Диапазон цен: 6 099 - 10 417 грн Apple iPhone 6s 64GB (Rose Gold): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-rose-gold/ Диапазон цен: 20 160 - 29 551 грн Apple iPhone 5S 32GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-32gb-space-gray/ Диапазон цен: 9 018 - 15 750 грн Apple iPhone 6s 16GB (Rose Gold): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-rose-gold/ Диапазон цен: 17 349 - 23 520 грн Apple iPhone 6s 16GB (Gold): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-gold/ Диапазон цен: 17 145 - 23 520 грн Apple iPhone 6s Plus 64GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-plus-64gb-space-gray/ Диапазон цен: 24 630 - 33 450 грн Apple iPhone 5C 16GB (White): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5c-16gb-white/ Диапазон цен: 6 048 - 11 250 грн Apple iPhone 6s 128GB (Space Gray): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-128gb-space-gray/ Диапазон цен: 22 200 - 31 152 грн Apple iPhone 6 16GB (Silver): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-silver/ Диапазон цен: 14 250 - 22 015 грн Apple iPhone 6s 64GB (Silver): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-silver/ Диапазон цен: 20 050 - 27 816 грн Apple iPhone 5S 16GB (Silver): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-16gb-white/ Диапазон цен: 8 399 - 14 750 грн Apple iPhone 6 64GB (Silver): http://hotline.ua/mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-64gb-silver/ Диапазон цен: 15 531 - 21 649 грн Results count is 20 Results product is [Apple iPhone 5S 16GB (Space Gray) , Apple iPhone 6 16GB (Space Gray) , Apple iPhone 6s 64GB (Space Gray) , Apple iPhone 5 16GB (Black) , Apple iPhone 6 64GB (Space Gray) , Apple iPhone 6 16GB (Gold) , Apple iPhone 5S 16GB (Gold) , Apple iPhone 6s 16GB (Space Gray) , Apple iPhone 5 16GB (White) , Apple iPhone 6s 64GB (Rose Gold) , Apple iPhone 5S 32GB (Space Gray) , Apple iPhone 6s 16GB (Rose Gold) , Apple iPhone 6s 16GB (Gold) , Apple iPhone 6s Plus 64GB (Space Gray) , Apple iPhone 5C 16GB (White) , Apple iPhone 6s 128GB (Space Gray) , Apple iPhone 6 16GB (Silver) , Apple iPhone 6s 64GB (Silver) , Apple iPhone 5S 16GB (Silver) , Apple iPhone 6 64GB (Silver) ] Results price is [7 895 - 14 500 грн , 13 199 - 30 200 грн , 20 043 - 27 816 грн , 6 099 - 8 299 грн , 15 782 - 25 457 грн , 14 271 - 20 999 грн , 8 555 - 13 640 грн , 17 220 - 23 520 грн , 6 099 - 10 417 грн , 20 160 - 29 551 грн , 9 018 - 15 750 грн , 17 349 - 23 520 грн , 17 145 - 23 520 грн , 24 630 - 33 450 грн , 6 048 - 11 250 грн , 22 200 - 31 152 грн , 14 250 - 22 015 грн , 20 050 - 27 816 грн , 8 399 - 14 750 грн , 15 531 - 21 649 грн ] Results links is [/mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-16gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5-16gb-black/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-64gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-gold/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-16gb-gold/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5-16gb-white/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-rose-gold/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-32gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-rose-gold/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-16gb-gold/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-plus-64gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5c-16gb-white/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-128gb-space-gray/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-16gb-silver/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6s-64gb-silver/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-5s-16gb-white/ , /mobile-mobilnye-telefony-i-smartfony/apple-iphone-6-64gb-silver/ ]

Answer 1

String message = br.readLine();
if(br.readLine()!=null)
    Log.e("LINE IS",br.readLine()+"");
else{
     Log.e("ERROR","br.readLine is null");
}

您正在閱讀台詞並將其丟棄。 上面您應該測試和記錄的是message的內容。 不讀取message ，讀取另一行並進行測試，並記錄第三個readLine() 。 由於服務器甚至不發送一行，更不用說發送三行了，因此在后兩個readLine()調用中，除了null之外，您什么都不會得到。

注意：不要在accept()線程中進行I / O。 每個接受的套接字都應在其自己的線程中處理。