本地PC服务器和android模拟器之间的Socket连接

Question

我遇到了PC (Java编写的简单服务器)和android模拟器的套接字连接问题。连接建立，服务器发送数据，但当我尝试在android上读取它时，它总是读取一个空字符串。下面是我的部分代码:

服务器:

serverSocket = new ServerSocket(8888);
socket = serverSocket.accept();
PrintWriter output = new PrintWriter(socket.getOutputStream(), true);
output.write("Output string");
socket.close();

客户:

socket = new Socket("10.0.2.2", 8888);
input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String s = input.readLine();
Log.i(TAG, s);
socket.close();

为了清楚起见，我省略了try-catch和日志。根据日志，连接建立，服务器发送数据，但客户端只接收到空字符串。

Answer 1

这对我有用…(此代码仅用于服务器和客户端从套接字写入和读取数据)

服务器:

  BufferedOutputStream bos = new BufferedOutputStream(connection.
      getOutputStream());
  /** Instantiate an OutputStreamWriter object with the optional character
   * encoding.
   */
  OutputStreamWriter osw = new OutputStreamWriter(bos, "US-ASCII");
  String process = "Calling the Socket Server on "+ host + " port " + port;
  /** Write across the socket connection and flush the buffer */
  osw.write(process);
  osw.flush();

客户:

 /** Instantiate a BufferedInputStream object for reading
      /** Instantiate a BufferedInputStream object for reading
       * incoming socket streams.
       */
      BufferedInputStream bis = new BufferedInputStream(connection.
          getInputStream());
      /**Instantiate an InputStreamReader with the optional
       * character encoding.
       */
      InputStreamReader isr = new InputStreamReader(bis, "US-ASCII");
      /**Read the socket's InputStream and append to a StringBuffer */
      int c;
      while ( (c = isr.read()) != 13)
        instr.append( (char) c);
      /** Close the socket connection. */
      connection.close();
      System.out.println(instr);
     }
    catch (IOException f) {
      System.out.println("IOException: " + f);
    }
    catch (Exception g) {
      System.out.println("Exception: " + g);
    }

Answer 2

嗨@yuriy你的代码没有问题，实际上你没有写整行输出流，所以它给出错误使用它它为我工作

 serverSocket = new ServerSocket(8888);
    socket = serverSocket.accept();
    PrintWriter output = new PrintWriter(socket.getOutputStream(), true);
   output.println("Output string");
    socket.close();

只是替换输出。写入并输出。

Answer 3

模拟器监听他"自己的"本地网络端口。您应该从本地pc呼叫端口转发到模拟器端口。

读取android adb端口转发