Java ssl服务器/客户端应用程序传递字节[]

Question

我正在使用安全连接（ssl）的java（服务器/客户端）中创建应用程序。

主要类有插座和流初始化：

服务器主类：

public static void main(String[] arstring) { 
      DataOutputStream out = null; 
    DataInputStream in = null; 
    SSLServerSocket sslserversocket = null; 
    SSLSocket sslsocket = null; 
... 

客户端主类：

public static void main(String[] args) throws IOException { 
    BufferedReader console; 
    DataInputStream in = null; 
    DataOutputStream out = null; 
    SSLSocket sslsocket = null; 
    ... 

我已经创建了相应的插座和流在每个类中：

服务器套接字和流：

个

SSLServerSocketFactory sslserversocketfactory = (SSLServerSocketFactory) SSLServerSocketFactory 
        .getDefault(); 
      sslserversocket = (SSLServerSocket) sslserversocketfactory 
        .createServerSocket(port); 
      System.out.println("Server: listening on port: " + port + "\n"); 
      System.out.println("Waiting for connection...." + "\n"); 
      sslsocket = (SSLSocket) sslserversocket.accept(); 
      connected = true; 
      System.out.println("Connection accepted \n"); 

      InputStream inputstreamconsola = System.in; 
      InputStreamReader inputstreamreaderconsola = new InputStreamReader(
        inputstreamconsola); 
      BufferedReader bufferedreaderconsola = new BufferedReader(
        inputstreamreaderconsola); 

      in = new DataInputStream(sslsocket.getInputStream()); 
      out = new DataOutputStream(sslsocket.getOutputStream()); 

客户端套接字和流：

SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault(); 
      sslsocket = (SSLSocket) sslsocketfactory.createSocket("localhost", 9999); 
      in = new DataInputStream(sslsocket.getInputStream()); 
      out = new DataOutputStream(sslsocket.getOutputStream()); 

我遇到的问题是，当我想通过一个byte []从服务器到客户端，字节[]已在正确的值服务器，但它到达客户端的空值。 注：当我使用的readUTF（）和writeUTF（）来传递字符串，发送的值被正确接收

“错误” 在这种情况下发生：

服务器：

 byte[] nonceBytes = new byte[(int) 8]; 
    nonce = System.currentTimeMillis(); 
    nonceBytes = longToByteArray(nonce); 

    System.out.print("\nNonce gerado: "); 
     for (int i = 0; i < 8; i++) 
     System.out.print(getHexString(nonceBytes[i])); 
    System.out.print("\n"); 
      out.writeUTF("pass#"); 
    out.write(nonceBytes, (int) 0, nonceBytes.length); VALUE HERE IS CORRECT 

客户端：

   byte[] nonceBytes = new byte[(int) 8]; 
       int nbytes = 0; 

       // read the nonce sent by server 
       try { 
        nbytes = in.read(nonceBytes); !!nonceBytes gets the null value instead of the value passed by the server!! 
       } catch (IOException e) { 
        System.err.println("Read: " + e.getMessage()); 
        readInput = false; 
        break; 
       } 

我想明白，为什么我不能用方法out.write发送字节[]（）的原因，并通过该方法得到它在客户端in.read（）。

Answer 1

你忽略了read().返回的结果你不能假定它填充缓冲区。在这种情况下，您应该使用DataInputStream.readFully()。

请注意，这个问题与SSL无关。