简单的回声java客户端服务器程序

Question

我想做一个简单的回声客户端服务器程序。我能够将客户端的值发送到服务器并打印出来。但我不能够从服务器到客户端获得的价值回报，这是低于

客户端代码

public class Client_1 { 

/** 
* @param args the command line arguments 
*/ 
public static void main(String[] args) throws IOException { 
    System.out.println("client signing on"); 
    Socket soc = new Socket("127.0.0.1", 5556); 
    t t = new t(soc); 
    Thread t1 = new Thread(t); 
    t1.start(); 
    OutputStream os = soc.getOutputStream(); 

    OutputStreamWriter osw = new OutputStreamWriter(os); 
    BufferedWriter bw = new BufferedWriter(osw); 
    PrintWriter pw = new PrintWriter(bw, true); 
    InputStream is = System.in; 
    InputStreamReader isr = new InputStreamReader(is); 
    BufferedReader br = new BufferedReader(isr); 
    String s = br.readLine(); 
    while (!s.equals("end")) { 
     // System.out.println(s); 
     pw.println(s); 
     s = br.readLine(); 
    } 
    pw.println("end"); 
    System.out.println("client signing off"); 
} 

代码}

class t implements Runnable { 

static Socket soc; 
static String read; 

public t(Socket soc) { 
    this.soc = soc; 

} 

@Override 
public void run() { 
    try { 
     System.out.println("conn established"); 
     InputStream is = soc.getInputStream(); 
     InputStreamReader isr = new InputStreamReader(is); 
     BufferedReader br = new BufferedReader(isr); 
     String s = br.readLine(); 
     while (!s.equals("end")) { 
      System.out.println(s); 
      s = br.readLine(); 
     } 

    } catch (IOException ex) { 

    } 
} 

}

服务器代码

public class server { 

static Socket soc; 
static String r; 
static BufferedReader br; 

/** 
* @param args the command line arguments 
*/ 
public static void main(String[] args) { 

    try { 
     System.out.println("server signing on"); 
     ServerSocket ss = new ServerSocket(5556); 
     soc = ss.accept(); 
     InputStream is = soc.getInputStream(); 
     InputStreamReader isr = new InputStreamReader(is); 
     OutputStream os; 
     os = soc.getOutputStream(); 
     OutputStreamWriter osw = new OutputStreamWriter(os); 
     BufferedWriter bw = new BufferedWriter(osw); 
     PrintWriter pw = new PrintWriter(bw,true); 

     br = new BufferedReader(isr); 
     r = br.readLine(); 
     while (!r.equals("end")) { 
      System.out.println(r); 
     // PrintWriter out = new PrintWriter(new FileWriter("c:\\outputfile.txt")); 
      pw.print("test"); 
      pw.print(r); 
      r = br.readLine(); 

     }pw.print("end"); 
     System.out.println("server signing off"); 
    } catch (Exception e) { 
     System.out.println(e); 
    } 
} 

}

预先感谢您。

Answer 1

您的服务器代码中的哪个位置正尝试写入客户端？你是否试图在服务器控制台上编写代码并期望它出现在客户端控制台上？然后，您需要产生一个线程并与其共享输出流对象，以便回到客户端。如果您只想回显客户端在控制台中键入的字符串，请添加os.write（r.getBytes（））;和os.flush（）;在while循环的底部。