簡單的回聲java客戶端服務器程序

Question

我想做一個簡單的回聲客戶端服務器程序。我能夠將客戶端的值發送到服務器並打印出來。但我不能夠從服務器到客戶端獲得的價值回報，這是低於

客戶端代碼

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"); 
} 

代碼}

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) { 

    } 
} 

}

服務器代碼

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); 
    } 
} 

}

預先感謝您。

Answer 1

您的服務器代碼中的哪個位置正嘗試寫入客戶端？你是否試圖在服務器控制檯上編寫代碼並期望它出現在客戶端控制檯上？然後，您需要產生一個線程並與其共享輸出流對象，以便回到客戶端。如果您只想回顯客戶端在控制檯中鍵入的字符串，請添加os.write（r.getBytes（））;和os.flush（）;在while循環的底部。