Question

我正在尝试制作一个简单的echo客户端服务器程序。我能够将值从客户端发送到服务器并打印出来。但我无法从服务器到客户端获取值这是下面的代码

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");
}

}

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);
    }
}

}

提前谢谢。

Answer 1

您在服务器代码中的确切位置是否正在尝试写入客户端？您是否尝试在服务器控制台上编写并期望它出现在客户端控制台上？然后你需要产生一个线程并与它共享输出流对象，以便直接回到客户端。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（）;在你的while循环的底部。

简单的echo java客户端服务器程序

1 个答案: