java – 第一个网络程序的帮助

发布时间：2020-12-15 04:52:51 所属栏目：Java 来源：网络整理

导读：这是代码. public class testClient {public static void main(String[] args) { testClient abc = new testClient(); abc.go();}public void go() { try { Socket s = new Socket("127.0.0.1",5000); InputStreamReader sr = new InputStreamReader(s.getIn

这是代码.

public class testClient {
public static void main(String[] args) {
    testClient abc = new testClient();
    abc.go();
}
public void go() {
    try {
        Socket s = new Socket("127.0.0.1",5000);
        InputStreamReader  sr = new InputStreamReader(s.getInputStream());
        BufferedReader reader = new BufferedReader(sr);
        String x = reader.readLine();
        System.out.println(x);
        reader.close();
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}

public class testServer {
public static void main(String[] args) {
    testServer server = new testServer();
    server.go();
}
public void go() {
    try {
        ServerSocket s = new ServerSocket(5000);
        while(true) {
            Socket sock = s.accept();

            PrintWriter writer = new PrintWriter(sock.getOutputStream());
            String toReturn = "No cake for you.";
            writer.println(toReturn);
        }
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}

java.io. *和java.net.*都在这两个类中导入.

现在,当我尝试运行这些(使用不同的终端)时,没有任何反应.我究竟做错了什么？

屏幕：http://i29.tinypic.com/250qlmt.jpg

解决方法

使用PrintWriter时,您需要调用flush方法.将您的代码更改为以下,它的工作原理:).

public class testServer {
public static void main(String[] args) {
    testServer server = new testServer();
    server.go();
}
public void go() {
    try {
        ServerSocket s = new ServerSocket(5000);
        while(true) {
            Socket sock = s.accept();

            PrintWriter writer = new PrintWriter(sock.getOutputStream());
            String toReturn = "No cake for you.";
            writer.println(toReturn);
            writer.flush();
        }
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}

（编辑：李大同）

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