client.java

一个JAVA的SOCKET例子

package socket;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;

public class Client {
    public static void main(String args[]) {
        String server = "192.168.16.49";
        //        if (args.length < 1) { // 判断命令加参数没有
        //            System.out.println("You forget the name of the server!");
        //            System.exit(1); // 如果没加参数就退出
        //        }

        Socket socket;
        String s = "[e-mail]";
        InputStream Is;
        OutputStream Os;
        PrintStream PS;
        try {
            // 向主机名为args[0]的服务器申请连接
            // 注意端口号要与服务器保持一致:4321
            socket = new Socket(server, 4321);

            System.out.println("Client ok");
            System.out
                    .println("************************************************");

            // 获得对应socket的输入/输出流
            Is = socket.getInputStream();
            Os = socket.getOutputStream();
            // 建立数据流
            //serverInput = new DataInputStream(Is);
            BufferedReader serverInput = new BufferedReader(
                    new InputStreamReader(Is));
            PS = new PrintStream(Os);
            //DataInputStream clientInput = new DataInputStream(System.in);
            BufferedReader clientInput = new BufferedReader(
                    new InputStreamReader(System.in));
            while (true) {
                System.out.print("You Say:");
                s = clientInput.readLine(); // 读取用户输入的字符串
                PS.println(s); // 将读取得字符串传给server
                if (s.trim().equalsIgnoreCase("Bye"))
                    break; // 如果是"BYE",就退出
                else {
                    System.out.println("");
                    System.out.println("please wait server's message...");
                    System.out.println("");
                }
                s = serverInput.readLine(); // 从服务器获得字符串
                System.out.println("Server Say:" + s); // 打印字符串
                if (s.trim().equalsIgnoreCase("Bye"))
                    break; // 如果是"BYE",就退出

            }

            // 关闭连接
            serverInput.close(); // 关闭数据输入流
            PS.close(); // 关闭数据输出流
            Is.close(); // 关闭输入流
            Os.close(); // 关闭输出流
            socket.close(); // 关闭socket
        } catch (Exception e) {
            System.out.println("Error:" + e);
        }
    }

}