Java Socket接收和发送（字符串）

备注：必须先运行服务器端，然后运行客户端
1.客户端
LoginClient.java
package pb.socket.LoginStr;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class LoginClient {
    public static void main(String[] args) {
        try {
            //1.建立客户端socket连接，指定服务器位置及端口
            Socket socket =new Socket("localhost",8800);
            //2.得到socket读写流
            OutputStream os=socket.getOutputStream();
            PrintWriter pw=new PrintWriter(os);
            //输入流
            InputStream is=socket.getInputStream();
            BufferedReader br=new BufferedReader(new InputStreamReader(is));
            //3.利用流按照一定的操作，对socket进行读写操作
            String info="用户名：Tom,用户密码：123456";
            pw.write(info);
            pw.flush();
            socket.shutdownOutput();
            //接收服务器的相应
            String reply=null;
            while(!((reply=br.readLine())==null)){
                System.out.println("接收服务器的信息："+reply);
            }
            //4.关闭资源
            br.close();
            is.close();
            pw.close();
            os.close();
            socket.close();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
2.服务器端
LoginServer.java
package pb.socket.LoginStr;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class LoginServer {
    public static void main(String[] args) {
        try {
            //1.建立一个服务器Socket(ServerSocket)绑定指定端口
            ServerSocket serverSocket=new ServerSocket(8800);
            //2.使用accept()方法阻止等待监听，获得新连接
            Socket socket=serverSocket.accept();
            //3.获得输入流
            InputStream is=socket.getInputStream();
            BufferedReader br=new BufferedReader(new InputStreamReader(is));
            //获得输出流
            OutputStream os=socket.getOutputStream();
            PrintWriter pw=new PrintWriter(os);
            //4.读取用户输入信息
            String info=null;
            while(!((info=br.readLine())==null)){
                System.out.println("我是服务器，用户信息为："+info);
            }
            //给客户一个响应
            String reply="welcome";
            pw.write(reply);
            pw.flush();
            //5.关闭资源
            pw.close();
            os.close();
            br.close();
            is.close();
            socket.close();
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

 

转自：http://blog.csdn.net/qq7342272/article/details/9698413