import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;/*** 初学者TCP局域网 通讯  的消息发送* TCP 服务器* 必须先 打开服务器才能   打开客户端建立连接** @author silence*/
public class TcpInput {public static void main(String[] args) throws IOException {//监听10086端口ServerSocket socket = new ServerSocket(10086);//获得与客户端的连接Socket accept = socket.accept();//建立与客户端的连接InputStream input = accept.getInputStream();//将于客户端的字节输入流，通过字符转换流，转为Buff 高效字符输入流BufferedReader reader = new BufferedReader(new InputStreamReader(input));//读取一行String line = reader.readLine();//输出System.out.println(line);//写出数据到客户端OutputStream out = accept.getOutputStream();BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out));writer.write("敢骂我，你死定了，我是服务器");//关闭连接writer.close();out.close();reader.close();input.close();accept.close();socket.close();}
}

import java.io.*;
import java.net.Socket;/*** TCP  客户端* 必须先开启服务器，才能开启客户端 否则会报错  Connection refused: connect** @author silence*/
public class TcpOut {public static void main(String[] args) throws IOException {//通过ip 端口 连接到服务器Socket socket = new Socket("127.0.0.1", 10086);//获得字节输出流对象OutputStream out = socket.getOutputStream();//将字符数据，转为字节数组byte[] bytes = "你好啊，我是服务器，大傻逼".getBytes();//写出字节数组out.write(bytes);//关闭输出流socket.shutdownOutput();//建立输入流  获得服务器返回的数据InputStream input = socket.getInputStream();//通过字符转换流 将字节流 转换为Buff 高效字符输入流BufferedReader reader = new BufferedReader(new InputStreamReader(input));//读取一行数据String line = reader.readLine();System.out.println(line);reader.close();input.close();out.close();socket.close();}}