Socket编程入门(一)实现简单的Socket实例

柔情只为你懂 2022-02-01 12:49 287阅读 0赞

使用Socket编写了一个服务端和客户端通讯的例子，下面帖代码，本文使用了java7的部分特性,因此需要jdk至少7以上。

# 客户端： #

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    public final class Client { 
    	final static int PORT = 8088;
    	final static String ADDRESS = "127.0.0.1";
    
    	public static void main(String[] args) { 
    		
    		try (Socket socket = new Socket(ADDRESS, PORT);
    				BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    				PrintWriter out = new PrintWriter(socket.getOutputStream(), true);) { 
    			while(true) { //循环发送消息
    			// 向服务器端发送数据
    			out.println("今天天气怎么样？");
    			String response = in.readLine();
    			System.out.println("from server:"+response);
    			out.println("我想知道我在服务器的积分是多少?");
    			Thread.sleep(2000);
    			}
    		} catch (UnknownHostException e) { 
    			e.printStackTrace();
    		} catch (IOException e) { 
    			e.printStackTrace();
    		} catch (InterruptedException e) { 
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    	}
    
    }

# 服务器端: #

import java.io.IOException;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    public class Server { 
    	final static int PORT = 8088;
    
    	public static void main(String[] args) { 
    		ServerSocket server = null;
    		try { 
    			server = new ServerSocket(PORT);
    			System.out.println("Server is start....");
    			while (true) { //通过循环使服务器可持续接收请求
    				// 进行阻塞,这里阻塞的是循环，但是当有请求传入时会放行一次
    				Socket socket = server.accept();
    				new Thread(new ServerHandler(socket)).start();
    			}
    		} catch (IOException e) { 
    			e.printStackTrace();
    		}
    
    	}
    }

# ServerHandler类 #

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintStream;
    import java.net.Socket;
    
    public class ServerHandler implements Runnable { 
    	private Socket socket;
    
    	public ServerHandler(Socket socket) { 
    		this.socket = socket;
    	}
    
    	@Override
    	public void run() { 
    		try(BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    				PrintStream out = new PrintStream(socket.getOutputStream(), true);){ 
    			String body = null;
    			while (true) { 
    				body = in.readLine();
    				if (body == null)
    					break;
    				System.out.println("from Client:" + body);
    				out.println("我是服务器返回的数据");
    			}
    		} catch (IOException e) { 
    			e.printStackTrace();
    		}
    
    	}
    
    }