JAVA中的Socket(一)

旧城等待， 2022-03-25 12:06 126阅读 0赞

**socket编程最简单的例子**  
**Server**

import java.io.IOException;
    import java.net.ServerSocket;
    import java.net.Socket;
    public class Server {
    	final static int PROT = 8765;
    	public static void main(String[] args) {
    		ServerSocket server = null;
    		try {
    			server = new ServerSocket(PROT);
    			System.out.println(" server start .. ");
    			//进行阻塞
    			Socket socket = server.accept();
    			//新建一个线程执行客户端的任务
    			new Thread(new ServerHandler(socket)).start();
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			if(server != null){
    				try {
    					server.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			server = null;
    		}
    
    	}
    }

\*\*Client \*\*

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.Socket;
    public class Client {
    
    	final static String ADDRESS = "127.0.0.1";
    	final static int PORT = 8765;
    	
    	public static void main(String[] args) {
    		
    		Socket socket = null;
    		BufferedReader in = null;
    		PrintWriter out = null;
    		
    		try {
    			socket = new Socket(ADDRESS, PORT);
    			in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    			out = new PrintWriter(socket.getOutputStream(), true);
    			
    			//向服务器端发送数据
    			out.println("接收到客户端的请求数据...");
    			out.println("接收到客户端的请求数据1111...");
    			String response = in.readLine();
    			System.out.println("Client: " + response);
    			
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			if(in != null){
    				try {
    					in.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			if(out != null){
    				try {
    					out.close();
    				} catch (Exception e) {
    					e.printStackTrace();
    				}
    			}
    			if(socket != null){
    				try {
    					socket.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			socket = null;
    		}
    	}
    }

**ServerHandler辅助类**

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.Socket;
    public class ServerHandler implements Runnable{
    	private Socket socket ;
    	
    	public ServerHandler(Socket socket){
    		this.socket = socket;
    	}
    	
    	@Override
    	public void run() {
    		BufferedReader in = null;
    		PrintWriter out = null;
    		try {
    			in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
    			out = new PrintWriter(this.socket.getOutputStream(), true);
    			String body = null;
    			while(true){
    				body = in.readLine();
    				if(body == null) break;
    				System.out.println("Server :" + body);
    				out.println("服务器端回送响的应数据.");
    			}
    			
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			if(in != null){
    				try {
    					in.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			if(out != null){
    				try {
    					out.close();
    				} catch (Exception e) {
    					e.printStackTrace();
    				}
    			}
    			if(socket != null){
    				try {
    					socket.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			socket = null;
    		}
    	}
    }