JAVA中的Socke(二)

系统管理员 2022-03-25 12:06 75阅读 0赞

**socket简单例子二，上一个例子是接受一个请求处理一个请求，但是在实际情况中很明显满足不了需求，一般是用一个线程池来处理接受到的请求，这里记录一下**  
**Server端**

import java.io.BufferedReader;
    import java.io.PrintWriter;
    import java.net.ServerSocket;
    import java.net.Socket;
    public class Server {
    	final static int PORT = 8765;
    	public static void main(String[] args) {
    		ServerSocket server = null;
    		BufferedReader in = null;
    		PrintWriter out = null;
    		try {
    			server = new ServerSocket(PORT);
    			System.out.println("server start");
    			Socket socket = null;
    			HandlerExecutorPool executorPool = new HandlerExecutorPool(50, 1000);
    			while(true){
    				socket = server.accept();
    				executorPool.execute(new ServerHandler(socket));
    			}
    			
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			if(in != null){
    				try {
    					in.close();
    				} catch (Exception e1) {
    					e1.printStackTrace();
    				}
    			}
    			if(out != null){
    				try {
    					out.close();
    				} catch (Exception e2) {
    					e2.printStackTrace();
    				}
    			}
    			if(server != null){
    				try {
    					server.close();
    				} catch (Exception e3) {
    					e3.printStackTrace();
    				}
    			}
    			server = null;				
    		}
    	}
    }

**Client**

package bhz.bio2;
    
    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 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);
    			
    			out.println("Client request");
    			
    			String response = in.readLine();
    			System.out.println("Client:" + response);
    			
    			
    		}  catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} finally {
    			if(in != null){
    				try {
    					in.close();
    				} catch (Exception e1) {
    					e1.printStackTrace();
    				}
    			}
    			if(out != null){
    				try {
    					out.close();
    				} catch (Exception e2) {
    					e2.printStackTrace();
    				}
    			}
    			if(socket != null){
    				try {
    					socket.close();
    				} catch (Exception e3) {
    					e3.printStackTrace();
    				}
    			}
    			socket = null;				
    		}
    	}
    }

\*\*HandlerExecutorPool \*\*

import java.util.concurrent.ArrayBlockingQueue;
    import java.util.concurrent.ExecutorService;
    import java.util.concurrent.ThreadPoolExecutor;
    import java.util.concurrent.TimeUnit;
    
    public class HandlerExecutorPool {
    	private ExecutorService executor;
    	public HandlerExecutorPool(int maxPoolSize, int queueSize){
    		this.executor = new ThreadPoolExecutor(
    				Runtime.getRuntime().availableProcessors(),
    				maxPoolSize, 
    				120L, 
    				TimeUnit.SECONDS,
    				new ArrayBlockingQueue<Runnable>(queueSize));
    	}
    	public void execute(Runnable task){
    		this.executor.execute(task);
    	}
    }

**ServerHandler**  
服务端处理代理类。

import java.io.BufferedReader;
    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("Server response");
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			if(in != null){
    				try {
    					in.close();
    				} catch (Exception e1) {
    					e1.printStackTrace();
    				}
    			}
    			if(out != null){
    				try {
    					out.close();
    				} catch (Exception e2) {
    					e2.printStackTrace();
    				}
    			}
    			if(socket != null){
    				try {
    					socket.close();
    				} catch (Exception e3) {
    					e3.printStackTrace();
    				}
    			}
    			socket = null;			
    		}
    	}
    }