java socket多线程使用-整理篇

使用多线程启动服务端

ServerSocket serverSocket = null;
		ExecutorService executorService = null;
		try {
			serverSocket = new ServerSocket(5678);
			executorService = Executors.newFixedThreadPool(5);
			while (true) {
				final Socket socket = serverSocket.accept();
				executorService.execute(new SocketThread(socket));				
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				if(serverSocket!=null)
					serverSocket.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

服务端线程类:SocketThread的run方法：

public void run() {
				System.out.println("接收到来自"+socket.getInetAddress()+":"+socket.getPort()+",的连接！");
				
				try {
					DataInputStream dis = new DataInputStream(socket.getInputStream());
					int readInt = dis.readInt();
					byte[] readData = new byte[readInt];
					dis.read(readData);
					System.out.println(new String(readData,"utf-8"));
					
					DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
					byte[] outData = "OKOK".getBytes("utf-8");
					int writeInt = outData.length;
					dos.writeInt(writeInt);
					dos.write(outData);
					dos.flush();
					
					dis.close();
					dos.close();
				} catch (Exception e) {
					e.printStackTrace();
				}finally{
					try {
						if(socket!=null)
							socket.close();
					} catch (Exception e2) {
						e2.printStackTrace();
					}
				}
				
				System.out.println("来自"+socket.getInetAddress()+":"+socket.getPort()+",的连接处理完毕！");
			}

客户端的读写，其它和上面接收到监听后的读写差不多：

Socket socket=null;
		try {
			socket = new Socket(InetAddress.getLocalHost(), 5678);
			DataInputStream dis = new DataInputStream(socket.getInputStream());
			int readInt = dis.readInt();
			byte[] readData = new byte[readInt];
			dis.read(readData);
			System.out.println(new String(readData,"utf-8"));
			
			DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
			byte[] outData = "OKOK".getBytes("utf-8");
			int writeInt = outData.length;
			dos.writeInt(writeInt);
			dos.write(outData);
			dos.flush();
			
			dis.close();
			dos.close();
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				if(socket!=null)
					socket.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}