多线程服务端与客户端通信(IO是阻塞的)_02

下面是多线程的;每次服务端接受请求，会创建一个线程专门处理这个请求；
虽然是多线程的，但还是阻塞，相当于单线程处理模式
public class TimeServer {

    public static void main(String[] args) {
        
        int port = 8088;//端口号
        ServerSocket server = null;
        try {
            server = new ServerSocket(port);
    
            System.out.println("The time server is start in port:"+port);
            Socket socket = null;
            while(true){
                //监听客户端，客户端向服务端发送请求，接收
                socket = server.accept();
                //当监听到客户端请求，服务端会启动一个线程，处理客户端相关业务；服务器端实现多线程
                new Thread(new TimeServerHandler(socket)).start();
            }
            
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            if(server != null){
                System.out.println("the server close");
                try {
                    server.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                server = null;
            }
        }    
    }    
}
---
服务器处理类；new TimeServerHandler(socket)将socket传入进去，然后生成输入、输出流出处理
public class TimeServerHandler implements Runnable{
    private Socket socket;
    
    public TimeServerHandler(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());
            String currentTime = null;
            String body = null;
            while(true){
                //读取客户端信息
                body = in.readLine();
                if(body == null)
                    break;
                System.out.println("the time server receive order:"+body);
                currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body) ? 
                        new java.util.Date(System.currentTimeMillis()).toString() : "BAD ORDER";
                out.println(currentTime);
            }
            
        } catch (Exception e) {
            if(in != null){
                try {
                    in.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            }
            
            if(out != null){
                out.close();
            }
            
            if(socket != null){
                try {
                    socket.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
                this.socket = null;
            }
            
        }
    }
    
}
------
客户端
public class TimeClient {

    public static void main(String[] args) {

        int port = 8088;//端口
        BufferedReader in = null;
        PrintWriter out = null;    
        Socket socket = null;
        try {
            //根据ip地址和端口连接服务器；
            socket = new Socket("127.0.0.1", 8088);
            //使用IO流读取或写入信息
            in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            out = new PrintWriter(socket.getOutputStream());
            out.println("QUERY TIME ORDER");
            System.out.println("send order 2 server succeed");
            String resp = in.readLine();
            System.out.println("NOW IS:"+resp);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            if(out != null){
                out.close();
            }
            if(in != null){
                try {
                    in.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            if(socket != null){
                try {
                    socket.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                socket = null;
            }
        }
    }
}