• Socket编程


    package cn.bdqn.tcp;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    /**
     * @author 小豆腐
     * 
     * 服务器(超市)
     *
     */
    public class ServerSocketTest {
    
        public static void main(String[] args) {
            ServerSocket serverSocket=null;
            Socket socket=null;  //顾客
            InputStream stream=null; //购物车
            BufferedReader br=null;  //收银员
            
            OutputStream os=null; //收银员的回应语句
            try {
                //创建一个指定位置的超市
                 serverSocket=new ServerSocket(8800);
                 //超市开门 等待顾客上门购物
                 socket=serverSocket.accept();
                 //顾客开始购物
                 stream=socket.getInputStream();
                 /**
                  * 买单
                  * BufferedReader收银员拿InputStreamReader(扫码枪)
                  * 扫购物车中的物品 stream
                  */
                 br=new BufferedReader(new InputStreamReader(stream));
                 /**
                  * 怎么扫码的?只要是购物车中有物品就 一个一个扫码
                  * info理解成 账单
                  * 每扫描一次,账单就多一个记录
                  */
                 String  info=null;
                 while((info=br.readLine())!=null){ //说明购物车中有东西
                     System.out.println("顾客的账单====》"+info);
                 }
                 //只是说 顾客结账完毕 并没有走出超市(关闭)
                 socket.shutdownInput();
                 os=socket.getOutputStream(); //打开输出流
                  //服务员说:谢谢光临!
                 os.write("谢谢您的光临!".getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    os.close();
                    //超市关门   这个超市 只接待了一个顾客 就关门了???
                    br.close();
                    stream.close();
                    socket.close();
                    serverSocket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                
                
            }
    
        }
    
    }
    package cn.bdqn.tcp;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    /**
     * 
     * @author 小豆腐
     *
     *
     *客户端(顾客)
     */
    public class SocketTest {
    
        public static void main(String[] args) {
            Socket socket=null;  //顾客
            OutputStream os=null; //钱包
            
            InputStream stream=null; //账单
            BufferedReader br=null;  //收银员
            
            try {
                //去哪个地方(localhost)的哪个超市(8800)购物?
                socket=new Socket("localhost", 8800);
                //打开钱包,疯狂购物   花钱===》出! 
                os=socket.getOutputStream();
                //开始消费  买什么东西?
                os.write("我买了一束玫瑰花!".getBytes());
                //购物完毕
                socket.shutdownOutput();
                
                //接收收银员的回应
                stream=socket.getInputStream();
                br=new BufferedReader(new InputStreamReader(stream));
                String  info=null;
                while((info=br.readLine())!=null){
                    System.out.println(info);
                }
            } catch (UnknownHostException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                //关闭资源
                try {
                    br.close();
                    stream.close();
                    os.close();
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                
            }
            
    
        }
    
    }

    传递一个对象

    package cn.bdqn.tcp.object;
    
    import java.io.Serializable;
    
    /**
     * 
     * @author 小豆腐
     *  用户的实体类
     */
    public class User  implements Serializable  {
        
        private String  name;
        private String  pwd;
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public String getPwd() {
            return pwd;
        }
        public void setPwd(String pwd) {
            this.pwd = pwd;
        }
        public User(String name, String pwd) {
            super();
            this.name = name;
            this.pwd = pwd;
        }
        public User() {
            super();
        }
        @Override
        public String toString() {
            return "User [name=" + name + ", pwd=" + pwd + "]";
        }
        
    
    }
    package cn.bdqn.tcp.object;
    
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.ObjectInputStream;
    import java.io.OutputStream;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    /**
     * 
     * @author 小豆腐
     *
     *服务器
     */
    public class ServerLogin {
    
        public static void main(String[] args) {
            ServerSocket serverSocket=null;
            Socket socket=null;
            InputStream is=null;
            OutputStream os=null;
            //反序列化
            ObjectInputStream ois=null;
            
            try {
                //创建serverSocket
                serverSocket=new ServerSocket(8800);
                //监听客户端的登录信息
                socket=serverSocket.accept();
                //打开输入输出流
                is=socket.getInputStream();
                os=socket.getOutputStream();
                ois=new ObjectInputStream(is);
                //获取登录用户的信息
                User user=(User) ois.readObject();
                System.out.println("登录用户的用户名是:"+user.getName());
                System.out.println("登录用户的密码是:"+user.getPwd());
                socket.shutdownInput();
                
                //服务器给客户端一个响应
                os.write("恭喜您!登录成功!".getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }finally{
                try { //释放资源
                    os.close();
                    socket.close();
                    ois.close();
                    is.close();
                    serverSocket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            
            
    
        }
    
    }
    package cn.bdqn.tcp.object;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.io.OutputStream;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    /**
     * 
     * @author 小豆腐
     *
     *客户端
     */
    public class ClientLogin {
    
        public static void main(String[] args) {
            Socket socket=null;
            InputStream is=null;
            OutputStream os=null;
            //序列化
            ObjectOutputStream oos=null;
            BufferedReader br=null;
            
            try {
                //创建socket对象
                socket=new Socket("localhost", 8800);
                //打开输入输出流
                is=socket.getInputStream();
                os=socket.getOutputStream();
                //创建一个登录的对象
                User user=new User("小白", "123456");
                oos=new ObjectOutputStream(os);
                //开始把对象发送给服务器
                oos.writeObject(user);
                socket.shutdownOutput();
                
                //接收服务器的回应
                br=new BufferedReader(new InputStreamReader(is));
                String  info=null;
                while((info=br.readLine())!=null){
                    System.out.println("服务器给我们的回应是:"+info);
                }
            } catch (UnknownHostException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try { //释放资源
                    br.close();
                    socket.close();
                    oos.close();
                    os.close();
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            
            
            
        }
    
    }

     服务器循环监听客户端的登陆信息, 客户端代码和User类不变

    package cn.bdqn.tcp.thread;
    
    import java.io.IOException;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    /**
     * 
     * @author 小豆腐
     *  服务器
     */
    public class ServerLogin {
        public static void main(String[] args) {
            ServerSocket serverSocket=null;
            Socket socket=null;
            try {
                //创建服务器的serverSocket对象
                serverSocket=new ServerSocket(8800);
                //一直监听
                while(true){
                    socket=serverSocket.accept();
                    //创建对应的线程类
                    LoginThread thread=new LoginThread(socket);
                    //启动
                    thread.start();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            
    
        }
    
    }

    需要的线程类

    package cn.bdqn.tcp.thread;
    
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.ObjectInputStream;
    import java.io.OutputStream;
    import java.net.Socket;
    
    import cn.bdqn.tcp.object.User;
    /**
     * 
     * @author 小豆腐
     * 服务器监听的线程类
     *
     */
    public class LoginThread extends Thread {
        Socket socket=null;
        
        
        public LoginThread(Socket socket) {
            this.socket=socket;
        }
    
        @Override
        public void run() {
            InputStream is=null;
            OutputStream os=null;
            //反序列化
            ObjectInputStream ois=null;
            try {
                //打开输入输出流
                is=socket.getInputStream();
                os=socket.getOutputStream();
                ois=new ObjectInputStream(is);
                //获取登录用户的信息
                User user=(User) ois.readObject();
                System.out.println("登录用户的用户名是:"+user.getName());
                System.out.println("登录用户的密码是:"+user.getPwd());
                socket.shutdownInput();
                //服务器给客户端一个响应
                os.write("恭喜您!登录成功!".getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }finally{
                try { //释放资源
                    os.close();
                    socket.close();
                    ois.close();
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        
        
        
    }
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  • 原文地址:https://www.cnblogs.com/999-/p/6090138.html
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