【Java】ServerSocket类和Socket类实例化应用

落日映苍穹つ 2021-12-21 16:34 332阅读 0赞

使用流进行信息的传输，注意读写顺序要一致，读写方法具有对象针对性使用正确的的读写方法。如 writeInt readInt  
下面的代码使用进程管理的方法实现Server的不间断操作。并且当有多个客户机时，可用进程管理的方式调和避免冲突。

package net;
    
    import java.io.*;
    import java.net.ServerSocket;
    import java.net.Socket;
    class Service implements Runnable{
        
       private ServerSocket server=null;
        private Socket s=null;
        private InputStream input=null;
        private OutputStream output=null;
        private ObjectOutputStream objout= null;
        private PrintWriter pw=null;
        public Service(Socket s){
        
            this.s=s;
        }
        @Override
        public void run(){
        
            try {
        
                input=s.getInputStream();
                output=s.getOutputStream();
                objout =new ObjectOutputStream(output);
                pw=new PrintWriter(output);
                Student ss=new Student(2232,"顾城");
                //发一个整数
                objout.writeInt(200);
                //发一个浮点数
                objout.writeDouble(324.324);
                //发一个字符串
    //            pw.println("Lose Yourself");
    //            //发一个学生对象
                objout.writeObject(ss);
    //            pw.flush();
                objout.flush();
            } catch (Exception e) {
        
                e.printStackTrace();
            }
        }
    }
    public class ObjectServer {
        
    
        public static void main(String[] args) {
        
            ServerSocket server=null;
            Socket s=null;
            InputStream input=null;
            OutputStream output=null;
            ObjectOutputStream objout= null;
            PrintWriter pw=null;
            try {
        
                server = new ServerSocket(9999);
                System.out.println("监听客户连接。。。");
                while (true) {
        
                    s=server.accept();//监听
                    System.out.println("已监听到客户连接[远程主机："+
                            s.getRemoteSocketAddress()
                            +":端口:"+s.getPort()+"]");
            new Thread(new Service(s)).start();
                }
            } catch (IOException e) {
        
                e.printStackTrace();
            }
    
        }
    }

package net;
    
    import java.io.*;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    public class ObjectClient {
        
        public static void main(String[] args) {
        
            Socket s=null;
            String ip="192.168.50.3";
            int port=9999;
            InputStream input=null;
            OutputStream output=null;
              ObjectInputStream objin=null;
    
            try {
        
                s=new Socket(ip,port);
                input=s.getInputStream();
                output=s.getOutputStream();
                objin =new ObjectInputStream(input);
                System.out.println(objin.readInt());
                System.out.println(objin.readDouble());
    //            BufferedReader br=new BufferedReader(
    //                    new InputStreamReader(input)
    //            );
    //            String str=br.readLine();
    //            System.out.println(str);
                System.out.println(objin.readObject());
            } catch (Exception e) {
        
                e.printStackTrace();
            }
        }
    
    }

package net;
    
    import java.io.Serializable;
    
    public class Student implements Serializable {
        
     private    int id;
       private String name;
       public Student(){
        
    
       }
    
        @Override
        public String toString() {
        
            return "Student{" +
                    "id=" + id +
                    ", name='" + name + '\'' +
                    '}';
        }
    
        public Student(int id, String name) {
        
            this.id = id;
            this.name=name;
        }
    
        public String getName() {
        
            return name;
        }
    
        public void setName(String name) {
        
            this.name = name;
        }
    
        public int getId() {
        
            return id;
        }
    
        public void setId(int id) {
        
            this.id = id;
        }
    }

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[20190628171504755.png]: /images/20211220/2f68ed402e1642b2b83d7d36c7f3cfb2.png
[20190628171520294.png]: /images/20211220/d1d5b209d6704c6595503fc41c7d68df.png
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