第四次过程性考核

码云地址：https://gitee.com/QM0829/16012112_dreams_examination_iv/tree/master

使用套接写连接编写一个简单的聊天室程序，客户端主函数放在Client_Main.java文件中，服务器端主函数放在Server_Main.java文件中

要求： 

• 1.客户端从控制台进行输入，并将自己的输出内容和时间保存到数据库的“client_学号”表中
• 2.服务器端读取到客户端的程序后，从控制台进行输入给客户端以回应，并将客户端的输入内容与服务端的输出内容、时间保存到数据库的表中
• 3.要求服务器端可以实现同时与多个客户端进行通信，与每一个客户端通信的内容，保存为一个"ip_学号"的表
• 4.提交文件结果包括：代码，数据库导出为.sql文件

客户端：

Client_Main.java

import java.net.*;
import java.util.*;
public class Client_Main {
    public static void main(String args[]){
        Scanner scanner=new Scanner(System.in);
        Thread readData;
        ReceiveLetterForClient receiver=new ReceiveLetterForClient();
        try{
            readData=new Thread(receiver);
            readData.start();
            byte [] buffer=new byte[1];
            InetAddress address =InetAddress.getByName("127.0.0.1");
            DatagramPacket dataPack=new DatagramPacket(buffer,buffer.length,address,666);
            DatagramSocket postman=new DatagramSocket();
            System.out.print("输入消息:");
            while(scanner.hasNext()){
                String mess=scanner.nextLine();
                buffer=mess.getBytes();
                if(mess.length()==0)
                    System.exit(0);
                buffer=mess.getBytes();
                dataPack.setData(buffer);
                postman.send(dataPack);
                System.out.print("继续输入：");
            }
        }
        catch(Exception e){
            System.out.println(e);
        }
    }
}

服务器端：

Server_Main.java

import java.net.*;
import java.util.*;
public class Server_Main {
    public static void main(String args[]){
        Scanner scanner=new Scanner(System.in);
        Thread readData;
        ReceiveLetterForServer receiver=new ReceiveLetterForServer();
        try{
            readData=new Thread(receiver);
            readData.start();
            byte [] buffer=new byte[1];
            InetAddress address =InetAddress.getByName("127.0.0.1");
            DatagramPacket dataPack=new DatagramPacket(buffer,buffer.length,address,888);
            DatagramSocket postman=new DatagramSocket();
            System.out.print("输入消息:");
            while(scanner.hasNext()){
                String mess=scanner.nextLine();
                buffer=mess.getBytes();
                if(mess.length()==0)
                    System.exit(0);
                buffer=mess.getBytes();
                dataPack.setData(buffer);
                postman.send(dataPack);
                System.out.print("继续输入：");
            }
        }
        catch(Exception e){
            System.out.println(e);
        }
    }
}

ReceiveLetterForClient.java

import java.net.*;
public class ReceiveLetterForClient implements Runnable{
    public void run(){
        DatagramPacket pack=null;
        DatagramSocket postman=null;
        byte data[] =new byte[8192];
        try{
            pack=new DatagramPacket(data,data.length);
            postman=new DatagramSocket(888);
        }
        catch(Exception e){}
        while(true){
            if(postman==null) break;
            else
                try{
                    postman.receive(pack);
                    String message=new String(pack.getData(),0,pack.getLength());
                    System.out.print("收到："+message);
                }
                catch(Exception e){}
            }
        }
    }

ReceiveLetterForServer.java

import java.net.*;
public class ReceiveLetterForServer implements Runnable{
    public void run(){
        DatagramPacket pack=null;
        DatagramSocket postman=null;
        byte data[] =new byte[8192];
        try{
            pack=new DatagramPacket(data,data.length);
            postman=new DatagramSocket(666);
        }
        catch(Exception e){}
        while(true){
            if(postman==null) break;
            else
                try{
                    postman.receive(pack);
                    String message=new String(pack.getData(),0,pack.getLength());
                    System.out.print("收到："+message);
                }
                catch(Exception e){}
            }
        }
    }

 

数据库

import java.sql.*;
public class GetDBConnection {
    public static Connection connectDB(String DBName,String id,String p){
        Connection con =null;
        String uri="jdbc:mysql://localhost:3306/"+DBName+"?useSSL=true&characterEncoding=utf-8";
        try{
            Class.forName("com.mysql.jdbc.Driver");    
        }
        catch(Exception e){}
        try{
            con=DriverManager.getConnection(uri,id,p);
        }
        catch(SQLException e) {}
        return con;
    }

}