第四次过程性考核
2018-12-13 15:47 wxl! 阅读(165) 评论(2) 编辑 收藏 举报- 实训要求:
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
原理:基于TCP的单线程通信任务的基础上,换成UDP多线程的.
观点:单线程是基于IP地址,所以是唯一的。问了同学,知道了多线程应该基于端口
https://gitee.com/wxl19981225/fourth_process_assessment/tree/master
client:
import java.net.*; import java.util.*; public class Client_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,666); DatagramSocket postman=new DatagramSocket(); System.out.print("请输入给服务器发送到消息:"); 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("继续输入发给服务器的消息:"); } } catch(Exception e){ System.out.println("服务器已断开"+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(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.printf("%25s\n","收到:"+message); } catch(Exception e){} } } } }
server:
import java.net.*; import java.util.*; import java.sql.*; public class Server_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,888); DatagramSocket postman=new DatagramSocket(); System.out.print("请输入给客户端发送到消息:"); 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("继续输入发给客户端的消息:"); } } catch(Exception e){ System.out.println("客户端已断开"+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(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.printf("%25s\n","收到:"+message); } catch(Exception e){} } } } }
数据库连接:
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(""); } catch(Exception e){} try{ con=DriverManager.getConnection(uri,id,p); } catch(SQLException e){} return con; } }
运行结果:
总结:
本节课知识点掌握情况非常不好,无法正确掌握并运用。题做的也不完善,课后复习不够,我努力完善,想要做到更好,结果却差强人意。只能完成一个客户端和一个服务器进行通信。总的来说不能将知识点正确整合在一起,和书上
代码大致一样,我知道这次实验做的非常不好,我会反思我自己。希望以后查漏补缺,做得更好一点!
学习内容 | 代码行数 | 博客字数 |
第四次过程性考核 | 200 | 200 |