团队冲刺DAY6

团队冲刺DAY6

今天的内容是无图形界面的客户端和服务器的加密解密系统。

通信时用的socket方法，内置的密钥，端口，ip地址.

客户端：

import java.io.*;
import java.net.*;
import java.nio.charset.Charset;
import java.util.*;
public class Client  {
    private static final String  SKEY    = "abcdefgh";
    private static final Charset CHARSET = Charset.forName("gb2312");
    public static void main(String args[]) {
        Scanner scanner = new Scanner(System.in);
        Socket mysocket=null;
        DataInputStream in=null;
        DataOutputStream out=null;
        Thread readData ;
        Read read=null;
        try{  mysocket=new Socket();
            read = new Read();
            readData = new Thread(read);
            String IP = "127.0.0.1";
            int port = 2010;
            if(mysocket.isConnected()){}
            else{
                InetAddress  address=InetAddress.getByName(IP);
                InetSocketAddress socketAddress=new InetSocketAddress(address,port);
                mysocket.connect(socketAddress);
                in =new DataInputStream(mysocket.getInputStream());
                out = new DataOutputStream(mysocket.getOutputStream());
                read.setDataInputStream(in);
                readData.start();
            }
        }
        catch(Exception e) {
            System.out.println("服务器已断开"+e);
        }
        System.out.println("已经成功连接服务器，开始通讯！");
        System.out.print("输入:");
        while(scanner.hasNext()) {
                 Macq S = new Macq();
                String s = "";
                String st = "";
            try {
                s = scanner.nextLine();
            }
            catch(InputMismatchException exp){
                System.exit(0);
            }
            if(s.equals("end!")){
                System.exit(0);
            }
            s = DesUtil.encrypt(s, CHARSET, SKEY);
            st = S.mac(s);
            try {
                out.writeUTF(s);
                out.writeUTF(st);
            }
            catch(Exception e) {}
        }
    }
}

服务器：

import java.io.*;
import java.nio.charset.Charset;

public class Read implements Runnable {
    private static final String  SKEY    = "abcdefgh";
    private static final Charset CHARSET = Charset.forName("gb2312");
    DataInputStream in;
    public void setDataInputStream(DataInputStream in) {
        this.in = in;
    }
    @Override
    public void run() {
        Macq S = new Macq();
        String s = "";
        String mactext = "";
        String mactest = "";
        while(true) {
            try{
                s = in.readUTF();
                mactext = in.readUTF();
                System.out.println("服务器回复:"+s);
                System.out.println("接收到的mac:"+mactext);
                try{
                    mactest =S.mac(s);
                    System.out.println("本地检验的mac:"+mactext);
                    if(mactest.equals(mactext)==true){
                        throw new java.io.IOException("没有通过mac检验");
                    }
                }catch (Exception e2){
                    e2.printStackTrace();
                }
                try {
                    s = DesUtil.decrypt(s, CHARSET, SKEY);
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
                System.out.println("解密为:"+s);
                System.out.print("输入:");
            }
            catch(IOException e) {
                System.out.println("与服务器已断开!"+e);
                break;
            }
        }
    }
}

因为不是最终稿，所以并没有用更难组合的用两个线程的客户端和服务器的DAY1代码，而是用的书上的例子，来增加部分代码的方法先练练手。