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。

巴特西

团队冲刺DAY6

团队冲刺DAY6

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