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殺毒軟件：
殺毒軟件是每一臺電腦不可少的應用軟件之一，現在我來研究一下殺毒軟件的整個工作流程吧。。。首先要明確殺毒軟件的目的是什么，怎么樣才能實現這一目的。。。
殺毒軟件是客戶在通過掃描自己的電腦里的每一個文件，然后與殺毒軟件服務器病毒庫里的病毒相比較，如果你電腦里有和服務器中文件相同的，殺毒軟件就視為是病毒，然后有用戶選擇是否要把掃描出來的文件刪除。。。。下面是我用Java語言來實現這個功能的。。。希望對大家有所感悟?，F在說說我的具體實現的步驟吧。

服務器代碼：

package server;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;

import com.dr.bean.Virus;

public class Server {

public static List<Virus> virusList = new ArrayList<Virus>();
public static void main(String[] args) throws IOException {
  ServerSocket server = null;
  //輸出肯定使用打印流
  PrintStream out = null;
  //服務器肯定也要接收數據
  BufferedReader buf = null;
  //實例化一個服務器的監聽端
  server = new ServerSocket(8888);
  //可以用一種死循環的方式接收內容
  System.out.println("---------服務器已經啟動----------");
  Socket client = null;
  //初始化暗殺名單
  //List<Virus> virusList = getVirusList();
  while(true){
   //不斷接收內容
   client = server.accept();
   //準備好向客戶端輸入內容
   out = new PrintStream(client.getOutputStream());
   //而且客戶端要有輸入給服務器端
   buf = new BufferedReader(new InputStreamReader(client.getInputStream()));


   //接收客戶端發送過來的內容
   String str = buf.readLine();
   System.out.println("server receive data is:"+str);
   String virus = "";
   if("getVirusList".equals(str)){//組成暗殺協議,返回客戶端
    for(Virus v :virusList){
     virus += v.getName()+":";
    }
    out.println(virus);
   }

   //進行收尾工作
   out.flush();
   out.close();
   buf.close();
   client.close();
  }


}

public static List<Virus> getVirusList(){

  Virus virus = null;

  virus = new Virus();
  virus.setName("QQ.exe");
  virusList.add(virus);

  virus = new Virus();
  virus.setName("Niu.exe");
  virusList.add(virus);

  virus = new Virus();
  virus.setName("Baidu.exe");
  virusList.add(virus);

  virus = new Virus();
  virus.setName("Jinshan.exe");
  virusList.add(virus);

  return virusList;
}

}

執行結果：

客戶端代碼

package com.dr.client;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;

import com.dr.bean.Virus;

public class Client {

private String str;
private List<Virus> virusList = null;
    public Client(String str){
    this.str = str;
    virusList = new ArrayList<Virus>();
    }

public List<Virus> send() throws UnknownHostException, IOException{
  Socket client = null;
  //接收服務器信息的輸入流
  BufferedReader buf = null;
  //向服務器發送信息的輸出流
  PrintStream out = null;
  //實例化一個套接字
  client = new Socket("localhost",8888);
  //從服務器接收信息
  buf = new BufferedReader(new InputStreamReader(client.getInputStream()));
  //向服務器打印信息
  out = new PrintStream(client.getOutputStream());


  //打印出去
  out.println(this.str);
  //接收進來QQ.exe:baidu.exe:niu.exe
  String msg = buf.readLine();
  System.out.println(msg);
  String[] msgArray = msg.split(":");
  for(int i=0;i<msgArray.length;i++){
   Virus v = new Virus();
   v.setName(msgArray[i]);
   virusList.add(v);
   System.out.println(msgArray[i]);
  }

  buf.close();
  out.flush();
  out.close();
  client.close();

  return virusList;
}
}

文件掃描過程代碼類::：

package com.dr.client;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;

import com.dr.bean.Virus;

public class Client {

private String str;
private List<Virus> virusList = null;
    public Client(String str){
    this.str = str;
    virusList = new ArrayList<Virus>();
    }

public List<Virus> send() throws UnknownHostException, IOException{
  Socket client = null;
  //接收服務器信息的輸入流
  BufferedReader buf = null;
  //向服務器發送信息的輸出流
  PrintStream out = null;
  //實例化一個套接字
  client = new Socket("localhost",8888);
  //從服務器接收信息
  buf = new BufferedReader(new InputStreamReader(client.getInputStream()));
  //向服務器打印信息
  out = new PrintStream(client.getOutputStream());


  //打印出去
  out.println(this.str);
  //接收進來QQ.exe:baidu.exe:niu.exe
  String msg = buf.readLine();
  System.out.println(msg);
  String[] msgArray = msg.split(":");
  for(int i=0;i<msgArray.length;i++){
   Virus v = new Virus();
   v.setName(msgArray[i]);
   virusList.add(v);
   System.out.println(msgArray[i]);
  }

  buf.close();
  out.flush();
  out.close();
  client.close();

  return virusList;
}
}

KillVirusUI代碼：

package com.dr.ui;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.dr.file.FileList;

public class KillVirusUI {

public static String filePath = "";
public static List<String> virusFilePath = new ArrayList<String>();
public static void main(String args[]) {
  Display display = new Display();
  final Shell shell = new Shell(display, SWT.SHELL_TRIM);
  shell.setBounds(2, 2, 1200, 600);
  //shell.setMaximized(true);// 全屏顯示
  shell.setText("殺毒軟件簡單版");
  /**
   * 設置執行按鈕
   */
  final Button btnOk = new Button(shell, SWT.PUSH);
  btnOk.setBounds(20, 25, 70, 25);
  btnOk.setText("掃描殺毒");
  final Button btnOk1 = new Button(shell, SWT.PUSH);
  btnOk1.setBounds(120, 25, 70, 25);
  btnOk1.setText("刪除病毒");

   Color color = new Color(Display.getCurrent(), 100, 180, 10);// 聲明顏色對象
   Color color1 = new Color(Display.getCurrent(), 100, 220, 240);// 聲明顏色對象
  final Text text = new Text(shell, SWT.MULTI | SWT.BORDER);
  text.setBounds(10, 270, 1200, 400);
  text.setBackground(color1);
  final Text text1 = new Text(shell, SWT.MULTI | SWT.BORDER);
  text1.setBounds(10, 150, 1200, 50);
  text1.setBackground(color1);

  final ProgressBar progressBar = new ProgressBar(shell, SWT.HORIZONTAL);
  GridData data = new GridData();
  data.horizontalSpan = 2;
  data.grabExcessHorizontalSpace = true;
  progressBar.setLayoutData(data);
  progressBar.setMaximum(100);// 設置最大值
  progressBar.setMinimum(0);// 設置最小值
  /**
   * 注冊點擊事件，循環顯示數據
   */

  Label labe=new Label(shell,SWT.NULL);
     labe.setBounds(800,25, 120,75); // 設置按鈕位置
     labe.setFont(new Font(display,"宋體",20,SWT.BOLD));


     labe.setBackground( color);
  labe.setText("    "+"360"+"\n"+"網絡保鏢");
  ;
  btnOk.addSelectionListener(new SelectionAdapter() {//Button監聽事件
   public void widgetSelected(SelectionEvent e) {
    FileList f = new FileList();
    DirectoryDialog dlg = new DirectoryDialog(shell);
    dlg.setText("目錄"); // 設置窗口標題
    dlg.setMessage("請選擇一個目錄："); // 設置提示文字
    dlg.setFilterPath("/root"); // 設置初始目錄
    String dir = dlg.open(); // 打開對話框并返回一個包含所選目錄路徑的字符串

    //File f=new File(dlg.open());
       f.setStr(dir);

    if (f != null)
     System.out.println(f); // 比如選擇“我的文檔”，則會打印“D:\My Documents”


    Thread t = new Thread(f);
    t.setDaemon(true);
    t.start();
    t.yield();

    for(int i=0;i<100;i++){
     text.append(filePath+"\n");
     progressBar.setBounds(10, 80, 1200, 20);
     progressBar.setSelection(progressBar.getSelection()+1);//顯示一條數據，滾動條進度加1
     try {
      Thread.sleep(1000);
     } catch (InterruptedException e1) {
      e1.printStackTrace();
     }
    }

    if(virusFilePath.size()!=0){
     text.setText("");
     for(String str : virusFilePath){
      text1.append("很悲劇：你的電腦里發現病毒:"+str+"\n");
     }
    }
    else{
     text1.setText("恭喜你，沒有發現病毒!");
    }
    t.interrupt();

   }

  });


  btnOk1.addSelectionListener(new SelectionAdapter() {//Button監聽事件
   public void widgetSelected(SelectionEvent e) {
    FileList q = new FileList();
    Thread t = new Thread(q);
    t.setDaemon(true);
    t.start();
    for(int i=0;i<100;i++){
     text.append(filePath+"\n");
     progressBar.setBounds(10, 105, 1200, 20);
     progressBar.setSelection(progressBar.getSelection()+1);//顯示一條數據，滾動條進度加1
     try {
      Thread.sleep(100);
     } catch (InterruptedException e1) {
      e1.printStackTrace();
     }
    }

    if(virusFilePath.size()!=0){
     text.setText("");
     for(String str : virusFilePath){
      //text1.append("發現病毒:"+str+"\n");

         File f1=new File("f.filePath");
      f1.delete();
      text1.append("恭喜你已經成功清理了電腦里的病毒："+str+"\n");
     }
    }
    else{
     text1.setText("祝賀你不用為電腦安?？紤]了!");
    }
   }
   });


  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  display.dispose();
}
}