Tomcat检测程序

import java.net.*;
import java.io.*;

public class Tomcat   extends Thread {
int listenPort=80; //要检测的端口号
String url = "";
String str="";
public void setstr(){
        str="GET / HTTP/1.0\r\n";
str+="\r\n";
str+="Accept: image/gif, image/x-xbitmap, image/jpeg, image peg, application nd.ms-powerpoint, application nd.ms-excel, application/msword, application/x-shockwave-flash, */* \r\n";
str+="Accept-Language: zh-cn \r\n";
str+="Accept-Encoding: gzip, deflate\r\n";
str+="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) \r\n";
str+="Connection: Keep-Alive \r\n";
}

  public void setListenPort(int listenPort) {
    this.listenPort = listenPort;
  }

  public int getListenPort() {
    return listenPort;
  }

  public Tomcat(String url) {
    this.url = url;
  }

  //判断是否停止监听
  boolean isStopListen = false;

  //执行一个线程，线成不断的判断tomat是否停止，如果停止，则关闭tomcat
  //然后isTomcatStop=true,sleep(60000)
  public void run() {
    while (!isStopListen) {
      if (!this.isConnectionTomcat()) {
        try {
          this.closeTomcat();
          this.sleep(10000);
          this.closeTomcat();
          this.sleep(10000);
      this.closeTomcat();
          this.sleep(10000);
          new RunTomcat();
          this.sleep(30000);
        }
        catch (Exception ex) {
          ex.printStackTrace();
        }
      }
      else {
        try {
          this.sleep(30000);
        }
        catch (InterruptedException ex1) {
          ex1.printStackTrace();
        }
      }
    }
  }

//关闭tomcat
  public void closeTomcat() throws Exception {
    Process process = Runtime.getRuntime().exec("shutdown.bat");
    BufferedReader bufferedReader = new BufferedReader(new
        InputStreamReader(process.getInputStream()));

  }

  //判断是否连接到80断口
  public boolean isConnectionTomcat() {
    Socket so = null;
setstr();
    try {
      so = new Socket("localhost", listenPort);
  so.setSoTimeout(5000);
  OutputStream out=so.getOutputStream();
  out.write(str.getBytes());
  out.flush();
  InputStream in=so.getInputStream();
      byte[] receiveByte=new byte[1000];
  int num=in.read(receiveByte);
  //System.out.println(new String(receiveByte,0,num));
  if (num<=5)throw new Exception("读取失败");
  so.close();
    }
    catch (Exception ex) {
      System.out.println("工作可能有异常"+listenPort+ex);
  try{
  this.sleep(1000);
  so = new Socket("localhost", listenPort);
  so.setSoTimeout(5000);
  OutputStream out=so.getOutputStream();
  out.write(str.getBytes());
  out.flush();
  InputStream in=so.getInputStream();
  byte[] receiveByte=new byte[1000];
  int num=in.read(receiveByte);
  if (num<=5)throw new Exception("读取失败");
  //System.out.println(new String(receiveByte,0,num));
  so.close();
  }catch(Exception e){
  System.out.println("工作出现异常!!!!!!!");
  return false;
  }
    }
    finally {
      try {
        if (so != null) {
          so.close();
        }
      }
      catch (IOException ex1) {
        ex1.printStackTrace();
      }
    }
    System.out.println("正常启动");
    return true;
  }

  //打开tomcat
  public class RunTomcat
      extends Thread {
    public RunTomcat() {
      this.start();
    }

    public void run() {
      try {
        Process process = Runtime.getRuntime().exec("startup.bat");
        BufferedReader bufferedReader = new BufferedReader(new
            InputStreamReader(process.getInputStream()));
      }
      catch (IOException ex) {
        ex.printStackTrace();
      }

    }
  }

//主线程不断循环，发现isTomcatStop=true,启动tomcat
  public static void main(String args[]) {
    if(args.length==0){
     System.out.println("命令行为：java Tomcat port -请指定监听端口" );
     return;
    }
    Tomcat s = new Tomcat("");
    try {
      s.setListenPort(Integer.parseInt(args[0]));
    }
    catch (NumberFormatException ex) {
      System.out.println("输入的第一个参数必须为端口号，端口号为tomcat服务端口号（https为：443，http为：80）。必须好必须唯一个小于65535的正整数");
    }
    s.start();
  }
}