检测Tomcat运行状态-自动重启

检测Tomcat运行状态，自动重启

http://blog.csdn.net/huangjl2000w/article/details/6338997

先是主程序：


import java.io.BufferedReader;
import java.io.FileReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;

public class CheckTomcat {
 private static String tomcatroot="";
 private static String monitorurl="";
 private static void checkTomcatIsAlive(String myurl) throws NullPointerException {
  String s;
  boolean isTomcatAlive = false;
  java.io.BufferedReader in;
  try {
   System.out.println(">>>>>>检测URL："+myurl);
   URL url = new URL(myurl);
   URLConnection con = url.openConnection();
   in = new java.io.BufferedReader(new java.io.InputStreamReader(con.getInputStream()));
   con.setConnectTimeout(1000);
   con.setReadTimeout(4000);
   while ((s = in.readLine()) != null) {
    if (s.length() > 0) {// 如果能够读取到页面则证明可用，tomcat正常，否则继续后面的重启tomcat操作。
     return;

     }
    }
   in.close();
  }catch (Exception ex) {
   //ex.printStackTrace();
   System.out.println("*************该URL有误或不可访问！");
  }
  
  /*if (isTomcatAlive) {
   System.out.println("<" + new Date()+ "> Tomcat is alive but not response!");
   stopTomcat();
  }*/
  RunTomcat runt=new RunTomcat();
  runt.startTomcat(tomcatroot);
 }
 
 /*public static void stopTomcat() {
  try {
   //java.lang.Process p = java.lang.Runtime.getRuntime().exec("net stop /"Apache Tomcat/"");
   java.lang.Process p = java.lang.Runtime.getRuntime().exec(tomcatroot+"bin//shutdown.bat");
   java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(p.getInputStream()));
   String s;
   String t = "Using JRE_HOME";
   boolean restart = false;
   while ((s = in.readLine()) != null) {
    if (s.indexOf(t) != -1) {
     restart = true;
     break;
    }
   }