java中tomcat检测_检测Tomcat运行状态，自动重启

女爷i 2022-11-08 11:25 205阅读 0赞

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(" 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;

System.out.println(" Tomcat is stop "+ (restart ? "OK" : "ERROR"));

\} catch (Exception e) \{

e.printStackTrace();

\}\*/

public static void main(String\[\] args) \{

System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");

System.out.println("====本程序自动检测Tomcat运行状况，必要时自动重启Tomcat。====");

System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");

init\_config();

if(monitorurl.equals(""))monitorurl="http://localhost:8080/ExchangeWeb/checkTomcat/monitor.jsp";

if(tomcatroot.equals(""))tomcatroot="F://tomcat-6.0.20//";

if(!tomcatroot.endsWith("//"))tomcatroot+="//";

while (true) \{

try \{

String random="?random="+Math.random() \* 65535;//=====处理数据缓存问题======

CheckTomcat.checkTomcatIsAlive(monitorurl+random);

Thread.sleep(5000);

System.out.println("========================checking at ");

\} catch (Exception ex) \{

ex.printStackTrace();

static private void init\_config() \{

try\{

CheckTomcat me=new CheckTomcat();

String maindir=me.getClass().getResource("/").toURI().getPath();

System.out.println(">>>>>>配置文件目录："+maindir);

String sLine;

String filename=maindir+"config.xml";

BufferedReader buffReader = new BufferedReader(new FileReader(filename));

while((sLine = buffReader.readLine())!=null)

sLine = sLine.trim();

if(sLine.trim()!="" && !sLine.equals(""))\{

if(sLine.toLowerCase().startsWith("tomcatroot"))\{

int npos=sLine.indexOf("tomcatroot");

npos+="tomcatroot".length();

tomcatroot=sLine.substring(npos).trim();

if(tomcatroot.startsWith("="))tomcatroot=tomcatroot.substring(1);

else if(sLine.toLowerCase().startsWith("monitorurl"))\{

int npos=sLine.indexOf("monitorurl");

npos+="monitorurl".length();

monitorurl=sLine.substring(npos).trim();

if(monitorurl.startsWith("="))monitorurl=monitorurl.substring(1);

buffReader=null;

\}catch(Exception e)\{

e.printStackTrace();

System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");

System.out.println("====读取配置文件失败！系统无法运行，请与供应商联系。====");

System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");

System.exit(0);

再是自动重启Tomcat线程类：

import java.util.Date;

public class RunTomcat extends Thread \{

private static String tomcatroot="";

public void startTomcat(String root) \{

this.tomcatroot=root;

System.out.println(">>>>>>Tomcat即将启动。。。");

System.out.println(">>>>>>Tomcat根目录："+tomcatroot);

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");

\} catch (Exception e) \{

e.printStackTrace();

try \{

Thread.sleep(3000);//等待shutdown结束

//RunTomcat me=new RunTomcat();

//String maindir=me.getClass().getResource("/").toURI().getPath();

//java.lang.Process p = java.lang.Runtime.getRuntime().exec(maindir+"checkTomcat.bat");

java.lang.Process p = java.lang.Runtime.getRuntime().exec(tomcatroot+"bin//startup.bat");

java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(p.getInputStream()));

/\*String s;

boolean restart = false;

String t = "Server startup in";

while ((s = in.readLine()) != null) \{

System.out.println(s);

if (s.indexOf(t) != -1) \{

restart = true;

break;

\}\*/

System.out.println(">>>>>>Tomcat start at ");

\} catch (Exception e) \{

e.printStackTrace();

接着是检测tomcat是否活动monitor.jsp文件：

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

out.println("path=" + path + "  
");

out.println("basePath=" + basePath + "  
");

out.println("ok  
");

然后是config.xml配置文件：

tomcatroot=F:/tomcat-6.0.20/

monitorurl=http://localhost:8080/ExchangeWeb/checkTomcat/monitor.jsp

最后是checkTomcat.bat批处理文件：

@echo off

rem=========第一步：配置下面的JAVA\_HOME为JDK目录==========\#

@set JAVA\_HOME=C:/Program Files/Java/jdk1.6.0\_14

rem=========第二步：配置下面的CATALINA\_HOME为Tomcat目录==========\#

@set CATALINA\_HOME=F:/tomcat-6.0.20

@set PATH=%JAVA\_HOME%/bin/;

@set CLASSPATH=%JAVA\_HOME%/lib/rt.jar;%JAVA\_HOME%/lib/tools.jar;%CATALINA\_HOME%/lib/servlet-api.jar;%CATALINA\_HOME%/lib/jsp-api.jar;

java CheckTomcat

测试时，只要双击执行checkTomcat.bat文件即可。

posted on 2012-05-24 10:44 张生 阅读(8546) 评论(0)  编辑  收藏

java中tomcat检测_检测Tomcat运行状态，自动重启

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