tomcat一闪而过无法启动

报错信息如下：Neither the JAVA_HOME nor the JRE_HOME environment variable is defined At least one of these environment variable is needed to run this program;提示找不到java_home各jre_home路径，何解？

   原因不知道了，下面来看解决办法：

   1、分析startup.bat启动脚本：发现其调用了catalina.bat,而catalina.bat调用了setclasspath.bat

   2、在setclasspath.bat的头部定义了JAVA_HOME和JRE_HOME的值，那么在这里手动设置JAVA_HOME变量

rem ---------------------------------------------------------------------------

rem Set CLASSPATH and Java options

rem

rem $Id: setclasspath.bat 505241 2007-02-09 10:22:58Z jfclere $

rem ---------------------------------------------------------------------------



set JAVA_HOME=C:\Program Files\Java\jdk1.5.0_05

set JRE_HOME=C:\Program Files\Java\jre1.5.0_05



rem Make sure prerequisite environment variables are set

if not "%JAVA_HOME%" == "" goto gotJdkHome

if not "%JRE_HOME%" == "" goto gotJreHome

echo Neither the JAVA_HOME nor the JRE_HOME environment variable is defined

echo At least one of these environment variable is needed to run this program

goto exit

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