tomcat无法启动

在win7上明明已经安装了JDK1.6并设置好了JAVA_HOME，可偏偏Tomcat在启动过程中找不到。

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

:gotJreHome if not exist "%JRE_HOME%\bin\java.exe" goto noJavaHome if not exist "%JRE_HOME%\bin\javaw.exe" goto noJavaHome if not ""%1"" == ""debug"" goto okJavaHome echo JAVA_HOME should point to a JDK in order to run in debug mode. goto exit

:gotJdkHome if not exist "%JAVA_HOME%\bin\java.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\javaw.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\jdb.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\javac.exe" goto noJavaHome if not "%JRE_HOME%" == "" goto okJavaHome set JRE_HOME=%JAVA_HOME% goto okJavaHome

:noJavaHome echo The JAVA_HOME environment variable is not defined correctly echo This environment variable is needed to run this program echo NB: JAVA_HOME should point to a JDK not a JRE goto exit :okJavaHome

if not "�SEDIR%" == "" goto gotBasedir echo The BASEDIR environment variable is not defined echo This environment variable is needed to run this program goto exit :gotBasedir if exist "�SEDIR%\bin\setclasspath.bat" goto okBasedir echo The BASEDIR environment variable is not defined correctly echo This environment variable is needed to run this program goto exit :okBasedir

rem Set the default -Djava.endorsed.dirs argument set JAVA_ENDORSED_DIRS=�SEDIR%\endorsed

rem Set standard CLASSPATH rem Note that there are no quotes as we do not want to introduce random rem quotes into the CLASSPATH if not exist "%JAVA_HOME%\bin\tools.jar" goto noJavac set CLASSPATH=%JAVA_HOME%\lib\tools.jar :noJavac

rem Set standard command for invoking Java. rem Note that NT requires a window name argument when using start. rem Also note the quoting as JAVA_HOME may contain spaces. set _RUNJAVA="%JRE_HOME%\bin\java" set _RUNJAVAW="%JRE_HOME%\bin\javaw" set _RUNJDB="%JAVA_HOME%\bin\jdb" set _RUNJAVAC="%JAVA_HOME%\bin\javac"

goto end

:exit exit /b 1

:end

 

3、重启tomcat，敲入http://localhost:8080验证，问题解决。

 

 

tomcat5需要jdk1.6做支撑，jdk1.5不能够。