windows下直接點擊startup.bat啟動tomcat服務示例代碼
2020-06-09 13:55:20
供稿：網友
在XP上明明已經安裝了JDK1.5并設置好了JAVA_HOME,可偏偏Tomcat在啟動過程中找不到。
報錯信息如下：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路徑，何解?
原因不知道了，下面來看解決辦法：
1、分析startup.bat啟動腳本：發現其調用了catalina.bat,而catalina.bat調用了setclasspath.bat
2、在setclasspath.bat的頭部定義了JAVA_HOME和JRE_HOME的值，那么在這里手動設置JAVA_HOME變量
代碼如下:
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.
