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Neither the JAVA_HOME nor the JRE_HOME错误解决
Tomcat安装配置:
双击安装到c盘后。
跑到C:\apache-tomcat-7.0.26\bin看到一个startup.bat就去执行,结果提示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。好,再去下载个最新版本的JDK,Install完成之后却还是提示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。搞得对Tomcat的学习热情冷了一半。
原因是后来较新版本的JDK(例如我使用的JDK1.7)安装完不会自动登记环境变量JAVA_HOME,JRE_HOME。像我在单位的环境,我的用户是受限制的(PowerUser),不方便设环境变量,于是我就找到了另外一个方法。
先看Tomcat的startup.bat,它调用了catalina.bat,而catalina.bat则调用了setclasspath.bat。只要在setclasspath.bat的开头声明环境变量,如我的就是: 用记事本打开setclasspath.bat
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/jdk1.7.0_02
set JRE_HOME=C:/Program Files/Java/jre7
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
......
/**增加了 红色的两行代码****/
这样在每次运行startup.bat时就注册了JAVA_HOME,JRE_HOME。控制台窗口关闭后,这两个变量也将消失,不会再占用内存。运行一下,最终提示“信息:Server startup in xxxxx ms”就大功告成了。
Neither the JAVA_HOME nor the JRE_HOME错误解决