Tomcat 为什么运行startup.bat是出现：neither the java-home nor jre-hom

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：rem ---------------------------------------------------------------------------rem Set CLASSPATH and Java optionsremrem $Id:setclasspath。bat 505241 2007-02-09 10:22:58Z jfclere $rem ---------------------------------------------------------------------------set JAVA_HOME=D:\Java\jdk1。6。0_11set JRE_HOME=D:\Java\jre6rem Make sure prerequisite environment variables are setif not "%JAVA_HOME%" == "" goto gotJdkHomeif not "%JRE_HOME%" == "" goto gotJreHomeecho Neither the JAVA_HOME nor the JRE_HOME environment variable is definedecho At least one of these environment variable is needed to run this programgoto exit。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。