解決方法:
先看Tomcat的startup.bat，它調用了catalina.bat,而catalina.bat則調用了setclasspath.bat。只要在setclasspath.bat的開頭聲明環境變量.像我這樣 ： 加上紅色的兩句就OK拉 (當然了JAVA_HOME的路徑 請填寫你自己的)
rem —————————————————————————
rem Set CLASSPATH and Java options
rem
rem $Id: setclasspath.bat 795032 2009-07-17 10:41:20Z markt $
rem —————————————————————————
set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_10
set JRE_HOME=C:\Program Files\Java\jdk1.6.0_10\jre
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