Requirements
JUEL requires Java 5 or later.
加入juel.jar
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I think I get same problem when trying to integrate JBPM4 into my app. And I find out why.
Because you're using Tomcat 6.0... The lib el-api.jar in %tomcat_home%/lib conflicts with juel.jar, which exists in %jbpm4_home%/lib.
juel: <http://juel.sourceforge.net/> You will find the 2 jars define the same api for javax/el/ExressionFactory.
The solution is that you use Tomcat 5.5 instead of Tomcat 6.0. Because tomcat 5.5 uses commons-el.jar (Tomcat5.5/common/lib)
Or you can still use Tomcat 6.0, but you must replace el-api.jar with juel.jar. And don't forget to remove juel.jar from your app lib(A duplicate import, if you don't remove).
Try it!
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解決：刪掉tomcat6的el.jar，加入juel.jar,juel-impl.jar,juel-engine.jar
posted on 2010-07-21 17:40
jadmin 閱讀(1457)
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