使用displaytag lib java.lang.NoClassDefFoundError时获取:org/apache/commons/lang/UnhandledException [英] Getting while using displaytag lib java.lang.NoClassDefFoundError: org/apache/commons/lang/UnhandledException

问题描述

在使用displaytag-1.2 jar时获得以下异常.我在WEB-INF/lib文件夹中具有所有必需的库.

Getting the following exception in using displaytag-1.2 jar. I have all the necessary library in WEB-INF/lib folder.

javax.servlet.ServletException:java.lang.NoClassDefFoundError: 
org/apache    commons/lang   /UnhandledException 
org.apache.catalina.core.ApplicationDispatcher invoke SEVERE: Servlet.service() for
servlet jsp threw exception
java.lang.ClassNotFoundException: org.apache.commons.lang.UnhandledException
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at java.beans.Introspector.instantiate(Unknown Source)
at java.beans.Introspector.findExplicitBeanInfo(Unknown Source)
at java.beans.Introspector.<init>(Unknown Source)
at java.beans.Introspector.getBeanInfo(Unknown Source)
at org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3909)
at or

推荐答案

我遇到了同样的问题. DisplayTag似乎与commons-lang-3x不兼容.使用commons lang 2.6应该可以解决此问题.

I had the same issue. DisplayTag seems to be incompatible with commons-lang-3x. Using commons lang 2.6 should fix the problem.

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