The class required by Guvnor, org.apache.commons.lang.StringUtils, doesn't exist in 3-3.1.<br><br>It has been renamed org.apache.commons.lang3.StringUtils in 3-3.1.<br><br><div class="gmail_quote">On 11 July 2012 12:15, chrisLi <span dir="ltr"><<a href="mailto:shengtao0077@163.com" target="_blank">shengtao0077@163.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi, All<br>
<br>
I am using Guvnor 5.4.0 Final with Tomcat 6.0.35. And I wanted to replace<br>
commons-lang2.4 with commons-<br>
<br>
lang3-3.1, so I overwrote the commons-lang2.4 jar file in Guvnor's<br>
WEB-INF/lib directory with commons-<br>
<br>
lang3-3.1.jar. However an error like follows occured:<br>
<br>
Service method 'public abstract long<br>
org.drools.guvnor.client.rpc.AssetService.getAssetCount(org.drools.guvnor.client.rpc.AssetPageRequest)<br>
throws com.google.gwt.user.client.rpc.SerializationException' threw an<br>
unexpected exception: java.lang.NoClassDefFoundError:<br>
org/apache/commons/lang/StringUtils org/apache/commons/lang/StringUtils<br>
<br>
I have restarted Guvnor.<br>
<br>
Any suggestion will be appreciated, thank you very much.<br>
<br>
<br>
<br>
--<br>
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</blockquote></div><br>