The package name 'json-default' at location package -jar:is already been used by

The package name 'json-default' at location package - jar:file:/D:/ProgramFiles/apache-tomcat-5.5.20/webapps/jxwpgsh/WEB-INF/lib/jsonplugin.jar!/struts-plugin.xml:8:59 is already been used by another package at location package - jar:file:/D:/ProgramFiles/apache-tomcat-5.5.20/webapps/jxwpgsh/WEB-INF/lib/jsonplugin-0%5B1%5D.32.jar!/struts-plugin.xml:8:59 - package - jar:file:/D:/ProgramFiles/apache-tomcat-5.5.20/webapps/jxwpgsh/WEB-INF/lib/jsonplugin.jar!/struts-plugin.xml:8:59

 

原因：jar包冲突