关于MyEclipse 6.0.0 GA开发SSH应用错误的解决方法
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今天在用MyEclipse 6.0.0 GA开发SSH应用中，碰到下面这样的错误
java.lang.SecurityException: class "org.apache.commons.collections.SequencedHashMap"'s signer information does not match signer information of other classes in the same package?
下面是错误信息
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java.lang.SecurityException: class "org.apache.commons.collections.SequencedHashMap"'s signer information does not match signer information of other classes in the same package at java.lang.ClassLoader.checkCerts(Unknown Source) at java.lang.ClassLoader.preDefineClass(Unknown Source) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at org.hibernate.mapping.Table.(Table.java:32) at org.hibernate.cfg.Mappings.addTable(Mappings.java:120) at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:251) at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:236) at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:152) at org.hibernate.cfg.Configuration.add(Configuration.java:362) at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:400) at org.hibernate.cfg.Configuration.addResource(Configuration.java:449) at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1263) at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1235) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1217) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1184) at org.hibernate.cfg.Configuration.configure(Configuration.java:1112) at com.chinafi.hibernate.SessionFactory.(SessionFactory.java:30) at com.chinafi.hibernate.BaseDAO.getSession(BaseDAO.java:13) at com.chinafi.node.NodeAccessDAO.save(NodeAccessDAO.java:25) at com.chinafi.node.NodeAccessAction.execute(NodeAccessAction.java:47) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source)
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网上找了各种方案都没有解决，分析是MyEclipse 6.0.0版本中jar包的问题
于是换成MyEclipse 5.5测试，没有问题，换成MyEclipse 6.0.1测试，通过，OK
解决办法：
1.更换MyEclipse 6.0.1及以上版本， MyEclipse 6.0.0有问题 (http://jerryqiu007.iteye.com/admin/blogs/251432?下载地址)
2.下载下面的jar包，复制到WEB-INF/lib下面，重新启动tomcat, 搞定：）
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