java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor 访问jsp报错-过滤器报错

java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor 访问jsp报错 过滤器异常

07:16:33,911 ERROR CharsetEncoding:38 - java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor 	at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522) 	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:356) 	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) 	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 	at com.****.CharsetEncoding.doFilter(CharsetEncoding.java:30) 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) 	at java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor 	at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:52)

解决方案1：
当项目中引用tomcat目录下面的lib下面的catalina.jar的时候，用myeclipse将项目部署到tomcat下面的时候，会将catalina.jar包加到项目的web-inf下面的lib文件夹下面，这样这个包就会和tomcat下面的lib下面的catalina.jar包冲突会报java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor错误，解决方法是将项目部署到tomcat下面后，将项目的web-inf/lib下面的catalina.jar删掉，然后在重启tomcat，ok。

方案2：
修改了tomcat里的context.xml文件，在context 元素下添加
<Context>
<Loader delegate="true" />

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