在eclipse下做了struts一个应用出现错误。是怎么回事？
本人模仿书中的例了在eclipse下做了struts一个应用。 多次运行成功了。可是几天后再来运行就出现了以下错误。 在这期间并没有改动，这是怎么回事？ type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: BeanUtils.populate org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1254) org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) javax.servlet.http.HttpServlet.service(HttpServlet.java:709) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject.java:517) org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:275) org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161) root cause java.security.AccessControlException: access denied (java.lang.RuntimePermission accessDeclaredMembers) java.security.AccessControlContext.checkPermission(AccessControlContext.java:264) java.security.AccessController.checkPermission(AccessController.java:427) java.lang.SecurityManager.checkPermission(SecurityManager.java:532) java.lang.SecurityManager.checkMemberAccess(SecurityManager.java:1662) java.lang.Class.checkMemberAccess(Class.java:2125) java.lang.Class.getDeclaredMethods(Class.java:1762) org.apache.commons.beanutils.MappedPropertyDescriptor$1.run(MappedPropertyDescriptor.java:386) java.security.AccessController.doPrivileged(Native Method) org.apache.commons.beanutils.MappedPropertyDescriptor.getPublicDeclaredMethods(MappedPropertyDescriptor.java:383) org.apache.commons.beanutils.MappedPropertyDescriptor.internalFindMethod(MappedPropertyDescriptor.java:453) org.apache.commons.beanutils.MappedPropertyDescriptor.findMethod(MappedPropertyDescriptor.java:527) org.apache.commons.beanutils.MappedPropertyDescriptor. (MappedPropertyDescriptor.java:149) org.apache.commons.beanutils.PropertyUtils.getPropertyDescriptor(PropertyUtils.java:907) org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:934) org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808) org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252) org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) javax.servlet.http.HttpServlet.service(HttpServlet.java:709) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject.java:517) org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:275) org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.多谢关注！
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