之前做的网页还好好的，现在再来看的操作的时候就出现这种错误了。
请问是为何？
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Exception creating bean of class org.apache.struts.action.DynaActionForm: {1}
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.backindex.mfiles.filesadd_jsp._jspService(filesadd_jsp.java:125)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.wxy.base.Encoding.doFilter(Encoding.java:25)
root cause
javax.servlet.jsp.JspException: Exception creating bean of class org.apache.struts.action.DynaActionForm: {1}
org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:487)
org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:457)
org.apache.jsp.backindex.mfiles.filesadd_jsp._jspx_meth_html_form_0(filesadd_jsp.java:142)
org.apache.jsp.backindex.mfiles.filesadd_jsp._jspService(filesadd_jsp.java:114)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.wxy.base.Encoding.doFilter(Encoding.java:25)
结果是因为Form类没有找到的原因
检查下struts-config.xml里form和form类名是否一致
如果不一致的话就会发生以上错误的！
把form-bean里面的type写错了的话 就会报这个错误！
[quote]com.wxy.base.Encoding.doFilter(Encoding.java:25) [/quote]
出题处在这里，而不是那里
com.wxy.base.Encoding.doFilter(Encoding.java:25)
看看是什么内容。。。
25是哪一行？？
[quote]javax.servlet.jsp.JspException: Exception creating bean of class org.apache.struts.action.DynaActionForm: {1}
[/quote]
Form类没有找到
检查下struts-config.xml或者struts.xml里form和form类名是否一致
[quote]把form-bean里面的type写错了的话 就会报这个错误！ [/quote]
http://lucky16.iteye.com/blog/444596
[b][color=blue]
应该是struts的配置文件写错了[/color][/b]