hi, I'm new to struts and I really can't find a way to solve the proplem.
plese help me. thank you so much.
Here is the proplem. I have a input.jsp,a ActionForm and a Action
public class HelloForm extends ActionForm
{
private String name=null;
public ActionErrors validate(ActionMapping map,HttpServletRequest req)
{
ActionErrors err=new ActionErrors();
if(name.length()<1||name==null)
err.add("nouser" ,new ActionMessage("jsp.no.user"));
return err;
}
when name!=null &&name.lengh>1 ,everything is normal ,the Action goto the jsp
page I expect
but when (name.length()<1|| name==null) is true,I think it should go to the
input.jsp,and use <html:errors> to display the AcionMessage("jsp.no.user")
..But the proplem comes out:
java.lang.ClassCastException
org.apache.struts.taglib.html.ErrorsTag.doStartTag(ErrorsTag.java:215)
org.apache.jsp.input_jsp._jspx_meth_html_errors_0(input_jsp.java:349)
org.apache.jsp.input_jsp._jspx_meth_html_html_0(input_jsp.java:133)
org.apache.jsp.input_jsp._jspService(input_jsp.java:87)
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:1069)
org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:980)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
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)please help me~
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