I really don't know how to explain things any more clearly. I suggest you buy a Struts book, and check out the documentation for the tag libraries on the Struts web site. Your bean:define tags make absolutely no sense. Please read the following:
http://jakarta.apache.org/struts/userGuide/struts-bean.html#define In particular: The corresponding value to which this new attribute (and scripting variable) is set are specified via use of exactly *one* of the following approaches (trying to use more than one will result in a JspException being thrown): Specify a name attribute (plus optional property and scope attributes) - The created attribute and scripting variable will be of the type of the retrieved JavaBean property, unless it is a Java primitive type, in which case it will be wrapped in the appropriate wrapper class (i.e. int is wrapped by java.lang.Integer). Specify a value attribute - The created attribute and scripting variable will be of type java.lang.String, set to the value of this attribute. Specify nested body content - The created attribute and scripting variable will be of type java.lang.String, set to the value of the nested body content. -- Your bean:define tags are performing both 1 and 2 and hence, according to the doc, a JspException should be thrown. As I also mentioned, they seem to make no semantic sense for the context you provided in your e-mail. Why are you creating scripting variables via bean:define? What is the purpose of this step? -Steve -----Original Message----- From: Vance Heredia [mailto:[EMAIL PROTECTED] Sent: Friday, August 08, 2003 12:01 AM To: 'Struts Users Mailing List' Subject: RE: Bean tag help Huh ???? Sorry but you've lost me completely ... Maybe I should have explained that I've never programmed struts before and that I've been assigned to fix up the work of a person who has left the project, and while I've understood, overcome and finished most of the concepts and problems this particular one completely stumps me. I should also point out that all exmples of <beans:* usage from the web do not appear to work on and have the same error. Even the exmaples from Apache. Cheers Vance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vance Heredia Java Wireless Architect Global Applications Lonely Planet Publications Email: [EMAIL PROTECTED] Phone: +61 3 8379 8000 http://www.lonelyplanet.com/ http://mobile.lonelyplanet.com/ http://wap.lonelyplanet.com/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > -----Original Message----- > From: Steve Armstrong [mailto:[EMAIL PROTECTED] > Sent: Friday, 8 August 2003 1:01 PM > To: Struts Users Mailing List > Subject: RE: Bean tag help > > > Howdy, > > There are a number of things that are incorrect in your example: > > 1. Concerning your definition: > > <bean:define id="processName" name="filesForm" > property="processName" value = "filesForm" type="java.lang.Object" /> > > You can set the value of your scripting variable > "processName" from a bean, a property of a bean, or a > "hard-coded" value. I believe you are trying to set your > scripting variable from the "processName" property of a bean > named "filesForm" (i.e., filesForm.getProcessName()). > However, you also specify a value attribute which probably > overrides this (I'd have to look at the source code for the > tag to see how it is actually resolving this ambiguity) which > would set your scripting variable "processName" to the String > "filesForm". This is probably not what you want. > > 2. I believe that as soon as you use the value attribute, > the scripting variable will automatically be set to > java.lang.String and your value for the type attribute is > promptly ignored. Once again, I'd have to look at the source > for the tag to be 100% sure. Anyway, you have to set the > type attribute correctly if you're getting the value from a > bean or the property of a bean, otherwise the type is > java.lang.Object by default. So, if your getter for > processName returns a String, specify that the type of the > define is java.lang.String. > > 3. There is no need to create a scripting variable as above > to be able to do <html:hidden property="processName"/>. This > is saying that you want to create an HTML form input tag of > type hidden with the value of the named property associated > with the form bean that is associated with your action. I > assume that "filesForm" is the bean associated with your > action, and it has a property named "processName". If this > is a request scope form bean, and the value of "processName" > isn't editable (i.e., it isn't used in a text field on your > form), and you want its original value to be set in your form > bean when the form is submitted, then the html:hidden tag is > all you need. Your bean:define is trying to set a scripting > variable with the same name (and value) as your form bean > property and has nothing to do with the task you're trying to > accomplish (I believe). > > Cheers, > -Steve > > -----Original Message----- > From: Vance Heredia [mailto:[EMAIL PROTECTED] > Sent: Thursday, August 07, 2003 8:33 PM > To: 'Struts Users Mailing List' > Subject: RE: Bean tag help > > > > Hmmmmm > > Why do I need a bean name and type in struts-conifg. > > The JSP I'm running is a basic page all it does is user the > bean tag eg: > > <snippet> > > <%@ page language="java" import="java.net.URLEncoder" > contentType="text/html;charset=utf-8" %> <%@ taglib > uri="/WEB-INF/struts-bean.tld" prefix="bean" %> <%@ taglib > uri="/WEB-INF/struts-html.tld" prefix="html" %> <%@ taglib > uri="/WEB-INF/struts-logic.tld" prefix="logic" %> <%@ taglib > uri="/WEB-INF/controls.tld" prefix="controls" %> > > <html:html locale="true"> > > body bgcolor="white" background="/images/PaperTexture.gif"> > > <!--Form --> > > <html:errors/> > > <html:form method="POST" action="/files"> > <bean:define id="processName" name="filesForm" > property="processName" value = "filesForm" type="java.lang.Object" /> > <bean:define id="folder" name="filesForm" property="folder" > value = "filesForm" type="java.lang.Object" /> > <html:hidden property="folder"/> > <html:hidden property="processName"/> > > </snippet> > > It always dies on the first bean saying it had a > ClassCastEsception when trying to locate the Start tag > > I'm not clear asd to why you need to use a bean name and type?? > > Examples would be good > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Vance Heredia > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > -----Original Message----- > > From: Rohit Aeron [mailto:[EMAIL PROTECTED] > > Sent: Thursday, 7 August 2003 6:36 PM > > To: Struts Users Mailing List > > Subject: RE: Bean tag help > > > > > > > > Just cross check that you are importing > > 1. taglib > > 2. bean > > 3. correctly specified bean name & type in struts-config. > > > > Regards > > Rohit > > > > > > > > > Hey People > > > > > > Ay ideas on how to fix my bean proble? > > > > > > Every time I try to uyse the <bean:* tag in struts I get a > > > > > > java.lang.ClassCastException > > > at > > org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:766) > > > at > > > org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:481) > > > at org.apache.jsp.files_jsp._jspService(files_jsp.java:149) > > > > > > > > > The Java code looks like > > > > > > _jspx_th_html_form_0.setParent(_jspx_th_html_html_0); > > > _jspx_th_html_form_0.setMethod("POST"); > > > _jspx_th_html_form_0.setAction("/files"); > > > 149-> int _jspx_eval_html_form_0 = > > _jspx_th_html_form_0.doStartTag(); > > > if (_jspx_eval_html_form_0 != > > > javax.servlet.jsp.tagext.Tag.SKIP_BODY) { > > > do { > > > out.write("\r\n "); > > > /* ---- bean:define ---- */ > > > java.lang.Object processName = null; > > > org.apache.struts.taglib.bean.DefineTag > > > _jspx_th_bean_define_0 = (org.apache.struts.taglib.bean.DefineTag) > > > > > > _jspx_tagPool_bean_define_property_name_id.get(org.apache.struts.tagli > > > b.bean > > > .DefineTag.class); > > > > > > > > > I havent worked a lot on struts and beans so I'm not too > > sure how to > > > fix it > > > > > > Cheers > > > > > > Vance > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > Vance Heredia > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > > > > > > ______________________________________________________________________ > > > This email, including attachments, is intended only for the > > addressee > > > and may be confidential, privileged and subject to > > copyright. 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