Comparing 2 form beans in Struts???

Hi,
How to compare 2 form beans in struts??? I have an edit screen with
some data in it. If user does not edit any of the values present in the
component(textfield) and try to submit the values that are old(already displayed)then i need to capture the data from form and compare it with the same data that is stored in another bean or session for example.
if both are equal, then prevent the user from submit otherwise allow the
user to submit the form with modified datas.
In order to proceed further,how we can actually compare 2 form beans which does have the same values in it???
Thanks,
JavaCrazyLover

No replies as yet...

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STRUTS - Cannot retrieve definition for form bean null -aaaarrrrgh

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http://freeweb.siol.net/peterv6i/ax1.jpg

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    at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2746)
    at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:262)    ... 38 more

Could you share with is the entire stacktrace?
It seems that your domain classes are not being founded by the classloader, and this could be a consequence of a lot of things, but in general, it is a classloader issue. Your classloader is broken by some reason. Check if dependencies are well solved, and check if there are some NoClassDefFoundErrors in the stacktrace. Sometimes when the classpath is wrong, the entire classloader brokes generating strange behaviors like this.
Also review the steps necessary to deploy Coherence*Web on GlassFish: http://docs.oracle.com/middleware/1212/coherence/COHCW/glassfish.htm#COHCW357
Remember for example that, different from WebLogic 12.1.2, you need to deploy coherence.jar and coherence-web.jar at your package deployment.
Cheers,
Ricardo Ferreira

Error creating form bean (STRUTS)

Hi
I am new to STRUTS framework, On starting I am getting this error "Error creating form bean". What would be the solution, can anybody suggest ?

I am new to STRUTS framework, On starting I am
m getting this error "Error creating form bean". What
would be the solution, can anybody suggest ?This seems to be an error with struts-config.xml. Post your code if you need any further help.
***Annie***

How to populate the form bean object for multiselect box in struts

hi, i am using two multi select boxes,one to populate the data by getting from the data base and another to fill the items selected from the first select box to store the values in the database..i need the information (how to declare the select boxes and how to write the form bean getters and setters for this one.) regarding this..

http://forum.java.sun.com/thread.jspa?threadID=5147813&messageID=9553925#9553925

How to map GUI Bean with struts action form?

Hi,
I am new to struts and I have to integrate a GUI Based Bean to struts actionform. I am desperately looking for some tips. I would be much gratefull.
See ya :)

Hello.
public vlass MyForm extends ActionForm {
private MyBean myBean;
public MyBean getMyBean() {
return myBean;
public void setMyBean(MyBean myBean) {
this.myBean = myBean;
}

Cannot retrieve definition for form bean null on action /submitCustomerForm

Can someone plz check my code...
while I try to run the code I got Stuck getting the above error report.
here is my code..
this is wat i wrote in JSP page
<html:form action="/submitCustomerForm">
and in my struts-config I ve..
<form-beans>
     <form-bean name="CustomerForm" type="app1.CustomerForm" />
</form-beans>

<global-forwards><forward name="mainpage" path="index.jsp"></forward>
</global-forwards>

<action-mappings>
<action
     path="/submitCustomerForm"
     type="app1.CustomerAction"
     name="CustomerForm"
     scope="request"
     validate="true"
     input="CustomerDetails.jsp" >
     <forward name="success" path="/Success.jsp" />
     <forward name="failure" path="/Failure.jsp" />
     </action>
</action-mappings>

<html:form action="submitCustomerForm.do">the above is the way how you call your ActionServlet
if your ActionServlet mapping is
<servlet-mapping>
<servlet-name>ActionServlet</servlet>
<url-pattern>*.do<url-pattern>
</servlet-mapping>

Cannot retrieve definition for form bean null

Hi,
          I have a page jsp which contains a form. This form contains an action
          towards (page.do ).
          I configured struts-config.xml file in whom I put a configuration of
          action ( type=xxx.pageAction ) but not form because I have not need of
          it.
          During the execution it show that it tries to instantiate a bean of form
          corresponding to a configuration of action and post this error message
          " Root causes of ServletException javax.servlet.jsp. JspException:
          Cannot retrieve definition for form bean null "
          Could you indicate to me where is the problem ?
          Here is my configuration :
          < html:form action = " page.do " method = " post " >
          </html:form >
          <action path="/page"
          type="xxx.pageAction">
          <forward name="show" path="/page.jsp"/>
          </action>
          Thanks in advance
          Rachid.


There's little reason to use Struts infrastructure to set this up since you have no model, and the controller aspect is well-defined (just go to "NewProject"!). You're basically providing a link from one page to another, akin to doing an <a href>, and you wouldn't use Struts to do a simple link :).
I would just just use standard HTML.
If you're okay with using Javascript, this is the simplest:
<input type="button" onClick="document.location='NewProject'">
Or you can use a standard HTML form, as you've basically done already:
<form action="NewProject" method="get">
<input type="submit" value="Create">
</form>

How to reset values in a Data Form Bean?

I have created an ADF application that has a search facility in it. The architecture is as follows:
DataPage (search.jsp) --> DataAction (validateSearch) -->DataAction (refreshCollection) --> DataPage (results.jsp)
I have successfully created a data form bean to hold the data that is submitted in the search and bind it to the refresh method of the collection. I have also successfully overridden the validate method, which catches and throws and displays appropriate ActionErrors on the search.jsp page.
I have added a link back to the search.jsp page from the results.jsp page (as a user may wish to perform another search), the ActionErrors are resetting ok but I have not managed to work out how to reset the values of the actual data form bean.
I have tried several different ways of overriding the reset method within the data form bean but so far have been unsuccessful - I would appreciate any assistance with this matter.
Shown here is a basic example of a form bean that I have been trying different things out with - I can not get the reset method to even be called - please help!
package uk.dmf.eg02;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class searchForm extends ActionForm
String search;
public setupForm()
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
ActionErrors errors = new ActionErrors();
if (search.trim().length()==0)
errors.add("search", new ActionError("error.search"));
return errors;
public void reset(ActionMapping mapping, HttpServletRequest request)
System.err.println("EXECUTING RESET METHOD");
this.search = "";
public void setSearch(String search)
this.search = search;
public String getSearch()
return search;

If you run in request scope the reset method is called, however in session scope is't only called once (or never?). See documentation of method reset():
public void reset(ActionMapping mapping,
javax.servlet.http.HttpServletRequest request)
Reset bean properties to their default state, as needed. This method is called before the properties are repopulated by the controller.
The default implementation does nothing. In practice, the only properties that need to be reset are those which represent checkboxes on a session-scoped form. Otherwise, properties can be given initial values where the field is declared.
If the form is stored in session-scope so that values can be collected over multiple requests (a "wizard"), you must be very careful of which properties, if any, are reset. As mentioned, session-scope checkboxes must be reset to false for any page where this property is set. This is because the client does not submit a checkbox value when it is clear (false). If a session-scoped checkbox is not proactively reset, it can never be set to false.
This method is not the appropriate place to initialize form value for an "update" type page (this should be done in a setup Action). You mainly need to worry about setting checkbox values to false; most of the time you can leave this method unimplemented.

How to call the form bean value on jsp withthe help of jstl tag

hi
all friends
i am working in struts & i use jstl tag in jsp. i have one problem rise is how to call the form bean value in jsp page by using jstl tag.
i now how to retrive the value through jsp:logic
eg. <logic:empty name="userListForm" property="users">
NO USER FOUND
</logic:empty>
see * userListForm mean formbaen name.
* users means collection object.
so how can i write above e.g in jstl

You use the jstl core:if or core:choose combined with the EL:
<c:if test="${empty users.userListForm}">
NO USERS FOUND
</c:if>I suggest you lookup the jsp expression language (EL) using google, it's very powerful.

Passing a form bean with a link

Hii Javaties
I am passing some parameters from a jsp page to the action class in the following manner
�2=<bean write name="formbean" property="prop2" />Link
Can anyone tell me is this the right approach to pass paramters from a link .
Can i pass the whole form bean with a link ?

From what I understand you are using Struts, and as much as I know you have to configure struts so that when you click for example on a link with the url set as hello.do, it will actually get the hello form bean and handle it. However as much as I know you have to do this from the xml configuration!
I am not expert in struts however, but that is my feeling.
regards,
sim085

Retrieve data from entity bean to struts and display in JSP

I am integrating Struts+EJB3.0.
Now i need to retrieve data stored in mysql database through entity bean to struts framework*(Action Form*).Then i need to display it in JSP page.(display using combo box).
Please Any one give suggestions!!!!!
Thanks in advance

I got the solution.
--Jagan.+

Comparing 2 form beans in Struts???

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