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Struts - populating a form

Posted on 2006-11-28
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Last Modified: 2008-01-09
I am having this strange problem with Struts, using JDeveloper 10.1.3.

I've seen it working properly elsewhere, so I can't explain what it's not working on my project.

I want to display an <edit> form. So my action is passing a struts form with all the data. I'm println()'ing, so I know that the data is there. The action ends normally with

request.setAttribute("updateSupplierForm", aForm);

and the JSP page contains

<html:form action="/updateSupplier">
       <br/>a<html:text maxlength="120" size="50" property="firm" />
       <br/>a<html:text maxlength="120" size="50" property="address1" />
      ..........

(where updateSupplier is properly defined in struts-config)

**I am expecting those form fields to display the existing data, from the struts form.**
I know that this works (definately with struts 1.2). I have tried 1.1 and 1.3 and the fields are always empty. I cannot believe that it's a version problem. So now I need to put some JSP in the field tag to display the data:

    <br/>a<html:text maxlength="120" size="50" property="firm" value="<%=aForm.getFirm()%>"/>

Any ideas? Why my form is not automatically populated as it should?
   
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Question by:piou
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3 Comments
 
LVL 14

Expert Comment

by:boonleng
ID: 18033427
Can you post the struts-config.xml.
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Author Comment

by:piou
ID: 18043403
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_3.dtd">

<struts-config>
 
  <form-beans>
    <form-bean name="addStatusForm" type="project1.forms.AddStatusForm"/>
    <form-bean name="addAssetTypesForm" type="project1.forms.AddAssetTypesForm"/>
    <form-bean name="editSupplierForm" type="project1.forms.EditSupplierForm"/>
    <form-bean name="viewSupplierForm" type="project1.forms.ViewSupplierForm"/>
    <form-bean name="updateSupplierForm" type="project1.forms.UpdateSupplierForm"/>
  </form-beans>
 
  <action-mappings>
    <action path="/home" type="project1.actions.HomeAction">
      <forward name="success" path="home.page"/>
    </action>
    <action path="/getStatus" type="project1.actions.GetStatusAction">
      <forward name="success" path="/WEB-INF/jsp/status.jsp"/>
    </action>
    <action path="/editStatus" type="project1.actions.EditStatusAction">
      <forward name="success" path="/getStatus.do?edit=success" redirect="true" />
    </action>
    <action path="/removeStatus" type="project1.actions.RemoveStatusAction">
      <forward name="success" path="/getStatus.do?remove=success" redirect="true" />
    </action>
    <action path="/addStatus" type="project1.actions.AddStatusAction" name="addStatusForm" validate="true" input="/getStatus.do">
      <forward name="success" path="/getStatus.do?add=success" redirect="true" />
    </action>
    <action path="/getAssetTypes" type="project1.actions.GetAssetTypesAction">
      <forward name="success" path="/WEB-INF/jsp/assetTypes.jsp"/>
    </action>
    <action path="/editAssetTypes" type="project1.actions.EditAssetTypesAction">
      <forward name="success" path="/getAssetTypes.do?edit=success" redirect="true" />
    </action>
    <action path="/addAssetTypes" type="project1.actions.AddAssetTypesAction" name="addAssetTypesForm" validate="true" input="/getAssetTypes.do">
      <forward name="success" path="/getAssetTypes.do?add=success" redirect="true" />
    </action>
    <action path="/removeAssetTypes" type="project1.actions.RemoveAssetTypesAction">
      <forward name="success" path="/getAssetTypes.do"/>
    </action>
    <action path="/getSuppliers" type="project1.actions.GetSuppliersAction">
      <forward name="success" path="/WEB-INF/jsp/suppliers.jsp"/>
    </action>
    <action path="/viewSupplier" type="project1.actions.ViewSupplierAction" name="viewSupplierForm" >
      <forward name="success" path="/WEB-INF/jsp/viewSupplier.jsp"/>
      <forward name="error" path="/WEB-INF/jsp/common/error.jsp"/>
    </action>
    <action path="/editSupplier" type="project1.actions.EditSupplierAction" name="editSupplierForm">
      <forward name="success" path="/WEB-INF/jsp/editSupplier.jsp"/>
      <forward name="error" path="/WEB-INF/jsp/common/error.jsp"/>
    </action>
    <action path="/updateSupplier" type="project1.actions.UpdateSupplierAction" name="updateSupplierForm">
      <forward name="success" path="/viewSupplier.do?suppguid="/>
    </action>
    <action path="/removeSupplier" type="project1.actions.RemoveSupplierAction" name="editSupplierForm">
      <forward name="success" path="/getSuppliers.do" redirect="true"/>
    </action>
    <action path="/addSupplier" type="project1.actions.AddSupplierAction" name="updateSupplierForm" validate="true"
            input="/WEB-INF/jsp/addSupplier.jsp">
      <forward name="create" path="/viewSupplier.do?suppguid="/>
      <forward name="prepare" path="/WEB-INF/jsp/addSupplier.jsp"/>
      <forward name="error" path="/WEB-INF/jsp/common/error.jsp"/>
    </action>
  </action-mappings>

  <message-resources parameter="project1.ApplicationResources" />
 
  <plug-in className="org.apache.struts.tiles.TilesPlugin">
    <set-property property="definitions-config"
                 value="/WEB-INF/tiles-defs.xml"/>
  </plug-in>
 
</struts-config>
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LVL 14

Accepted Solution

by:
boonleng earned 125 total points
ID: 18053152
You are storing the bean into HTTPRequest attribute.
>>  request.setAttribute("updateSupplierForm", aForm);

But the struts-config didn't specify the scope for the action, by default it will use "session".
So it unable to lookup the value for the property.
>>  <action path="/updateSupplier" type="project1.actions.UpdateSupplierAction" name="updateSupplierForm">

Try specify the scope to "request" or store the bean to HTTPSession.
Example:
<action path="/updateSupplier"
            type="project1.actions.UpdateSupplierAction"
            name="updateSupplierForm"
            scope="request">
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