jsp hidden field not populated in ActionForm

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posted 14 years ago

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I've read many coderanch conversations and still need to ask:

Why doesn't the hidden field get populated to the ActionForm? It's like RequestUtils.populate ignores the field.

Then, how can I modify the same hidden field depending on which link the user selects? Should javascript and DOM work?

ActionForm

Action

web.xml

config

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">

<struts-config>
	<data-sources></data-sources>
	   
	<form-beans>
    	<form-bean	name="loginForm" type="login.LoginForm"/>
    	<form-bean	name="dataStoreForm" type="datastore.DataStoreForm"/>
	</form-beans> 
	<global-forwards>
		<forward name="utilities" path="/utilities.jsp"/>
		<forward name="dataStoreUtilities" path="/dataStoreUtilities.jsp"/>
		<forward name="chooseDataStoreType" path="/chooseDataStoreType.jsp"/>
		<forward name="dataStoreUtilizeDatabase" path="/dataStoreUtilizeDatabase.jsp"/>
	</global-forwards>
	   
	
	<action-mappings>
	  <action path="/login" type="login.LoginAction" name="loginForm"
	  			scope="request" validate="true" input="/index.jsp">
	  		<forward name="success" path="/mainMenu.jsp"></forward></action>
	  <action path="/chooseDataStoreType" type="datastore.DataStoreAction" name="dataStoreForm"
	  			scope="request" validate="true" input="/index.jsp">
	  		<forward name="success" path="/mainMenu.jsp"></forward></action>
	</action-mappings>
<controller processorClass= "utils.MattsRequestProcessor" /> 
 	
  	<message-resources	null="false"
    					parameter="MessageResources">
	</message-resources>
</struts-config>

Thanks.

Matt

Jaimesh M Ponkia

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Posts: 21

posted 14 years ago

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HTML Link does not carry the form data. You can either go for different submit buttons or pass the values as parameter to the action link and fetch it accordingly in action class. Use the rewrite tags to hide parameters it from the end users.

matt love

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posted 14 years ago

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Thanks Jaimesh,

I had come up with a work-around, similar to your first solution with two Submits.

In the config I created two mappings, each going to the same Action, one mapping each from the two links with different actions, ie, <html:link action="/chooseDataStoreTypeDataBase"> for one and <html:link action="/chooseDataStoreTypeArray"> for the other. The config entries:

The trick was creating an Interface that each of the mapping's form extended. Each form had a different literal, eg, one form had private static final String dataStoreType = "array"; and the other private static final String dataStoreType = "dataBase";. Thus, in the Action I could test the Interface and polymorphically determine which Link sent the request.

I've since modified my solution by utilizing request.getRequestURI() in the Action.

Maybe not the most elegant solution, but it seems reasonable.

I included alot of the above code in case someone can use it later.

Thanks again.

Matt

Jaimesh M Ponkia

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Posts: 21

posted 14 years ago

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If you were using the hidden variable only to determine which link was clicked then you can go for using LookUpDispatchAction and set the action according to your link. This way you will not have to make 2 entries in struts-config and not worry about requestURI.

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