pass parameter from HTML to Flow not working

[fxthomas]

hi,

I am passing a parameter in flow start. I want to use this parameter in my flow

i am passing the parameter as this way in the html.

<A href="customobject.htm?_flowId=CustomField-flow&objectId=2593">Custom Objects</A>


in the flow .xml

    <?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.springframework.org/schema/webflow
                          http://www.springframework.org/schema/webflow/spring-webflow-1.0.xsd">

    <var name="customFieldType" class="com.sb.model.CustomFieldType" scope="conversation"/>
  	<var name="customField" class="com.sb.model.CustomField" scope="conversation"/>



	<start-actions>
       <set attribute="objectId" scope="flow" value="${requestParameters.objectId}"/>
	  </start-actions>


<view-state id="displayFieldType4" view="CustomField4">
		<render-actions>
			<bean-action bean="customFieldDAO" method="getPageLayouts">
				<!--
				<method-arguments>
					<argument expression="requestParameters" />			
				</method-arguments>
				-->
				<method-arguments>
					<argument expression="${requestParameters.objectId}" parameter-type="int"/>			
				</method-arguments>
				<method-result name="results"/>
			</bean-action>
		</render-actions>

I am getting this error while rendering the page.

org.springframework.webflow.engine.ActionExecution Exception: Exception thrown executing [AnnotatedAction@1a0b94d targetAction = org.springframework.webflow.action.LocalBeanInvoki ngAction@e59e40, attributes = map[[empty]]] in state 'displayFieldType4' of flow 'CustomField-flow' -- action execution attributes were 'map[[empty]]'; nested exception is org.springframework.binding.method.MethodInvocatio nException: Unable to invoke method [MethodSignature@f8ae79 methodName = 'getPageLayouts', parameters = [[Parameter@17044c5 type = Integer, name = requestParameters.objectId]]] with arguments array<Object>[[null]]; nested exception is java.lang.IllegalArgumentException


How do i pass the parameter to my method argument.

[osc707]

hi,

I am passing a parameter in flow start. I want to use this parameter in my flow

i am passing the parameter as this way in the html.

<A href="customobject.htm?_flowId=CustomField-flow&objectId=2593">Custom Objects</A>


in the flow .xml

    <?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.springframework.org/schema/webflow
                          http://www.springframework.org/schema/webflow/spring-webflow-1.0.xsd">

    <var name="customFieldType" class="com.sb.model.CustomFieldType" scope="conversation"/>
  	<var name="customField" class="com.sb.model.CustomField" scope="conversation"/>



	<start-actions>
       <set attribute="objectId" scope="flow" value="${requestParameters.objectId}"/>
	  </start-actions>


<view-state id="displayFieldType4" view="CustomField4">
		<render-actions>
			<bean-action bean="customFieldDAO" method="getPageLayouts">
				<!--
				<method-arguments>
					<argument expression="requestParameters" />			
				</method-arguments>
				-->
				<method-arguments>
					<argument expression="${requestParameters.objectId}" parameter-type="int"/>			
				</method-arguments>
				<method-result name="results"/>
			</bean-action>
		</render-actions>

I am getting this error while rendering the page.

org.springframework.webflow.engine.ActionExecution Exception: Exception thrown executing [AnnotatedAction@1a0b94d targetAction = org.springframework.webflow.action.LocalBeanInvoki ngAction@e59e40, attributes = map[[empty]]] in state 'displayFieldType4' of flow 'CustomField-flow' -- action execution attributes were 'map[[empty]]'; nested exception is org.springframework.binding.method.MethodInvocatio nException: Unable to invoke method [MethodSignature@f8ae79 methodName = 'getPageLayouts', parameters = [[Parameter@17044c5 type = Integer, name = requestParameters.objectId]]] with arguments array<Object>[[null]]; nested exception is java.lang.IllegalArgumentException


How do i pass the parameter to my method argument.

one thing that i noticed in the code snippet, is that you have defined objectId as a flow level object, so try changing your method to get the object from flowScope vs request.

  <argument expression="${flowScope.objectId}"  parameter-type="int"/>