Question

The below piece of code was written in struts-config file.but i am not able to understand it.

   <action path="/showWelcome"
            type="com.code.base.presentation.struts.actions.StrutsIoCAction"
            name="LoanDetailPageLoadForm"
            parameter="GET_WELCOME_PAGE"
            input="welcomePage"
            validate="false"
            scope="request">
        <set-property property="requestDTOKeyName" value="ItemDataRequest" />
        <set-property property="responseDTOKeyName" value="ItemDataResponse" />
        <set-property property="exceptionDTOKeyName" value="ProfileSekerException" />

        <set-property property="businessServiceId" value="ItemsDataMgmtService" />

        <forward name="success" path="welcomePage" />
        <forward name="failure" path="sysError" />
    </action>

My question is

1. what is the usage of path attribute?
2. what is the usage of parameter attribute?
3. what is the usage of input attribute?
4. what is the usage of <set-Property>?

Help me guys on this.

Note:
as per my understanding there should be “showWelcome.jsp” page in the application but it is not there.(then what is use of that?)

Answer 1

1. It specifies where the action is mounted. For example, this action would respond on http://yourservice.dom/showWelcome.
2. Parameter is the string you get by calling ActionMapping.getParameter(). Any string you want to pass to your action.
3. Input is a path where the user would be redirected if he fills the form incorrectly. As there’s validate=false, I’d say that would never happen.
4. Obviously, it sets a property on com.code.base.presentation.struts.actions.StrutsIoCAction. I think it calls setter, i.e. it would call setRequestDTOKeyName(), setResponseDTOKeyName() etc.

But if you’re going to use struts for a considerable time, QA won’t get you far, read some docs on struts’ config file.