ArrayI ndex OutOfBoundsException when page refresh

[john mattucci]

I have an action which uses the following form-bean below. All works fine when the page is first displayed. In addition to user submit. For example AccessRequest[] can initially contain a list of requests lets say 5. The user can then modify request by updating info. For example he may update 2 of the 5. Then hit submit. Once requests are modified they are removed from the list. The page is refreshed and there will only be 3 requests. All works fine. However if user hits refresh on the browser I get the error below. Its very strange if I simply update one request it works fine. If user updates more than one it throws error when refresh is hit. I have placed break points throughout and it gets to the reset() method in MyDynaActionForm which obtains the correct array size. It then exits reset() and error is thrown. It never reaches the action. Thank you all for your time.

I have the following form in struts-config

<form-bean name="dynamicArrayForm" type="...MyDynaActionForm">
     <form-property name="entityList" type="Entity[]"/>
     <form-property name="access" type="AccessRequest[]"/>
</form-bean>

I get the following error

ArrayIndexOutOfBoundsException: 0 at reflect.Array.get(Native Method)at org...DynaActionForm.get(DynaActionForm.java:250)

[Merrill Higginson]

One thing that could cause this would be specifying redirect="true" on the forward for action that prepares the display of the current JSP. In this case, a refresh would cause the JSP to be displayed without the preparatory Action being called, which is not what you want.

[john mattucci]

No I don't call redirect="true". I have the following. /setupForm is initially called to display the data. setuppage.jsp will call /processForm.

<action path="/setupForm" type="SetupFormAction" name="dynamicArrayForm" scope="session" validate="false">
            <forward name="success" path="/setuppage.jsp"/>
</action>
        
<action path="/processForm" type="ProcessFormAction" name="dynamicArrayForm" scope="session" validate="false">
            <forward name="success" path="/setupForm.do"/>
</action>

[Merrill Higginson]

I believe changing the following will fix the problem:

<action path="/processForm" type="ProcessFormAction" name="dynamicArrayForm" scope="session" validate="false">             
  <forward name="success" path="/setupForm.do" [B]redirect="true"/[/B]>
</action>

This way when the user refreshes the page, the URL is always setupForm.do.

[john mattucci]

Thank you so much Merrill. That solved the problem. That way I also got rid of my code which saved the token. To avoid duplicate submit i.e. saveToken(request); ect. Thanks again