java - How to handle multiple actions in a single form in Struts 2

Question

I have a form contains three buttons print/export/save.

<s:form action="/userAction">
    <s:submit type="image" value="%{'print'}" src="/print.png" />
    <s:submit type="image" value="%{'export'}" src="/export.png" />
    <s:submit type="image" value="%{'save'}" src="/save.png" />
</s:form>

How can I map this in struts.xml?

Answer 1

In the struts.xml the action is mapped via the action tag

<action name="userAction" class="...

the submit buttons should include method attribute to call corresponding methods of the action

<s:submit type="image" value="%{'print'}" src="/print.png" method="print" />
<s:submit type="image" value="%{'export'}" src="/export.png" method="export" />
<s:submit type="image" value="%{'save'}" src="/save.png" method="save" />

Note: To map a method attribute you should have DMI turned on.