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Often, we have multiple submit buttons within a single form. The below is just a simple way of identifying which button was clicked, and which actions to take.
Action with boolean properties
The boolean properties 'submit' and 'clear' will be set to 'true' or 'false' according weather the submit or clear form element is present in the submitted form.
In this case, the properties are boolean, therefore the values set would be boolean.
There is another method, using String properties, described below...
Action with String properties
In this case, the properties are String, therefore the values set are also String in nature.
I don't really like this method, as it ties in the Action to the Form. (What happens if you want different text to show up on the button ? You would have to change both the form as well as the corresponding action.)
There are other ways to achieve the same functionality. There are pros and cons to each methods. Feedback welcome.
Nyong Nyong's solution
The more elegant solution is probably by using multiple mappings for same Action. This way you don't need to set "struts.enable.DynamicMethodInvocation" to "true".
Then in MyAction class
For best practice, if you have common data loaded / managed by your actions (submit & clear), then for example, you can define a MyBaseAction class, extended by MySubmitAction and MyClearAction class. Then this is how they looks like:
You don't need to specify a method name anymore, that means we will use the default execute() method.
Then in the MyAction, MySubmitAction and MyClearAction class
Credit: Andrea Ligios