[Springframework-developer] ParameterNameMethodNameResolver

[Colin S. <col...@ex...>]

I've added a new resolver for the MultiActionController, 
ParameterNameMethodNameResolver. Unlike ParameterMethodNameResolver, 
which looks for a parameter like
   action=methodname
where action stays constant, and the value is the method name, 
ParameterNameMethodNameResolver uses the very existene of a parameter 
name as an indication to map to a specific method. So feeding it the 
String mapping array
   "hello:goodbye", "validate", "colin:nina"
for example would map to the 'goodbye' method if there was a param 
'hello', to the 'validate' method if there was a parameter named 
'validate', and to 'nina' if there is a parameter named 'colin'. The 
request parameter value is simply ignored, and the first match wins.

This is useful when you have a bunch of submit buttons on a page, and 
need to be able to tell them apart. The value attribute of a submit 
button is also the display text, which is often localized, so it's not a 
great mechanism to have the same button name and use the value to tell 
the buttons apart. However, the name itself can be set different for 
each button, and then this resolver can map based on that.

Colin