Can anyone help me in knowing what exectly we do when we specify url-pattern as *.do? What that do indiactes? Does it mean that struts framework gives .do extension by default to every page?
Thanks in advance.
posted 8 years ago
If you look in your web.xml file, you will find an entry similar to the following:
This is essentially telling the server: "If you get a request URL that ends in .do, pass it to the Struts ActionServlet class for processing". Once inside ActionServlet, the code knows that if the URL is /myAction.do, it is to instantiate and call execute on the class you've defined for the "/myAction" mapping.
Going the other direction, if you specify "/myAction" as the action in an html:form tag, the tag logic will append ".do" to the action when it is composing the actual URL that gets sent to the server when the form it submitted.