Answer Posted / sandeep garg
ActionServlet acts as a back bone to all the Struts
applications.
Flow:
-->First the request is handled by the either doGet()/doPost
() method of the Action Servlet and it calls the process()
mthod of its own.This method gets the Current Request
Processor associated with the request.
-->Then this request preocessor calls its preocess() method.
(Note:RequestProcessor also one type of Servlet).
This is the actaul place where the request is handled.
-->This method reads the struts-config.xml file and find
outs the Action class by seeing the request url path.
for ex:
incoming request trl path is:/login
struts-config.xml:
<action path="/login" type="Test.LoginClass">
<forward name="Succes" path="/Welcome.jsp"/>
<forward name="failure" path="/Login.jsp"/>
</action>
-->After identifying the Actio class it checks the whether
the request is associtaed with any form bean.This can be
checked by usin the name attribute of athe action element
from the struts-config.xml.
Ex:<form-beans>
<form name="loginForm" type="Test.LoginForm"/>
</form-beans>
<action-mappings>
<action path="/login"type="Test.LoginClass"
name="loginForm">
....
....
</action-mappings>
-->Then it creates the instance of ActionForm and calls the
corresponding getter and setter methods for the incoming
request parameters.Optionally we can validate the request
parameter by calling the validate()method in ActionForm.For
this we need to specify validate="true" and
input="/Login.jsp" in struts-config.xml file.
-->Now the actual request is handled by the Action class by
calling the execute() method.Output of this method
indicates the response of the request.The return type of
this request is ActionMappings ....
Is This Answer Correct ? | 36 Yes | 8 No |
Post New Answer View All Answers
Explain about struts relation to html tags?
What is the purpose of @element annotation annotation?
What is difference between interceptors and filters?
What are the components of struts framework?
What is form bean in struts?
What are action errors?
What are the struts2 error message keys that can come during file uploading process?
Name the different types of actions found in struts.
State the procedure for using forward attribute of link tag’s.
How to convert struts to spring mvc?
What is the configuration files used in struts?
Is struts mvc framework?
What is the purpose of @createifnull annotation annotation?
How action-mapping tag is used for request forwarding in struts configuration file?
How to upload struts file?