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How to use SimpleFormController in Spring |
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SimpleFormController is used for easing Security purposes in a web application.
Suppose you have a page logon.jsp which is a Security entry point for your web application developed in springs then make a class LogonFormController which is controller and extends SimpleFormController.
import javax.servlet.ServletException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
import org.springframework.web.servlet.view.RedirectView;
public class LogonFormController extends SimpleFormController
{
public ModelAndView onSubmit(Object command) throws ServletException
{
return new ModelAndView(new RedirectView(getSuccessView()));
}
}
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Add following lines of code in Dispatcher Servlet Specific XML File:
<bean id="logonValidator" class="test.web.LogonValidator"/>
<bean id="logonForm" class="test.web.LogonFormController">
<property name="sessionForm"><value>true</value></property>
<property name="commandName"><value>credentials</value></property>
<property name="commandClass"><value>test.business.Credentials</value></property>
<property name="validator"><ref bean="logonValidator"/></property>
<property name="formView"><value>logon.jsp</value></property>
<property name="successView"><value>sucess.jsp</value></property>
</bean>
Here is description of each tag:
- Logon Validator contains code for validatio (username password checking)
- commandName is class for form backing bean
- FormView is page that have authentication specific fields like username, password
- Sucessview is view that is secure web page and will be shown only if validation is successful.
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