Controller Classes of MVC application

In the project JobFinder we controllers HomeController.java and VisitorController.java

In HomeController.java we defined only one method which maps to the Home page of our application.

HomeController.java

@Controller

public class HomeController {

@RequestMapping("/")

public String showPage() {

return "main-menu";

}

We have also declared VisitorConstructor.java which has all the initialization and processing of the visitor form and details.

VisitorController.java

@Controller

@RequestMapping("/visitor")

public class VisitorController {

//add an initbinder ...to convert trim input strings

//remove leading and trailing whitespace

//resolve issue for validation

@InitBinder

public void initBinder(WebDataBinder dataBinder) {

StringTrimmerEditor stringTrimmerEditor = new StringTrimmerEditor(true);

dataBinder.registerCustomEditor(String.class, stringTrimmerEditor);

}

 The above method is used to trim the whitespaces from the input done by the visitor.

@RequestMapping("/showForm")

public String showForm(Model theModel) {

/*

* //create customer object Customer theCustomer = new Customer();

*/

//add customer object to the model

theModel.addAttribute("visitor",new Visitor());

return "visitor-form";

}

The above method is for initializing visitor details. It maps to showForm and returns visitorForm.

@RequestMapping("/processForm")

public String processForm(@Valid @ModelAttribute("visitor") Visitor theVisitor, BindingResult theBindingResult) {

if(theBindingResult.hasErrors()) {

return "visitor-form";

}

else {

/*

* //log the input data System.out.println("theCustomer"

* +theCustomer.getFirstName() + theCustomer.getLastName());;

*/

return "visitor-details";

}

The above form is to process the details filled by the Visitor. It maps to processForm and returns visitor-details .jsp file.

Controller handles the request sent by the client and sends back the response as a view page which is .jsp files in this case.

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