LoginController.java

package com.hibu.chile.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.hibu.chile.constant.Mappings;
import com.hibu.chile.constant.Request;
import com.hibu.chile.constant.Templates;
import com.hibu.chile.form.LoginForm;
import com.hibu.chile.form.validator.LoginFormValidator;
import com.hibu.chile.interceptor.SecurityInterceptor;
import com.hibu.chile.util.Validator;
import com.hibu.chile.view.LoginView;
import com.hibu.chile.web.FormUtils;
import com.hibu.chile.web.LdapAuthenticator;
import com.hibu.chile.web.SpringUtils;

@Controller
public class LoginController {

	/* *******************************************************
	 * ****************** Login : /login ********************* 
	 * *******************************************************/
	
	@RequestMapping(value = Mappings.LOGIN, method = RequestMethod.GET)  
	public ModelAndView loginGet(HttpServletRequest request, HttpServletResponse response) {
		
		LoginView view = new LoginView();
		view.setForm(new LoginForm());
		
		view = SpringUtils.checkSuMsgs(request, view);
		
		return SpringUtils.createMv(Templates.TMPL_LOGIN, Request.VIEW, view);
	}
	
	/* *******************************************************
	 * ****************** Login : /login  ******************** 
	 * *******************************************************/
	
	@RequestMapping(value = Mappings.LOGIN, method = RequestMethod.POST)  
	public ModelAndView loginPost(HttpServletRequest request, HttpServletResponse response) 
			throws Exception {
		
		LoginForm form = FormUtils.fillForm(request, LoginForm.class);
		LoginView view = new LoginView();
		view.setForm(form);
		
		validator.validate(form, request);
		
		if (validator.isValid()) {
			
			boolean loggedIn = ldapAuthenticator.login(form.getUser(), form.getPssw());
			
			if (loggedIn) {
				
				HttpSession session = request.getSession();
				session.setAttribute(SecurityInterceptor.USER_NAME, form.getUser());
				String lastPath = (String) session.getAttribute(SecurityInterceptor.LAST_PATH);
				
				if (Validator.isBlank(lastPath) || Mappings.LOGIN.equals(lastPath)) {
					
					return SpringUtils.createRedirect(Mappings.HOME);
					
				}
				else {
				
					return SpringUtils.createRedirect(lastPath);
					
				}
				
				
			}
			else {
				
				SpringUtils.addSuMsg(request, LOGIN_FAIL, false);
				
			}
			
		}
		else {
			
			SpringUtils.addSuMsgs(request, validator.getErrors(), false);
			
		}
		
		view = SpringUtils.checkSuMsgs(request, view);
		
		return SpringUtils.createMv(Templates.TMPL_LOGIN, Request.VIEW, view);
	}

	/* *******************************************************
	 * ******************* Logut: /logout ******************** 
	 * *******************************************************/
	
	@RequestMapping(value = Mappings.LOGOUT, method = RequestMethod.GET)  
	public ModelAndView logoutGet(HttpServletRequest request, HttpServletResponse response) {
		
		HttpSession session = request.getSession();
		session.setAttribute(SecurityInterceptor.USER_NAME, null);
		
		return SpringUtils.createRedirect(Mappings.LOGIN);
	}

	
	/* *******************************
	 ****** Private constants ********
	 ****************************** */
	
	private static final String LOGIN_FAIL = "login.fail";
	
	/* *******************************
	 ******* Injected objects ********
	 ****************************** */
	
	private LdapAuthenticator ldapAuthenticator;
	private LoginFormValidator validator = new LoginFormValidator();

	/* *******************************
	 ********** Constructor **********
	 ******************************* */
	
	@Autowired
	public LoginController(LdapAuthenticator ldapAuthenticator) {
		this.ldapAuthenticator = ldapAuthenticator;
	}
	
}