Java tutorial
/** * This file is part of Location Service :: Admin. Copyright (C) 2014 Petteri * Kivimki * * Location Service :: Admin is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or (at your * option) any later version. * * Location Service :: Admin is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General * Public License for more details. * * You should have received a copy of the GNU General Public License along with * Location Service :: Admin. If not, see <http://www.gnu.org/licenses/>. */ package com.pkrete.locationservice.admin.controller.mvc; import com.pkrete.locationservice.admin.exception.ObjectNotFoundException; import com.pkrete.locationservice.admin.model.owner.Owner; import com.pkrete.locationservice.admin.service.OwnersService; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.ui.ModelMap; import org.springframework.web.servlet.ModelAndView; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.validation.BindingResult; import org.springframework.validation.Validator; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.SessionAttributes; /** * The {@link EditSettingsController EditSettingsController} handles the * requests that are related to editing an owner object and then saving it to * the database. This class extends BaseController class. * * @author Petteri Kivimki */ @Controller @RequestMapping("/editsettings.htm") @SessionAttributes("owner") public class EditSettingsController extends BaseController { @Autowired @Qualifier("ownersService") private OwnersService ownersService; @Autowired @Qualifier("ownerValidator") private Validator validator; @RequestMapping(method = RequestMethod.POST) public ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, @ModelAttribute("owner") Owner owner, BindingResult result) throws Exception { if (getUser(request).getOwner().getId() != owner.getId()) { return new ModelAndView("redirect:index.htm"); } validator.validate(owner, result); if (result.hasErrors()) { return new ModelAndView("edit_settings", new ModelMap()); } owner.setUpdater(getUser(request).getUsername()); if (!ownersService.update(owner)) { throw new Exception("Updating settings failed."); } return new ModelAndView("redirect:editsettings.htm?success=true"); } @RequestMapping(method = RequestMethod.GET) public String initializeForm(HttpServletRequest request, ModelMap model) throws Exception { int id = getUser(request).getOwner().getId(); Owner owner = ownersService.getFullOwner(id); if (owner == null) { throw new ObjectNotFoundException( new StringBuilder("Owner not found. {\"id\":").append(id).append("}").toString()); } owner.prepareLists(); model.put("owner", owner); return "edit_settings"; } }