Java tutorial
package com.adanac.module.blog.dynamic; /* * Copyright 2002-2015 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import com.adanac.module.blog.dao.CityDao; import com.adanac.module.blog.dao.DictionaryDao; import com.adanac.module.blog.dao.ProvinceDao; import com.adanac.module.blog.dao.UserDao; import com.adanac.module.blog.mvc.DataMap; import com.adanac.module.blog.mvc.Namespace; import com.adanac.module.blog.orm.DaoFactory; import com.adanac.module.blog.servlet.AbstractServlet; import org.apache.commons.lang.StringUtils; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.Map; /** * @author adanac * @since 2015616 ?1:35:04 */ @Namespace("common") public class UserCenter implements DataMap { @Override public void putCustomData(Map<String, Object> data, HttpServletRequest request, HttpServletResponse response) { Map<String, String> user = AbstractServlet.getUser(request); if (user == null) { throw new RuntimeException(); } if (StringUtils.isNotBlank(user.get("province"))) { Integer provinceId = DaoFactory.getDao(ProvinceDao.class).getId(user.get("province")); data.put("cities", DaoFactory.getDao(CityDao.class).getCities(provinceId)); } data.put("provinces", DaoFactory.getDao(ProvinceDao.class).getProvinces()); data.put("languages", DaoFactory.getDao(DictionaryDao.class).getDictionariesByType("LANG")); } }