ssh2整合实例带详细的注释简单易懂

package com.bolo.examples.common.web; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.struts2.ServletActionContext; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import com.bolo.examples.common.orm.hibernate3.HibernateDao; import com.bolo.examples.common.utils.ReflectUtils; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; import com.opensymphony.xwork2.Preparable; /** * 扩展ActionSupport的泛型基类 * <br />封装CRUD基本方法，可在子类进行覆盖重写 * @author 菠萝大象 * @param <T> 实体类型 */ public class StrutsAction<T> extends ActionSupport implements ModelDriven, Preparable{ protected Integer id; //实体类的主键ID protected Class<T> entityClass; //T的反射类型 protected T entity; //T类型对象 protected List<T> list; //页面列表list protected Logger logger = LoggerFactory.getLogger(StrutsAction.class); //日志记录 public static final String RELOAD = "reload"; //重定向的返回字符串 public static final String VIEW = "view"; //查看方法的返回字符串 public static final String REDIRECT = "redirect"; //重定向，@Result type属性对应的值 public static final String REDIRECT_ACTION = "redirectAction"; //Action之间重定向，@Result type属性对应的值 @Autowired @Qualifier("hibernateDao") protected HibernateDao hibernateDao; /** * 在构造函数中利用反射机制获得参数T的具体类 */ public StrutsAction(){ this.entityClass = ReflectUtils.getClassGenricType(getClass()); } /** * Action的默认执行方法 */ @Override public String execute() throws Exception{ doListEntity(); return SUCCESS; } /** * 进入新增或修改页面 */ @Override public String input() throws Exception{ doInputEntity(); return INPUT; } /** * 进入查看页面 */ public String view() throws Exception{ doViewEntity(); return VIEW; } /** * 新增或修改 */ public String save() throws Exception{ doSaveEntity(); return RELOAD; } /** * 删除 */ public String delete() throws Exception{ doDeleteEntity(); return RELOAD; } /** * execute回调方法，处理进入主页面的相关逻辑，可在子类中覆盖此方法 */ protected void doListEntity() throws Exception{ list = hibernateDao.getAll(entityClass); } /** * input回调方法，处理进入新增或修改页面前的相关逻辑，可在子类中覆盖此方法 */ protected void doInputEntity() throws Exception{} /** * view回调方法，处理进入查看页面的相关逻辑，可在子类中覆盖此方法 */ protected void doViewEntity() throws Exception{} /** * save回调方法，处理删除的相关逻辑，可在子类中覆盖此方法 */ protected void doSaveEntity() throws Exception{ try { hibernateDao.save(entity); }catch (Exception e) { logger.error(e.getMessage(), e); } } /** * delete回调方法，处理删除相关逻辑，可在子类中覆盖此方法 */ protected void doDeleteEntity() throws Exception{ try { hibernateDao.delete(entityClass,id); }catch (Exception e) { logger.error(e.getMessage(), e); } } public void prepareInput() throws Exception { prepareEntity(); } public void prepareSave() throws Exception { prepareEntity(); } public void prepareView() throws Exception { prepareEntity(); } protected void prepareEntity() throws Exception{ if (id != null) { entity = (T)hibernateDao.get(entityClass,id); } else { entity = entityClass.newInstance(); } } /** * 取得HttpSession函数 */ public static HttpSession getSession() { return ServletActionContext.getRequest().getSession(); } /** * 取得HttpRequest函数. */ public static HttpServletRequest getRequest() { return ServletActionContext.getRequest(); } /** * 取得HttpResponse函数 */ public static HttpServletResponse getResponse() { return ServletActionContext.getResponse(); } /** * ModelDriven接口定义的方法，返回实体对象 */ public T getModel() { return entity; } /** * 页面列表显示的list */ public List getList() { return list; } /** * 获取页面传递的id值 * @param id 主键ID */ public void setId(Integer id) { this.id = id; } /** * Preparable接口的方法，设置为空方法体是屏蔽它去拦截所有的方法 */ public void prepare() throws Exception {} }