SSH框架整合实现Java三层架构实例（一）

HTML前台发送请求代码：

 <tr>
     <td>选择收派时间</td>
     <td>
         <input type="text" name="takeTimeId" class="easyui-combobox" required="true"
             data-options="url:'../../taketime_findAll.action',
             valueField:'id',textField:'name'" />
     </td>
 </tr>

TakeTimeAction代码:

 @Namespace("/")
 @ParentPackage("json-default")
 @Controller
 @Scope("prototype")
 public class TakeTimeAction2 extends BaseAction<TakeTime> {
     @Autowired
     private TakeTimeService2 takeTimeService;
     @Action(value="taketime_findAll",results={@Result(name="success",type="json")})
     public String findAll(){
         //调用业务层，查询所有收派时间
         List<TakeTime> taketime = takeTimeService.findAll();
         //压入值栈返回
         ActionContext.getContext().getValueStack().push(taketime);
         return SUCCESS;
     }
 }

抽取的Action公共类BaseAction代码:

 public abstract class BaseAction<T> extends ActionSupport implements
         ModelDriven<T> {
     // 模型驱动
     protected T model;
     @Override
     public T getModel() {
         return model;
     }
     // 构造器 完成model实例化
     public BaseAction() {
         // 构造子类Action对象 ，获取继承父类型的泛型
         // AreaAction extends BaseAction<Area>
         // BaseAction<Area>
         Type genericSuperclass = this.getClass().getGenericSuperclass();
         // 获取类型第一个泛型参数
         ParameterizedType parameterizedType = (ParameterizedType) genericSuperclass;
         Class<T> modelClass = (Class<T>) parameterizedType
                 .getActualTypeArguments()[0];
         try {
             model = modelClass.newInstance();
         } catch (InstantiationException | IllegalAccessException e) {
             e.printStackTrace();
             System.out.println("模型构造失败...");
         }
     }
     // 接收分页查询参数
     protected int page;
     protected int rows;
     public void setPage(int page) {
         this.page = page;
     }
     public void setRows(int rows) {
         this.rows = rows;
     }
     // 将分页查询结果数据，压入值栈的方法
     protected void pushPageDataToValueStack(Page<T> pageData) {
         Map<String, Object> result = new HashMap<String, Object>();
         result.put("total", pageData.getTotalElements());
         result.put("rows", pageData.getContent());
     ActionContext.getContext().getValueStack().push(result);
     }
 }

收派时间接口TakeTimeService代码：

 public interface TakeTimeService2 {
     //查询所有收派时间
     List<TakeTime> findAll();
 }

收派接口实现类TakeTimeServiceImpl代码：

 @Service
 @Transactional
 public class TakeTimeServiceImpl2 implements TakeTimeService2 {
     @Autowired
     private TakeTimeRepository2 takeTimeRepository;
     @Override
     public List<TakeTime> findAll() {
         return takeTimeRepository.findAll();
     }
 }

dao层TakeTimeRepository代码：

 public interface TakeTimeRepository2 extends JpaRepository<TakeTime, Integer> {}