OA学习笔记-008-岗位管理Action层实现

一、分析

1，设计实体/表
设计实体 --> JavaBean --> hbm.xml --> 建表

2，分析有几个功能，对应几个请求。

3，实现功能：
1，写Action类，写Action中的方法，确定Service中的方法。
2，写Service方法，确定Dao中的方法。
3，写Dao方法。
4，写JSP

============================

请求数量 地址栏
转发 1 不变
重定向 2 变化

增删改查共4个功能，需要6个请求。
所以需要相应的6个Action方法，每个Action方法处理一种请求。

作用 方法名 返回值 对应的页面
----------------------------------------------------
列表 list() list list.jsp
删除 delete() toList
添加页面 addUI() addUI addUI.jsp
添加 add() toList
修改页面 editUI() editUI editUI.jsp
修改 edit() toList

<result name="toList" type="redirectAction">role_list</result>

role_* ---> {1}

role_list list
role_addUI addUI
role_delete delete

二、代码

1.Action层

 package cn.itcast.oa.view.action;

 import java.util.List;

 import javax.annotation.Resource;

 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Controller;

 import cn.itcast.oa.domain.Role;
 import cn.itcast.oa.service.RoleService;

 import com.opensymphony.xwork2.ActionContext;
 import com.opensymphony.xwork2.ActionSupport;
 import com.opensymphony.xwork2.ModelDriven;

 @Controller
 @Scope("prototype")
 public class RoleAction extends ActionSupport implements ModelDriven<Role> {

     private static final long serialVersionUID = 1L;

     @Resource
     private RoleService roleService;

     // private Long id;
     // private String name;
     // private String description;

     private Role model = new Role();

     public Role getModel() {
         return model;
     }

     /** 列表 */
     public String list() throws Exception {
         List<Role> roleList = roleService.findAll();
         ActionContext.getContext().put("roleList", roleList);
         return "list";
     }

     /** 删除 */
     public String delete() throws Exception {
         roleService.delete(model.getId());
         return "toList";
     }

     /** 添加页面 */
     public String addUI() throws Exception {
         return "saveUI";
     }

     /** 添加 */
     public String add() throws Exception {
         // // 封装到对象中
         // Role role = new Role();
         // role.setName(model.getName());
         // role.setDescription(model.getDescription());
         //
         // // 保存到数据库
         // roleService.save(role);

         roleService.save(model);

         return "toList";
     }

     /** 修改页面 */
     public String editUI() throws Exception {
         // 准备回显的数据
         Role role = roleService.getById(model.getId());
         ActionContext.getContext().getValueStack().push(role);

         return "saveUI";
     }

     /** 修改 */
     public String edit() throws Exception {
         // 1，从数据库中获取原对象
         Role role = roleService.getById(model.getId());

         // 2，设置要修改的属性
         role.setName(model.getName());
         role.setDescription(model.getDescription());

         // 3，更新到数据库
         roleService.update(role);

         return "toList";
     }

     // ---

     // public Long getId() {
     // return id;
     // }
     //
     // public void setId(Long id) {
     // this.id = id;
     // }
     //
     // public String getName() {
     // return name;
     // }
     //
     // public void setName(String name) {
     // this.name = name;
     // }
     //
     // public String getDescription() {
     // return description;
     // }
     //
     // public void setDescription(String description) {
     // this.description = description;
     // }
 }

2.Service层

 package cn.itcast.oa.service.impl;

 import java.util.List;

 import javax.annotation.Resource;

 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;

 import cn.itcast.oa.dao.RoleDao;
 import cn.itcast.oa.domain.Role;
 import cn.itcast.oa.service.RoleService;

 @Service
 @Transactional
 public class RoleServiceImpl implements RoleService {

     @Resource
     private RoleDao roleDao;

     public Role getById(Long id) {
         return roleDao.getById(id);
     }

     public void delete(Long id) {
         roleDao.delete(id);
     }

     public void save(Role role) {
         roleDao.save(role);
     }

     public void update(Role role) {
         roleDao.update(role);
     }

     public List<Role> findAll() {
         return roleDao.findAll();
     }

 }

3.Dao层

 @Repository    //这里写了@Repository，则父类BaseDaoImpl的sessionFactory可以注入
 public class RoleDaoImpl extends BaseDaoImpl<Role> implements RoleDao {

 }

4.View层

(1)saveUI.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 <%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
 <head>
     <title>岗位设置</title>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <script language="javascript" src="${pageContext.request.contextPath}/script/jquery.js"></script>
     <script language="javascript" src="${pageContext.request.contextPath}/script/pageCommon.js" charset="utf-8"></script>
     <script language="javascript" src="${pageContext.request.contextPath}/script/PageUtils.js" charset="utf-8"></script>
     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/style/blue/pageCommon.css" />
     <script type="text/javascript">
     </script>
 </head>
 <body> 

 <!-- 标题显示 -->
 <div id="Title_bar">
     <div id="Title_bar_Head">
         <div id="Title_Head"></div>
         <div id="Title"><!--页面标题-->
             <img border="0" width="13" height="13" src="${pageContext.request.contextPath}/style/images/title_arrow.gif"/> 岗位设置
         </div>
         <div id="Title_End"></div>
     </div>
 </div>

 <!--显示表单内容-->
 <div id="MainArea">

     <s:form action="role_%{ id == null ? 'add' : 'edit' }">
         <s:hidden name="id"></s:hidden>

         <div class="ItemBlock_Title1"><!-- 信息说明<DIV CLASS="ItemBlock_Title1">
             <IMG BORDER="0" WIDTH="4" HEIGHT="7" SRC="${pageContext.request.contextPath}/style/blue/images/item_point.gif" /> 岗位信息 </DIV>  -->
         </div>

         <!-- 表单内容显示 -->
         <div class="ItemBlockBorder">
             <div class="ItemBlock">
                 <table cellpadding="0" cellspacing="0" class="mainForm">
                     <tr>
                         <td width="100">岗位名称</td>
                         <td><s:textfield name="name" cssClass="InputStyle" /> *</td>
                     </tr>
                     <tr>
                         <td>岗位说明</td>
                         <td><s:textarea name="description" cssClass="TextareaStyle"></s:textarea></td>
                     </tr>
                 </table>
             </div>
         </div>

         <!-- 表单操作 -->
         <div id="InputDetailBar">
             <input type="image" src="${pageContext.request.contextPath}/style/images/save.png"/>
             <a href="javascript:history.go(-1);"><img src="${pageContext.request.contextPath}/style/images/goBack.png"/></a>
         </div>
     </s:form>
 </div>

 </body>
 </html>

(2)list.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 <%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
     <head>
         <title>My JSP 'index.jsp' starting page</title>
     </head>
     <body>

         <%--
         <s:iterator value="#roleList">
             <s:property value="id"/>,
             <s:property value="%{name}"/>,
             <s:property value="description"/>,
             <s:a action="role_delete?id=%{id}" onclick="return confirm('确定要删除吗？')">删除</s:a>,
             <s:a action="role_editUI?id=%{id}">修改</s:a>
             <br/>
         </s:iterator>
         --%>

         <s:iterator value="#roleList">
             ${id},
             ${name},
             ${description},
             <s:a action="role_delete?id=%{id}" onclick="return confirm('确定要删除吗？')">删除</s:a>,
             <s:a action="role_editUI?id=%{id}">修改</s:a>
             <br/>
         </s:iterator>

         <br/>
         <s:a action="role_addUI">添加</s:a>

     </body>
 </html>