系統管理模塊_部門管理1_實現基本的增刪改查功能

先不考慮上級部門

設計實體、表

1、設計實體

Department.java

public class Department {
    private Long id;
    private String name;
    private String description;
    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、寫映射文件

Department.hbm.xml

<hibernate-mapping package="cn.itcast.oa.domain">
    <class name="Department" table="itcast_department">
        <id name="id">
            <generator class="native" />
        </id>
        <property name="name"></property>
        <property name="description"></property>
    </class>
</hibernate-mapping>

3、把映射文件添加到hibernate.cfg.xml中

4、創建表

運行測試類SpringTest.java中的testSessionFactory()方法創建SessionFactory即可

分析功能與請求

增刪改查共4個功能，6個請求，需要在Action中有6個對應的處理方法。

作用	方法名	返回值	對應的JSP頁面
列表	list()	list	list.jsp
刪除	delete()	toList
添加頁面	addUI()	addUI	addUI.jsp
添加	add()	toList
修改頁面	editUI()	editUI	editUI.jsp
修改	edit()	toList

toList的配置為：type="redirectAction" actionName=“xxAction_list”

實現功能

1，寫Action類，寫Action中的方法，確定Service中的方法。

DepartmentAction.java

@Controller
@Scope("prototype")
public class DepartmentAction extends ActionSupport implements ModelDriven<Department>{//這里也需要轉遞參數id,名稱和說明，實體里都有了。所以要實現ModelDriven,封裝表單當中傳遞過來的參數
    
    //有接口有實現類，想用它就創建，采用@Resource注入
    @Resource
    private DepartmentService departmentService;

    private Department model = new Department();
    
    public Department getModel() {
        return model;
    }
    /**
     * 列表
     */
    public String list() throws Exception {
        List<Department> departmentList = departmentService.findAll();//findAll()在DepartmentService接口中創建
        ActionContext.getContext().put("departmentList", departmentList);//放在map里面方便拿，#號獲取
        
        return "list";
    }
    /**
     * 刪除
     */
    public String delete() throws Exception {
        departmentService.delete(model.getId());//delete()在DepartmentService接口中創建
        return "toList";
    }
    /**
     * 添加頁面
     */
    public String addUI() throws Exception {
        return "saveUI";
    }
    /**
     * 添加
     */
    public String add() throws Exception {
        //封裝到對象中
        /*Department department = new Department();
        department.setName(model.getName());
        department.setDescription(model.getDescription());
        //保存到數據庫中
        departmentService.save(department);*/
        
        //添加的方法可以簡化成一行代碼
        departmentService.save(model);
        return "toList";
    }
    /**
     * 修改頁面
     */
    public String editUI() throws Exception {
        //准備回顯的數據
        Department department =departmentService.getById(model.getId());//把回顯的數據的id告訴我
        ActionContext.getContext().getValueStack().push(department);//把它放到棧頂就能回顯
        return "saveUI";
    }
    /**
     * 修改
     */
    public String edit() throws Exception {
        //1.從數據庫中取出原對象
        Department department = departmentService.getById(model.getId());
        //2.設置要修改的屬性
        department.setName(model.getName());
        department.setDescription(model.getDescription());
        //3.更新到數據庫中
        departmentService.update(department);
        return "toList";
    }
}

在struts.xml文件中配置

　　　　　<!-- 部門管理 -->
        <action name="department_*" class="departmentAction" method="{1}">
            <result name="list">/WEB-INF/jsp/departmentAction/list.jsp</result>
            <result name="saveUI">/WEB-INF/jsp/departmentAction/saveUI.jsp</result>
            <result name="toList" type="redirectAction">department_list</result>
        </action>

要想找到這個bean，得在DepartmetAction類上聲明：

@Controller

@Scope("prototype")

2，寫Service方法，確定Dao中的方法。

DepartmentService.java

//接口中只有方法的聲明，沒有方法的實現
public interface DepartmentService {

    List<Department> findAll();

    void delete(Long id);

    void save(Department model);

    Department getById(Long id);

    void update(Department department);
}

DepartmnetServiceImpl.java

//在Action中要調用Service，要寫下面兩個注解
@Service
@Transactional    //業務層要管理實務，控制開關事務
public class DepartmentServiceImpl implements DepartmentService{
    
    //Service里要調用Dao，得到它通過注入
    @Resource
    private DepartmentDao departmentDao;

    public List<Department> findAll() {
        return departmentDao.findAll();
    }

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

    public void save(Department model) {
        departmentDao.save(model);
    }

    public Department getById(Long id) {
        return departmentDao.getById(id);
    }

    public void update(Department department) {
        departmentDao.update(department);
    }
}

3，寫Dao方法。

DepartmentDao.java

public interface DepartmentDao extends BaseDao<Department>{
}

DepartmentDaoImpl.java

//加上這個注解交給容器管理，Service就能
@Repository
public class DepartmentDaoImpl extends BaseDaoImpl<Department> implements DepartmentDao {
}

4，寫JSP

把美工做好的頁面代碼拷過來

修改為正確的路徑

list.jsp

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <%@ taglib prefix="s" uri="/struts-tags" %>
 3 <html>
 4 <head>
 5     <title>部門列表</title>
 6     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 7     <script language="javascript" src="${pageContext.request.contextPath}/script/jquery.js"></script>
 8     <script language="javascript" src="${pageContext.request.contextPath}/script/pageCommon.js" charset="utf-8"></script>
 9     <script language="javascript" src="${pageContext.request.contextPath}/script/PageUtils.js" charset="utf-8"></script>
10     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/style/blue/pageCommon.css" />
11     <script type="text/javascript">
12     </script>
13 </head>
14 <body>
15  
16 <div id="Title_bar">
17     <div id="Title_bar_Head">
18         <div id="Title_Head"></div>
19         <div id="Title"><!--頁面標題-->
20             <img border="0" width="13" height="13" src="${pageContext.request.contextPath}/style/images/title_arrow.gif"/> 部門管理
21         </div>
22         <div id="Title_End"></div>
23     </div>
24 </div>
25 
26 <div id="MainArea">
27     <table cellspacing="0" cellpadding="0" class="TableStyle">
28        
29         <!-- 表頭-->
30         <thead>
31             <tr align=center valign=middle id=TableTitle>
32                 <td width="150px">部門名稱</td>
33                 <td width="150px">上級部門名稱</td>
34                 <td width="200px">職能說明</td>
35                 <td>相關操作</td>
36             </tr>
37         </thead>
38 
39         <!--顯示數據列表-->
40         <tbody id="TableData" class="dataContainer" datakey="departmentList">
41         
42         <s:iterator value="#departmentList">
43             <tr class="TableDetail1 template">
44                 <td>${name}&nbsp;</td>
45                 <td>${parent.name}&nbsp;</td>
46                 <td>${description}&nbsp;</td>
47                 <td><s:a action="department_delete?id=%{id}" onClick="return window.confirm('這將刪除所有的下級部門，您確定要刪除嗎？')" >刪除</s:a>
48                     <s:a action="department_editUI?id=%{id}">修改</s:a>
49                 </td>
50             </tr>
51         </s:iterator>
52         </tbody>
53     </table>
54     
55     <!-- 其他功能超鏈接 -->
56     <div id="TableTail">
57         <div id="TableTail_inside">
58             <s:a action="department_addUI"><img src="${pageContext.request.contextPath}/style/images/createNew.png" /></s:a>
59         </div>
60     </div>
61 </div>
62 
63 <!--說明-->    
64 <div id="Description"> 
65     說明：<br />
66     1，列表頁面只顯示一層的（同級的）部門數據，默認顯示最頂級的部門列表。<br />
67     2，點擊部門名稱，可以查看此部門相應的下級部門列表。<br />
68     3，刪除部門時，同時刪除此部門的所有下級部門。
69 </div>
70 </body>
71 </html>

saveUI.jsp

 1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <%@ taglib prefix="s" uri="/struts-tags" %>
 3 <html>
 4 <head>
 5     <title>部門設置</title>
 6     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 7     <script language="javascript" src="${pageContext.request.contextPath}/script/jquery.js"></script>
 8     <script language="javascript" src="${pageContext.request.contextPath}/script/pageCommon.js" charset="utf-8"></script>
 9     <script language="javascript" src="${pageContext.request.contextPath}/script/PageUtils.js" charset="utf-8"></script>
10     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/style/blue/pageCommon.css" />
11 </head>
12 <body>
13 
14 <!-- 標題顯示 --> 
15 <div id="Title_bar">
16     <div id="Title_bar_Head">
17         <div id="Title_Head"></div>
18         <div id="Title"><!--頁面標題-->
19             <img border="0" width="13" height="13" src="${pageContext.request.contextPath}/style/images/title_arrow.gif"/> 部門信息
20         </div>
21         <div id="Title_End"></div>
22     </div>
23 </div>
24 
25 <!--顯示表單內容-->
26 <div id=MainArea>
27     <s:form action="department_%{id == null ? 'add' : 'edit'}"><!-- 提交到 -->
28     <s:hidden name="id"></s:hidden>
29     
30         <div class="ItemBlock_Title1"><!-- 信息說明<DIV CLASS="ItemBlock_Title1">
31             <IMG BORDER="0" WIDTH="4" HEIGHT="7" SRC="${pageContext.request.contextPath}/style/blue/images/item_point.gif" /> 部門信息 </DIV>  -->
32         </div>
33         
34         <!-- 表單內容顯示 -->
35         <div class="ItemBlockBorder">
36             <div class="ItemBlock">
37                 <table cellpadding="0" cellspacing="0" class="mainForm">
38                     <tr><td width="100">上級部門</td>
39                         <td><select name="parentId" class="SelectStyle">
40                                 <option value="0" selected="selected">請選擇部門</option>
41                                 <option value="7">┠總經理室</option>
42                                 <option value="1">┠市場部</option>
43                                 <option value="2">　┠咨詢部</option>
44                                 <option value="3">　┠招生部</option>
45                                 <option value="4">┠教學部</option>
46                                 <option value="5">┠后勤部</option>
47                             </select>
48                         </td>
49                     </tr>
50                     <tr><td>部門名稱</td>
51                         <td><s:textfield name="name" cssClass="InputStyle"/> *</td>
52                     </tr>
53                     <tr><td>職能說明</td>
54                         <td><s:textarea name="description" cssClass="TextareaStyle"></s:textarea></td>
55                     </tr>
56                 </table>
57             </div>
58         </div>
59         
60         <!-- 表單操作 -->
61         <div id="InputDetailBar">
62             <input type="image" src="${pageContext.request.contextPath}/style/images/save.png"/>
63             <a href="javascript:history.go(-1);"><img src="${pageContext.request.contextPath}/style/images/goBack.png"/></a>
64         </div>
65     </s:form>
66 </div>
67 
68 <div class="Description">
69     說明：<br />
70     1，上級部門的列表是有層次結構的（樹形）。<br/>
71     2，如果是修改：上級部門列表中不能顯示當前修改的部門及其子孫部門。因為不能選擇自已或自已的子部門作為上級部門。<br />
72 </div>
73 </body>
74 </html>

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