测试map迭代时元素在栈顶

  1. 页面上迭代map

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    public String showMap() {
    	Department department = new Department();
    	department .setName("华沙");
    	Map<String, Department> map = new HashMap<String, Department>();
    	map.put("m1", department);
    	ActionContext.getContext().put("map", map);
    	return listAction;
    }
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    <!-- 
    				Map<String,Department>
    				map中含有Strign，Department
    -->
    <s:iterator value="#map">
    	<s:property value="key"/>
    	<s:property value="value.name"/>
    </s:iterator>

  2. list中包含map进行迭代

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    public String showListMap() {
    	List<Map<String, Department>> list = new ArrayList<Map<String,Department>>();
    	Map<String, Department> map = new HashMap<String, Department>();
    	Department department = new Department();
    	department.setName("沙耶香");
    	map.put("M1", department);
    	list.add(map);
    	ActionContext.getContext().put("listMap", list);
    	return listAction;
    }
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    <!-- 
    				List<Map<String,Department>>
     -->
     <s:iterator value="#listMap">
    <!-- 
    list集合中当前迭代的元素在栈顶，所以map在栈顶，如果s:iterator中的value属性不写，默认迭代栈顶的元素
    map的key为M1 这里可不写
    -->
    	<s:iterator>
    		<s:property value="key"/>
    		<s:property value="value.name"/>
    	</s:iterator>
    </s:iterator>

  3. map中包含list进行迭代

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    public String showMapList() {
    	Map<String, List<Department>> map = new HashMap<String, List<Department>>();
    	List<Department> list = new ArrayList<Department>();
    	Department department = new Department();
    	department.setName("宫水三叶");
    	list.add(department);
    	map.put("list1", list);
    	ActionContext.getContext().put("maplist", map);
    	return listAction;
    }
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    <!-- 
    Map<String,List<Department>>
    -->
    <s:iterator value="#maplist">
    	<s:property value="key"/>
    		<s:iterator value="value">
    			<s:property value="name"/>
    	</s:iterator>
    </s:iterator>

  4. list中包含map，map中包含list进行迭代

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    public String showListMapList() {
    	List<Map<String, List<Department>>> list = new ArrayList<Map<String,List<Department>>>();
    	
    	Department department = new Department();
    	department.setName("立花泷");
    	List<Department> dList = new ArrayList<Department>();
    	dList.add(department);
    	
    	Map<String, List<Department>> map = new HashMap<String, List<Department>>();
    	map.put("map1", dList);
    	list.add(map);
    	ActionContext.getContext().put("listMapList", list);
    	return listAction;
    }
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     <!-- 
    List<Map<String,List<Department>>>
    -->
    <s:iterator value="#listMapList">
    	<s:iterator>
    		<s:property value="key"/>
    		<s:iterator value="value">
    			 <s:property value="name"/>
    		</s:iterator>
    	</s:iterator>
    </s:iterator>

部门模块添加注意事项

  1. 在添加页面add.jsp中

    • 在form表单中，必须使用struts2的标签

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      <s:form action="departmentAction_add.action">
          <s:textfield name="name" cssClass="InputStyle"></s:textfield>
      </s:form>

  2. 在后台action中：

    • 模型驱动
      1. 获取表单中的数据
      2. 把数据放在模型驱动中用于数据回显
      3. 一般情况下不要把模型驱动传递到dao层

部门模块的增加

  1. 修改list.jsp文件

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    <!-- 其他功能超链接 -->
    <div id="TableTail">
     <div id="TableTail_inside">
      <a href="departmentAction_addUI.action">	 <imgsrc="${pageContext.request.contextPath}/css/images/createNew.png" />
      </a>
     </div>
    </div>

  2. DepartmentAction增加方法

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    public String addUI() {
    	return addUI;
    }

  3. 修改struts-department.xml文件

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    <package name="department" namespace="/" extends="struts-default">
    	<action name="departmentAction_*" method="{1}" class="departmentAction">
    		<result name="listAction">/WEB-INF/jsp/system/department/list.jsp</result>
    		<result name="addUI">/WEB-INF/jsp/system/department/add.jsp</result>
    	</action>
    </package>

  4. 编写add.jsp文件

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    <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    <%@ include file="/WEB-INF/jsp/common/common.jsp" %>
    <html>
    <head>
    	<title>部门设置</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    </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}/css/images/title_arrow.gif"/> 部门信息
            </div>
            <div id="Title_End"></div>
        </div>
    </div>

    <!--显示表单内容-->
    <div id=MainArea>
        <s:form action="departmentAction_add.action">
            <div class="ItemBlock_Title1"><!-- 信息说明<DIV CLASS="ItemBlock_Title1">
            	<IMG BORDER="0" WIDTH="4" HEIGHT="7" SRC="${pageContext.request.contextPath}/css/blue/images/item_point.gif" /> 部门信息 </DIV>  -->
            </div>
            
            <!-- 表单内容显示 -->
            <div class="ItemBlockBorder">
                <div class="ItemBlock">
                    <table cellpadding="0" cellspacing="0" class="mainForm">
                        <tr><td>部门名称</td>
                            <td><s:textfield name="name" cssClass="InputStyle"></s:textfield></td>
                        </tr>
                        <tr><td>职能说明</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="${pageContext.request.contextPath}/css/images/save.png"/>
                <a href="javascript:history.go(-1);"><img src="${pageContext.request.contextPath}/css/images/goBack.png"/></a>
            </div>
        </s:form>
    </div>

    <div class="Description">
    	说明：<br />
    	1，上级部门的列表是有层次结构的（树形）。<br/>
    	2，如果是修改：上级部门列表中不能显示当前修改的部门及其子孙部门。因为不能选择自已或自已的子部门作为上级部门。<br />
    </div>

    </body>
    </html>

  5. DepartmentService接口修改 增加方法

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    public void saveDepartment(Department department);

  6. DepartmentServiceImpl实现类修改 增加方法

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    @Transactional(readOnly=false)
    public void saveDepartment(Department department) {
    	this.departmentDao.saveEntry(department);
    }

  7. action增加方法

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    public String add() {
    	Department department = new Department();
    	/*
    	 * 把model的值赋值给department
    	 */
    	BeanUtils.copyProperties(this.getModel(), department);
    	this.departmentService.saveDepartment(department);
    	return action2action;
    }

  8. 修改struts-department.xml配置文件

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    <package name="department" namespace="/" extends="struts-default">
    	<action name="departmentAction_*" method="{1}" class="departmentAction">
    		<result name="listAction">/WEB-INF/jsp/system/department/list.jsp</result>
    		<result name="addUI">/WEB-INF/jsp/system/department/add.jsp</result>
    		<result name="action2action" type="redirectAction">departmentAction_showAllDepartment.action</result>
    	</action>
    </package>

  9. 增加测试类DepartmentTest测试后台代码是否可用

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    @Test
    public void testSessionFactory() {
    	ApplicationContext context = new ClassPathXmlApplicationContext("spring/applicationContext.xml");
    	DepartmentService departmentService = (DepartmentService)context.getBean("departmentService");
    	Department department = new Department();
    	department.setName("技术部");
    	department.setDescription("大佬多");
    	departmentService.saveDepartment(department);
    }

    @Test
    //测试方法 会报异常
    public void Test() {
    	ApplicationContext context = new ClassPathXmlApplicationContext("spring/applicationContext.xml");
    	SessionFactory sessionFactory = (SessionFactory) context.getBean("sessionFactory");
    	Session session = sessionFactory.openSession();
    	Transaction transaction = session.beginTransaction();
    	
    	Department department =(Department) session.get(Department.class, 1L);
    	
    	Department department2 = new Department();
    	department2.setDid(1L);
    	department2.setDescription("abc");
    	
    	session.update(department2);
    	transaction.commit();
    	session.close();
    }