Struts标签与OGNL表达式语言实例演练

来源：互联网发布：linux top res 编辑：程序博客网时间：2024/04/30 22:02

项目结构如图：

主要类文件如下：

AdminAction.java

public class AdminAction extends ActionSupport{/** *  */private static final long serialVersionUID = 1L;private Admin admin;public Admin getAdmin() {return admin;}public void setAdmin(Admin admin) {this.admin = admin;}public String Login(){//        使用request存值ActionContext actionContext = ActionContext.getContext();actionContext.put("Lili", "你好！");// 使用session存值  actionContext.getSession().put("Jenny", "你好Jenny");// 使用application存值  actionContext.getApplication().put("Nike", "谢谢Nike");// 存入对象//        使用request存值 actionContext.put("admin", admin);// 使用session存值  actionContext.getSession().put("admin", admin);// 使用application存值  actionContext.getApplication().put("admin", admin);  return "adminaction_login";}public String save(){         System.out.println("保存成功！！！！！！");return "adminaction_save";}public String delete(){System.out.println("删除成功！！！！！！");return "adminaction_delete";}public String update(){System.out.println("修改成功！！！！！！");return "adminaction_update";}public String find(){System.out.println("查询成功！！！！！！");return "adminaction_find";}}

Admin.java

public class Admin {  private String userName;  private String userPassword;public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getUserPassword() {return userPassword;}public void setUserPassword(String userPassword) {this.userPassword = userPassword;}    }

struts.xml

<struts>    <package name="struts" namespace="/csdn" extends="struts-default" >        <!--          使用通配符进行测试！         -->         <action name="*_*" class="www.csdn.net.action.{1}" method="{2}">              <result name="adminaction_loginError" type="dispatcher">/manager/ErrorNormal.jsp </result>         <result name="adminaction_login" type="dispatcher">/manager/Login.jsp </result>         <result name="adminaction_save" type="dispatcher">/manager/Save.jsp </result>         <result name="adminaction_delete" type="dispatcher">/manager/Delete.jsp </result>         <result name="adminaction_update" type="dispatcher">/manager/Update.jsp </result>         <result name="adminaction_find" type="dispatcher">/manager/Find.jsp </result>       </action>    </package></struts>

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s" %><html>  <body style="text-align: center">      <h2>这是第一个使用structs2标签开发的应用测试实例！</h2>      <s:form action="AdminAction_Login" namespace="/csdn" method="post">      <s:textfield name="admin.userName" label="用户名："></s:textfield>      <s:password name="admin.userPassword" label="密码："></s:password>      <s:submit  value="登陆"></s:submit>       <s:reset value="重置"></s:reset>         </s:form>  </body></html>

主要实例演示：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s" %><html>  <head>    <base href="<%=basePath%>">        <title>My JSP 'Login.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page">   <style type="text/css">   .even{      background-color:red;    }.odd{      background-color:blue;    }   </style>      </head>    <body style="text-align: center">  <<<<<---------------------------------------------------------------->>>>>  <h2>这是第一个使用structs2标签和设置session属性对象开发的应用测试实例！</h2>  <h3>${admin.userName}用户登陆成功！！！</h3><br/>  <hr/>  <h3>使用ongl标签输出存入不同作用域中的值：</h3>  输出request作用域中存入的信息：         <s:property value = "#request.Lili"/>         <br/>   输出sesion作用域中存入的信息：         <s:property value = "#session.Jenny"/>         <br/>    输出application作用域中存入的信息：         <s:property value = "#application.Nike"/>          <s:debug></s:debug>         <hr/>         <h3>使用ongl标签输出存入不同作用域中的对象值：</h3>           输出request作用域中存入的信息：         <s:property value = "#admin.userName"/>         <br/>          输出sesion作用域中存入的信息：         <s:property value = "#admin.userName"/>         <br/>          输出application作用域中存入的信息：         <s:property value = "#admin.userName"/>         <s:debug></s:debug>         <hr/>         <h3>使用struts标签构建Map</h3>         <s:iterator var="map" value="#{1:'lihuihui',2:'李晖晖'}">               <s:property value="key"/>             <s:property value="value"/>               <br/>             </s:iterator>            <hr/>           <s:iterator var="map" value="#{1:'lihuihui',2:'李晖晖'}">                          <s:property value="#map.key"/>             <s:property value="#map.value"/>              <br/>            </s:iterator>                       <hr/>              <h3>使用struts标签构建List</h3>              方式一：<br/>               <s:iterator var="list" value="{'Java','.NET','PHP'}">               <s:property value="list"/>              <br/>            </s:iterator>          方式二：<br/>               <s:iterator var="list" value="{'Java','.NET','PHP','3G'}">               <s:property />              <br/>            </s:iterator>            <hr/>          <h3>使用struts标签构建单选按钮</h3>          方式一：<br/>            <s:radio list="#{'m':'男','w': '女'}" listKey="key" listValue="value"></s:radio><br/>             键值互换：              方式二：<br/>             <s:radio list="#{'m':'男','w': '女'}" listKey="value" listValue="key"></s:radio>             <br/>             方式三：<br/>                         <s:radio list="#{'1':'男','0': '女'}" value ="'0'"></s:radio>            <br/>             方式四：<br/>                         <s:radio list="{'男', '女'}"  value ="'男'"></s:radio>            <br/>                <hr/>          <h3>使用struts标签构建复选框</h3>            方式一：          <s:checkbox name="fav" label="看书"/>           <s:checkbox name="fav" label="写字"/>            <s:checkbox name="fav" label="画画"/>            <s:checkbox name="fav" label="打球"/>            <br/>             方式二：             <s:checkboxlist name = "fav" list="{'看书','写字','画画','打球'}"  value ="'写字','画画'"></s:checkboxlist>           <br/>            方式三：            <s:checkboxlist  name ="fav" list="#{1:'看书',2:'写字',3:'打球'}" value="{1,2}"></s:checkboxlist>            <br/>            <hr/>          <h3>使用struts标签构建下拉列表框</h3>          方式一：<br/>          <s:select label="月份" list="#{1:'Jan',2:'Feb',3:'Mar',4:'Apr'}" headerValue="选择月份" headerKey="-1"  required="true"></s:select>          <br/>           方式二：<br/>           <s:select label="月份" list="#{1:'Jan',2:'Feb',3:'Mar',4:'Apr'}" headerValue="选择月份" headerKey="-1"  value="'4'" required="false"></s:select>             <br/>           方式三：<br/>           <s:select label="专业" list="{'Java','.NET','3G','PHP'}" headerValue="选择专业" headerKey="-1"  value="'PHP'" required="false"></s:select>            方式四：<br/>           <s:select label="专业" list="{'Java','.NET','3G','PHP'}"   value="'PHP'" ></s:select>             <hr/>             <h3>使用struts标签构建if/else/in/not in</h3>                    <s:if test="'Java' not in {'3G','Java'}">                  Java is not in list!              </s:if>              <s:else>   Java is in list!</s:else>              <hr/>            <h3>使用struts标签中的set对属性进行存值</h3>            <s:set var="user" value="你好用户！<br/>" scope="request"></s:set>              <s:property value="#user" escape="false"/>               <hr/>            <h3>使用struts标签中的push对属性进行存值</h3>              <s:push value="'lihuihui'">              <s:property/>              </s:push>                 <hr/>            <h3>使用struts标签中的bean对实体进行赋值并进行存取值</h3>              <s:bean name="www.csdn.net.domain.Admin"  var = "myAdmin">               <s:param name="userName">李晖晖</s:param>                <s:param name="userPassword">12345</s:param>                输出姓名：                  <s:property value="userName"/>                             </s:bean>              <br/>              输出1：<s:property value="#myAdmin.userName"/>             <br/>              输出2：              <s:set var="admin" value = "#myAdmin"></s:set>              <s:property value="#admin.userName"/>              <hr/>         <h3>使用struts标签中的迭代实现表格的变色输出！</h3>         <table border = "1px">            <s:iterator var = "tb" value ="{'Java','.NET','PHP','3G'}"  status="st">              <tr class = "<s:property value = '#st.even?"even":"odd"'/>">                <td>                  <s:property value ="tb"/>                </td>              </tr>            </s:iterator>         </table>                </body></html>

效果如图：