struts标签

配置：
 * 在struts-config.xml文件中加入
 <message-resources parameter="MessageResources" />
 * 拷贝MessageResources.properties文件到src下
使用：
 * 采用taglib指令引入
 <%@ taglib prefix="bean" uri="http://struts.apache.org/tags-bean"%>   
 <%@ taglib prefix="logic" uri="http://struts.apache.org/tags-logic"%>

 

<bean:write>标签

//普通属性
  request.setAttribute("hello", "Hello World");  

  hello(标签):<bean:write name="hello"/>

 

//html文本
  request.setAttribute("bj", "<font color='red'>北京欢迎您</font>");

  bj(filter="false"):<bean:write name="bj" filter="false"/>

//日期
  request.setAttribute("today", new Date()); 

  today：<bean:write name="today" format="yyyy-MM-dd HH:mm:ss"/>
//数字
  request.setAttribute("n", 123456.987); 

  n:<bean:write name="n" format="###,###.####"/>

  n:<bean:write name="n" format="###,###.0000"/>

//结构
  Group group = new Group();
  group.setName("尚学堂");
  User user = new User();
  user.setUsername("张三");
  user.setAge(18);
  user.setGroup(group);
  request.setAttribute("user", user);

<input type="text" value="<bean:write name="user" property="username"/>">

<input type="text" value="<bean:write name="user" property="age"/>">

<input type="text" value="<bean:write name="user" property="group.name"/>">

 

<logic:empty >与<logic:iterate >标签 

    Group group = new Group();
    group.setName("尚学堂");
  
    List userList = new ArrayList();
    for (int i=0; i<10; i++) {
         User user = new User();
         user.setUsername("user_" + i);
         user.setAge(18+i);
         user.setGroup(group);
         userList.add(user);
  }
  request.setAttribute("userlist", userList);

 

<logic:empty name="userlist">
   没有符合条件的数据!     

</logic:empty>

  <logic:notEmpty name="userlist">
   <logic:iterate id="u" name="userlist">
         <bean:write name="u" property="username"/>
           <bean:write name="u" property="age"/>
           <bean:write name="u" property="group.name"/>
       </logic:iterate>
  </logic:notEmpty>