Struts2学习之路（七）—— Struts2标签

最新推荐文章于 2024-08-07 18:47:37 发布

转载最新推荐文章于 2024-08-07 18:47:37 发布 · 57 阅读

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原文链接：http://www.cnblogs.com/denisechen/p/4683026.html

本文详细介绍了如何使用Struts2标签库的标签，包括属性标签、UI标签和Ajax标签的应用实例，以及如何在实际项目中进行整合与实践。

1.如何使用Strut2标签库的标签？

在JSP页面的源码顶部中加入代码

<%@ taglib uri="/struts-tags" prefix="s"  %>

2.标签分类及使用：

（1）属性标签

a)控制标签

if
elseif
else
append
generator
iterator
merge
sort
subset

示例代码：

I. if elseif else

<s:if test="%{false}">
    <div>Will Not Be Executed</div>
</s:if>
<s:elseif test="%{true}">
    <div>Will Be Executed</div>
</s:elseif>
<s:else>
    <div>Will Not Be Executed</div>
</s:else>

II. sort

<!-- 示例1 -->
<s:sort comparator="myComparator" source="myList">
     <s:iterator>
     <!-- do something with each sorted elements -->
     <s:property value="..." />
     </s:iterator>
</s:sort>
 
<!-- 示例2 -->
<s:sort var="mySortedList" comparator="myComparator" source="myList" />
 
<%
   Iterator sortedIterator = (Iterator) pageContext.getAttribute("mySortedList");
   for (Iterator i = sortedIterator; i.hasNext(); ) {
     // do something with each of the sorted elements
   }
%>

b)数据标签

a
action
bean
date
debug
i18n
include
param
property
push
set
text
url

示例代码：

I. a

<s:url var="testUrlId" namespace="/subscriber" action="customField" method="delete">
    <s:param name="customFieldDefinition.id" value="${id}"/>
</s:url>
<s:a errorText="Sorry your request had an error." preInvokeJS="confirm('Are you sure you want to delete this item?')" href="%{testUrlId}">
    <img src="<s:url value="/images/delete.gif"/>" border="none"/>
</s:a>
 
<img xsrc="<s:url value="/images/delete.gif"/>" border="none"/><s:a><img xsrc="<s:url value="/images/delete.gif"/>" border="none"/></s:a>

II. bean

<-- in freemarker form -->
[@s.bean name="org.apache.struts2.example.counter.SimpleCounter" var="counter"]
  [s:param name="foo" value="BAR"/]
  The value of foo is : [s:property value="foo"/], when inside the bean tag.<br />
[/s:bean]
 
<-- in jsp form -->
<s:bean name="org.apache.struts2.example.counter.SimpleCounter" var="counter">
  <s:param name="foo" value="BAR" />
  The value of foot is : <s:property value="foo"/>, when inside the bean tag <br />
</s:bean>

III. i18n

<s:i18n name="myCustomBundle">
   The i18n value for key aaa.bbb.ccc in myCustomBundle is <s:property value="text('aaa.bbb.ccc')" />
</s:i18n>

VI. textfield

<s:textfield name="lastName" label="<s:text name="person.lastName"/>" ../>

（2）UI标签

a）表格标签

checkbox
checkboxlist
combobox
datetextfield
doubleselect
head
file
form
hidden
inputtransferselect
label
optiontransferselect
optgroup
password
radio
reset
select
submit
textarea
textfield
token
updownselect

b）非表格标签

actionerror
actionmessage
component
div
fielderror

c）Ajax标签

a
autocompleter
bind
datetimepicker
div
head
submit
tabbedPanel
textarea
tree
treenode

转载于:https://www.cnblogs.com/denisechen/p/4683026.html