Struts2分为四类标签:控制标签、数据标签、表单标签、Ajax标签

都需要引入的标签

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

控制标签

IF和ELSE标签：IF标签可以单独使用、也可以与ELSE IF标签连用，

<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>

ITERATOR标签：

<s:iterator value=\"days\">
  <p>day is: <s:property/></p>
</s:iterator>

MERGE标签：

<s:merge var=\"myMergedIterator\">
     <s:param value=\"%{myList1}\" />
     <s:param value=\"%{myList2}\" />
     <s:param value=\"%{myList3}\" />
</s:merge>

APPEND标签：

<s:append var=\"myAppendIterator\">
     <s:param value=\"%{myList1}\" />
     <s:param value=\"%{myList2}\" />
     <s:param value=\"%{myList3}\" />
</s:append>

GENERATOR标签：

<s:generator val=\"%{\'aaa,bbb,ccc,ddd,eee\'}\">
    <s:iterator>
        <s:property /><br/>
    </s:iterator>
</s:generator>

数据标签

ACTION标签

<s:action name=\"actionTagAction\" executeResult=\"true\" />

INCLUDE标签

<-- First Syntax -->
<s:include value=\"myJsp.jsp\" />

<-- Second Syntax -->
<s:include value=\"myJsp.jsp\">
   <s:param name=\"param1\" value=\"value2\" />
   <s:param name=\"param2\" value=\"value2\" />
</s:include>

<-- Third Syntax -->
<s:include value=\"myJsp.jsp\">
   <s:param name=\"param1\">value1</s:param>
   <s:param name=\"param2\">value2</s:param>
</s:include

BEAN标签

<s:bean name=\"org.apache.struts2.util.Counter\" var=\"counter\">
   <s:param name=\"first\" value=\"20\"/>
   <s:param name=\"last\" value=\"25\" />
</s:bean>

DATE标签

<s:date name=\"person.birthday\" format=\"dd/MM/yyyy\" />
<s:date name=\"person.birthday\" format=\"%{getText(\'some.i18n.key\')}\" />
<s:date name=\"person.birthday\" nice=\"true\" />
<s:date name=\"person.birthday\" />

 param标签

<pre>
    <ui:component>
        <ui:param name=\"key\"     value=\"[0]\"/>
        <ui:param name=\"value\"   value=\"[1]\"/>
        <ui:param name=\"context\" value=\"[2]\"/>
    </ui:component>
</pre>

 property标签

<s:push value=\"myBean\">
    <!-- Example 1: -->
    <s:property value=\"myBeanProperty\" />

    <!-- Example 2: -->TextUtils
    <s:property value=\"myBeanProperty\" default=\"a default value\" />
</s:push>

 push标签

<s:push value=\"user\">
    <s:propery value=\"firstName\" />
    <s:propery value=\"lastName\" />
</s:push>

set标签

<s:set name=\"myenv\" value=\"environment.name\"/>
<s:property value=\"myenv\"/>

 text标签

<!-- First Example -->
<s:i18n name=\"struts.action.test.i18n.Shop\">
    <s:text name=\"main. \"/>
</s:i18n>

<!-- Second Example -->
<s:text name=\"main. \" />

<!-- Third Examlpe -->
<s:text name=\"i18n.label.greetings\">
   <s:param >Mr Smith</s:param>
</s:text>

 url标签

<-- Example 1 -->
<s:url value=\"editGadget.action\">
    <s:param name=\"id\" value=\"%{selected}\" />
</s:url>

<-- Example 2 -->
<s:url action=\"editGadget\">
    <s:param name=\"id\" value=\"%{selected}\" />
</s:url>

<-- Example 3-->
<s:url includeParams=\"get\">
    <s:param name=\"id\" value=\"%{\'22\'}\" />
</s:url>

表单标签

body中的内容

<!--简单UI标签-->
<s:div>Email Form</s:div>
<s:text name=\"Please fill in the form below:\" />
<s:form action=\"hello\" method=\"post\" enctype=\"multipart/form-data\">
    <s:hidden name=\"secret\" value=\"abracadabra\"/>
    <s:textfield key=\"email.from\" name=\"from\" />
    <s:password key=\"email.password\" name=\"password\" />
    <s:textfield key=\"email.to\" name=\"to\" />
    <s:textfield key=\"email.subject\" name=\"subject\" />
    <s:textarea key=\"email.body\" name=\"email.body\" />
    <s:label for=\"attachment\" value=\"Attachment\"/>
    <s:file name=\"attachment\" accept=\"text/html,text/plain\" />
    <s:token />
    <s:submit key=\"submit\" />
</s:form>
<!--群组UI标签-->
<s:form action=\"hello.action\">
<s:radio label=\"Gender\" name=\"gender\" list=\"{\'male\',\'female\'}\" />
<s:checkboxlist label=\"Hobbies\" name=\"hobbies\"
    list=\"{\'sports\',\'tv\',\'shopping\'}\" />
</s:form>
<!--选择UI标签-->
<s:form action=\"login.action\">
    <s:select name=\"username\" label=\"Username\" list=\"{\'Mike\',\'John\',\'Smith\'}\" />
    <s:select label=\"Company Office\" name=\"mySelection\" value=\"%{\'America\'}\"
        list=\"%{#{\'America\':\'America\'}}\">
    <s:optgroup label=\"Asia\" list=\"%{#{\'India\':\'India\',\'China\':\'China\'}}\" />
    <s:optgroup label=\"Europe\"
        list=\"%{#{\'UK\':\'UK\',\'Sweden\':\'Sweden\',\'Italy\':\'Italy\'}}\" />
    </s:select>

    <s:combobox label=\"My Sign\" name=\"mySign\"
        list=\"#{\'aries\':\'aries\',\'capricorn\':\'capricorn\'}\"
        headerKey=\"-1\" headerValue=\"--- Please Select ---\" emptyOption=\"true\"
        value=\"capricorn\" />
    <s:doubleselect label=\"Occupation\" name=\"occupation\"
        list=\"{\'Technical\',\'Other\'}\" doubleName=\"occupations2\"
        doubleList=\"top == \'Technical\' ? 
        {\'I.T\', \'Hardware\'} : {\'Accounting\', \'H.R\'}\" />
</s:form>

Ajax标签

需要引入的标签

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

body中的内容

<s:form>
    <sx:autocompleter label=\"Favourite Colour\" list=\"{\'red\',\'green\',\'blue\'}\" />
    <br />
    <sx:datetimepicker name=\"deliverydate\" label=\"Delivery Date\"
        displayFormat=\"dd/MM/yyyy\" />
    <br />
    <s:url id=\"url\" value=\"/hello.action\" />
    <sx:div href=\"%{#url}\" delay=\"2000\">
        Initial Content
    </sx:div>
    <br/>
    <sx:tabbedpanel id=\"tabContainer\">
        <sx:div label=\"Tab 1\">Tab 1</sx:div>
        <sx:div label=\"Tab 2\">Tab 2</sx:div>
    </sx:tabbedpanel>
</s:form>