struts 二 tag _Web前端

struts 2 tag

近学习? Struts 2.1 Tags 做了些笔记，贴出来大家一起学习下，希望大家多多交流。

别的都不说了，我就贴代码，代码里注释比较详细，呵呵。

文件目录，如下：

?index.jsp 代码

Java代码 ?

<%@?page?language="java"?import="java.util.*"?pageEncoding="UTF-8"%>??
<%@page?import="com.rao.bean.Sex"%>??
<%@?taglib?prefix="s"?uri="/struts-tags"%>??
<%@?taglib?prefix="sx"?uri="/struts-dojo-tags"%>??
<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">??
<html>??
<head>??
??<title>My?page</title>??
??<s:head?theme="xhtml"/>??
??<sx:head?parseContent="true"/>??
</head>??
??
??<body>??
????Struts?2.1?Tags??
???? ??
???? ??
????一、控制标签 <hr?size="3"?color="red">??
??????
?????#、if?/elseif/?else?@用于逻辑判断 ??
?????<s:set?name="bir"?value="-12"></s:set>??
?????<s:if?test="#bir>=180?||?#bir<0">??
????????你是何方妖怪？??
?????</s:if>??
?????<s:elseif?test="#bir<=18?&&?#bir>=0">??
????????未成年人不能进入！??
?????</s:elseif>??
?????<s:elseif?test="#bir<=60?&&?#bir>=18">??
????????您已经成年！??
?????</s:elseif>??
?????<s:else>??
????????您已经老了！??
?????</s:else>??
????? -------------------------- ??
?????#、append?@用于将多个集合合并 ??
?????<s:set?name="appList1"?value="{'111','222','333','444'}"></s:set>??
?????<s:set?name="appList2"?value="{'aaa','bbb','ccc','ddd'}"></s:set>??
?????<s:append?var="newAppList">??
????????<s:param?value="appList1"></s:param>??
????????<s:param?value="appList2"></s:param>??
?????</s:append>??
?????<s:iterator?value="#newAppList">??
????????<s:property/>?|???
?????</s:iterator>??
?????? -------------------------- ??
?????#、generator?? ??
?????generator 标签，该标签可以将指定字符串按指定分隔符分割成多个字串。生成的多个字串可以用iterator标签进行迭代输出。可以这么理解：generator标签将一个字符串转换成一个List集合。在该标签体内，整个临时生成的集合将为Valuestack的顶端，但一旦该标签结束，生成的集合将被移除 Valuestack。generator标签有如下几个属性：??
???? ??
????1、count属性：指定生成集合中元素的总数。可选属性。 ??
??????
????2、val属性：必填属性，指定被解析的字符串。 ??
??????
????3、separator属性：这是一个必填属性，指定用于分割字符串的分隔符。 ??
??????
????4、 converter属性：可选属性，指定一个转换器，转换器负责将生成的集合中的每个字符串转换成对象，通过这个转换器可以将一个含有分隔符的字符串解析成对象的集合。转换器必须一个继承org.apache.struts2.util.IteratorGenerator.Converter的对象。??
???? ??
????5、var属性，可选属性。如果指定了该属性，则将生成的集合保存在Stack?Context中。如果不指定该属性，则将生成的集合放入ValueStack的顶端，该标签一结束，生成的集合就被移除。该属性也可替换成id。??
???? ??
?????<s:generator??val="'aaa,bbb,ccc,ddd'"??separator=","?count="2">??
????????<s:iterator>??
????????????<s:property/>??
????????</s:iterator>??
?????</s:generator> ??
??
?????? -------------------------- ??
?????#、iterator?用于迭代数据 ??
?????<s:set?name="iterList"?value="{'aaa','bbb','ccc','ddd'}"></s:set>??
?????<table?border="1">??
?????<tr>?????
????????????????<td>???索引???</td>?????
????????????????<td>???值???</td>?????
????????????????<td>???奇？???</td>?????
????????????????<td>???偶？????</td>?????
????????????????<td>???首？????</td>?????
????????????????<td>???尾？????</td>?????
????????????????<td>??当前迭代数量????</td>?????
????????????</tr>?????
???????
????????<s:iterator?value="{'aaa','bbb','ccc','ddd','eee','fff'}"?begin="1"?status="s">??
????????????<tr?bgcolor="<s:if?test="#s.odd">pink</s:if>">??
????????????????<td><s:property?value="#s.index"/></td>??
????????????????<td><s:property/></td>??
????????????????<td><s:property?value="#s.even"/></td>??
????????????????<td><s:property?value="#s.odd"/></td>??
????????????????<td><s:property?value="#s.first"/></td>??
????????????????<td><s:property?value="#s.last"/></td>??
????????????????<td><s:property?value="#s.count"/></td>??
????????????</tr>??
????????</s:iterator>????????
?????</table>??
???????
???????
?????? -------------------------- ??
?????#、merge?@和类似：用于将多个集合合并 ??
?????<s:set?name="merList1"?value="{'111','222','333','444'}"></s:set>??
?????<s:set?name="merList2"?value="{'aaa','bbb','ccc','ddd'}"></s:set>??
?????<s:append?var="newMerList">??
????????<s:param?value="merList1"></s:param>??
????????<s:param?value="merList2"></s:param>??
?????</s:append>??
?????<s:iterator?value="#newMerList">??
????????<s:property/>?|???
?????</s:iterator>??
?????? -------------------------- ??
?????#、sort?@用于排序 ??
?????<s:bean?var="myComparator"?name="com.rao.comparator.MyComparator"></s:bean>??
?????<s:sort?comparator="#myComparator"?source="{1,45,56,0,345,3}">??
????????<s:iterator>??
????????????<s:property/>,??
????????</s:iterator>??
?????</s:sort>??
?????? -------------------------- ??
?????#、subset?@用户截取集合中的子集;???注：decider:可选属性,指定由开发者自己决定是否选中该元素.????
????? ??
?????<s:set?name="subList"?value="{'@@@','***','&&&','###'}"></s:set>??
?????<s:subset?source="#subList"?start="1"?count="2">??
????????<s:iterator>??
????????????<s:property/>,??
????????</s:iterator>??
?????</s:subset>??
?????? -------------------------- ??
???????二、数据标签 ??
??????<hr?size="3"?color="red">??
????#、action?@用于导入一个Action ??
????使用action标签,可以允许在jsp页面中直接调用Action,在调用Action时候,可以指定需要被调用的Action的name和namespace.如果指定了executeResult参数的属性值为true,该标签会把Action的处理结果(视图资源)包含到本页面中.?使用action标签指定属性有:??
???? ??
????id:?可选属性,作为该Action的引用ID??? ???
?????
????name:必选属性,指定调用Action???? ??
?????????
????namespace:可选属性,指定该标签调用Action所属namespace???? ??
?????????
????executeResult:可选属性,指定是否将Action的处理结果包含到本页面中.默认值为false,不包含.???? ??
?????????
????ignoreContextParam:可选参数,指定该页面的请求参数是否需要传入调用的Action中,默认值是false,即传入参数. ??
??????
????s:param是以request方式的值的,而不是以参数传值,所以request.getParameter("")会获取不到值,通过request.getAttribute("")方式可以获取 ??
??
????<s:action?name="tagsAction1"?ignoreContextParams="true"?executeResult="true"?namespace="/com/rao">??
????????<s:param?name="userName"?value="'三毛'"></s:param>??
????</s:action>??
??????
?????? -------------------------- ??
????#、bean?@用于导入一个javaBean,相当于：jsp:useBean?标签 ??
????<s:bean?name="com.rao.bean.UserBean"?var="user">??
????????<s:param?name="userId"?value="1001"></s:param>??
????????<s:param?name="userName"?value="'张三'"></s:param>??
????</s:bean>??
????userId:<s:property?value="#user.userId"/> ??
????userName:<s:property?value="#user.userName"/>??
?????? -------------------------- ??
????#、date?@用于格式化日期 ??
????<s:set?name="dt"?value="new?java.util.Date()"></s:set>??
????当期系统时间是：<s:date?name="dt"?format="yyyy-MM-dd?HH:ss:mm"/>??
?????? -------------------------- ??
????#、debug?@用于调试程序，让开发人员一目了然的知道当前请求、值栈、栈中的各项参数 ??
????<s:debug/>??
?????? -------------------------- ??
????#、i18n?@用于访问国际化资源文件的内容 ??
????????????????1.默认访问全局范围内的资源文件；??
???????????????? ??
????????????????<s:text?name="welcome">??
????????????????????<s:param>三毛</s:param>??
????????????????????<s:param>学习</s:param>??
????????????????</s:text>??
??????????
????????????????<hr>??
????????????????2.访问包范围内的资源文件；??
???????????????? ??
????????????????<s:i18n?name="com/rao/action/package">??
????????????????????<s:text?name="welcome">??
????????????????????????<s:param>三毛</s:param>??
????????????????????????<s:param>学习</s:param>??
????????????????????</s:text>??
????????????????</s:i18n>??
????????????????<hr>??
????????????????3.访问Action范围内的资源文件；??
???????????????? ??
????????????????<s:i18n?name="com/rao/action/GlobalNativeAction">??
????????????????????<s:text?name="welcome">??
????????????????????????<s:param>三毛</s:param>??
????????????????????????<s:param>学习</s:param>??
????????????????????</s:text>??
????????????????</s:i18n>??
?????? -------------------------- ??
????#、include?@用于导入一个jsp文件,等同于：jsp：include标签 ??
????<s:include?value="success.jsp"></s:include>??
?????? -------------------------- ??
????#、param?@用于给指定参数设置值 ??
????<s:bean?name="com.rao.bean.UserBean"?var="user">??
????????<s:param?name="userId"?value="1001"></s:param>??
????????<s:param?name="userName"?value="'张三'"></s:param>??
????</s:bean>??
????userId:<s:property?value="#user.userId"/> ??
????userName:<s:property?value="#user.userName"/>??
?????? -------------------------- ??
????#、property?@输出结果，很像EL表达式,但是可以依托于OGNL表带是很强大 ??
????同上??
?????? -------------------------- ??
????#、push?@该标签可以把程序员在ActionContext中引用的对像压入valuestack中，为以后访问对象提供了方便 ??
????<s:push?value="#request.user"><s:property?value="userName"/></s:push>??
?????? -------------------------- ??
????#、set?@用户声明对象或属性 ??
????<s:set?name="uName"?value="#request.user.userName"></s:set>??
????<s:property?value="#uName"/>，你好啊！??
?????? -------------------------- ??
????#、text?@用户获取国际化资源文件的内容 ??
????请参考?il8n标签??
?????? -------------------------- ??
????#、url?@用于组拼一个请求路径 ??
????<s:url?var="url1"?action="MyAction"?method="add">??
????????<s:param?name="id"?value="%{23}"></s:param>??
????????<s:param?name="name"?value="%{'tom'}"></s:param>??
????</s:url>??
????<s:property?value="#url1"/>??
???? ??
????注意： ?????
????????<s:set?name="myurl"?value="'http://www.baidu.com'"></s:set>?????
????????value以字符处理：???<s:url?value="#myurl"></s:url> ?????
????????value明确指定以ognl表达式处理:????<s:url?value="%{#myurl}"></s:url>?????
??????
?????? -------------------------- ??
??????
???????三、UI标签 ??
????<hr?size="3"?color="red">??
????<s:form>??
????#、checkboxlist?@复选框列表 ??
?????????1>?.list?生成；~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ?????
????????name:checkboxlist的名字 ?????
????????list:checkboxlist要显示的列表 ?????
????????value:checkboxlist默认被选中的选项,checked=checked ?????
????????<s:checkboxlist?theme="simple"?name="checkbox1"?list="{'上网','看书','爬山','游泳','唱歌'}"?value="{'上网','看书'}"?></s:checkboxlist>?????
???????? ?????
?????????
????????2>?.Map?生成；~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ?????
????????name:checkboxlist的名字 ?????
????????list:checkboxlist要显示的列表 ?????
????????listKey:checkbox?的value的值 ?????
????????listValue:checkbox?的lablel(显示的值) ?????
????????value:checkboxlist默认被选中的选项,checked=checked ?????
????????<s:checkboxlist?theme="simple"?name="checkbox2"?list="#{1:'上网',2:'看书',3:'爬山',4:'游泳',5:'唱歌'}"?listKey="key"?listValue="value"?value="{1,2,5}"?></s:checkboxlist>?????
????
????????? -------------------------- ??
?????#、combobox? ??
????<s:combobox?theme="simple"?label="选择你喜欢的颜色"?name="colorNames"??headerValue="------请选择------"?headerKey="1"??list="{'红','橙','黄','绿','青','蓝','紫'}"?/>???
???? -------------------------- ??
?????#、radio?@单选框 ???
?????????<%?????
????????????Sex?sex1?=?new?Sex(1,"男");??????
????????????Sex?sex2?=?new?Sex(2,"女");?????
????????????List<Sex>?list?=?new?ArrayList<Sex>();??????
????????????list.add(sex1);?????
????????????list.add(sex2);?????
????????????request.setAttribute("sexs",list);??????
????????%>?????
??????????????????????这个与checkboxlist差不多； ?????
????????1>.如果集合为javabean：<s:radio?theme="simple"?name="sex"?list="#request.sexs"?listKey="id"?listValue="name"></s:radio> ?????
????????2>.如果集合为list：<s:radio?theme="simple"?name="sexList"?list="{'男','女'}"></s:radio> ?????
????????3>.如果集合为map：<s:radio?theme="simple"?name="sexMap"?list="#{1:'男',2:'女'}"?listKey="key"?listValue="value"></s:radio> ?????
????????<hr>?????
????? -------------------------- ??
?????#、select?@下拉列表框 ????
????????这个与s:checkboxlist差不多； ?????
????????1>.如果集合为javabean：<s:select?theme="simple"?name="sex"?list="#request.sexs"?listKey="id"?listValue="name"></s:select> ?????
????????2>.如果集合为list：<s:select?theme="simple"?name="sexList"?list="{'男','女'}"></s:select> ?????
????????3>.如果集合为map：<s:select?theme="simple"?name="sexMap"?list="#{1:'男',2:'女'}"?listKey="key"?listValue="value"></s:select> ?????
???????
????? -------------------------- ??
?????#、doubleselect?@级联菜单? ??
??????
?????<s:set?name="proviList"?value="{'江西省','湖北省'}"></s:set>??
?????<s:set?name="jxList"?value="{'南昌市','赣州市','九江市','上饶市','鹰潭市'}"></s:set>??
?????<s:set?name="hbList"?value="{'武汉市','恩施市','十堰市','荆州市','襄樊市'}"></s:set>??
?????<s:doubleselect?theme="simple"??name="provi"?doubleList="top=='江西省'???#jxList?:?#hbList"?list="#proviList"?doubleName="city"></s:doubleselect>??
????? -------------------------- ??
?????#、optiontransferselect? ??
?????<s:optiontransferselect?theme="simple"?label="change"?name="abc"?doubleList="{'111','222','333','444'}"?list="{'aaa','bbb','ccc','ddd'}"?doubleName="number"></s:optiontransferselect>??
????? -------------------------- ??
?????#、updownselect?@可上下选择的select? ??
?????<s:updownselect?label="selectCity"?emptyOption="true"?name="selectCity"?list="#jxList"?headerValue="-Please?Select?The?City-"?headerKey="-1"></s:updownselect>??
?????? -------------------------- ??
?????#、sx:datetimepicker?@日期选择控件? ??
?????使用步骤：声明：我这里用的是strut?2.1.8.1,在struts2.0的版本中可能有所不同； ??
??????????????1.导入struts2-dojo-plugin-2.1.8.1.jar?DoJo?插件包； ??
??????????????2.?导入标签：<%--@?taglib?prefix="sx"?uri="/struts-dojo-tags"--%>； ??
??????????????3.在需要使用的页面中的head标签之间加上<%--?<sx:head?parseContent="true"/>?--%>; ??
?????<sx:datetimepicker?label="birthday"?name="bir"?value="#dt"></sx:datetimepicker>??
?????? -------------------------- ??
?????#、sx:tabbedpanel?@选项卡控件? ??
??????声明：这个标签代码转至：http://blog.sina.com.cn/s/blog_6145ed810100ecud.html，版权归作者所有；写的挺好拿来大家共同学习。??
???????
????????
??????????
??????????<hr?color="blue">??
??????????最简单的选项卡：??
?????????? ??
????????????????<sx:tabbedpanel?id="tab1"?beforeSelectTabNotifyTopics="/beforeSelect">??
?????????????<sx:div?label="Tab?1"?>??
?????????????????Local?Tab?1??
?????????????</sx:div>????
?????????????<sx:div?label="Tab?2"?>??
?????????????????Local?Tab?2??
?????????????</sx:div>????
????????????????</sx:tabbedpanel>??
??????????
??????????
??????????
??????????<hr?color="blue">??
??????????加载其他页面的选项卡：??
?????????? ??
??????????<sx:tabbedpanel?id="tab2">??
??????????<sx:div?label="Remote?Tab?1"?href="upload.jsp">??
?????????????????????Remote?Tab?1??
????????????????</sx:div>??
?????????????<sx:div?label="Remote?Tab?2"?href="multipleUpload.jsp"?>??
?????????????????????Remote?Tab?1??
????????????????</sx:div>??
??????????</sx:tabbedpanel>??
??????????
??????????
??????????
??????????<hr?color="blue">??
??????????设置选项卡底下的内容懒加载，即等需要的时候再加载，使用属性preload="false"：??
?????????? ??
????????????????<sx:tabbedpanel?id="tab3">??
?????????????<sx:div?label="Remote?Tab?1"?href="upload.jsp">??
?????????????????Remote?Tab?1??
?????????????</sx:div>???
?????????????<sx:div?label="Remote?Tab?2"?href="multipleUpload.jsp"?preload="false">??
?????????????????Remote?Tab?1??
?????????????</sx:div>???????
????????????????</sx:tabbedpanel>??
??????????
??????????
??????????
??????????<hr?color="blue">??
??????????固定大小的选项卡,使用属性cssStyle和doLayout：??
?????????? ??
????????????????<sx:tabbedpanel?cssStyle="width:?200px;?height:?100px;"?doLayout="true"?id="tab4">??
?????????????<sx:div?label="Tab?1"?>??
?????????????????Local?Tab?1??
?????????????</sx:div>????
?????????????<sx:div?label="Tab?2"?>??
?????????????????Local?Tab?2??
?????????????</sx:div>????
????????????????</sx:tabbedpanel>??
??????????
??????????
??????????
??????????<hr?color="blue">??
??????????每次点击选项卡时都重新刷新内容，使用属性refreshOnShow：??
?????????? ??
??????????<sx:tabbedpanel?id="tab5">??
?????????????<sx:div?label="Remote?Tab?1"?href="upload.jsp"?refreshOnShow="true">??
?????????????????Remote?Tab?1??
?????????????</sx:div>???
?????????????<sx:div?label="Remote?Tab?2"?href="multipleUpload.jsp"?refreshOnShow="true">??
?????????????????Remote?Tab?2??
?????????????</sx:div>???????
??????????</sx:tabbedpanel>??
??????????
???????????
??????????
??????????
??????????<hr?color="blue">??
??????????使得其中一个选项卡失效：??
?????????? ??
?????????????????<sx:tabbedpanel?id="tab6">??
????????????<sx:div?label="Tab?1"?>??
????????????????Local?Tab?1??
????????????</sx:div>????
????????????<sx:div?label="Tab?2"?disabled="true">??
????????????????Local?Tab?2??
????????????</sx:div>????
????????????????</sx:tabbedpanel>??
??????????
??????????
??????????
??????????<hr?color="blue">??
??????????设置选项卡在底部显示?(可以是:?top,?right,?bottom,?left)：??
?????????? ??
??????????<sx:tabbedpanel?id="tab7"?labelposition="bottom"?cssStyle="width:200px;height:100px;"?doLayout="true">??
?????????????<sx:div?label="Tab?1"?>??
?????????????????Local?Tab?1??
?????????????</sx:div>????
?????????????<sx:div?label="Tab?2"?>??
?????????????????Local?Tab?2??
?????????????</sx:div>????
??????????</sx:tabbedpanel>??
??????????
??????????
??????????<hr?color="blue">??
??????????设置选项卡允许关闭，使用属性closeable：??
?????????? ?????????
??????????<sx:tabbedpanel?id="tab8">??
?????????????<sx:div?label="Tab?1"?>??
?????????????????Local?Tab?1??
?????????????</sx:div>????
?????????????<sx:div?label="Tab?2"??closable="true">??
?????????????????Local?Tab?2??
?????????????</sx:div>????
??????????</sx:tabbedpanel>??
??
????? -------------------------- ??
?????#、sx:textarea?@textarea控件? ??
?????<sx:textarea?label="简介"?value="sx:textareasx:textareasx: textareasx:textareasx:textareasx: textareasx:textareasx: textareasx:textarea"></sx:textarea>??
???????
????? -------------------------- ??
?????#、sx:tree?@树控件? ??
?????<sx:tree?id="tree1"?label="根节点">??
???????<sx:treenode?id="tn1"?label="财务部"?/>??
???????<sx:treenode?id="tn2"?label="开发部">??
???????????<sx:treenode?id="tn3"?label="JAVA"?/>??
???????????<sx:treenode?id="tn4"?label=".NET"?/>??
???????</sx:treenode>??
???????<sx:treenode?id="tn5"?label="人事部"?/>??
????</sx:tree>??
???????
?</s:form>?????
???????
??</body>??
</html>??

struts.xml 代码：

Xml代码 ?

<?xml?version="1.0"?encoding="UTF-8"?>??
<!DOCTYPE?struts?PUBLIC?"-//Apache?Software?Foundation//DTD?Struts?Configuration?2.1.7//EN"?"struts-2.1.7.dtd"?>??
<struts>??
????<constant?name="struts.custom.i18n.resources"?value="struts2"></constant>??
????<constant?name="struts.configuration.xml.reload"?value="true"></constant>??
??????
????<package?name="package1"?namespace="/com/rao"?extends="struts-default">??
????????<action?name="tagsAction1"?class="com.rao.action.TagsAction1">??
????????????<result>/success.jsp</result>??
??????????????
????????</action>??
????</package>??
</struts>??

?TagsAction1.java 代码：

Java代码 ?

package?com.rao.action;??
??
import?com.opensymphony.xwork2.ActionSupport;??
??
public?class?TagsAction1?extends?ActionSupport?{??
????private?String?userName;??
????public?String?getUserName()?{??
????????return?userName;??
????}??
????public?void?setUserName(String?userName)?{??
????????this.userName?=?userName;??
????}??
??
????@Override??
????public?String?execute()?throws?Exception?{??
??????????
????????return?SUCCESS;??
????}??
??
}??

GlobalNativeAction.java

Java代码 ?

package?com.rao.action;??
??
import?com.opensymphony.xwork2.ActionContext;??
import?com.opensymphony.xwork2.ActionSupport;??
/**?
?*?演示的是在Action?中获取国际化资源文件中的内容?
?*?@author?Administrator?
?*?
?*/??
public?class?GlobalNativeAction?extends?ActionSupport?{??
??
????@Override??
????public?String?execute()?throws?Exception?{??
????????//不带有占位符的获取方法??
????????//ActionContext.getContext().put("message",?this.getText("welcome"));??
????????//带有占位符的获取方法??
????????ActionContext.getContext().put("message",?this.getText("welcome",new?String[]{"raozhiyong","study"}));??
????????return?"message";??
????}??
??
}??