📄 strus 2的新表单标志的使用 - max on java - blogjava.htm
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style="COLOR: #ff0000">&gt;</SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN style="COLOR: #800000">h2</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">s:form </SPAN><SPAN
style="COLOR: #ff0000">action</SPAN><SPAN
style="COLOR: #0000ff">="Store"</SPAN><SPAN style="COLOR: #ff0000"> </SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">s:checkboxlist </SPAN><SPAN
style="COLOR: #ff0000">name</SPAN><SPAN
style="COLOR: #0000ff">="skills1"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
label</SPAN><SPAN
style="COLOR: #0000ff">="Skills 1"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
list</SPAN><SPAN
style="COLOR: #0000ff">="{ 'Java', '.Net', 'RoR', 'PHP' }"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
value</SPAN><SPAN
style="COLOR: #0000ff">="{ 'Java', '.Net' }"</SPAN><SPAN style="COLOR: #ff0000">
</SPAN><SPAN style="COLOR: #0000ff">/></SPAN><SPAN
style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">s:checkboxlist
</SPAN><SPAN style="COLOR: #ff0000">name</SPAN><SPAN
style="COLOR: #0000ff">="skills2"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
label</SPAN><SPAN
style="COLOR: #0000ff">="Skills 2"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
list</SPAN><SPAN
style="COLOR: #0000ff">="#{ 1:'Java', 2: '.Net', 3: 'RoR', 4: 'PHP'
}"</SPAN><SPAN style="COLOR: #ff0000"> <BR>
listKey</SPAN><SPAN
style="COLOR: #0000ff">="key"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
listValue</SPAN><SPAN
style="COLOR: #0000ff">="value"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
value</SPAN><SPAN
style="COLOR: #0000ff">="{ 1, 2, 3 }"</SPAN><SPAN
style="COLOR: #0000ff">/></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"></</SPAN><SPAN
style="COLOR: #800000">s:form</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN style="COLOR: #800000">body</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN style="COLOR: #800000">html</SPAN><SPAN
style="COLOR: #0000ff">></SPAN></DIV><SPAN
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单1
WebContent/checkboxlist.jsp</SPAN>
<P>分布运行应用程序，在浏览器中键入：<A
href="http://localhost:8080/Struts2_CoolTags/checkboxlist.jsp">http://localhost:8080/Struts2_CoolTags/checkboxlist.jsp</A>，出现如下图所示页面：</P>
<P><IMG alt=checkboxlist.jsp页面
src="Strus 2的新表单标志的使用 - Max On Java - BlogJava.files/r_checkboxlist.gif"><BR><SPAN
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单2 checkboxlist.jsp页面</SPAN></P>
<H2>2、<s:doubleselect /></H2>
<P>大家看Struts 2的showcase的例子，<s:doubleselect />的用法如下所示：</P>
<DIV
style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">s:doubleselect<BR>
</SPAN><SPAN style="COLOR: #ff0000">tooltip</SPAN><SPAN
style="COLOR: #0000ff">="Choose Your State"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
label</SPAN><SPAN style="COLOR: #0000ff">="State"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
name</SPAN><SPAN style="COLOR: #0000ff">="region"</SPAN><SPAN
style="COLOR: #ff0000"> list</SPAN><SPAN style="COLOR: #0000ff">="{'North',
'South'}"</SPAN><SPAN style="COLOR: #ff0000"><BR>
value</SPAN><SPAN style="COLOR: #0000ff">="'South'"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
doubleValue</SPAN><SPAN style="COLOR: #0000ff">="'Florida'"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
doubleList</SPAN><SPAN style="COLOR: #0000ff">="top == 'North' ? {'Oregon',
'Washington'} : {'Texas', 'Florida'}"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
doubleName</SPAN><SPAN style="COLOR: #0000ff">="state"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
headerKey</SPAN><SPAN style="COLOR: #0000ff">="-1"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
headerValue</SPAN><SPAN style="COLOR: #0000ff">="---------- Please Select
----------"</SPAN><SPAN style="COLOR: #ff0000"><BR>
emptyOption</SPAN><SPAN style="COLOR: #0000ff">="true"</SPAN><SPAN
style="COLOR: #ff0000"> </SPAN><SPAN
style="COLOR: #0000ff">/></SPAN></DIV><SPAN
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单3 Showcase中<s:doubleselect
/></SPAN>
<P>很多朋友问：“上面的‘list’属性只有两个值，如果我有三个或更多的值，‘doublelist’属性应该如何设定呢？”</P>
<P>我建议的做法是先定义一个Map类型的对象，键为“list”的集合，值则为“doubleList”的集合，然后“doubleList”的OGNL写成“#myMap[top]”，如以下代码所示：</P>
<DIV
style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #ffff00"><%</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">@ page language</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">java</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> contentType</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">text/html;
charset=utf-8</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> pageEncoding</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">utf-8</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> </SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #ffff00">%></SPAN><SPAN
style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #ffff00"><%</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">@ taglib prefix</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">s</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> uri</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">/struts-tags</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> </SPAN><SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #ffff00">%></SPAN><SPAN
style="COLOR: #000000"><BR><BR></SPAN><SPAN
style="COLOR: #0000ff"><!</SPAN><SPAN style="COLOR: #ff00ff">DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">html </SPAN><SPAN
style="COLOR: #ff0000">xmlns</SPAN><SPAN
style="COLOR: #0000ff">="http://www.w3.org/1999/xhtml"</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">head</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">title</SPAN><SPAN style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000">Struts 2 Cool Tags - </SPAN><SPAN
style="COLOR: #ff0000">&lt;</SPAN><SPAN
style="COLOR: #000000">s:doubeselect/ </SPAN><SPAN
style="COLOR: #ff0000">&gt;</SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN
style="COLOR: #800000">title</SPAN><SPAN style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">s:head
</SPAN><SPAN style="COLOR: #0000ff">/></SPAN><SPAN
style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff"></</SPAN><SPAN
style="COLOR: #800000">head</SPAN><SPAN style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">body</SPAN><SPAN style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000"> <BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">h2</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #ff0000">&lt;</SPAN><SPAN
style="COLOR: #000000">s:doubleselect/</SPAN><SPAN
style="COLOR: #ff0000">&gt;</SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN style="COLOR: #800000">h2</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">s:form </SPAN><SPAN
style="COLOR: #ff0000">action</SPAN><SPAN
style="COLOR: #0000ff">="Store"</SPAN><SPAN style="COLOR: #ff0000"> </SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">s:set </SPAN><SPAN
style="COLOR: #ff0000">name</SPAN><SPAN
style="COLOR: #0000ff">="foobar"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
value</SPAN><SPAN style="COLOR: #0000ff">="#{'Java': {'Spring',
'Hibernate', 'Struts 2'}, '.Net': {'Linq', ' ASP.NET 2.0'}, 'Database':
{'Oracle', 'SQL Server', 'DB2', 'MySQL'}}"</SPAN><SPAN style="COLOR: #ff0000">
</SPAN><SPAN style="COLOR: #0000ff">/></SPAN><SPAN
style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN style="COLOR: #800000">s:doubleselect
</SPAN><SPAN style="COLOR: #ff0000">list</SPAN><SPAN
style="COLOR: #0000ff">="#foobar.keySet()"</SPAN><SPAN
style="COLOR: #ff0000"><BR>
doubleName</SPAN><SPAN
style="COLOR: #0000ff">="technology"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
doubleList</SPAN><SPAN
style="COLOR: #0000ff">="#foobar[top]"</SPAN><SPAN
style="COLOR: #ff0000"> <BR>
label</SPAN><SPAN
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