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<DIV class=postTitle><A class=postTitle2 id=viewpost1_TitleUrl
href="http://www.blogjava.net/max/archive/2006/10/25/77157.html">Struts
2.0的Action講解</A> </DIV>
<P>有Struts 1.x經(jīng)驗(yàn)的朋友都知道Action是Struts的核心內(nèi)容，當(dāng)然Struts 2.0也不例外。不過(guò)，Struts 1.x與Struts
2.0的Action模型很大的區(qū)別。</P>
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<TR>
<TD
style="FONT-WEIGHT: bold; BORDER-BOTTOM: #008000 1px solid; HEIGHT: 21px; BACKGROUND-COLOR: #ccffcc"> </TD>
<TD
style="FONT-WEIGHT: bold; BORDER-BOTTOM: #008000 1px solid; HEIGHT: 21px; BACKGROUND-COLOR: #ccffcc">Struts
1.x</TD>
<TD
style="FONT-WEIGHT: bold; BORDER-BOTTOM: #008000 1px solid; HEIGHT: 21px; BACKGROUND-COLOR: #ccffcc">Stuts
2.0</TD></TR>
<TR>
<TD>接口</TD>
<TD>必須繼承org.apache.struts.action.Action或者其子類</TD>
<TD>無(wú)須繼承任何類型或?qū)崿F(xiàn)任何接口</TD></TR>
<TR>
<TD>表單數(shù)據(jù)</TD>
<TD>表單數(shù)據(jù)封裝在FormBean中</TD>
<TD>表單數(shù)據(jù)包含在Action中，通過(guò)Getter和Setter獲取</TD></TR></TBODY></TABLE></CENTER>
<P>雖然，理論上Struts
2.0的Action無(wú)須實(shí)現(xiàn)任何接口或繼承任何類型，但是，我們?yōu)榱朔奖銓?shí)現(xiàn)Action，大多數(shù)情況下都會(huì)繼承com.opensymphony.xwork2.ActionSupport類，并重載（Override）此類里的String
execute()方法。具體的實(shí)現(xiàn)，如例1所示：</P>
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style="COLOR: #000000; BACKGROUND-COLOR: #ffff00"><%</SPAN> <SPAN
style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">@ page 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"></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></SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">html</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">Hello World!</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">head</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR></SPAN><SPAN
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