📄 为struts 2_0做好准备 - max on java - blogjava.htm
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<DIV class=postTitle><A class=postTitle2 id=viewpost1_TitleUrl
href="http://www.blogjava.net/max/archive/2006/10/10/74353.html">为Struts
2.0做好准备</A> </DIV>
<P>Struts作为MVC 2的Web框架，自推出以来不断受到开发者的追捧，得到用广泛的应用。作为最成功的Web框架，Struts自然拥有众多的优点：</P>
<UL>
<LI>MVC 2模型的使用
<LI>功能齐全的标志库（Tag Library）
<LI>开放源代码 </LI></UL>
<P>但是，所谓“金无赤金，人无完人”，Struts自身也有不少的缺点：</P>
<UL>
<LI>需要编写的代码过多，容易引起“类爆炸”
<LI>单元测试困难 </LI></UL>
<P>这些缺点随着Web的发展越来越明显。这就促生了Struts 2.0，它的诞生能很好的解决上述问题。
好啦，废话就不多说了，现在就让我们感受一下的Struts 2.0的魅力吧。</P>
<OL>
<LI>搭建开发和运行环境
<OL>
<LI>到Apache下载Struts 2.0包
<P><IMG id=IMG1
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image001.png"></P>
<LI>打开Eclipse 3.2新建Web工程
<P>点击菜单File\New\Project，出现如图1所示对话框<BR><IMG id=IMG2 alt="图1 新建工程对话框"
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image003.png"><BR>图1
新建工程对话框<BR>选择Web\Dynamic Web Project，点击“Next”，出现图2对话框 </P>
<P><IMG id=IMG3 alt="图2 新建动态Web工程对话框"
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image005.png"><BR>图2
新建动态Web工程对话框<BR>在“Project Name”中键入Struts2_HelloWorld，点击“New”，出现以下对话框 </P>
<P><IMG id=IMG4 alt="图3 新建服务器运行时对话框"
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image007.png"><BR>图3
新建服务器运行时对话框<BR>选择“Apache\Apache Tomat v5.5”，点击“Next”，出现以下对话框 </P>
<P><IMG id=IMG5 alt=图4新建服务器运行时对话框
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image009.png"><BR>图4新建服务器运行时对话框<BR>点击“Finish”，关闭对话框。
</P>
<LI>将Struts 2.0 lib下的jar文件加到工程的构建路径（build path）
<P><IMG id=IMG6 alt="图5 Struts 2.0的lib目录"
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image011.png"><BR>图5
Struts 2.0的lib目录<BR>按ctr+a全选，复制，再转到Eclipse窗口，在“Project
Explorer”子窗口中选中Struts2_HelloWorld\WebContent\WEB-INF\lib，然后粘贴。经过Eclipse自动刷新“Project
Explorer”子窗口，刚才所粘贴的jar文件应该会出现在Struts2_HelloWorld\Java Resources:
src\Libraries\Web App Libraries下，如图6所示： </P>
<P><IMG id=IMG7 alt="图6 Project Explorer子窗口"
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/o_image013.png"><BR>图6
Project Explorer子窗口<BR></P>
<LI>打开web.xml文件，将其修改为以下代码：
<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"><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top><SPAN style="COLOR: #0000ff"><?</SPAN><SPAN
style="COLOR: #ff00ff">xml version="1.0" encoding="ISO-8859-1"</SPAN><SPAN
style="COLOR: #0000ff">?></SPAN><SPAN style="COLOR: #000000"><BR><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top></SPAN><SPAN style="COLOR: #0000ff"><!</SPAN><SPAN
style="COLOR: #ff00ff">DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top></SPAN><SPAN style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">web-app</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">display-name</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000">Struts 2.0 Hello World</SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN
style="COLOR: #800000">display-name</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">filter</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN style="COLOR: #000000"><BR><IMG
src="为Struts 2_0做好准备 - Max On Java - BlogJava.files/None.gif"
align=top> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">filter-name</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000">struts2</SPAN><SPAN
style="COLOR: #0000ff"></</SPAN><SPAN
style="COLOR: #800000">filter-name</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN
style="COLOR: #000000"> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN><SPAN
style="COLOR: #800000">filter-class</SPAN><SPAN
style="COLOR: #0000ff">></SPAN><SPAN
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