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📁 Struts 开发实例,Struts 开发实例
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<p class="MsoNormal"><span lang="EN-US">2</span><span style="font-family: 宋体">、建立一个“空的</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用模板”应用程序:</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;&nbsp;&nbsp; </span>
<span style="font-family: 宋体">选择菜单“文件”</span><span lang="EN-US">—</span><span style="font-family: 宋体">“新建”</span><span lang="EN-US">—</span><span style="font-family: 宋体">“新建项目”,弹出新建项目对话框,如图</span><span lang="EN-US">3-1</span><span style="font-family: 宋体">所示:</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">
在对话框中选择“空的</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用模板”,在项目名称中输入“</span><span lang="EN-US">DBApp</span><span style="font-family: 宋体">”,</span><span lang="EN-US">package 
(</span><span style="font-family: 宋体">包名</span><span lang="EN-US">)</span><span style="font-family: 宋体">和位置(项目的路径)采用默认的值就行,当然也可以根据需要改变。最后点击“确定”按钮完成新项目的建立。</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">在</span><span lang="EN-US">DBApp</span><span style="font-family: 宋体">项目根目录下包含四个子目录和两个文件,这是</span><span lang="EN-US">JSPStudio</span><span style="font-family: 宋体">项目的标准结构,最好不要改变它们默认的名称,否则会出现问题。</span></p>
<p class="MsoNormal"><span lang="EN-US">3</span><span style="font-family: 宋体">、利用</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用文件向导建立新的应用:</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">在</span><span lang="EN-US">JSPStudio</span><span style="font-family: 宋体">文件管理器内点击鼠标右键,在弹出的菜单中选择“</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用文件向导”进入</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">文件向导对话框,也可以选择菜单“文件”</span><span lang="EN-US">—</span><span style="font-family: 宋体">“新建”</span><span lang="EN-US">—</span><span style="font-family: 宋体">“</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用文件向导”进入</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">文件向导对话框。</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">在</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">文件向导对话框</span><span lang="EN-US">JSP</span><span style="font-family: 宋体">文件标签下的文件名输入栏中输入“</span><span lang="EN-US">HellWord</span><span style="font-family: 宋体">”文件名,其它文件采用默认的设置。</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">(</span><span lang="EN-US">1</span><span style="font-family: 宋体">)输入文件名:</span></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1030" type="#_x0000_t75" style='width:468pt;height:314.25pt'>
 <v:imagedata src="in10_db_page_files/image011.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=419
src="in10_db_page_files/image012.jpg" v:shapes="_x0000_s1030"><![endif]></span></p>
<p class="MsoNormal"><span style="font-family: 宋体">(</span><span lang="EN-US">2</span><span style="font-family: 宋体">)从数据源中导入</span><span lang="EN-US">SQL</span><span style="font-family: 宋体">语句及数据表的字段信息(字段名和字段类型):</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">(</span><span lang="EN-US">3</span><span style="font-family: 宋体">)从数据据表中选择所需的表“</span><span lang="EN-US">Test</span><span style="font-family: 宋体">”。</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">需要特别注意的是,这里的“从数据源中导入</span><span lang="EN-US">SQL</span><span style="font-family: 宋体">语句及数据表的字段信息”及“从数据据表中选择所需的表”仅仅是为了自动生成</span><span lang="EN-US">SQL</span><span style="font-family: 宋体">语句及读取字段信息,这里完成可以直接手工输入,与该项目的数据库连接池的配置无关,下面第(</span><span lang="EN-US">4</span><span style="font-family: 宋体">)点将另行配置数据库连接池。</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1031" type="#_x0000_t75" style='width:468pt;height:314.25pt'>
 <v:imagedata src="in10_db_page_files/image013.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=419
src="in10_db_page_files/image014.jpg" v:shapes="_x0000_s1031"><![endif]></span></p>
<p class="MsoNormal"><span style="font-family: 宋体">
接下来配置数据库连接池,其它属性页可采用默认的就行了,下面直接转去数据连接配置属性页即可。</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">(</span><span lang="EN-US">4</span><span style="font-family: 宋体">)</span><b><span style="font-size: 9.0pt; font-family: 宋体">JSPOUT属性页设置:</span></b></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1032" type="#_x0000_t75" style='width:468pt;height:312.75pt'>
 <v:imagedata src="in10_db_page_files/image015.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=417
src="in10_db_page_files/image016.jpg" v:shapes="_x0000_s1032"><![endif]></span></p>
<p class="MsoNormal" style="text-indent: 17.7pt"><b>
<span style="font-size: 9.0pt; font-family: 宋体">JSPOUT属性页的设置是唯一与《如何实现Struts 
数据库应用程序》中的步骤不同之处,这是本例的核心内容。从上图可看出,我们要做的仅仅是把“自动分页”选择项选定并输入每页记录数即可,由于本例测试数据记录少,所以这里每页只显示3条记录。</span></b></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US">(5)</span><span style="font-family: 宋体">配置数据库连接池:</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span lang="EN-US">(</span><span style="font-family: 宋体">省略</span><span lang="EN-US">)</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US">4</span><span style="font-family: 宋体">、项目文件结构</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">
项目目录结构分析见</span><b><span style="font-size:9.0pt;font-family:宋体">《</span><span style="font-size: 9.0pt; font-family: 宋体; color: #333333">如何实现最简单的<span lang="EN-US">Struts程序</span></span><span style="font-size:9.0pt;font-family:宋体">》</span></b><span lang="EN-US" style="font-size:9.0pt;font-family:宋体">,这次</span><span lang="EN-US">Struts</span><span style="font-family: 宋体">数据库应用文件向导自动生成了六个文件,其中</span><span lang="EN-US">web</span><span style="font-family: 宋体">目录下是输入、输出两个</span><span lang="EN-US">JSP</span><span style="font-family: 宋体">文件,</span><span lang="EN-US">src</span><span style="font-family: 宋体">目录下是</span><span lang="EN-US">Java</span><span style="font-family: 宋体">文件。除了文件名是我们输入之外,所有程序源代码都是文件向导自动生成的,所有的配置也是自动完成的。</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">
刷新</span><span lang="EN-US">JSPStudio</span><span style="font-family: 宋体">文件管理器,这时发现</span><span lang="EN-US">web</span><span style="font-family: 宋体">目录下自动生成了两个文件,分别是</span><span lang="EN-US">DbList.jsp</span><span style="font-family: 宋体">和</span><span lang="EN-US">DbList.jsp</span><span style="font-family: 宋体">,前者是输入</span><span lang="EN-US">JSP</span><span style="font-family: 宋体">文件,后者是输出</span><span lang="EN-US">JSP</span><span style="font-family: 宋体">文件;</span><span lang="EN-US">src\emptyprj</span><span style="font-family: 宋体">目录下自动生成了四个文件,分别是</span><span lang="EN-US">DbList 
Action.java</span><span style="font-family: 宋体">和</span><span lang="EN-US">DbList 
Form.java</span><span style="font-family: 宋体">,前者是</span><span lang="EN-US">Action</span><span style="font-family: 宋体">文件,后者是</span><span lang="EN-US">FormAction</span><span style="font-family: 宋体">文件;还有是数据库操作文件</span><span lang="EN-US">DbList.java</span><span style="font-family: 宋体">和</span><span lang="EN-US">DbListDAO.java</span><span style="font-family: 宋体">,前者用于保存数据表记录的</span><span lang="EN-US">Bean</span><span style="font-family: 宋体">,后者是数据库操作</span><span lang="EN-US">DAO</span><span style="font-family: 宋体">文件。</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US">5</span><span style="font-family: 宋体">、编译、启动服务器、运行:</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;&nbsp; </span><span style="font-family: 宋体">
通过工具条上的按键分别编译项目及启动服务器,然后把开</span><span lang="EN-US">dbList.jsp</span><span style="font-family: 宋体">并通过工具条上的“运行”按键运行</span><span lang="EN-US">dbList.jsp</span><span style="font-family: 宋体">:</span></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1033" type="#_x0000_t75" style='width:468pt;height:327.75pt'>
 <v:imagedata src="in10_db_page_files/image017.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=437
src="in10_db_page_files/image018.jpg" v:shapes="_x0000_s1033"><![endif]></span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">
  首先试一下全部显示功能,点击“全部显示”接钮,如果如下图所示:</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1034" type="#_x0000_t75" style='width:468pt;height:327.75pt'>
 <v:imagedata src="in10_db_page_files/image019.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=437
src="in10_db_page_files/image020.jpg" v:shapes="_x0000_s1034"><![endif]></span></p>
<p class="MsoNormal"><span style="font-family: 宋体">接下来试一下切换到第</span><span lang="EN-US">5</span><span style="font-family: 宋体">页:</span></p>
<p class="MsoNormal"><span lang="EN-US"><!--[if gte vml 1]><v:shape
 id="_x0000_s1035" type="#_x0000_t75" style='width:468pt;height:327.75pt'>
 <v:imagedata src="in10_db_page_files/image021.png" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=624 height=437
src="in10_db_page_files/image022.jpg" v:shapes="_x0000_s1035"><![endif]></span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span style="font-family: 宋体">通过上述步骤,实现了预计的目标功能。</span></p>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><b>
<span lang="EN-US" style="font-size:14.0pt;font-family:黑体">[程序源代码]</span></b></p>
<p class="MsoNormal" style="text-indent:21.0pt"><b>
<span style="font-family: 黑体">对于程序源代码,本例唯一与《如何实现Struts 数据库应用程序》中的程序源代码不同之处,是</span><span lang="EN-US" style="font-family: 黑体">dbListOut.jsp文件</span><span style="font-family: 黑体">。不同之处在于在表格最后多加了一行,这一行用于显示分页字符串,内容如下:</span></b></p>
<p class="MsoNormal"><span lang="EN-US">&lt;tr&gt;&lt;td&nbsp; align=middle colSpan=4 &gt;</span></p>
<p class="MsoNormal" style="text-indent: 41.3pt"><b>
<span lang="EN-US" style="font-family:黑体">&lt;bean:write property='pagestr' 
name='dbListForm' filter='false' /&gt;</span></b></p>
<p class="MsoNormal"><span lang="EN-US">&lt;/td&gt;&lt;/tr&gt;</span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><b>
<span style="font-family: 黑体">其它文件完全相同,下页是<span lang="EN-US">dbListOut.jsp文件源代码</span>:</span></b></p>
<p class="MsoNormal"><span lang="EN-US">&lt;%@ page 
contentType=&quot;text/html;charset=GB2312&quot; language=&quot;java&quot; %&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;%@ taglib 
uri=&quot;/WEB-INF/struts-bean.tld&quot; prefix=&quot;bean&quot; %&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;%@ taglib 
uri=&quot;/WEB-INF/struts-html.tld&quot; prefix=&quot;html&quot; %&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;%@ taglib 
uri=&quot;/WEB-INF/struts-logic.tld&quot; prefix=&quot;logic&quot; %&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;%@ taglib 
uri=&quot;/WEB-INF/struts-template.tld&quot; prefix=&quot;template&quot; %&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;html:html&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;head&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;title&gt;&lt;/title&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;html:base/&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;/head&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;body bgcolor=&quot;white&quot;&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;table width=&quot;98%&quot; border=&quot;1&quot; 
bgColor=&quot;#E6F2E7&quot; </span></p>
<p class="MsoNormal"><span lang="EN-US">borderColorDark=&quot;#FFFFFF&quot; 
borderColorLight=&quot;#008000&quot; cellPadding=&quot;3&quot; cellSpacing=&quot;0&quot; &gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;tr bgcolor='#90C090'&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;td&gt;&lt;span CONTENTEDITABLE=true&gt;</span><span style="font-family: 宋体">序号</span><span lang="EN-US">&lt;/span&gt;&lt;/td&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;td&gt;&lt;span CONTENTEDITABLE=true&gt;</span><span style="font-family: 宋体">姓名</span><span lang="EN-US">&lt;/span&gt;&lt;/td&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;td&gt;&lt;span CONTENTEDITABLE=true&gt;</span><span style="font-family: 宋体">备注</span><span lang="EN-US">&lt;/span&gt;&lt;/td&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;/tr&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;logic:iterate name='dbList' id='dbList' 
type='emptyprj.dbList' scope='request'&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;logic:notEqual name='dbListForm' 
property='action' value='edit'&gt; </span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;tr&gt;</span></p>

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