📄 csdn_文档中心_struts快速学习指南7(内部培训教材)-大部分素材来自于《programming jakarta struts》一书.htm
字号:
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN lang=EN-US><FONT face=宋体
size=2>HTML</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -21pt; mso-list: l4 level1 lfo3; tab-stops: list 57.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=2>l</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN lang=EN-US><FONT face=宋体
size=2>JSP</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><FONT
face=宋体><FONT size=2>而<SPAN
lang=EN-US>JSP中通常包含以下组件：</SPAN></FONT></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -21pt; mso-list: l1 level1 lfo4; tab-stops: list 57.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=2>l</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT face=宋体 size=2>自定义标签</FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -21pt; mso-list: l1 level1 lfo4; tab-stops: list 57.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=2>l</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN lang=EN-US><FONT face=宋体 size=2>DTO(Data
Transfer Object数据传输对象)</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><FONT
face=宋体><FONT size=2>在<SPAN
lang=EN-US>Struts中，还包含了以下两种常用的组件：</SPAN></FONT></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -21pt; mso-list: l3 level1 lfo5; tab-stops: list 57.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=2>l</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN lang=EN-US><FONT face=宋体 size=2>Struts
ActionForms</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -21pt; mso-list: l3 level1 lfo5; tab-stops: list 57.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=2>l</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=2><FONT face=宋体>资源绑定<SPAN
lang=EN-US>(java resource
bundles)，例如将标签的显示内容，错误提示的内容通过配置文件来配置，这样可以为实现国际化提供基础。</SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><FONT
size=2><FONT face=宋体>由此可见，<SPAN lang=EN-US>Struts对于传统的Web
UI所作的扩充就是Struts
ActionForms和资源绑定，接下来对其进行进一步描述。</SPAN></FONT></FONT></P>
<H4 style="MARGIN: 6pt 0cm 3pt; TEXT-INDENT: 0cm"><A
name=_Toc70351649></A><A name=_Toc69320868><SPAN
style="mso-bookmark: _Toc70351649"><SPAN lang=EN-US
style="mso-bidi-font-family: 宋体"><SPAN
style="mso-list: Ignore"><FONT face=宋体 size=2>1.1.3.1</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=2><FONT face=宋体>使用<SPAN lang=EN-US>
Struts ActionForm</SPAN></FONT></FONT></SPAN></A></H4>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: 18pt; mso-char-indent-count: 1.8"><FONT
size=2><FONT face=宋体>在<SPAN
lang=EN-US>Struts框架中,</SPAN></FONT></FONT><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>ActionForm</FONT></SPAN></TT><FONT face=宋体
size=2>负责在用户和业务逻辑层之间来回地传递用户输入的数据。框架会自动收集用户输入并以</FONT><TT><SPAN
lang=DA style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>form bean</FONT></SPAN></TT><FONT face=宋体
size=2>的方式将这些数据传递给</FONT><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>Action</FONT></SPAN></TT><FONT face=宋体
size=2>，然后，</FONT><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>form bean</FONT></SPAN></TT><FONT face=宋体
size=2>可以被传递到业务层。不过，为了减少表示层和业务层的耦合，不建议将</FONT><FONT
color=#354278><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">ActionForm
</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">直接传递给业务层，而建议代之为</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">DTO</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">。即在</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">Action</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">中利用</SPAN></TT><TT><SPAN
lang=DA style="FONT-SIZE: 12pt; mso-ansi-language: DA">form
bean</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">的数据创建合适的</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">DTO</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">，然后传递给业务层。下面的步骤描述了</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">Struts</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">框架在每一次请求中，是如何处理</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">ActionForm</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">的：</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><o:p></o:p></SPAN></TT></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 75pt; TEXT-INDENT: -18pt; mso-list: l2 level2 lfo2; tab-stops: list 75.0pt"><FONT
color=#354278><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA; mso-fareast-font-family: 'Courier New'"><SPAN
style="mso-list: Ignore">1、<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">检查是否已经配置</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">ActionForm</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">映射到</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">Action</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">；</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><o:p></o:p></SPAN></TT></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 75pt; TEXT-INDENT: -18pt; mso-list: l2 level2 lfo2; tab-stops: list 75.0pt"><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA; mso-fareast-font-family: 'Courier New'"><SPAN
style="mso-list: Ignore"><FONT color=#354278>2、<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT></SPAN></SPAN></TT><FONT face=宋体
size=2>如果某一个</FONT><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>ActionForm</FONT></SPAN></TT><FONT face=宋体
size=2>被映射到</FONT><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><FONT
color=#354278>Action</FONT></SPAN></TT><FONT size=2><FONT
face=宋体><SPAN
style="mso-ansi-language: DA">，</SPAN>利用配置文件中</FONT></FONT><FONT
color=#354278><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">action</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">元素的</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">name</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">属性查找相匹配的</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA">ActionForm</SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">配置信息；</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA"><o:p></o:p></SPAN></TT></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 75pt; TEXT-INDENT: -18pt; mso-list: l2 level2 lfo2; tab-stops: list 75.0pt"><FONT
color=#354278><TT><SPAN lang=DA
style="FONT-SIZE: 12pt; mso-ansi-language: DA; mso-fareast-font-family: 'Courier New'"><SPAN
style="mso-list: Ignore">3、<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN></TT><TT><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ansi-language: DA; mso-hansi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'">检查是否已经存在该</SPAN></TT><TT><SPAN
lang=DA
style="FONT-SIZE: 11.5pt; mso-ansi-language: DA">ActionForm</SPAN></TT><TT><SPAN
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -