在struts 2中实现crud - max on java - blogjava.htm

struts2标签的详细解释说明教程

src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1164_1192_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> 
data.get(isbn);<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;<BR><IMG id=Codehighlighter1_1230_1267_Open_Image 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN 
style="COLOR: #000000"> storeBook(Book book) </SPAN><SPAN 
id=Codehighlighter1_1230_1267_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1230_1267_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;data.put(book.getIsbn(), book);<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;<BR><IMG id=Codehighlighter1_1309_1333_Open_Image 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1309_1333_Closed_Image style="DISPLAY: none" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN 
style="COLOR: #000000"> removeBook(String isbn) </SPAN><SPAN 
id=Codehighlighter1_1309_1333_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1309_1333_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;data.remove(isbn);<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN 
style="COLOR: #000000"> removeBooks(String[] isbns) </SPAN><SPAN 
id=Codehighlighter1_1378_1436_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1378_1436_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN style="COLOR: #000000">(String isbn : 
isbns) </SPAN><SPAN id=Codehighlighter1_1407_1433_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1407_1433_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;data.remove(isbn);<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp; &nbsp; &nbsp;}</SPAN></SPAN><SPAN 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN></DIV><SPAN 
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单1 
src/tutorial/dao/BookDao.java</SPAN> 
<P>以上代码相信不用解释大家也清楚，我使用ConcurrentMap数据结构存储Book对象，这主要是为了方便检索和保存Book对象；另外，我还将data变量设为静态唯一来模拟应用程序的数据库。</P>
<P>接下来是的数据模型Book类，代码如下：</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"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/None.gif" align=top><SPAN 
style="COLOR: #0000ff">package</SPAN><SPAN style="COLOR: #000000"> 
tutorial.model;<BR><IMG 
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align=top><BR><IMG id=Codehighlighter1_43_593_Open_Image 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_43_593_Closed_Image style="DISPLAY: none" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN 
style="COLOR: #000000"> Book </SPAN><SPAN id=Codehighlighter1_43_593_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_43_593_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">private</SPAN><SPAN 
style="COLOR: #000000"> String isbn;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">private</SPAN><SPAN 
style="COLOR: #000000"> String title;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">private</SPAN><SPAN 
style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">double</SPAN><SPAN 
style="COLOR: #000000"> price;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;<BR><IMG id=Codehighlighter1_130_135_Open_Image 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_130_135_Closed_Image style="DISPLAY: none" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> Book() </SPAN><SPAN 
id=Codehighlighter1_130_135_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_130_135_Open_Text><SPAN style="COLOR: #000000">{ &nbsp; 
&nbsp; &nbsp; &nbsp;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp;<BR><IMG id=Codehighlighter1_193_260_Open_Image 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_193_260_Closed_Image style="DISPLAY: none" 
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src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ContractedSubBlock.gif" 
align=top> &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN 
style="COLOR: #000000"> Book(String isbn, String title, </SPAN><SPAN 
style="COLOR: #0000ff">double</SPAN><SPAN style="COLOR: #000000"> price) 
</SPAN><SPAN id=Codehighlighter1_193_260_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_193_260_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN 
style="COLOR: #000000">.isbn </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000"> isbn;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN 
style="COLOR: #000000">.title </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000"> title;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" align=top> 
&nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN 
style="COLOR: #000000">.price </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000"> price;<BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/ExpandedSubBlockEnd.gif" 
align=top> &nbsp; &nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG 
src="在Struts 2中实现CRUD - Max On Java - BlogJava.files/InBlock.gif" 
align=top><BR><IMG id=Codehighlighter1_288_306_Open_Image 
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