📄 在struts 2中实现文件上传 - max on java - blogjava.htm
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style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">/struts-tags</SPAN> <SPAN
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<SPAN style="COLOR: #ff00ff">DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"><</SPAN> <SPAN style="COLOR: #800000">html
</SPAN><SPAN style="COLOR: #ff0000">xmlns</SPAN> <SPAN
style="COLOR: #0000ff">="http://www.w3.org/1999/xhtml"</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">Struts 2 File Upload</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
style="COLOR: #0000ff"><</SPAN> <SPAN style="COLOR: #800000">body</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">div </SPAN><SPAN style="COLOR: #ff0000">style</SPAN>
<SPAN style="COLOR: #0000ff">="padding: 3px; border: solid 1px #cccccc;
text-align: center"</SPAN> <SPAN style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN> <SPAN style="COLOR: #800000">img </SPAN><SPAN
style="COLOR: #ff0000">src</SPAN> <SPAN
style="COLOR: #0000ff">='UploadImages/<s:property </SPAN><SPAN
style="COLOR: #ff0000">value</SPAN> <SPAN
style="COLOR: #0000ff">="imageFileName"</SPAN> <SPAN
style="COLOR: #ff0000"></SPAN><SPAN style="COLOR: #0000ff">/></SPAN> <SPAN
style="COLOR: #000000">' /><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN> <SPAN style="COLOR: #800000">br </SPAN><SPAN
style="COLOR: #0000ff">/></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">s:property </SPAN><SPAN
style="COLOR: #ff0000">value</SPAN> <SPAN
style="COLOR: #0000ff">="caption"</SPAN> <SPAN
style="COLOR: #ff0000"></SPAN><SPAN style="COLOR: #0000ff">/></SPAN> <SPAN
style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"></</SPAN> <SPAN style="COLOR: #800000">div</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff"></</SPAN>
<SPAN style="COLOR: #800000">body</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR></SPAN><SPAN
style="COLOR: #0000ff"></</SPAN> <SPAN style="COLOR: #800000">html</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> </DIV><SPAN
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单4 ShowUpload.jsp</SPAN>
<P>ShowUpload.jsp获得imageFileName，将其UploadImages组成URL，从而将上传的图像显示出来。</P>
<P>然后是Action的配置文件：</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"><SPAN
style="COLOR: #0000ff"><?</SPAN> <SPAN style="COLOR: #ff00ff">xml
version="1.0" encoding="UTF-8"</SPAN> <SPAN style="COLOR: #0000ff">?></SPAN>
<SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN
style="COLOR: #0000ff"><!</SPAN> <SPAN style="COLOR: #ff00ff">DOCTYPE struts
PUBLIC<BR> "-//Apache Software Foundation//DTD Struts Configuration
2.0//EN"<BR> "http://struts.apache.org/dtds/struts-2.0.dtd"</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #0000ff"><</SPAN>
<SPAN style="COLOR: #800000">struts</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">package </SPAN><SPAN style="COLOR: #ff0000">name</SPAN>
<SPAN style="COLOR: #0000ff">="fileUploadDemo"</SPAN> <SPAN
style="COLOR: #ff0000">extends</SPAN> <SPAN
style="COLOR: #0000ff">="struts-default"</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">action </SPAN><SPAN style="COLOR: #ff0000">name</SPAN>
<SPAN style="COLOR: #0000ff">="fileUpload"</SPAN> <SPAN
style="COLOR: #ff0000">class</SPAN> <SPAN
style="COLOR: #0000ff">="tutorial.FileUploadAction"</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN
style="COLOR: #0000ff"><</SPAN> <SPAN style="COLOR: #800000">interceptor-ref
</SPAN><SPAN style="COLOR: #ff0000">name</SPAN> <SPAN
style="COLOR: #0000ff">="fileUploadStack"</SPAN> <SPAN
style="COLOR: #ff0000"></SPAN><SPAN style="COLOR: #0000ff">/></SPAN> <SPAN
style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">result </SPAN><SPAN style="COLOR: #ff0000">name</SPAN>
<SPAN style="COLOR: #0000ff">="success"</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000">/ShowUpload.jsp</SPAN> <SPAN
style="COLOR: #0000ff"></</SPAN> <SPAN style="COLOR: #800000">result</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"></</SPAN> <SPAN
style="COLOR: #800000">action</SPAN> <SPAN style="COLOR: #0000ff">></SPAN>
<SPAN style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"></</SPAN> <SPAN style="COLOR: #800000">package</SPAN>
<SPAN style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff"></</SPAN>
<SPAN style="COLOR: #800000">struts</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> </DIV><SPAN
style="FONT-SIZE: smaller; FONT-STYLE: italic">清单5 struts.xml</SPAN>
<P>fileUpload Action显式地应用fileUploadStack的拦截器。</P>
<P>最后是web.xml配置文件：</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"><SPAN
style="COLOR: #0000ff"><?</SPAN> <SPAN style="COLOR: #ff00ff">xml
version="1.0" encoding="UTF-8"</SPAN> <SPAN style="COLOR: #0000ff">?></SPAN>
<SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff"><</SPAN>
<SPAN style="COLOR: #800000">web-app </SPAN><SPAN
style="COLOR: #ff0000">id</SPAN> <SPAN style="COLOR: #0000ff">="WebApp_9"</SPAN>
<SPAN style="COLOR: #ff0000">version</SPAN> <SPAN
style="COLOR: #0000ff">="2.4"</SPAN> <SPAN style="COLOR: #ff0000"><BR>
xmlns</SPAN> <SPAN
style="COLOR: #0000ff">="http://java.sun.com/xml/ns/j2ee"</SPAN> <SPAN
style="COLOR: #ff0000"><BR> xmlns:xsi</SPAN> <SPAN
style="COLOR: #0000ff">="http://www.w3.org/2001/XMLSchema-instance"</SPAN> <SPAN
style="COLOR: #ff0000"><BR> xsi:schemaLocation</SPAN> <SPAN
style="COLOR: #0000ff">="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">display-name</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000">Struts 2
Fileupload</SPAN> <SPAN style="COLOR: #0000ff"></</SPAN> <SPAN
style="COLOR: #800000">display-name</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">filter</SPAN> <SPAN style="COLOR: #0000ff">></SPAN>
<SPAN style="COLOR: #000000"><BR> </SPAN><SPAN
style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">filter-name</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN
style="COLOR: #000000">struts-cleanup</SPAN> <SPAN
style="COLOR: #0000ff"></</SPAN> <SPAN
style="COLOR: #800000">filter-name</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
</SPAN><SPAN style="COLOR: #0000ff"><</SPAN> <SPAN
style="COLOR: #800000">filter-class</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
org.apache.struts2.dispatcher.ActionContextCleanUp<BR>
</SPAN><SPAN style="COLOR: #0000ff"></</SPAN> <SPAN
style="COLOR: #800000">filter-class</SPAN> <SPAN
style="COLOR: #0000ff">></SPAN> <SPAN style="COLOR: #000000"><BR>
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