📄 入門 29 - 檔案上傳 - javaworld@tw.htm
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<DIV class=codeHeader
style="BORDER-BOTTOM-STYLE: solid"><B>UploadAction.java</B></DIV>
<DIV class=codeContent><PRE><SPAN class=java-keyword>package</SPAN> onlyfun.caterpillar;
<SPAN class=java-keyword>import</SPAN> java.io.*;
<SPAN class=java-keyword>import</SPAN> javax.servlet.http.*;
<SPAN class=java-keyword>import</SPAN> org.apache.struts.action.*;
<SPAN class=java-keyword>import</SPAN> org.apache.struts.upload.*;
<SPAN class=java-keyword>public</SPAN> class UploadAction <SPAN class=java-keyword>extends</SPAN> Action {
<SPAN class=java-keyword>public</SPAN> ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
<SPAN class=java-keyword>throws</SPAN> Exception {
UploadForm fileForm = (UploadForm) form;
FormFile file = fileForm.getFile();
FileOutputStream fileOutput = <SPAN class=java-keyword>new</SPAN> FileOutputStream(<SPAN class=java-quote>"/home/caterpillar/files/"</SPAN> + file.getFileName());
fileOutput.write(file.getFileData());
fileOutput.flush();
fileOutput.close();
<SPAN class=java-keyword>return</SPAN> mapping.findForward(<SPAN class=java-quote>"success"</SPAN>);
}
}</PRE></DIV></DIV><BR>至於JSP網頁的部份，我們可以這麼撰寫表單：
<DIV class=code
style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid">
<DIV class=codeContent><PRE><html:form action=<SPAN class=java-quote>"/Upload"</SPAN> method=<SPAN class=java-quote>"post"</SPAN> enctype=<SPAN class=java-quote>"multipart/form-data"</SPAN>>
選擇檔案:<html:file property=<SPAN class=java-quote>"file"</SPAN> />
<html:submit>上傳</html:submit>
</html:form></PRE></DIV></DIV><BR> 剩下的就是配置struts-config.xml中的ActionForm與Action對應了，相信對現在的您來說已經不難了，這部份請參考之前的主題。
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