doupload.jsp

JavaWeb高级特性书中源代码

<%@ page contentType="text/html;charset=GB2312"%>
<%@ page import="java.util.*,org.apache.commons.fileupload.*" %>
<%@ page import="java.io.*,org.it315.*" %>
用户：<%= request.getParameter("author")%><br>
来自：<%= request.getParameter("company")%><br>
上传了如下文件：
<ul>
<%
	if(!(request instanceof MultipartRequest))
	{
		return;
	}
	
	//设置保存上传文件的目录
	String uploadDir = getServletContext().getRealPath("/upload");
	if (uploadDir == null)
	{
		out.println("无法访问存储目录！");
		return;
	}
	File fUploadDir = new File(uploadDir);
	if(!fUploadDir.exists())
	{
		if(!fUploadDir.mkdir())
		{
			out.println("无法创建存储目录!");
			return;
		}
	}
	
	MultipartRequest mreq = null;
	mreq = (MultipartRequest)request;
	Enumeration fileItemNames = mreq.getFileItemNames();
	while(fileItemNames.hasMoreElements())
	{
		String name = (String)fileItemNames.nextElement();
		FileItem fi = mreq.getFileItem(name);
		String pathSrc = fi.getName();
		int start = pathSrc.lastIndexOf('\\');
		String fileName = pathSrc.substring(start + 1);
		File pathDest = new File(uploadDir, fileName);    	
		fi.write(pathDest);
		out.println("<li>" + fileName + "</li>");
	}
%>
</ul>