FileUpload组件

FileUpload上传组件依赖commons-io组件的支持，上传文件依赖DiskFileItemFactory、ServletFileUpload、FileItem，parseRequest(request)方法将request请求中封装的所有信息(包含非文件上传控件)封装至List<FileItem>中。

<%@ page contentType="text/html" pageEncoding="GBK"%>
<%@ page import="java.util.*"%>
<%@ page import="java.io.*"%>

<%@ page import="org.apache.commons.fileupload.disk.DiskFileItemFactory"%>
<%@ page import="org.apache.commons.fileupload.servlet.ServletFileUpload"%>
<%@ page import="org.apache.commons.fileupload.FileItem"%>

<%@ page import="org.xiong.Rand.RandName"%>
<%
    DiskFileItemFactory dff=new DiskFileItemFactory();    
    dff.setRepository(new File(this.getServletContext().getRealPath("/")+"FileUploadDemo"+File.separator+"tempUpload"));
    ServletFileUpload sfu= new ServletFileUpload(dff);
    sfu.setFileSizeMax(10*1024*1024);
    List<FileItem> allFileItems=sfu.parseRequest(request);
    Iterator<FileItem> iterItems=allFileItems.iterator();
    while(iterItems.hasNext())
    {
        FileItem fitem=iterItems.next();
        if(!fitem.isFormField())
        {
            InputStream srcStream=fitem.getInputStream();
            OutputStream outStream=null;
            String oriFileName=fitem.getName();            
            String extName=oriFileName.substring(oriFileName.lastIndexOf("."));            
            RandName newName=new RandName(request.getRemoteAddr());            
            String completeNewName=newName.getRandName()+extName;            
            try
            {
                outStream=new FileOutputStream(new File(this.getServletContext().getRealPath("/")+"FileUploadDemo"+File.separator+"upload"+File.separator+completeNewName));
                int temp=0;
                byte[] content=new byte[1024];
                while((temp=srcStream.read(content))!=-1)
                {
                    outStream.write(content);
                }            
            }
            catch(Exception ex)
            {
                ex.printStackTrace();
            }
            finally
            {
                try
                {
                    outStream.close();
                    srcStream.close();
                }
                catch(Exception ex)
                {
                        ex.printStackTrace();
                }
            }
        }
        else
        {
            String fieldName=fitem.getFieldName();
            String fieldValue=fitem.getString();
%>
        <h1><%=fieldName%>========<%=fieldValue%></h1>
<%            
        }
    }
    
%>

　　Struts中集成了FileUpload组件(以及commons-io)，