jsp实现多文件上传，例子

如果你用webwork ，和一个文件上传是类似的。只是用数组接受文件和文件名。
jsp页面
<%@ page pageEncoding="UTF-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>using commons fileupload to upload file </title>
</head><body>
<div align="center">
  <p>请选择需要上传的文件</p>
  <form action="<%=request.getContextPath()%>/kK.do" method="post" enctype="multipart/form-data" >
    <table width="334" border="1">
      <tr>
        <td width="150">上传人：</td>
        <td width="168"><label>
          <input type="text" name="name" id="name" />action页面
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.oy.struts.action;import java.io.File;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import com.oy.image.model.LoginUser;
import com.oy.image.service.ImageManager;
public class KKAction extends Action {
    private static final long serialVersionUID = 2431664260164700200L;
    private ServletContext sc;
    private String savePath;
    private ImageManager imageManager;
       public void setImageManager(ImageManager imageManager) {
        this.imageManager = imageManager;
    }    /**
     * Method execute
     *
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return ActionForward
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
            HttpServletResponse response) {

        savePath =request.getSession().getServletContext().getInitParameter("uploads");

        //savePath=config.getServletContext().getInitParameter("savePath");
        System.out.println("+++++++++++++++++++"+savePath);
//        if(!new File(savePath).isDirectory())
        System.out.println(new File(savePath).getAbsolutePath());
        if(!new File(savePath).exists())
        {            new File(savePath).mkdirs();
        }
        sc = request.getSession().getServletContext();

        DiskFileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);
        String userName = null;
        String url = null;
        try {
            List items = upload.parseRequest(request);
            Iterator it = items.iterator();
            while (it.hasNext()) {
                FileItem item = (FileItem) it.next();
                if (item.isFormField()) {
                    userName = item.getString("UTF-8");
                    System.out.println("表单的参数名称：" + item.getFieldName() + ",对应的参数值："
                            + item.getString("UTF-8"));
                } else {
                    if (item.getName() != null && !item.getName().equals("")) {                        System.out.println("上传文件的大小：" + item.getSize());
                        System.out.println("上传文件的类型：" + item.getContentType());
                        System.out.println("上传文件的名称：" + item.getName());                        File tempFile = new File(item.getName());
                        File file = new File(sc.getRealPath("/") + savePath, tempFile.getName());
                        url = file.getAbsolutePath();
                        System.out.println(file.getAbsolutePath());
                        item.write(file);                        if (userName != null & userName != "" & url != null & url != "") {
                            LoginUser user = new LoginUser();
                            user.setUername(userName);
                            user.setUerheadurl(url);
                            System.out.println(userName);
                            System.out.println(url);
                            imageManager.save(user);
                        }                        request.setAttribute("upload.message", "上传文件成功！");                    } else {
                        request.setAttribute("upload.message", "没有选择上传文件！");
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            request.setAttribute("upload.message", "上传文件不成功！");
        }
        return null;
    }

}
        </label></td>
      </tr>
      <tr>
        <td>上传文件：</td>
        <td><label>
          <input type="file" name="uploadfile" id="uploadfile" />
        </label></td>
        <td><label>
          <input type="file" name="uploadfile2" id="uploadfile2" />
        </label></td>
      </tr>
      <tr>
        <td><label>
          <input type="reset" name="button" id="button" value="重置" />
        </label></td>
        <td><label>
          <input type="submit" name="button2" id="button2" value="提交" />
        </label></td>
      </tr>
      <tr>
        <td> </td>
        <td> </td>
      </tr>
    </table>
  </form>
  <p> </p>
  <p>   </p>
</div>
</body>
</html>
我没有做验证，自己看着办
用数组来接受穿过来的文件路径之后用FOR循环进行文件上传哦嘿嘿！~我是个新手希望能和大虾们学习学习

调试易

jsp实现多文件上传，例子

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