关于jsp的问题

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>选择要上传的文件</title>
    </head>
    <body>
        <form action="UploadServlet" method="POST" enctype="multipart/form-data">
            <h3>
                设置目标文件位置:<input type="text" name="PATH" value="" size="30" /><br>
                请选择要上传文件:<input type="file" name="FILE1" value="" width="30" /><br>
                <input type="submit" value="上传" />
            </h3>
        </form>
    </body>
</html>
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/package com.netbeans.web;import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jspsmart.upload.*;
import javax.servlet.ServletConfig;/**
*
* @author Administrator
*/
public class UploadServlet extends HttpServlet {
   private ServletConfig config=null;
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
   final public void init(ServletConfig config)throws ServletException{
       this.config=config;
   }
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=GBK");
        PrintWriter out = response.getWriter();
        int count=0;
        SmartUpload myUpload=new SmartUpload();
        try {
            /* TODO output your page here*/
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet UploadServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h3>");
            myUpload.initialize(config, request, response);
            myUpload.upload();
            String path=myUpload.getRequest().getParameter("PATH");
            count=myUpload.save(path);
            out.println("已经上传"+count+"个文件<br>");
            out.println("已经上传文件路径"+path);

        }catch(Exception e){
            out.println("错误:"+e.toString());
        }

        finally {
            out.println("</h3></body>");
            out.println("</html>");
            out.close();
        }
    }     // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。单击左侧的 + 号以编辑代码。">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }     /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>}jspsmart组件到网上下载.很多...一般小于2M的文件用jspsmart效果比较好
因为以前做过这样的例子
我就要上传图片为例说明一下
<script>
function f_onchange(i){
document.getElementById("img"+i).src=document.getElementById("file"+i).value;
document.getElementById("div"+i).style.display="block";
}
</script>
<form name="form1" enctype="multipart/form-data" method="post" action="<%=request.getContextPath()%>/Action/PhotoAction.jsp">
     <div class="fileDiv"><input onchange="f_onchange(1)" type="FILE" name="photo"  size=40 id="file1"></div>
    <div class="fileDiv"><input onchange="f_onchange(2)" type="FILE" name="photo"  size=40 id="file2"></div>
     <div class="fileDiv"><input onchange="f_onchange(3)" type="FILE" name="photo"  size=40 id="file3"></div>
    <div class="fileDiv"><input onchange="f_onchange(4)" type="FILE" name="photo"  size=40 id="file4"></div>
     <div class="fileDiv"><input onchange="f_onchange(5)" type="FILE" name="photo"  size=40 id="file5"></div>
    <div class="fileDiv"><input onchange="f_onchange(6)" type="FILE" name="photo"  size=40 id="file6"></div>
    <input type="hidden" name="txtUid" value=<%=uid%>>
    <div class="fileDiv">
    <input type="submit" onclick="return f_check()" name="OK" value="确认上传" >
    <input type="reset" name="Close" value="取消上传">
    </div>

</form>
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<jsp:directive.page import="com.wad.bean.Photobean"/>
<jsp:directive.page import="java.text.SimpleDateFormat"/>
<jsp:directive.page import="com.wad.dao.PhotoDao"/>
<jsp:directive.page import="com.jspsmart.upload.SmartUpload"/>
<jsp:directive.page import="com.jspsmart.upload.Files"/>
<jsp:directive.page import="com.jspsmart.upload.File"/>
<jsp:directive.page import="java.util.ArrayList"/>
<jsp:directive.page import="java.util.List"/>
<% request.setCharacterEncoding("gbk");  //设置编码格式
    //得到上传对象
SmartUpload su=new SmartUpload();
//初始化
su.initialize(pageContext);
//允许上传的文件类型
su.setAllowedFilesList("jpg,gif");
//上传
su.upload();
//保存上传文件
su.save("/upload");
int uid=Integer.parseInt(su.getRequest().getParameter("txtUid"));
//int uid=1;
//获取文件路径     获取文件集合的对象
Files fils=su.getFiles();
//创建一个图片的集合
List<Photobean> phoList=new ArrayList<Photobean>();
for(int i=0;i<fils.getCount();i++){
File fil=fils.getFile(i);   //循环获取文章
if(fil.getFileName().length()>0){
Photobean photo=new Photobean();   //实例化一个图片对向对象
String path=request.getContextPath()+"/upload/"+fil.getFileName();   //拼凑文件路径
path=new String(path.getBytes("ISO-8859-1"),"gbk");
photo.setP_path(path);   //设置图片路径
photo.setP_name(fil.getFileName().substring(0,fil.getFileName().indexOf(".")));
photo.setP_state(1);  //默认为显示
photo.setP_uid(uid);    //用来测试数据  ************************************************
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
photo.setP_outTime(sdf.format(new Date()));   //设置图片上传时间
phoList.add(photo);    //将图片保存到集合
}
}
PhotoDao dao=new PhotoDao();
Boolean bool=dao.addPhotoS(phoList);
if(bool){
out.print("添加成功");
}else{
out.print("添加失败");
}
%>

调试易

关于jsp的问题

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