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jsp+ajax实现无刷新上传文件的方法_AJAX相关_
                     2023-05-25
                425人已围观
                
                2023-05-25
                425人已围观
            
简介 jsp+ajax实现无刷新上传文件的方法_AJAX相关_
本文实例讲述了jsp+ajax实现无刷新上传文件的方法。分享给大家供大家参考,具体如下:
列表页:selectaddress.jsp
 js页:ajax_edit.js
 jsp处理页:editaddress.jsp
 上传工具类:UploadUtil.java

思想:由于安全问题,javascript操纵不了文件, 导致ajax不能动态上传文件,所以选择了iframe,
列表页把form表单提交到一个隐式的iframe里面,设置表单的属性
复制代码 代码如下:
enctype='multipart/form-data'  target='hidden_frame'
然后,处理页处理后返回
复制代码 代码如下:
out.println('');
列表页执行回调函数!
selectaddress.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ page import="com.wap3.navigater.service.*" %><%@ page import="com.wap3.navigater.dao.*" %><%@ page import="com.wap3.navigater.pojo.*" %><%@ page import="com.wap3.navigater.util.*" %><%@ page import="java.util.*" %><%@ page import="java.text.*" %>Insert title here <% String action = ParameterUtil.getStringParameter(request,"action",""); FriendurlDao friendurlDao = new IbatisFriendurlDao(); if("del".equals(action)){ int[] urlids = ParameterUtil.getIntArrayParams(request,"urlid"); for(int urlid : urlids){ friendurlDao.deleteFriendurlByP(urlid); } } String navigaterPage = request.getRequestURL().toString(); if(request.getQueryString()!= null){ navigaterPage += "?"+request.getQueryString(); } int categoryId = ParameterUtil.getIntParameter(request,"categoryId",0); if(categoryId == 0){ response.sendRedirect("selectcategory.jsp"); return; } int pageSize = ParameterUtil.getIntParameter(request,"pageSize",10); int pageNo = ParameterUtil.getIntParameter(request,"pageNo",1); String orderBy = ParameterUtil.getStringParameter(request,"orderBy","sequence"); int ascOrDesc = ParameterUtil.getIntParameter(request,"ascOrDesc",0); CategoryDao categoryDao = new IbatisCategoryDao(); Category category = categoryDao.selectCategoryByP(categoryId); String categoryName = category.getCategoryName(); Friendurl friendurl = new Friendurl(); friendurl.setCategoryId(categoryId); friendurl.addOrderBy(orderBy,ascOrDesc); ListfriendurlList = friendurlDao.selectFriendurlByE(friendurl); //分页 int totallpage = (int) Math.ceil(((double) friendurlList .size() * 1.0D)/ (double) pageSize); pageNo =pageNo <= 0 ? 1 : pageNo; pageNo =pageNo > totallpage ? totallpage : pageNo; DataPageUtil datePage = new DataPageUtil(friendurlList ,friendurlList .size(),pageSize, pageNo); boolean hasPrerPage = datePage.hasPrevPage(); boolean hasNextPage= datePage.hasNextPage(); int curpageNo = datePage.getPageNo(); int pageCount = datePage.getPageCount(); friendurlList = DataPageUtil.subList(friendurlList, pageSize, pageNo); if(friendurlList == null && friendurlList.size()<=0) { out.println("没有您需要的数据"); }else{ %><%@include file="inc/header.jsp" %> <% } %><%@ include file="inc/pagination.jsp"%>
条目列表 <% for(Friendurl friendurlTemp:friendurlList) { int urlId = friendurlTemp.getUrlid(); String siteName = friendurlTemp.getSitename(); String alias = friendurlTemp.getAlias(); String address = friendurlTemp.getAddress(); String texturl = friendurlTemp.getTexturl(); String imageurl = friendurlTemp.getImageurl(); String description = friendurlTemp.getDescription(); Date validbegintime = friendurlTemp.getValidbegintime(); Date validendtime = friendurlTemp.getValidendtime(); String mobile = friendurlTemp.getMobile(); int sequence = friendurlTemp.getSequence(); int filter = friendurlTemp.getFilter(); %> 站点名称 站点别名 归类 公司地址 文字链接 图片链接 描述 有效开始时间 有效结束时间 电话 位置排序 推荐序号 <% } %> /> <%=siteName %> <%=alias %> <%=categoryName%> <%=address %> <%=texturl%> <%=description%> <%=validbegintime == null || "".equals(validbegintime)? "--:--" : TimeUtil.date2Str(validbegintime)%> <%=validendtime == null || "".equals(validendtime)? "--:--" : TimeUtil.date2Str(validendtime)%> <%=mobile%> <%=sequence%> <%=filter%> 提示:双击选框修改属性值 
editaddress.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ page import="com.wap3.navigater.util.*" %><%@ page import="com.wap3.navigater.service.*" %><%@ page import="com.wap3.navigater.pojo.*" %><%@ page import="com.wap3.navigater.dao.*" %><%@ page import="java.util.*" %><%@ page import="java.text.*" %><% String target = ParameterUtil.getStringParameter(request,"target",""); String action = ParameterUtil.getStringParameter(request,"action",""); if(!"".equals(target) && target != null && "edit".equals(action)){ int categoryId = 0; CategoryDao categoryDao = null; int urlid=0,status=0,sequence=0,filter=0; String sitename=null,alias=null,texturl=null,imageurl=null,description=null,mobile=null; Date validbegintime=null,validendtime=null; if("imageurl".equals(target)){ System.out.println("图片上传"); UploadUtil.upload(request, response); String imageurlpath = (String) request.getAttribute("imageurlpath"); urlid = Integer.parseInt((String)request.getAttribute("urlid")); imageurl = (String)request.getAttribute("imageurlpath"); }else{ if("categoryName".equals(target)){ String categoryName = ParameterUtil.getStringParameter(request,"categoryName",""); Category category = new Category(); category.setCategoryName(categoryName); categoryDao = new IbatisCategoryDao();
                
                
                
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