Uploadify是JQuery的一个上传插件,实现的效果非常不错,带进度显示。不过官方提供的实例时php版本的,本文将详细介绍Uploadify在Aspnet中的使用,您也可以点击下面的链接进行演示或下载。
先给大家展示下效果图:
修改:
报找不到uploadify-cancel.png文件。找到uploadify.css,找到.uploadify-queue-item .cancel a {,修改文件的路径。
好多人都说,在chrome、Firefox上使用uploadify的时候获取不到session导致上传出错。需要手工将session id方法附加参数中。但是我这里并没有这么做,并且在chrome、Firefox上传没问题,不知道为什么,也许是因为我用的最新版的原因吧。
要点:
uploadify的js配置已经比较全面,在实际使用的时候可以适当的删减一些方法和属性。
一般情况下的单文件上传只考虑onSelect、onUploadError和onUploadSuccess即可。
如果是多文件上传,那么在单文件上传的基础上再加上对整个队列的监听onQueueComplete。
开始上传所有文件:$('#file_upload').uploadify('upload', '*');
取消上传:$('#file_upload').uploadify('cancel', parm);
parm为空:取消上传第一个文件。
parm为'*':取消所有的上传文件。
parm为file id:取消该file id对应的文件。
修改附加的一些变量:$('#file_upload').uploadify("settings","formData",{"name1":"中文name","parm1":"修改后的参数"});参数为json,如果该json中的某个变量已经有了,那么覆盖该属性,如果没有,那么追加该属性。
服务端设置编码为:upload.setHeaderEncoding("UTF-8");,这样解析的文件名称为正常中文。但是解析的附加变量中文乱码,这里做一次转码(总感觉转码比较low,不知道是哪里配置的不对)。new String(item.getString().getBytes("iso8859-1"),"utf-8")
服务端最后返回文件保存路径(这里可以随便定义返回内容)。
步骤:
配置uploadify
<%@ page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"%>
<%String path = request.getContextPath();%>
<%String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<base href="<%=basePath %>">
<title></title>
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.4.3/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.4.3/themes/icon.css">
<script type="text/javascript" src="jquery-easyui-1.4.3/jquery.min.js"></script>
<script type="text/javascript" src="jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
<script type="text/javascript" src="uploadify/uploadify/jquery.uploadify.min.js"></script>
<link rel="stylesheet" type="text/css" href="uploadify/uploadify/uploadify.css" />
</head>
<script>
$(function(){
$(function() {
$(function() {
$('#file_upload').uploadify({
'uploader' : '<%=basePath%>/UploadServlet',//服务端地址
'swf' : 'uploadify/uploadify/uploadify.swf',
'buttonImage' : 'uploadify/uploadify/img/chooseFile.jpg',//重载按钮图片
'buttonClass' : 'some-class',//重载按钮样式
'height':19,//按钮宽度和高度
'width':76,
'queueID' : 'file_queue',//显示文件队列的一个div,在页面定义
'formData' : {'parm1':'参数1','year':'2016'},//附加参数,可以在upload参数中更改
'buttonText':'选择文件',//按钮显示文字,如果有图片的话,会被图片挡住
'fileSizeLimit':'1MB',//文件最大
'auto':false,//自动提交
'fileTypeExts' : '*.gif; *.jpg; *.png',//文件类型
'fileTypeDesc' : '只能上传图片',//选择文件的时候的提示信息
'multi' : true,//多选
'queueSizeLimit' : 3,//队列中文件的个数
'onSelect' : function(file) {
console.log(file);
alert("选择文件:" + file.name + "\n类型="+file.type+"\n大小="+file.size);
if(file.size>1024000){//文件太大,取消上传该文件
alert("文件大小超过限制!");
$('#file_upload').uploadify('cancel',file.id);
}
},
'onUploadSuccess' : function(file, data, response) {
alert('每个文件上传成功后触发 ' + file.name + ' was successfully uploaded with a response of ' + response + ':' + data);
},
'onUploadComplete' : function(file) {
alert('每个文件上传完成,无论对错都触发! ' + file.name + ' finished processing.');
},
'onUploadError' : function(file, errorCode, errorMsg, errorString) {
alert('上传出错 ' + file.name + ' could not be uploaded: ' + errorString);
},
'onQueueComplete':function(queueData){
alert("队列中的所有文件上传完成后触发。\n"+queueData.uploadsSuccessful+'\n'+queueData.uploadsErrored)
},
});
});
});
});
function upload(){
$('#file_upload').uploadify("settings","formData",{"name1":"中文name","parm1":"修改后的参数"});
$('#file_upload').uploadify('upload', '*');//上传所有文件
}
function cancel(){
$('#file_upload').uploadify('cancel', '*');//取消所有文件
}
function destroy(){
alert("取消upload上传,变成原来样式!");
$('#file_upload').uploadify('destroy');//destory
}
</script>
<body>
<div class="easyui-panel" title="说明" style="margin-bottom:15px">
</div>
<div class="easyui-panel" style="text-align:center;margin-bottom:15px">
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="upload()">开始上传</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="cancel()">取消上传</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="destroy()">destroy</a>
<input type="file" name="file_upload" id="file_upload" />
<div id="file_queue" style="width:400px;height:10px;position:absolute;z-index:999"></div>
</div>
</body>
</html>
服务端
package com.servlet;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
/**
* Servlet implementation class UploadServlet
*/
@WebServlet(name="UploadServlet",urlPatterns="/UploadServlet")
public class UploadServlet extends HttpServlet {
private static final long serialVersionUID = -6483558339095298703L;
/**
* @see HttpServlet#HttpServlet()
*/
public UploadServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("获取session,可以根据这个session进行一些其他的判断" + request.getSession().getId());
SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd");
String remotePath = File.separator + "download" + File.separator + sdf.format(new Date()) + File.separator;
String savePath = remotePath;
File dfile = new File(savePath);
if (!dfile.exists()) {
dfile.mkdirs();
}
DiskFileItemFactory fac = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(fac);
upload.setHeaderEncoding("UTF-8");
List<FileItem> fileList = null;
try {
fileList = upload.parseRequest(request);
} catch (FileUploadException ex) {
return;
}
Iterator<FileItem> it = fileList.iterator();
String name = "";
String extName = "";
while (it.hasNext()) {
FileItem item = it.next();
if (!item.isFormField()) {
name = item.getName();
long size = item.getSize();
String type = item.getContentType();
System.out.println("文件=" + name + " " + size + " " + type);
if (name == null || name.trim().equals("")) {
continue;
}
// 扩展名格式:
if (name.lastIndexOf(".") >= 0) {
extName = name.substring(name.lastIndexOf("."));
}
File file = null;
do {
// 生成文件名:
name = UUID.randomUUID().toString();
file = new File(savePath + name + extName);
} while (file.exists());
File saveFile = new File(savePath + name + extName);
try {
item.write(saveFile);
} catch (Exception e) {
e.printStackTrace();
}
}else if(item.isFormField()){
System.out.println("表单内容:" + item.getFieldName() + "=" + new String(item.getString().getBytes("iso8859-1"),"utf-8"));
}
}
String requestPath = remotePath + name + extName;
request.getSession().setAttribute(requestPath, requestPath);
response.getWriter().write(savePath + name + extName);
}
}