Uploadify是JQuery的一個(gè)上傳插件,實(shí)現(xiàn)的效果非常不錯(cuò),帶進(jìn)度顯示。不過(guò)官方提供的實(shí)例時(shí)php版本的,本文將詳細(xì)介紹Uploadify在Aspnet中的使用,您也可以點(diǎn)擊下面的鏈接進(jìn)行演示或下載。
先給大家展示下效果圖:
修改:
報(bào)找不到uploadify-cancel.png文件。找到uploadify.css,找到.uploadify-queue-item .cancel a {,修改文件的路徑。
好多人都說(shuō),在chrome、Firefox上使用uploadify的時(shí)候獲取不到session導(dǎo)致上傳出錯(cuò)。需要手工將session id方法附加參數(shù)中。但是我這里并沒(méi)有這么做,并且在chrome、Firefox上傳沒(méi)問(wèn)題,不知道為什么,也許是因?yàn)槲矣玫淖钚掳娴脑虬伞?/P>
要點(diǎn):
uploadify的js配置已經(jīng)比較全面,在實(shí)際使用的時(shí)候可以適當(dāng)?shù)膭h減一些方法和屬性。
一般情況下的單文件上傳只考慮onSelect、onUploadError和onUploadSuccess即可。
如果是多文件上傳,那么在單文件上傳的基礎(chǔ)上再加上對(duì)整個(gè)隊(duì)列的監(jiān)聽(tīng)onQueueComplete。
開(kāi)始上傳所有文件:$('#file_upload').uploadify('upload', '*');
取消上傳:$('#file_upload').uploadify('cancel', parm);
parm為空:取消上傳第一個(gè)文件。
parm為'*':取消所有的上傳文件。
parm為file id:取消該file id對(duì)應(yīng)的文件。
修改附加的一些變量:$('#file_upload').uploadify("settings","formData",{"name1":"中文name","parm1":"修改后的參數(shù)"});參數(shù)為json,如果該json中的某個(gè)變量已經(jīng)有了,那么覆蓋該屬性,如果沒(méi)有,那么追加該屬性。
服務(wù)端設(shè)置編碼為:upload.setHeaderEncoding("UTF-8");,這樣解析的文件名稱為正常中文。但是解析的附加變量中文亂碼,這里做一次轉(zhuǎn)碼(總感覺(jué)轉(zhuǎn)碼比較low,不知道是哪里配置的不對(duì))。new String(item.getString().getBytes("iso8859-1"),"utf-8")
服務(wù)端最后返回文件保存路徑(這里可以隨便定義返回內(nèi)容)。
步驟:
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',//服務(wù)端地址
'swf' : 'uploadify/uploadify/uploadify.swf',
'buttonImage' : 'uploadify/uploadify/img/chooseFile.jpg',//重載按鈕圖片
'buttonClass' : 'some-class',//重載按鈕樣式
'height':19,//按鈕寬度和高度
'width':76,
'queueID' : 'file_queue',//顯示文件隊(duì)列的一個(gè)div,在頁(yè)面定義
'formData' : {'parm1':'參數(shù)1','year':'2016'},//附加參數(shù),可以在upload參數(shù)中更改
'buttonText':'選擇文件',//按鈕顯示文字,如果有圖片的話,會(huì)被圖片擋住
'fileSizeLimit':'1MB',//文件最大
'auto':false,//自動(dòng)提交
'fileTypeExts' : '*.gif; *.jpg; *.png',//文件類型
'fileTypeDesc' : '只能上傳圖片',//選擇文件的時(shí)候的提示信息
'multi' : true,//多選
'queueSizeLimit' : 3,//隊(duì)列中文件的個(gè)數(shù)
'onSelect' : function(file) {
console.log(file);
alert("選擇文件:" + file.name + "\n類型="+file.type+"\n大小="+file.size);
if(file.size>1024000){//文件太大,取消上傳該文件
alert("文件大小超過(guò)限制!");
$('#file_upload').uploadify('cancel',file.id);
}
},
'onUploadSuccess' : function(file, data, response) {
alert('每個(gè)文件上傳成功后觸發(fā) ' + file.name + ' was successfully uploaded with a response of ' + response + ':' + data);
},
'onUploadComplete' : function(file) {
alert('每個(gè)文件上傳完成,無(wú)論對(duì)錯(cuò)都觸發(fā)! ' + file.name + ' finished processing.');
},
'onUploadError' : function(file, errorCode, errorMsg, errorString) {
alert('上傳出錯(cuò) ' + file.name + ' could not be uploaded: ' + errorString);
},
'onQueueComplete':function(queueData){
alert("隊(duì)列中的所有文件上傳完成后觸發(fā)。\n"+queueData.uploadsSuccessful+'\n'+queueData.uploadsErrored)
},
});
});
});
});
function upload(){
$('#file_upload').uploadify("settings","formData",{"name1":"中文name","parm1":"修改后的參數(shù)"});
$('#file_upload').uploadify('upload', '*');//上傳所有文件
}
function cancel(){
$('#file_upload').uploadify('cancel', '*');//取消所有文件
}
function destroy(){
alert("取消upload上傳,變成原來(lái)樣式!");
$('#file_upload').uploadify('destroy');//destory
}
</script>
<body>
<div class="easyui-panel" title="說(shuō)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()">開(kāi)始上傳</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="cancel()">取消上傳</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>
服務(wù)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("獲取session,可以根據(jù)這個(gè)session進(jìn)行一些其他的判斷" + 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;
}
// 擴(kuò)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("表單內(nèi)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);
}
}