swfupload + commons-fileupload实现文件批量上传，带百分比进度条
2012-10-13 15:09
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swfupload是一个操纵flash上传文件的javascript库，提供客户端实现，官网：http://code.google.com/p/swfupload/
fileupload是文件上传的服务器端实现，官网：http://commons.apache.org/fileupload/
本文的环境是在eclipse中配置好本机上的tomcat7上实现。具体细节参见源代码。
有几处加以说明：
1> 这里的实现是在点击"upload"选择文件以后自动上传，如果想自己控制上传，可以将handlers.js中的this.startUpload注释掉，同时在index.jsp中初始化SWFupload的custom_settings中加一个类似于cancelButtonId的startButton按钮，然后在下面html里增加一个相对应的startButton,并且onclick="upload.startUpload();" 这样可以通过点击这个按钮来实现文件上传。
2> 原有的上传进度条是没有百分比的，其设置在handlers.js中的uploadProgress函数中，修改Line 130为progress.setStatus("Uploading...("+percent+" %)");
3> swfupload在firefox等有些浏览器中无法带上session,因此如果页面需要带有session信息，那么只能手动指定，可以在index.jsp中先得到sessionID: <% String sessionID = session.getId(); System.out.println("session is:" + sessionID); %> ，然后在js中调用：
upload_url: "<%=request.getContextPath()%>/upload.jsp;jsessionid=" + '<%=sessionID%>',
4> 参数传递：如果index.jsp在提交页面的时候希望传递一些参数，比如sbmtForm=myForm，那么可以：
post_params: { "sbmtForm": 'myForm' },
use_query_string : true,
源码：http://download.csdn.net/detail/sundongsdu/4642497
两个主要文件列此：
index.jsp
<%@ page contentType="text/html;charset=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>
<title>SWFUpload Demos - External Interface Demo</title>
<% String sessionID = session.getId(); System.out.println("session is:" + sessionID); %>
<link href="swfupload/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="swfupload/swfupload.js"></script>
<script type="text/javascript" src="swfupload/fileprogress.js"></script>
<script type="text/javascript" src="swfupload/handlers.js"></script>
<script type="text/javascript">
var upload;
window.onload = function() {
var settings = {
flash_url : "<%=request.getContextPath()%>/swfupload/swfupload.swf",
upload_url: "<%=request.getContextPath()%>/upload.jsp;jsessionid=" + '<%=sessionID%>',
post_params: { "sbmtForm": 'myForm' },
use_query_string : true,
file_size_limit : "100 MB",
file_types : "*.*",
file_types_description : "All Files",
file_upload_limit : 10,
file_queue_limit : 0,
custom_settings : {
progressTarget : "fsUploadProgress",
cancelButtonId : "btnCancel",
// startButton:"startButton",
percentage:"percentage"
},
debug: false,
// Button Settings
button_image_url : "<%=request.getContextPath()%>/swfupload/XPButtonUploadText_61x22.png", // Relative to the SWF file
button_placeholder_id : "spanButtonPlaceHolder",
button_width: 61,
button_height: 22,
// The event handler functions are defined in handlers.js
file_dialog_start_handler : fileDialogStart,
file_queued_handler : fileQueued,
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_start_handler : uploadStart,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete
};
upload = new SWFUpload(settings);
};
</script>
</head>
<body>
<div id="content">
<form id="form1" method="post" enctype="multipart/form-data">
<div class="fieldset flash" id="fsUploadProgress">
<span class="legend">Upload Queue</span>
</div>
<div style="padding-left: 5px;">
<span id="spanButtonPlaceHolder"></span>
<input id="btnCancel" type="button" value="Cancel" onclick="cancelQueue(upload);" disabled="disabled" style="margin-left: 2px; height: 22px; font-size: 8pt;"/>
</div>
</form>
</div>
</body>
</html>
upload.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="org.apache.commons.fileupload.servlet.*" %>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import="org.apache.commons.fileupload.disk.*" %>
<%@ page import="org.apache.commons.io.*" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%
if (ServletFileUpload.isMultipartContent(request))
{
try {
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(1024*400);
File tmpFile = new File(this.getServletContext().getRealPath("/") + "WEB-INF/tmpfile");
if (!tmpFile.exists())
FileUtils.forceMkdir(tmpFile);
factory.setRepository(tmpFile);
ServletFileUpload u = new ServletFileUpload(factory);
u.setHeaderEncoding("utf-8");
u.setSizeMax(1024*1024*400);
String uploadPath = this.getServletContext().getRealPath("/") + "WEB-INF/uploadfile";
File f = new File(uploadPath);
if (!f.exists())
FileUtils.forceMkdir(f);
List list = u.parseRequest(request);
Iterator it = list.iterator();
FileItem item = null;
while (it.hasNext()) {
item = (FileItem) it.next();
if (!item.isFormField()) {
String filename = uploadPath + "/" + item.getName();
item.write(new File(filename));
}
}
}
catch (Exception e){
e.printStackTrace();
}
}
%>
fileupload是文件上传的服务器端实现，官网：http://commons.apache.org/fileupload/
本文的环境是在eclipse中配置好本机上的tomcat7上实现。具体细节参见源代码。
有几处加以说明：
1> 这里的实现是在点击"upload"选择文件以后自动上传，如果想自己控制上传，可以将handlers.js中的this.startUpload注释掉，同时在index.jsp中初始化SWFupload的custom_settings中加一个类似于cancelButtonId的startButton按钮，然后在下面html里增加一个相对应的startButton,并且onclick="upload.startUpload();" 这样可以通过点击这个按钮来实现文件上传。
2> 原有的上传进度条是没有百分比的，其设置在handlers.js中的uploadProgress函数中，修改Line 130为progress.setStatus("Uploading...("+percent+" %)");
3> swfupload在firefox等有些浏览器中无法带上session,因此如果页面需要带有session信息，那么只能手动指定，可以在index.jsp中先得到sessionID: <% String sessionID = session.getId(); System.out.println("session is:" + sessionID); %> ，然后在js中调用：
upload_url: "<%=request.getContextPath()%>/upload.jsp;jsessionid=" + '<%=sessionID%>',
4> 参数传递：如果index.jsp在提交页面的时候希望传递一些参数，比如sbmtForm=myForm，那么可以：
post_params: { "sbmtForm": 'myForm' },
use_query_string : true,
源码：http://download.csdn.net/detail/sundongsdu/4642497
两个主要文件列此：
index.jsp
<%@ page contentType="text/html;charset=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>
<title>SWFUpload Demos - External Interface Demo</title>
<% String sessionID = session.getId(); System.out.println("session is:" + sessionID); %>
<link href="swfupload/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="swfupload/swfupload.js"></script>
<script type="text/javascript" src="swfupload/fileprogress.js"></script>
<script type="text/javascript" src="swfupload/handlers.js"></script>
<script type="text/javascript">
var upload;
window.onload = function() {
var settings = {
flash_url : "<%=request.getContextPath()%>/swfupload/swfupload.swf",
upload_url: "<%=request.getContextPath()%>/upload.jsp;jsessionid=" + '<%=sessionID%>',
post_params: { "sbmtForm": 'myForm' },
use_query_string : true,
file_size_limit : "100 MB",
file_types : "*.*",
file_types_description : "All Files",
file_upload_limit : 10,
file_queue_limit : 0,
custom_settings : {
progressTarget : "fsUploadProgress",
cancelButtonId : "btnCancel",
// startButton:"startButton",
percentage:"percentage"
},
debug: false,
// Button Settings
button_image_url : "<%=request.getContextPath()%>/swfupload/XPButtonUploadText_61x22.png", // Relative to the SWF file
button_placeholder_id : "spanButtonPlaceHolder",
button_width: 61,
button_height: 22,
// The event handler functions are defined in handlers.js
file_dialog_start_handler : fileDialogStart,
file_queued_handler : fileQueued,
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_start_handler : uploadStart,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete
};
upload = new SWFUpload(settings);
};
</script>
</head>
<body>
<div id="content">
<form id="form1" method="post" enctype="multipart/form-data">
<div class="fieldset flash" id="fsUploadProgress">
<span class="legend">Upload Queue</span>
</div>
<div style="padding-left: 5px;">
<span id="spanButtonPlaceHolder"></span>
<input id="btnCancel" type="button" value="Cancel" onclick="cancelQueue(upload);" disabled="disabled" style="margin-left: 2px; height: 22px; font-size: 8pt;"/>
</div>
</form>
</div>
</body>
</html>
upload.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="org.apache.commons.fileupload.servlet.*" %>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import="org.apache.commons.fileupload.disk.*" %>
<%@ page import="org.apache.commons.io.*" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%
if (ServletFileUpload.isMultipartContent(request))
{
try {
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(1024*400);
File tmpFile = new File(this.getServletContext().getRealPath("/") + "WEB-INF/tmpfile");
if (!tmpFile.exists())
FileUtils.forceMkdir(tmpFile);
factory.setRepository(tmpFile);
ServletFileUpload u = new ServletFileUpload(factory);
u.setHeaderEncoding("utf-8");
u.setSizeMax(1024*1024*400);
String uploadPath = this.getServletContext().getRealPath("/") + "WEB-INF/uploadfile";
File f = new File(uploadPath);
if (!f.exists())
FileUtils.forceMkdir(f);
List list = u.parseRequest(request);
Iterator it = list.iterator();
FileItem item = null;
while (it.hasNext()) {
item = (FileItem) it.next();
if (!item.isFormField()) {
String filename = uploadPath + "/" + item.getName();
item.write(new File(filename));
}
}
}
catch (Exception e){
e.printStackTrace();
}
}
%>
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