jQuery File Upload blueimp with struts2 简单试用

Official Site的话随便搜索就可以去了

另外新版PHP似乎都有问题  虽然图片都可以上传  但是response报错  我下载的是8.8.7木有问题   但是8.8.7版本结合修改main.js上传部分修改为自己的地址后天剑文件start按钮会一直灰色...

所以还是下载最新版比较好

PS帮助文档有点乱   先看这个 https://github.com/blueimp/jQuery-File-Upload/wiki/Setup

这里还有个https://github.com/blueimp/jQuery-File-Upload/wiki/Basic-plugin  用处不是很大  毕竟我现在只是拿来用  不分析

关于第一个连接  仔细阅读 custom server-side upload handler  这个部分

也就是要修改main.js 以及 页面中input的name值  这个input的name值要和struts中的匹配才行

另外注意一下server的返回值 custom server-side upload handler 中有说明 是一个JSON格式的值  按照它的格式来

 

不过我有点小疑问   观察官方下载的Demo  所谓的多文件上传实际上就是多次向后台发送请求而已  并不是同一个请求发送多个文件

所以服务端的返回json格式中files中总是只有一个文件....

 

main.js中地址部分改为自己的地址

$('#fileupload').fileupload({
disableImageResize: false,
// Uncomment the following to send cross-domain cookies:
//xhrFields: {withCredentials: true},
url: 'UploadAction_handle.action'
});

 

 上传处理Action

package action;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import utils.MyUploadPic;
import utils.MyUploadPicList;
import com.google.gson.Gson;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class UploadAction extends ActionSupport {
private static final long serialVersionUID = 572146812454l;
private static final int BUFFER_SIZE = 16 * 1024; // 这里的BUFFER_SIZE
// 表示一个数据缓冲区是16KB
// 所以写出的文件最小是16KB
private File[] myFile; // myFile就是用户准备上传的文件
private String[] myFileContentType;
private String[] myFileFileName; // 用户上传文件的真实文件名
// 当然了 这里的属性命名是任意的
// 但是要保证和页面元素中的 name属性的值要匹配
// 比如 页面中input 的name是myFile 我这里就应该有 setMyFile getMyFile
// 为了减少出错， 属性都用对应的名字好了
// 若文件对象的名字是xxx 文件类型就应是 xxxContentType 真实文件名则应是xxxFileName
// private String caption;
public File[] getMyFile() {
return myFile;
}
public void setMyFile(File[] myFile) {
this.myFile = myFile;
}
public String[] getMyFileContentType() {
return myFileContentType;
}
public void setMyFileContentType(String[] myFileContentType) {
this.myFileContentType = myFileContentType;
}
public String[] getMyFileFileName() {
return myFileFileName;
}
public void setMyFileFileName(String[] myFileFileName) {
this.myFileFileName = myFileFileName;
}
private String fileDir="D:/workspace/files/";
// 为了保证上传文件不会重名
// 文件名以当前毫秒数保存
private String saveFileName; // 以当前毫秒数为文件名
private static String getExtention(String fileName) {
int pos = fileName.lastIndexOf(".");
return fileName.substring(pos);
}
private String getFilenameWithoutExstension(String filename) {
int pos = filename.lastIndexOf(".");
if (pos >= 0 && pos < filename.length()) {
return filename.substring(0, pos);
} else {
return "";
}
}
//这是进入Action后首先执行的方法
//前台会发送两种请求 一种是
public String handle() throws Exception {
System.out.println("0000000 upload !!!");
HttpServletRequest request = ServletActionContext.getRequest();
System.out.println("000000
request"+request.getMethod());
HttpServletResponse response = ServletActionContext.getResponse();
//当request的类型是DELETE时
执行删除操作
if(request.getMethod().equals("DELETE")){
deleteFiles(request,response);
}else if(request.getMethod().equals("POST")){
upload(request,response);
}
return null;
}
public String upload(HttpServletRequest request ,HttpServletResponse response ){
MyUploadPicList files = new MyUploadPicList();
List<MyUploadPic> list = new ArrayList<MyUploadPic>();
for (int i = 0; i < myFile.length; i++) {
saveFileName = getFilenameWithoutExstension(myFileFileName[i])
+ new Date().getTime() + getExtention(myFileFileName[i]);
// writeFile 就是以当前毫秒数为文件名的文件
/*
* File writeFile = new
* File(ServletActionContext.getServletContext()
* .getRealPath("/files") + "/" + saveFileName);
*/
File writeFile = new File(fileDir + saveFileName);
System.out.println("000000000
tmp " + myFile[i]);
copy(myFile[i], writeFile);
MyUploadPic pic = new MyUploadPic();
try {
pic.setSize((int) getFileSizes(myFile[i]));
} catch (Exception e) {
// TODO Auto-generated catch block

e.printStackTrace();
}
pic.setName(saveFileName);
// pic.setThumbnailUrl("http://localhost/jQuery-File-Upload-8.8.7/server/php/files/thumbnail/jhhbimages.jpg");
pic.setDeleteUrl("UploadAction_handle.action?file="+saveFileName);
pic.setDeleteType("DELETE");
list.add(pic);
}
files.setFiles(list);
PrintWriter writer=null;
try {
writer = response.getWriter();
} catch (IOException e) {
// TODO Auto-generated catch block

e.printStackTrace();
}
String jsonStr = new Gson().toJson(files);
System.out.println(jsonStr);
writer.print(jsonStr);
writer.flush();
writer.close();
return null;
}
public void deleteFiles(HttpServletRequest request,HttpServletResponse response) {
ActionContext context = ActionContext.getContext();
Map params = context.getParameters();
String[] myParams = (String[]) params.get("file");
String delFileName=myParams[0];
System.out.println("00000000
del my file name"+delFileName);
File delFile=new File(fileDir+delFileName);
delFile.delete();
PrintWriter writer=null;
try {
writer = response.getWriter();
} catch (IOException e) {
// TODO Auto-generated catch block

e.printStackTrace();
}
//注意观察Official Demo 删除时返回的内容是 {"待删除文件的文件名":true}
//{"index.jpg":true}
//有了这个response 前台就知道已经删除 就会自动消除文件
String jsonStr="{""+delFileName+"":true"+"}";
System.out.println(jsonStr);
writer.print(jsonStr);
writer.flush();
writer.close();
}
private static void copy(File src, File dst) {
System.out.println("000000
src dst " + src.getPath() + "
"
+ dst.getPath());
try {
InputStream in = null;
OutputStream out = null;
try {
in = new BufferedInputStream(new FileInputStream(src),
BUFFER_SIZE);
out = new BufferedOutputStream(new FileOutputStream(dst),
BUFFER_SIZE);
// 上传的最小文件不能小于 1 KB 否则会出现找不到文件的错误
byte[] buffer = new byte[BUFFER_SIZE];
while (in.read(buffer) > 0) {
out.write(buffer);
}
} finally {
if (null != in) {
in.close();
}
if (null != out) {
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
/* 获取文件大小 */
public long getFileSizes(File f) throws Exception {// 取得文件大小
long s = 0;
if (f.exists()) {
FileInputStream fis = null;
fis = new FileInputStream(f);
s = fis.available();
} else {
f.createNewFile();
System.out.println("文件不存在");
}
return s;
}
}

 

页面

Basic页面

<%@page contentType="text/html; charset=GBK" language="java"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!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>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="js/vendor/jquery.ui.widget.js"></script>
<script src="js/jquery.iframe-transport.js"></script>
<script src="js/jquery.fileupload.js"></script>
</head>
<body>
<input id="fileupload" type="file" name="myFile" data-url="UploadAction_handle.action" multiple>
<div id="progress">
<div class="bar" style="width: 0%;"></div>
</div>
<div id="target">target</div>
<p></p><p></p><p></p><p></p><p></p>
<script>
$('#fileupload').fileupload({
dataType : 'json',
done : function(e, data) {
$.each(data.result.files, function(index, file) {
$('<p/>').text(file.name).appendTo(document.body);
});
}
});
$("#target").click(function() {
alert("Handler for .click() called.");
$('#fileupload').fileupload({
dataType : 'json',
done : function(e, data) {
$.each(data.result.files, function(index, file) {
$('<p/>').text(file.name).appendTo(document.body);
});
}
});
});
</script>
</body>
</html>

完整页面

<!DOCTYPE HTML>
<!--
/*
* jQuery File Upload Plugin Demo 9.0.1
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2010, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
-->
<html lang="en">
<head>
<!-- Force latest IE rendering engine or ChromeFrame if installed -->
<!--[if IE]>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<![endif]-->
<meta charset="utf-8">
<title>jQuery File Upload Demo</title>
<meta name="description" content="File Upload widget with multiple file selection, drag&amp;drop support, progress bars, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads.">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Bootstrap styles -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<!-- Generic page styles -->
<link rel="stylesheet" href="css/style.css">
<!-- blueimp Gallery styles -->
<link rel="stylesheet" href="http://blueimp.github.io/Gallery/css/blueimp-gallery.min.css">
<!-- CSS to style the file input field as button and adjust the Bootstrap progress bars -->
<link rel="stylesheet" href="css/jquery.fileupload.css">
<link rel="stylesheet" href="css/jquery.fileupload-ui.css">
<!-- CSS adjustments for browsers with JavaScript disabled -->
<noscript><link rel="stylesheet" href="css/jquery.fileupload-noscript.css"></noscript>
<noscript><link rel="stylesheet" href="css/jquery.fileupload-ui-noscript.css"></noscript>
</head>
<body>
<div class="navbar navbar-default navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-fixed-top .navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="https://github.com/blueimp/jQuery-File-Upload">jQuery File Upload</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="https://github.com/blueimp/jQuery-File-Upload/tags">Download</a></li>
<li><a href="https://github.com/blueimp/jQuery-File-Upload">Source Code</a></li>
<li><a href="https://github.com/blueimp/jQuery-File-Upload/wiki">Documentation</a></li>
<li><a href="https://blueimp.net">&copy; Sebastian Tschan</a></li>
</ul>
</div>
</div>
</div>
<div class="container">
<h1>jQuery File Upload Demo</h1>
<h2 class="lead">Basic Plus UI version</h2>
<ul class="nav nav-tabs">
<li><a href="basic.html">Basic</a></li>
<li><a href="basic-plus.html">Basic Plus</a></li>
<li class="active"><a href="index.html">Basic Plus UI</a></li>
<li><a href="angularjs.html">AngularJS</a></li>
<li><a href="jquery-ui.html">jQuery UI</a></li>
</ul>
<br>
<blockquote>
<p>File Upload widget with multiple file selection, drag&amp;drop support, progress bars, validation and preview images, audio and video for jQuery.<br>
Supports cross-domain, chunked and resumable file uploads and client-side image resizing.<br>
Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads.</p>
</blockquote>
<br>
<!-- The file upload form used as target for the file upload widget -->
<form id="fileupload" action="//jquery-file-upload.appspot.com/" method="POST" enctype="multipart/form-data">
<!-- Redirect browsers with JavaScript disabled to the origin page -->
<noscript><input type="hidden" name="redirect" value="http://blueimp.github.io/jQuery-File-Upload/"></noscript>
<!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->
<div class="row fileupload-buttonbar">
<div class="col-lg-7">
<!-- The fileinput-button span is used to style the file input field as button -->
<span class="btn btn-success fileinput-button">
<i class="glyphicon glyphicon-plus"></i>
<span>Add files...</span>
<input type="file" name="myFile" multiple>
</span>
<button type="submit" class="btn btn-primary start">
<i class="glyphicon glyphicon-upload"></i>
<span>Start upload</span>
</button>
<button type="reset" class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel upload</span>
</button>
<button type="button" class="btn btn-danger delete">
<i class="glyphicon glyphicon-trash"></i>
<span>Delete</span>
</button>
<input type="checkbox" class="toggle">
<!-- The global file processing state -->
<span class="fileupload-process"></span>
</div>
<!-- The global progress state -->
<div class="col-lg-5 fileupload-progress fade">
<!-- The global progress bar -->
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100">
<div class="progress-bar progress-bar-success" style="width:0%;"></div>
</div>
<!-- The extended global progress state -->
<div class="progress-extended">&nbsp;</div>
</div>
</div>
<!-- The table listing the files available for upload/download -->
<table role="presentation" class="table table-striped"><tbody class="files"></tbody></table>
</form>
<br>
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Demo Notes</h3>
</div>
<div class="panel-body">
<ul>
<li>The maximum file size for uploads in this demo is <strong>5 MB</strong> (default file size is unlimited).</li>
<li>Only image files (<strong>JPG, GIF, PNG</strong>) are allowed in this demo (by default there is no file type restriction).</li>
<li>Uploaded files will be deleted automatically after <strong>5 minutes</strong> (demo setting).</li>
<li>You can <strong>drag &amp; drop</strong> files from your desktop on this webpage (see <a href="https://github.com/blueimp/jQuery-File-Upload/wiki/Browser-support">Browser support</a>).</li>
<li>Please refer to the <a href="https://github.com/blueimp/jQuery-File-Upload">project website</a> and <a href="https://github.com/blueimp/jQuery-File-Upload/wiki">documentation</a> for more information.</li>
<li>Built with Twitter's <a href="http://twitter.github.com/bootstrap/">Bootstrap</a> CSS framework and Icons from <a href="http://glyphicons.com/">Glyphicons</a>.</li>
</ul>
</div>
</div>
</div>
<!-- The blueimp Gallery widget -->
<div id="blueimp-gallery" class="blueimp-gallery blueimp-gallery-controls" data-filter=":even">
<div class="slides"></div>
<h3 class="title"></h3>
<a class="prev">‹</a>
<a class="next">›</a>
<a class="close">×</a>
<a class="play-pause"></a>
<ol class="indicator"></ol>
</div>
<!-- The template to display files available for upload -->
<script id="template-upload" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-upload fade">
<td>
<span class="preview"></span>
</td>
<td>
<p class="name">{%=file.name%}</p>
<strong class="error text-danger"></strong>
</td>
<td>
<p class="size">Processing...</p>
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar progress-bar-success" style="width:0%;"></div></div>
</td>
<td>
{% if (!i && !o.options.autoUpload) { %}
<button class="btn btn-primary start" disabled>
<i class="glyphicon glyphicon-upload"></i>
<span>Start</span>
</button>

{% } %}
{% if (!i) { %}
<button class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel</span>
</button>

{% } %}
</td>
</tr>
{% } %}
</script>
<!-- The template to display files available for download -->
<script id="template-download" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-download fade">
<td>
<span class="preview">
{% if (file.thumbnailUrl) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>

{% } %}
</span>
</td>
<td>
<p class="name">
{% if (file.url) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" {%=file.thumbnailUrl?'data-gallery':''%}>{%=file.name%}</a>

{% } else { %}
<span>{%=file.name%}</span>

{% } %}
</p>

{% if (file.error) { %}
<div><span class="label label-danger">Error</span> {%=file.error%}</div>
{% } %}
</td>
<td>
<span class="size">{%=o.formatFileSize(file.size)%}</span>
</td>
<td>
{% if (file.deleteUrl) { %}
<button class="btn btn-danger delete" data-type="{%=file.deleteType%}" data-url="{%=file.deleteUrl%}"{% if (file.deleteWithCredentials) { %} data-xhr-fields='{"withCredentials":true}'{% } %}>
<i class="glyphicon glyphicon-trash"></i>
<span>Delete</span>
</button>
<input type="checkbox" name="delete" value="1" class="toggle">
{% } else { %}
<button class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel</span>
</button>

{% } %}
</td>
</tr>
{% } %}
</script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<!-- The jQuery UI widget factory, can be omitted if jQuery UI is already included -->
<script src="js/vendor/jquery.ui.widget.js"></script>
<!-- The Templates plugin is included to render the upload/download listings -->
<script src="http://blueimp.github.io/JavaScript-Templates/js/tmpl.min.js"></script>
<!-- The Load Image plugin is included for the preview images and image resizing functionality -->
<script src="http://blueimp.github.io/JavaScript-Load-Image/js/load-image.min.js"></script>
<!-- The Canvas to Blob plugin is included for image resizing functionality -->
<script src="http://blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script>
<!-- Bootstrap JS is not required, but included for the responsive demo navigation -->
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<!-- blueimp Gallery script -->
<script src="http://blueimp.github.io/Gallery/js/jquery.blueimp-gallery.min.js"></script>
<!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
<script src="js/jquery.iframe-transport.js"></script>
<!-- The basic File Upload plugin -->
<script src="js/jquery.fileupload.js"></script>
<!-- The File Upload processing plugin -->
<script src="js/jquery.fileupload-process.js"></script>
<!-- The File Upload image preview & resize plugin -->
<script src="js/jquery.fileupload-image.js"></script>
<!-- The File Upload audio preview plugin -->
<script src="js/jquery.fileupload-audio.js"></script>
<!-- The File Upload video preview plugin -->
<script src="js/jquery.fileupload-video.js"></script>
<!-- The File Upload validation plugin -->
<script src="js/jquery.fileupload-validate.js"></script>
<!-- The File Upload user interface plugin -->
<script src="js/jquery.fileupload-ui.js"></script>
<!-- The main application script -->
<script src="js/main.js"></script>
<!-- The XDomainRequest Transport is included for cross-domain file deletion for IE 8 and IE 9 -->
<!--[if (gte IE 8)&(lt IE 10)]>
<script src="js/cors/jquery.xdr-transport.js"></script>
<![endif]-->
</body>
</html>

 

另外两个utils中的类   

MyUploadPic是上传的每一张图片的信息  

MyUploadPicList 是上传的一系列图片信息   包括文件总大小等等

package utils;
public class MyUploadPic {
String name;
int size;
String url;
String thumbnailUrl;
String deleteUrl;
String
deleteType;
String error;
public MyUploadPic(){
}
public MyUploadPic(String name, int size, String url,
String thumbnailUrl, String deleteUrl, String deleteType,String error) {
super();
this.name = name;
this.size = size;
this.url = url;
this.thumbnailUrl = thumbnailUrl;
this.deleteUrl = deleteUrl;
this.deleteType = deleteType;
this.error=error;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getThumbnailUrl() {
return thumbnailUrl;
}
public void setThumbnailUrl(String thumbnailUrl) {
this.thumbnailUrl = thumbnailUrl;
}
public String getDeleteUrl() {
return deleteUrl;
}
public void setDeleteUrl(String deleteUrl) {
this.deleteUrl = deleteUrl;
}
public String getDeleteType() {
return deleteType;
}
public void setDeleteType(String deleteType) {
this.deleteType = deleteType;
}
public String getError() {
return error;
}
public void setError(String error) {
this.error = error;
}
}

 

package utils;
import java.util.List;
public class MyUploadPicList {
public MyUploadPicList(){
}
List<MyUploadPic> files;
public List<MyUploadPic> getFiles() {
return files;
}
public void setFiles(List<MyUploadPic> files) {
this.files = files;
}
}