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&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">© 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&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"> </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 & 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; } }
