plupload2.1.2文件合并
1.前端
（1）依赖文件：
<link type="text/css" rel="stylesheet" href="~/Content/plupload_2_1_2/jquery-ui.min.css" media="screen" /> <link type="text/css" rel="stylesheet" href="~/Content/plupload_2_1_2/jquery.ui.plupload/css/jquery.ui.plupload.css" media="screen" /> <script type="text/javascript" src="~/Content/plupload_2_1_2/jquery.js" charset="UTF-8"></script> <script type="text/javascript" src="~/Content/plupload_2_1_2/jquery-ui.min.js" charset="UTF-8"></script> <script type="text/javascript" src="~/Content/plupload_2_1_2/plupload.full.min.js" charset="UTF-8"></script> <script type="text/javascript" src="~/Content/plupload_2_1_2/jquery.ui.plupload/jquery.ui.plupload.min.js" ></script> <script type="text/javascript" src="~/Content/plupload_2_1_2/zh_CN.js" charset="UTF-8"></script>
（2）HTML
<form id="uploader"> <input type="text" name="filename" value="" /> </form>
（3）js
<script type="text/javascript"> //文件名不能相同 $(function () { $("#uploader").plupload({ // General settings runtimes: 'gears,flash,silverlight,browserplus,html5', url: '/upload/plupload', max_file_size: '6079mb', max_file_count: 20, chunk_size: '2048kb', unique_names: false, init: { // Resize images on clientside if we can //resize: { width: 320, height: 240, quality: 90 }, rename: false, // 是否重命名文件 sortable: true, // Sort files dragdrop: true, //启用文件到小部件能够拖放(操作)(目前唯一HTML5支持) filters: [ { title: "Image files", extensions: "jpg,gif,png,txt,sql" }, { title: "music", extensions: "avi,mp4,mp3,exe,zip" } ], views: { list: true, thumbs: true, // Show thumbs active: 'thumbs' }, // Flash settings flash_xap_url: '~/Content/upload/js/Moxie.xap', // Silverlight settings silverlight_xap_url: '~/Content/upload/js/Moxie.xap', BeforeUpload: function (uploader, file) { //alert(123) //var $li = $('#uploader_filelist li').hasClass('plupload_file')[0] //var value = $($li).find('div.plupload_file_name').attr('title') //alert($li) }, QueueChanged: function () { var $li = $('#uploader_filelist li') console.log($li) }, FileUploaded: function (uploader, file, responseObject) { //console.log(responseObject) //alert(curDirID) //initData(responseObject.response.curDirId) $.ajax({ url: '/Cloudpan/GetCurdir', type: 'post', success: function (id) { initData(id) } }) } } }); }); </script>
2.后台
后台可以使用FileInputStream的构造方法追加文件内容。plupload使用“multipart/form-data”这种表单上传文件，其中每一个分块会发出一次请求，表单中有两个字段，分别是“chunk”和“chunks”，其中“chunk”是当前正在处理的文件分块的序号（从0开始计数），而“chunks”则是文件的分块总数。
（1）.net
asp.net MVC【有bug】
/// <summary> /// 文件上传 /// </summary> /// <returns></returns> public JsonResult plupload(string name) { string msg = string.Empty; string strchunk = Request["chunk"]; string strchunks = Request["chunks"]; int chunk = 0; int chunks = 0; int.TryParse(strchunk, out chunk); int.TryParse(strchunks, out chunks); foreach (string upload in Request.Files) { if (upload != null && upload.Trim() != "") { string path = AppDomain.CurrentDomain.BaseDirectory + "Temp\\"; if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } System.Web.HttpPostedFileBase postedFile = Request.Files[upload]; string filename1 = Path.GetFileName(postedFile.FileName); string filename = name; string newFileName = filename; if (chunks>1) { newFileName = chunk + "_" + filename; } string fileNamePath = path + newFileName; postedFile.SaveAs(fileNamePath); if (chunks>1 && chunk + 1 == chunks) { using (FileStream fsw = new FileStream(path + filename, FileMode.Create, FileAccess.Write)) { BinaryWriter bw = new BinaryWriter(fsw); // 遍历文件合并 for (int i = 0; i < chunks; i++) { bw.Write(System.IO.File.ReadAllBytes(path + i.ToString() + "_" + filename)); bw.Flush(); } } } } } return Json(new { jsonrpc = "2.0", result = "", id = "id" }); }
（2）servlet
config.properties:
uploadPath=/upload/images
package cn.getword.servlet; import com.alibaba.fastjson.JSON; 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; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; 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 java.io.*; import java.util.*; @WebServlet(name = "FileUploadServlet", urlPatterns = {"/upload/plupload.do"}) public class FileUploadServlet extends HttpServlet { String uploadPath; private static final ResourceBundle bundle = ResourceBundle.getBundle( "config" ); protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setCharacterEncoding( "UTF-8" ); Integer chunk = null; /* 分割块数 */ Integer chunks = null; /* 总分割数 */ String tempFileName = null; /* 临时文件名 */ String newFileName = null; /* 最后合并后的新文件名 */ BufferedOutputStream outputStream = null; /* System.out.println(FileUtils.getTempDirectoryPath()); */ uploadPath = request.getServletContext().getRealPath( bundle.getString( "uploadPath" ) ); File up = new File( uploadPath ); if ( !up.exists() ) { up.mkdir(); } if ( ServletFileUpload.isMultipartContent( request ) ) { try { DiskFileItemFactory factory = new DiskFileItemFactory(); factory.setSizeThreshold( 1024 ); /* factory.setRepository(new File(repositoryPath));// 设置临时目录 */ ServletFileUpload upload = new ServletFileUpload( factory ); upload.setHeaderEncoding( "UTF-8" ); /* upload.setSizeMax(5 * 1024 * 1024);// 设置附件最大大小，超过这个大小上传会不成功 */ List<FileItem> items = upload.parseRequest( request ); for ( FileItem item : items ){ if ( item.isFormField() ) /* 是文本域 */ { if ( item.getFieldName().equals( "name" ) ) { tempFileName = item.getString(); /* System.out.println("临时文件名：" + tempFileName); */ } else if ( item.getFieldName().equals( "chunk" ) ) { chunk = Integer.parseInt( item.getString() ); /* System.out.println("当前文件块：" + (chunk + 1)); */ } else if ( item.getFieldName().equals( "chunks" ) ) { chunks = Integer.parseInt( item.getString() ); /* System.out.println("文件总分块：" + chunks); */ } } else { /* 如果是文件类型 */ if ( tempFileName != null ) { String chunkName = tempFileName; if ( chunk != null ) { chunkName = chunk + "_" + tempFileName; } File savedFile = new File( uploadPath, chunkName ); item.write( savedFile ); } } } // UUID+'.'+后缀名 newFileName = UUID.randomUUID().toString().replace( "-", "" ) .concat( "." ) .concat( FilenameUtils.getExtension( tempFileName ) ); if ( chunk != null && chunk + 1 == chunks ) { outputStream = new BufferedOutputStream( new FileOutputStream( new File( uploadPath, newFileName ) ) ); /* 遍历文件合并 */ for ( int i = 0; i < chunks; i++ ) { File tempFile = new File( uploadPath, i + "_" + tempFileName ); byte[] bytes = FileUtils.readFileToByteArray( tempFile ); outputStream.write( bytes ); outputStream.flush(); tempFile.delete(); } outputStream.flush(); } Map<String, Object> m = new HashMap<String, Object>(); m.put( "status", true ); m.put( "fileUrl", bundle.getString( "uploadPath" ) + "/" + newFileName ); response.getWriter().write( JSON.toJSONString( m ) ); } catch ( FileUploadException e ) { e.printStackTrace(); Map<String, Object> m = new HashMap<String, Object>(); m.put( "status", false ); response.getWriter().write( JSON.toJSONString( m ) ); } catch ( Exception e ) { e.printStackTrace(); Map<String, Object> m = new HashMap<String, Object>(); m.put( "status", false ); response.getWriter().write( JSON.toJSONString( m ) ); } finally { try { if ( outputStream != null ) outputStream.close(); } catch ( IOException e ) { e.printStackTrace(); } } } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.getRequestDispatcher("/WEB-INF/views/student/uploadFile.jsp").forward(request, response); } }
注意：
> request.getServletContext().getRealPath(virtualPath); 将虚拟路径转化成物理路径。
> ResourceBundle bundle = ResourceBundle.getBundle( "config" );
读取src下的config.properties文件。例如：file.config对应的文件为file包下config.properties文件
