使用ExtJs的插件UploadDialog+struts2.0实现多文件上传
前一段时间项目需求要实现一个多文件上传的问题，项目框架为SSH，使用的是ExtJs的一个不是很成熟的插件UloadDialog上查了好多资料，发现好多都是copy有粘贴的内容，都很雷同，其中的一些问题还是要自己才找到答案，现在功能基本实现了，把我的代码贴出来供大家学习使用：
另外：咨询一个问题：使用UploadDialog能否实现一个选多个文件的？如果有哪位朋友实现了，帮忙贴出来供大家学习呀。
1.前台代码
在前台的html代码中只需要引入UploadDialog的包，在引入含下面代码的JS就可以使用了，很简单。
<!--当然，这里的路径要根据你自己放置的UploadDialog.js的路径来确定--><script type="text/javascript" src="${webRoot}/scriptLib/ext-3.2.1/Ext.ux.UploadDialog/UploadDialog/UploadDialog.js"></script><link rel="stylesheet" type="text/css" href="${webRoot}/ext-3.2.1/Ext.ux.UploadDialog/css/Ext.ux.UploadDialog.css"/>function btn_show(){var subject = Ext.getCmp('subjectId').getValue();var role = Ext.getCmp('roleId').getValue();var publicSound = Ext.getCmp('publicSoundId').getValue();if(subject==""||role==""){Ext.MessageBox.alert('提示信息', '请先选择音频科目和角色');}else{var dialog = new Ext.ux.UploadDialog.Dialog({ autoCreate: true,minWidth: 450,minHeight: 300,fileSize: 10*1024*1024, title: '文件上传',//是否自动上传permitted_extensions: ['MP3','mp3','MP4','mp4','WMA','wma'],//允许上传的文件的类型，区分大小写closable: true, collapsible: false, draggable: true, proxyDrag: true, resizable: true, constraintoviewport: true, modal: true,reset_on_hide: false,allow_close_on_upload: true,url: 'uploadAudioHandelAction.action',base_params:{subjectID: subject,roleID: role,publicSound: publicSound,userName: userName}});dialog.show('show-button'); dialog.on('uploadsuccess',onUploadSuccess);//定义上传前的回调函数dialog.on('uploaderror',onUploadFailed); //定义上传出错回调函数dialog.on('fileadd',onFileAdd);//定义添加文件时验证文件的函数dialog.on('uploadcomplete',onUploadComplete);//定义所有文件上传完成回调函数}};package com.dfsoft.lion.process.demo.control.model.dismodel.audio;import java.io.File;import java.util.Date;import com.dfsoft.lion.commons.EagleBaseAction;import com.dfsoft.lion.domain.demo.measurement.entity.Audio;import com.dfsoft.lion.domain.demo.measurement.entity.AudioSubjectInfo;import com.dfsoft.lion.domain.demo.measurement.entity.Role;import com.dfsoft.lion.domain.demo.measurement.entity.Users;import com.dfsoft.lion.process.demo.process.model.dismodel.AudioProcess;import com.dfsoft.lion.process.demo.process.model.dismodel.AudioSubjectInfoProcess;import com.dfsoft.lion.process.demo.process.model.dismodel.RoleProcess;import com.dfsoft.lion.process.demo.process.model.dismodel.UsersProcess;import org.apache.commons.io.FileUtils; import javax.servlet.http.HttpServletResponse;import org.apache.struts2.ServletActionContext;/** * @描述：上传音频处理Action * @author lichenglin * */public class UploadAudioHandelAction extends EagleBaseAction {/** * */private static final long serialVersionUID = 7716496253903888292L;private Long subjectID ;//科目IDprivate Long roleID ;// 角色IDprivate int publicSound;private String userName ;private String filesPath;//接收文件信息private File[] files; private String[] filesFileName;private String[] filesContentType;transient private AudioProcess audioProcess;transient private RoleProcess roleProcess;transient private AudioSubjectInfoProcess audioSubjectInfoProcess;transient private UsersProcess usersProcess;transient private GetPath getPath;public String execute() throws Exception{Audio audio = new Audio() ;Users users = this.usersProcess.getUserByName("userName", userName);AudioSubjectInfo audioSubjectInfo = new AudioSubjectInfo();HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=GBK"); response.setCharacterEncoding("GBK");Role role = this.roleProcess.getRole(roleID);/*文件存放路径：为根路径+角色名*/String path = getPath.getFilesPath()+"/"+role.getRoleName();String filePath = null ; //写入数据库的文件的路径double audioSize = 0; //文件大小for(int i = 0 ; i < files.length ; i++){ File io = new File(path,filesFileName[i]); try{ /*对文件进行处理*/ audioSize = (files[i].length())/1024;//将文件大小从字节数（byte）转化成（KB）为单位 filePath = path+"/"+filesFileName[i]; /*音频属性*/ audio.setAudioName(filesFileName[i]); audio.setAudioSize(audioSize); audio.setDownloads(0);//初始化下载次数为0 audio.setFilePath(filePath); if(publicSound==2){ audio.setIsPublicSound(false);//2表示“否”// System.err.println("否"); }else if(publicSound==1){ audio.setIsPublicSound(true);//1表示“是”// System.err.println("是"); } audio.setRoleID(roleID);//音频上传人 audio.setUploadDate(new Date());//音频上传时间为当前时间 audio.setUserID(users.getUserID()); /*判断当前音频是否已存在*/ Audio temp_audio = this.audioProcess.getAudioByName("audioName",filesFileName[i]); if(temp_audio==null){ //所上传的音频尚不存在 /*上传音频到服务器*/ FileUtils.copyFile(files[i],io); this.audioProcess.addAudio(audio,subjectID); response.getWriter().write("{success:true,message:'上传新文件成功'}"); }else if(temp_audio!=null){ audioSubjectInfo.setAudioID(temp_audio.getAudioID()); audioSubjectInfo.setSubjectID(subjectID); AudioSubjectInfo temp_auAudioSubjectInfo = this.audioSubjectInfoProcess.getAudioSubjectInfo(audioSubjectInfo); if(temp_auAudioSubjectInfo==null){ /*该音频已经上传，但未关联该科目,则直接向关系表中添加一条关系数据*/ this.audioSubjectInfoProcess.addAudioSubjectInfo(audioSubjectInfo); response.getWriter().write("{success:true,message:'上传文件成功'}"); } else{ /*同音频同科目已经被上传，则不再上传，直接返回false*/ response.getWriter().write("{success:true,message:'该文件已经被上传'}"); } } }catch (Exception e) { response.getWriter().write("{success:false,message:'上传文件失败'}"); e.printStackTrace(); } } return NONE;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public void setUsersProcess(UsersProcess usersProcess) {this.usersProcess = usersProcess;}public void setAudioSubjectInfoProcess(AudioSubjectInfoProcess audioSubjectInfoProcess) {this.audioSubjectInfoProcess = audioSubjectInfoProcess;}public void setRoleProcess(RoleProcess roleProcess) {this.roleProcess = roleProcess;}public Long getSubjectID() {return subjectID;}public void setSubjectID(Long subjectID) {this.subjectID = subjectID;}public Long getRoleID() {return roleID;}public void setRoleID(Long roleID) {this.roleID = roleID;}public int getPublicSound() {return publicSound;}public void setPublicSound(int publicSound) {this.publicSound = publicSound;}public static long getSerialversionuid() {return serialVersionUID;}public void setAudioProcess(AudioProcess audioProcess) {this.audioProcess = audioProcess;}public File[] getFiles() {return files;}public String[] getFileFilesName() {return filesFileName;}public String[] getFilesContentType() {return filesContentType;}public void setFiles(File[] files) {this.files = files;}public void setFilesFileName(String[] filesFileName) {this.filesFileName = filesFileName;}public void setFilesContentType(String[] filesContentType) {this.filesContentType = filesContentType;}public String getFilesPath() {return filesPath;}public void setFilesPath(String filesPath) {this.filesPath = filesPath;}public void setGetPath(GetPath getPath) {this.getPath = getPath;}}