strut2上传文件，带进度条

package com.dfh.action; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Date; import java.util.List; import org.apache.struts2.ServletActionContext; import com.davidjc.ajaxfileupload.multipart.ProgressMonitor; import com.dfh.action.base.BaseAction; import com.opensymphony.xwork2.ActionContext; public class FilesUploadAction extends BaseAction { private static final long serialVersionUID = 572146812454l ; private static final int BUFFER_SIZE = 16 * 1024 ; // private List<File> myFiles; // private List<String> contentTypes; // private List<String> fileNames; // private List<String> imageFileName; private File[] myFile; private String[] myFileFileName; private String[] contentType; private static void copy(File src, File dst) { try { InputStream in = null ; OutputStream out = null ; try { in = new BufferedInputStream( new FileInputStream(src), BUFFER_SIZE); out = new BufferedOutputStream( new FileOutputStream(dst), BUFFER_SIZE); 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(); } } // private static List<String> getExtention(List<String> fileName) { // List<String> fileNs = new ArrayList<String>(); // for(String fileN : fileName){ // System.out.println(fileN); // int pos = fileName.lastIndexOf("."); // System.out.println(fileN.substring(pos)); // fileNs.add(new Date().getTime() + fileN.substring(pos)); // } // return fileNs; // } /** * 上传文件 * @return */ public String filesUpload() { sessionMap.remove("com.davidjc.ajaxfileupload.multipart.ProgressMonitor"); System.out.println("**********" + myFile.length); System.out.println("**********" + myFileFileName.length); if(myFileFileName.length < 0){ return "fail"; } // imageFileName = getExtention(fileNames); for(int j=0;j<myFileFileName.length;j++ ){ File imageFile = new File(ServletActionContext.getServletContext().getRealPath(myFileFileName[j])); System.out.println(myFileFileName[j]); try{ copy(myFile[j], imageFile); System.out.println("{success:true,msg:'上传文件成功!'}"); response.getWriter().flush(); }catch (Exception ex){ return "fail"; } } return NONE; } /** * 上传进程控制 * @return * @throws Exception */ public String processControllers() throws Exception{ double d = 0.00; //从session取出uploadPercentage // Object mon_obj = this.sessionMap.get("com.davidjc.ajaxfileupload.multipart.ProgressMonitor"); Object mon_obj = ActionContext.getContext().getSession().get("com.davidjc.ajaxfileupload.multipart.ProgressMonitor"); System.out.println(mon_obj instanceof ProgressMonitor); if (mon_obj != null) { ProgressMonitor monitor = (ProgressMonitor)mon_obj; d = ((double)monitor.getBytesRead()/(double)monitor.getBytesLength()); System.out.println("mon_obj is not null........"); } System.out.println("****** "+Math.round(d * 100)+" ********"); if(d<1){ //d<0 response.getWriter().write(Math.round(d * 100) +""); } else if(d>=1){ this.sessionMap.remove("com.davidjc.ajaxfileupload.multipart.ProgressMonitor"); response.getWriter().write("100"); } response.getWriter().flush(); return NONE; } public File[] getMyFile() { return myFile; } public void setMyFile(File[] myFile) { this.myFile = myFile; } public String[] getMyFileFileName() { return myFileFileName; } public void setMyFileFileName(String[] myFileFileName) { this.myFileFileName = myFileFileName; } public String[] getContentType() { return contentType; } public void setContentType(String[] contentType) { this.contentType = contentType; } // public List<String> getMyfileFileName(){ // return fileNames; // } // // public void setMyfileFileName(List<String> fileNames){ // this.fileNames = fileNames; // } // // public List<File> getMyFile() { // return myFiles; // } // // public void setMyFile(List<File> myFiles) { // this.myFiles = myFiles; // } // // public List<String> getContentType() { // return contentTypes; // } // // // public List<String> getImageFileName() { // return imageFileName; // } // // // public void setContentType(List<String> contentTypes) { // this.contentTypes = contentTypes; // } // // // public void setImageFileName(List<String> imageFileName) { // this.imageFileName = imageFileName; // } }