ajaxFileUpload+struts2实现多文件上传(动态添加文件上传框)

package com.itmyhome; 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 javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; public class FileAction { private File[] file; //文件 private String[] fileFileName; //文件名 private String[] filePath; //文件路径 private String downloadFilePath; //文件下载路径 private InputStream inputStream; /** * 文件上传 * @return */ public String fileUpload() { String path = ServletActionContext.getServletContext().getRealPath("/upload"); File file = new File(path); // 判断文件夹是否存在,如果不存在则创建文件夹 if (!file.exists()) { file.mkdir(); } try { if (this.file != null) { File f[] = this.getFile(); filePath = new String[f.length]; for (int i = 0; i < f.length; i++) { String fileName = java.util.UUID.randomUUID().toString(); // 采用时间+UUID的方式随即命名 String name = fileName+ fileFileName[i].substring(fileFileName[i].lastIndexOf(".")); // 保存在硬盘中的文件名 FileInputStream inputStream = new FileInputStream(f[i]); FileOutputStream outputStream = new FileOutputStream(path + "\\" + name); byte[] buf = new byte[1024]; int length = 0; while ((length = inputStream.read(buf)) != -1) { outputStream.write(buf, 0, length); } inputStream.close(); outputStream.flush(); // 文件保存的完整路径 // 比如：D:\tomcat6\webapps\struts_ajaxfileupload\\upload\a0be14a1-f99e-4239-b54c-b37c3083134a.png filePath[i] = path + "\\" + name; } } } catch (Exception e) { e.printStackTrace(); } return "success"; } /** * 附件下载 * @return */ public String downloadFile(){ String path = downloadFilePath; HttpServletResponse response = ServletActionContext.getResponse(); try { // path是指欲下载的文件的路径。 File file = new File(path); // 取得文件名。 String filename = file.getName(); // 取得文件的后缀名。 String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase(); // 以流的形式下载文件。 InputStream fis = new BufferedInputStream(new FileInputStream(path)); byte[] buffer = new byte[fis.available()]; fis.read(buffer); fis.close(); //清空response response.reset(); //设置response的Header String filenameString = new String(filename.getBytes("gbk"),"iso-8859-1"); response.addHeader("Content-Disposition", "attachment;filename=" + filenameString); response.addHeader("Content-Length", "" + file.length()); OutputStream toClient = new BufferedOutputStream(response.getOutputStream()); response.setContentType("application/octet-stream"); toClient.write(buffer); toClient.flush(); toClient.close(); } catch (IOException ex) { ex.printStackTrace(); } return null; } /** * @return the file */ public File[] getFile() { return file; } /** * @param file the file to set */ public void setFile(File[] file) { this.file = file; } /** * @return the fileFileName */ public String[] getFileFileName() { return fileFileName; } /** * @param fileFileName the fileFileName to set */ public void setFileFileName(String[] fileFileName) { this.fileFileName = fileFileName; } /** * @return the filePath */ public String[] getFilePath() { return filePath; } /** * @param filePath the filePath to set */ public void setFilePath(String[] filePath) { this.filePath = filePath; } /** * @return the inputStream */ public InputStream getInputStream() { return inputStream; } /** * @param inputStream the inputStream to set */ public void setInputStream(InputStream inputStream) { this.inputStream = inputStream; } /** * @return the downloadFilePath */ public String getDownloadFilePath() { return downloadFilePath; } /** * @param downloadFilePath the downloadFilePath to set */ public void setDownloadFilePath(String downloadFilePath) { this.downloadFilePath = downloadFilePath; } }