Struts1.1实现文件上传
public ActionForward fileUpload(ActionMapping mapping,ActionForm form, HttpServletRequest request,HttpServletResponse response) throws Exception { PictureForm pictureForm = (PictureForm) form; FormFile file = pictureForm.getFile(); File dir = new File("d:/upload"); // 构建上传目录 if (!dir.exists()) { dir.mkdirs(); } if (file.getFileSize() > 0) { // 判断是否有文件上传 FileOutputStream out = null; try { byte[] b = file.getFileData(); // 取得文件数据 String fileName = String.valueOf(Calendar.getInstance().getTimeInMillis()); String extName = file.getFileName().substring(file.getFileName().lastIndexOf(".")); // 得到上传文件的扩展名 File outfile = new File(dir + File.separator + fileName + extName); out = new FileOutputStream(outfile, false); out.write(b); // 通过流将数据写入文件 } catch (Exception e) { e.printStackTrace(); } finally { if (out != null) { try { out.close(); // 关闭文件输出流 } catch (IOException e) { e.printStackTrace(); } } } } return new ActionForward("success");}注：jsp页面要使用struts标签，格式如下：<html:form action="" method="post" enctype="multipart/form-data"> <html:file property=""/></html:form>另外在ActionForm中定义一个FormFile属性，对应jsp页面中的<html:file />