上传头像到服务器

    if(photo!=null){
                  String realpath = ServletActionContext.getServletContext().getRealPath("/factory/photo") ;//获取服务器路径
                  String targetFileName =StringUtil.getUuid()+"."+photoFileName.substring(photoFileName.lastIndexOf(".")+1);
                  target = new File(realpath, targetFileName);
                  FileUtils.copyFile(photo, target);
                  drug.setHeaderImg("factory/photo/"+targetFileName);
                }