JSP实现从不同服务器上下载文件的方法

public void importSuccess() throws Exception { 
  try { 
   HttpServletResponse response = Struts2Utils.getResponse(); 
   // 重置响应 
   response.reset(); 
   // 设置响应头为二进制流 
   response.setContentType("application/x-msdownload;charset=utf-8"); 
   response.setContentType("APPLICATION/OCTET-STREAM "); 
   response.setContentType("application/vnd.ms-excel"); 
   response.setHeader("Content-Disposition", 
     "attachment; filename=ComplaintsImportModel.xls"); 
   String path = this.getClass().getClassLoader().getResource("/")//这里才是问题的关键，WebLogic服务器要在读取添加一个"/" 
     .getPath(); 
   path = path.substring(1, path.length()); 
   String name = File.separator + path + "ComplaintsImportModel.xls"; 
   logger.info("**********************************" + name 
     + "*******************************"); 
   InputStream is = new FileInputStream(name); 
   HSSFWorkbook wb = new HSSFWorkbook(is); 
   // 得到 文件流 
   OutputStream out = response.getOutputStream(); 
   wb.write(out); 
   is.close(); 
   out.flush(); 
   out.close(); 
  } catch (Exception e) { 
   logger.error("下载导出模版失败", e); 
  } 
}