关于java下载文件设置对应的相应头

		if (null == queryEntity) {
			queryEntity = new ZpgwxxEntity();
		}
		// .创建文件名
		String fileName = "export.xls";
		// 返回文件相应头设置
		res.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + URLEncoder.encode(fileName, "UTF-8"));
		res.setHeader("Content-Type", "multipart/form-data");
		OutputStream os = res.getOutputStream();
		service.downloadZpgwxxList(queryEntity).write(os);
		os.flush();
		os.close();
	}