public static byte[] loadPdfCache(String absolutePath) throws Exception {
		byte[] cache = null;
		// 1、参数检查
		if (absolutePath == null || "".equals(absolutePath.trim())) {
			throw new Exception("非法参数异常，请检查并确保入口参数不能为空或null！");
		}
		// 2、业务逻辑处理
		File file = new File(absolutePath);
		if (file.exists()) {
			InputStream is = null;
			try {
				is = new FileInputStream(file);
				cache = new byte[is.available()];
				is.read(cache);
			} finally {
				if (is != null) {
					is.close();
				}
			}
		} else {
			throw new Exception("非法PDF文档路径，模板信息不存在，请检查并确保以下路径信息正确！\n" + absolutePath);
		}
		return cache;
	}