code: private static void initRootCert() {
  		LogUtil.writeLog("加载根证书==>"+SDKConfig.getConfig().getRootCertPath());
  		if (!isEmpty(SDKConfig.getConfig().getRootCertPath())) {
  			rootCert = initCert(SDKConfig.getConfig().getRootCertPath());
  			LogUtil.writeLog("Load RootCert Successful");
  		} else {
  			LogUtil.writeLog("WARN: acpsdk.rootCert.path is empty");
  		}
  	}
docs: 用配置文件acp_sdk.properties配置路径 加载敏感信息加密证书