@Override
	public List<ParamFlowRule> convert(String s) {
		try {
			return objectMapper.readValue(s, new TypeReference<List<ParamFlowRule>>() {
			});
		}
		catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sentinel/src/test/java/com/alibaba/cloud/sentinel/TestConverter.java