经过ObjectMapper将实体转成字符串 ,将 用json存的的list 回转list

InvokingSecurityInfo invokingSecurityInfo;
ObjectMapper objectMapper = new ObjectMapper();
List<String> userAccountList=new ArrayList<>();

//将实体类存成字符串
invokingSecurityInfo = invokingSecurityUtil.invokingSecurityInfoRepository.getFirstByAvaiStatus(1);
String a=new ObjectMapper().writeValueAsString(invokingSecurityInfo)

//将实体类存成字符串
JavaType javaType =objectMapper.getTypeFactory().constructParametricType(ArrayList.class, String.class);
userAccountList = objectMapper.readValue(invokingSecurityUtil.redisService.get(INVOKING_USER_ACCOUNT).toString(), javaType);