@Configurationpublic class JacksonConfig {@Bean@Primary@ConditionalOnMissingBean(ObjectMapper.class)public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder){ObjectMapper objectMapper = builder.createXmlMapper(false).build();// 全局配置序列化返回 JSON 处理SimpleModule simpleModule = new SimpleModule();//JSON Long ==> StringsimpleModule.addSerializer(Long.class, ToStringSerializer.instance);objectMapper.registerModule(simpleModule);return objectMapper;}}
后端Long类型精度是20位,前端number精度是16位,而雪花算法生成的是19位
