代码中注入一个bean即可:
/** * 解决Jackson导致Long型数据精度丢失问题 * * @return */ @Bean("jackson2ObjectMapperBuilderCustomizer") public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() { Jackson2ObjectMapperBuilderCustomizer customizer = jacksonObjectMapperBuilder -> jacksonObjectMapperBuilder.serializerByType(Long.class, ToStringSerializer.instance) .serializerByType(Long.TYPE, ToStringSerializer.instance); return customizer; }