Spring Boot Long 类型返回前端多了两个零

现象

Spring Boot接口中返回的字段中包含了Long类型，但前端收到的Long字段返回值多了两个0。

解决

给ObjectMapper添加Long类型序列化处理器。

@Configuration
public class ObjectMapperConfig {


    @Bean
    public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
        ObjectMapper objectMapper = builder.createXmlMapper(false).build();
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);
        return objectMapper;
    }

}