SpringBoot 统一处理返回前端格式配置

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已于 2022-07-26 16:07:32 修改

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分类专栏： SpringBoot 文章标签： java 开发语言

于 2022-07-14 09:55:36 首次发布

本文链接：https://blog.youkuaiyun.com/qq_44443020/article/details/125778047

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该博客展示了如何在Spring Boot中配置Jackson，包括使用MappingJackson2HttpMessageConverter，添加自定义序列化器以处理Long类型和日期类型，如Date、LocalDateTime和LocalDate。通过设置ObjectMapper，确保了非空字段的序列化，并定制了日期格式。

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@Configuration
public class JacksonConfig {

@Bean
public MappingJackson2HttpMessageConverter converter() {
    MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
    ObjectMapper objectMapper = new ObjectMapper();
    SimpleModule simpleModule = new SimpleModule();
    simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
    simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);

    JavaTimeModule timeModule = new JavaTimeModule();
    timeModule.addSerializer(Date.class, new DateSerializer(false, new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")));
    timeModule.addDeserializer(Date.class, new DateDeserializers.DateDeserializer());
    timeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
    timeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
    timeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
    timeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
    timeModule.addSerializer(LocalDateTime.class,
            new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
    timeModule.addSerializer(LocalDate.class,
            new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
    timeModule.addSerializer(LocalTime.class,
            new LocalTimeSerializer(DateTimeFormatter.ofPattern("HH:mm")));
    objectMapper.registerModule(timeModule);
    objectMapper.setSerializationInclusion(JsonInclude.Include. NON_NULL);// 不序列化为null
    messageConverter.setObjectMapper(objectMapper);
    return messageConverter;
}

}