SpringBoot 序列化 Json 响应时根据字段名排序
为使前后端的处理逻辑一致，在返回值序列化时，统一根据字段名的循序排序。
示例代码
同时过滤了值为 null 的字段。
java
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.springframework.boot.autoconfigure.jackson.JacksonProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class JacksonConfig {
@Bean
JacksonProperties jacksonProperties() {
JacksonProperties properties = new JacksonProperties();
properties.setDefaultPropertyInclusion(JsonInclude.Include.NON_NULL);
properties.getMapper().put(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, true);
properties.getSerialization().put(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
return properties;
}
}