Jackson序列化：如何忽略超类属性

您可以注册一个自定义的Jackson注释Intropector，它将忽略来自某种超级类型的所有属性。这是一个例子：

public class JacksonIgnoreInherited {    public static class base {        public final String field1;        public base(final String field1) { this.field1 = field1;        }    }    public static class Bean extends base {        public final String field2;        public Bean(final String field1, final String field2) { super(field1); this.field2 = field2;        }    }    private static class IgnoreInheritedIntrospector extends JacksonAnnotationIntrospector {        @Override        public boolean hasIgnoreMarker(final AnnotatedMember m) { return m.getDeclaringClass() == base.class || super.hasIgnoreMarker(m);        }    }    public static void main(String[] args) throws JsonProcessingException {        final ObjectMapper mapper = new ObjectMapper();        mapper.setAnnotationIntrospector(new IgnoreInheritedIntrospector());        final Bean bean = new Bean("a", "b");        System.out.println(mapper  .writerWithDefaultPrettyPrinter()  .writevalueAsString(bean));    }}

输出：

{“ field2”：“ b”}