如何在自定义序列化程序中访问默认的杰克逊序列化

A

BeanSerializerModifier

将默认的序列化程序注入到自定义序列化程序中

public class MyClassSerializer extends JsonSerializer<MyClass> {    private final JsonSerializer<Object> defaultSerializer;    public MyClassSerializer(JsonSerializer<Object> defaultSerializer) {        this.defaultSerializer = checkNotNull(defaultSerializer);    }    @Override    public void serialize(MyClass myclass, JsonGenerator gen, SerializerProvider provider) throws IOException {        if (myclass.getSomeProperty() == true) { provider.setAttribute("special", true);        }        defaultSerializer.serialize(myclass, gen, provider);    }}

创建

BeanSerializerModifier

于

MyClass

public class MyClassSerializerModifier extends BeanSerializerModifier {    @Override    public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {        if (beanDesc.getBeanClass() == MySpecificClass.class) { return new MyClassSerializer((JsonSerializer<Object>) serializer);        }        return serializer;    }}

注册序列化修饰符

ObjectMapper om = new ObjectMapper()        .registerModule(new SimpleModule()     .setSerializerModifier(new MyClassSerializerModifier()));