java - 是否可以在 spring 中默认为类型使用自定义序列化器/反序列化器？

Question

我有一个来自第三方库的类型(JSONB 来自 jooq)，我为它编写了一个自定义序列化器/反序列化器:

@JsonComponent
public class JSONBSerializer extends JsonSerializer<JSONB> {
    @Override
    public void serialize(JSONB jsonb, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        jsonGenerator.writeString(jsonb.toString());
    }
}

@JsonComponent
public class JSONBDeserializer extends JsonDeserializer<JSONB> {
    @Override
    public JSONB deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
        return JSONB.valueOf(jsonParser.getValueAsString());
    }
}

我想知道是否有办法告诉 spring 或 jackson 默认使用这些，而不必用 @JsonSerialize(using = JSONBSerializer.class) 注释项目中的每个 JSONB 字段和 @JsonDeserialize(using = JSONBDeserializer.class) ？

Answer 1

您需要创建新的 com.fasterxml.jackson.databind.module.SimpleModule 实例并注册所有自定义序列化器和反序列化器。接下来，您需要检查如何在您的 Spring Boot 版本中注册新的自定义模块。

@Bean
public SimpleModule jooqModule() {
    SimpleModule jooqModule = new SimpleModule();
    jooqModule.addSerializer(JSONB.class, new JSONBSerializer());
    jooqModule.addDeserializer(JSONB.class, new JSONBDeserializer());
}

看看:

• How can I register and use the jackson AfterburnerModule in Spring Boot?
• Jackson global settings to deserialise array to custom list implementation
• Jackson custom serialization and deserialization
• In Spring Boot, adding a custom converter by extending MappingJackson2HttpMessageConverter seems to overwrite the existing converter
• Customizing HttpMessageConverters with Spring Boot and Spring MVC