在 Spring 中配置 ObjectMapper [英] Configuring ObjectMapper in Spring

问题描述

我的目标是配置 objectMapper，使其只序列化用 @JsonProperty 注释的元素.

my goal is to configure the objectMapper in the way that it only serialises element which are annotated with @JsonProperty.

为了做到这一点，我遵循了这个解释，其中说明了如何配置对象映射器.

In order to do so I followed this explanation which says how to configurate the objectmapper.

我在此处中包含了自定义对象映射器.

I included the custom objectmapper as described here.

然而，当类 NumbersOfNewEvents 被序列化时，它仍然包含 json 中的所有属性.

However when the class NumbersOfNewEvents is serialized it still contains all attributes in the json.

有大佬指点一下吗?提前致谢

Does anybody have a hint? Thanks in advance

杰克逊 1.8.0春天 3.0.5

Jackson 1.8.0 spring 3.0.5

CustomObjectMapper

public class CompanyObjectMapper extends ObjectMapper {
    public CompanyObjectMapper() {
        super();
        setVisibilityChecker(getSerializationConfig()
                .getDefaultVisibilityChecker()
                .withCreatorVisibility(JsonAutoDetect.Visibility.NONE)
                .withFieldVisibility(JsonAutoDetect.Visibility.NONE)
                .withGetterVisibility(JsonAutoDetect.Visibility.NONE)
                .withIsGetterVisibility(JsonAutoDetect.Visibility.NONE)
                .withSetterVisibility(JsonAutoDetect.Visibility.DEFAULT));
    }
}

servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <context:component-scan base-package="de.Company.backend.web" />

    <mvc:annotation-driven />

    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
                    <property name="objectMapper" ref="jacksonObjectMapper" />
                </bean>
            </list>
        </property>
    </bean>

    <bean id="jacksonObjectMapper" class="de.Company.backend.web.CompanyObjectMapper" />
</beans>

NumbersOfNewEvents

public class NumbersOfNewEvents implements StatusAttribute {

    public Integer newAccepts;
    public Integer openRequests;

    public NumbersOfNewEvents() {
        super();
    }
}

推荐答案

使用 Spring Boot (1.2.4) 和 Jackson (2.4.6) 以下基于注解的配置对我有用.

Using Spring Boot (1.2.4) and Jackson (2.4.6) the following annotation based configuration worked for me.

@Configuration
public class JacksonConfiguration {

    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.configure(MapperFeature.DEFAULT_VIEW_INCLUSION, true);

        return mapper;
    }
}

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