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

问题描述

我的目标是配置 objectMapper ，它只能序列化用 @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，我按照解释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.

我按照描述这里。

但是当班级 NumbersOfNewEvents 是序列化的，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.

有人有提示吗？
提前致谢

Does anybody have a hint? Thanks in advance

Jackson 1.8.0
spring 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）以下基于注释的配置为我工作。

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;
    }
}

这篇关于在Spring中配置ObjectMapper的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！