xml 您如何全局设置 Jackson 以忽略 Spring 中的未知属性？
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How do you globally set Hymanson to ignore unknown properties within Spring?
提问by jnrcorp
Hymanson has annotations for ignoring unknown properties within a class using:
Hymanson 使用以下注释忽略类中的未知属性：
@JsonIgnoreProperties(ignoreUnknown = true)
It allows you to ignore a specific property using this annotation:
它允许您使用此注释忽略特定属性：
@JsonIgnore
If you'd like to globally set it you can modify the object mapper:
如果您想全局设置它，您可以修改对象映射器：
// Hymanson 1.9 and before
objectMapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
// or Hymanson 2.0
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
How do you set this globally using spring so it can be @Autowiredat server start up without writing additional classes?
您如何使用 spring 全局设置它，以便它可以@Autowired在服务器启动时无需编写其他类？
采纳答案by jnrcorp
This can be achieved using spring's MethodInvokingFactoryBean:
这可以使用 spring 的 MethodInvokingFactoryBean 来实现：
<!-- Hymanson Mapper -->
<bean id="HymansonObjectMapper" class="org.codehaus.Hymanson.map.ObjectMapper" />
<bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetObject" ref="HymansonObjectMapper" />
<property name="targetMethod" value="configure" />
<property name="arguments">
<list>
<value type="org.codehaus.Hymanson.map.DeserializationConfig.Feature">FAIL_ON_UNKNOWN_PROPERTIES</value>
<value>false</value>
</list>
</property>
</bean>
This can be wired to a RestTemplate like this:
这可以像这样连接到 RestTemplate ：
<bean id="restTemplate" class="org.springframework.web.client.RestTemplate">
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingHymansonHttpMessageConverter">
<property name="objectMapper" ref="HymansonObjectMapper" />
</bean>
</list>
</property>
</bean>
It can also be injected directly into the message converters for use with Spring MVC:
它也可以直接注入到消息转换器中以与 Spring MVC 一起使用：
<mvc:annotation-driven>
<mvc:message-converters>
<!-- Hymanson converter for HTTP messages -->
<bean class="org.springframework.http.converter.json.MappingHymansonHttpMessageConverter">
<property name="objectMapper" ref="HymansonObjectMapper" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
回答by xdebug
For Hymanson 1.9x or below you can ignore unknown properties with object mapper provider
对于 Hymanson 1.9x 或更低版本，您可以使用对象映射器提供程序忽略未知属性
@Provider
@Component
public class JerseyObjectMapperProvider implements ContextResolver<ObjectMapper> {
@Override
public ObjectMapper getContext(Class<?> type) {
ObjectMapper result = new ObjectMapper();
result.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
return result;
}
}
For Hymanson 2.x and above you can ignore unknown properties with object mapper provider
对于 Hymanson 2.x 及更高版本，您可以使用对象映射器提供程序忽略未知属性
@Provider
@Component
public class JerseyObjectMapperProvider implements ContextResolver<ObjectMapper> {
@Override
public ObjectMapper getContext(Class<?> type) {
ObjectMapper result = new ObjectMapper();
result.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
return result;
}
}
Jersey classes are not auto-discovered by Spring. Have to register them manually.
Jersey 类不会被 Spring 自动发现。必须手动注册它们。
public class JerseyConfig extends ResourceConfig {
public JerseyConfig() {
register(JerseyObjectMapperProvider.class);
}
}
回答by pakman
For newer Hymanson versions (2.x) there are a few changes:
对于较新的 Hymanson 版本 (2.x)，有一些变化：
<!-- Hymanson Mapper -->
<bean id="HymansonObjectMapper" class="com.fasterxml.Hymanson.databind.ObjectMapper" />
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetObject" ref="HymansonObjectMapper" />
<property name="targetMethod" value="configure" />
<property name="arguments">
<list>
<value type="com.fasterxml.Hymanson.databind.DeserializationFeature">FAIL_ON_UNKNOWN_PROPERTIES</value>
<value>false</value>
</list>
</property>
</bean>
