Spring/spring-hateoas
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#341 - Default ObjectMapper for HAL now ignores unknown properties.

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We now explicitly disable the "fail on unknown properties" deserialization feature for the ObjectMapper instance used with our default HAL setup to be able to use it with a RestTemplate out of the box.
This commit is contained in:
Oliver Gierke
2015-05-17 17:26:33 +02:00
parent 312fa3ead9
commit 4c2c6d5a4a
2 changed files with 55 additions and 1 deletions
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42
src/main/java/org/springframework/hateoas/config/HypermediaSupportBeanDefinitionRegistrar.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2013 the original author or authors.
* Copyright 2013-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -55,6 +55,7 @@ import org.springframework.hateoas.hal.HalLinkDiscoverer;
import org.springframework.hateoas.hal.Jackson2HalModule;
import org.springframework.hateoas.mvc.TypeConstrainedMappingJackson2HttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.plugin.core.PluginRegistry;
import org.springframework.plugin.core.support.PluginRegistryFactoryBean;
@@ -63,6 +64,7 @@ import org.springframework.web.client.RestTemplate;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
@@ -116,6 +118,9 @@ class HypermediaSupportBeanDefinitionRegistrar implements ImportBeanDefinitionRe
BeanDefinitionBuilder halQueryMapperBuilder = rootBeanDefinition(ObjectMapper.class);
registerSourcedBeanDefinition(halQueryMapperBuilder, metadata, registry, HAL_OBJECT_MAPPER_BEAN_NAME);
BeanDefinitionBuilder customizerBeanDefinition = rootBeanDefinition(DefaultObjectMapperCustomizer.class);
registerSourcedBeanDefinition(customizerBeanDefinition, metadata, registry);
BeanDefinitionBuilder builder = rootBeanDefinition(Jackson2ModuleRegisteringBeanPostProcessor.class);
registerSourcedBeanDefinition(builder, metadata, registry);
}
@@ -307,4 +312,39 @@ class HypermediaSupportBeanDefinitionRegistrar implements ImportBeanDefinitionRe
}
}
}
/**
* {@link BeanPostProcessor} to disable the default HAL {@link ObjectMapper} to fail on unknown properties. Needed as
* the methods to do that on {@link Jackson2ObjectMapperFactoryBean} were introduced in Spring 4.1 only.
*
* @author Oliver Gierke
*/
private static class DefaultObjectMapperCustomizer implements BeanPostProcessor {
/*
* (non-Javadoc)
* @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization(java.lang.Object, java.lang.String)
*/
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (!HAL_OBJECT_MAPPER_BEAN_NAME.equals(beanName)) {
return bean;
}
ObjectMapper mapper = (ObjectMapper) bean;
mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
return mapper;
}
/*
* (non-Javadoc)
* @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessBeforeInitialization(java.lang.Object, java.lang.String)
*/
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
}
}