Spring 3.2，Jackson2 ObjectMapper配置

Question

我在ObjectMapper的配置上有一个无法解决的问题。我需要配置它来忽略那些让我的POJO...so不容易的参数，但是我配置了上千种不同的方法，我不能让它工作。

我的servlet.xml

<bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" >
     <property name="objectMapper">
     <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
         <property name="featuresToDisable">
           <array>
            <util:constant 
            static-field="com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES"/>
          </array>
         </property>
      </bean>                  
    </property>  
</bean> 

我也尝试过扩展类ObjectMapper，但是我得到了同样的结果。我看到映射器配置正确，但我希望MappingJackson2HttpMessageConverter接收到不同的ObjectMapper实例。我不知道还能做些什么让我全局忽略这些参数。

当我使用应该忽略的参数(POJO中不存在)发出请求时，会在请求中出现语法错误。

我正在使用: Spring 3.2.0 jackson 2.1.2

致以最良好的问候和感谢

Answer 1

试一试

<!-- 
     Implement a custom ObjectMapper and initialize the features you needed 
     eg. FAIL_ON_UNKNOWN_PROPERTIES 
-->
<bean id="jacksonObjectMapper" class="com.sample.CustomObjectMapper"/>

<!-- Replace Spring's default message converter -->
<mvc:annotation-driven>
  <mvc:message-converters>
    <ref bean="jacksonObjectMapper"/>
  </mvc:message-converters>
</mvc:annotation-driven>

Answer 2

<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
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-3.2.xsd
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

<bean id="jacksonObjectMapper"
    class="com.fasterxml.jackson.databind.ObjectMapper" />

<bean
    class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
    <property name="targetObject" ref="jacksonObjectMapper" />
    <property name="targetMethod" value="configure" />
    <property name="arguments">
        <list>
            <value
                type="com.fasterxml.jackson.databind.DeserializationFeature">FAIL_ON_UNKNOWN_PROPERTIES</value>
            <value>false</value>
        </list>
    </property>
</bean>

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean
            class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper" ref="jacksonObjectMapper" />
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>