spring mvc 与fastjson集合

在使用spring mvc框架时候,有时候请求须要返回json格式.spring默认使用jackjson,可是我须要用fastjson,每次手动转换比较麻烦,须要spring自动为我转换,配置代码以下

Spring版本4.0.0

默认使用jackjson的配置
<annotation-driven>
</annotation-driven> 

使用fastjson的配置
    <annotation-driven>
      <message-converters register-defaults="true">
          <beans:bean id="fastJsonHttpMessageConverter" 
class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <beans:property name="supportedMediaTypes">
                    <beans:list>
                        <beans:value>application/json</beans:value>
                    </beans:list>
                </beans:property>
            </beans:bean>
        </message-converters>
    </annotation-driven>