Spring MVC 配置文件设置全局编码

<!--启用 mvc 的常用注解-->
<mvc:annotation-driven validator="myValidator" conversion-service="conversionService">
    <mvc:message-converters>
        <!--@ResponseBody 的 UTF-8 编码-->
        <bean class="org.springframework.http.converter.StringHttpMessageConverter">
            <constructor-arg value="UTF-8"/>
        </bean>
        <!-- Fail On Empty Beans... -->
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper">
                <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                    <property name="failOnEmptyBeans" value="false"/>
                </bean>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>