2、在springmvc中新增配置  

<!-- 用於將物件轉換為 JSON  -->  
<bean id="stringConverter"  class="org.springframework.http.converter.StringHttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/plain;charset=UTF-8</value>  
            </list>  
        </property>  
</bean>  
<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean>  
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <ref bean="stringConverter" />  
                <ref bean="jsonConverter" />  
            </list>  
        </property>  
</bean>