先配置 XXX_ servletxml
<!-- 整合jackson 返回一个json格式 --><bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><property name="messageConverters"><list><ref bean="mappingJacksonHttpMessageConverter"/></list></property></bean><bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>再然后Action方法里注解就可以@RequestMapping(value="/XXXXXX", method = RequestMethod.POST)@ResponseBodypublic 返回类型 XXXXXX(){ }