【笔记】springmvc controller返回json的注解@ResponseBody

一定要在xml中配置, 才可以在Controller上用注解直接返回json

<!-- 避免IE执行AJAX时,返回JSON出现下载文件 --><bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"><property name="supportedMediaTypes"><list><value>text/html;charset=UTF-8</value></list></property></bean><bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><property name="messageConverters"><list><ref bean="mappingJacksonHttpMessageConverter" /></list></property></bean>