json转换器映射文件配置

//MappingJacksonHttpMessageConverter转换器，将对象转为json响应给浏览器 ：

<mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter"> <!-- <constructor-arg ref="utf8Charset"/> --> <!-- <property name="supportedMediaTypes" value = "text/plain;charset=UTF-8" /> --> <property name="writeAcceptCharset" value="false" /><!-- 用于避免响应头过大 --> <property name = "supportedMediaTypes"> <list> <value>text/plain;charset=UTF-8</value> <value>text/html;charset=UTF-8</value> <!-- <value>text/json;charset=UTF-8</value> --> </list> </property> </bean> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name = "supportedMediaTypes"> <list> <value>text/json;charset=UTF-8</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven>