<!--解决json 乱码配置-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<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>
详情可以：https://blog.csdn.net/zhangqiang180/article/details/105168550
怎么解决springmvc json中的乱码问题（Json乱码解决统一代码）
原文：https://www.cnblogs.com/mvpbest/p/13353380.html