springmvc 解决@ResponseBody注解返回中文乱码

使用messageConverters

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" >
    <property name="messageConverters">
        <list>
            <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/plain;charset=utf-8</value>
                        <value>text/html;charset=UTF-8</value>
                    </list>
                </property>
            </bean>
        </list>
    </property>
</bean> 

在springmvc的配置文件中，将消息转换器的bean放在 <mvc:annotation-driven/> 的前面（上面），否则配置不会生效

需要jackson的依赖

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.8</version>
        </dependency>

如果上面这个不够，那就再追加或者替换为：

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-asl</artifactId>
    <version>1.9.13</version>
</dependency>