关于responseBody注解中文乱码的问题解决

在web.xml中定义字符集过滤器：

<filter>
        <filter-name>SpringEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>SpringEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

如果这样仍然不起作用，则需要在spring-mvc.xml中配置如下bean:

<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> 

值得一提的是，@ResponseBody注解是通过在spring-mvc.xml中配置的 <mvc:annotation-driven></mvc:annotation-driven>来启用的，所以上述bean必须写在 <mvc:annotation-driven></mvc:annotation-driven>的前边，否则是不起作用的。