JSON 数据传递中文乱码问题

@RequestMapping(value="/getrolelist.html",produces={"application/json;charset=UTF-8"})
    @ResponseBody
    public Object getRoleList(){
        HashMap<String,List<Role>> resultMap=new HashMap<String, List<Role>>();
        List<Role> roleList=roleService.getRoleList();
        resultMap.put("roleList",roleList);
        for(Role role:roleList){
            logger.info("角色id"+role.getId()+role.getRoleName());
        }
        
        return JSONArray.toJSONString(roleList);//把resultMap转换成JSON格式返回
    }

    <mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                    <value>application/json;charset=UTF-8</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

//修改value后缀名    
    @RequestMapping(value="/getrolelist.do",produces=        {"application/json;charset=UTF-8"})
    @ResponseBody
//修改value后缀名    
@RequestMapping(value="/getrolelist",produces={"application/json;charset=UTF-8"})
    @ResponseBody