shiro提取filter拦截器中的map数据存放到yml配置文件中的问题

最近在整合shiro，想把URL和权限什么的提取出来放在yml里，但是yml中的map数据却读取不到。。。

@Configuration
@Component
@ConfigurationProperties(prefix="shiroConfig")
public class ShiroConfig {

    @Value("shiroConfig.filterChainDefinitionMap")
    private Map filterChainDefinitionMap = new LinkedHashMap();

    public Map getFilterChainDefinitionMap() {
        return filterChainDefinitionMap;
    }

    public void setFilterChainDefinitionMap(Map filterChainDefinitionMap) {
        this.filterChainDefinitionMap = filterChainDefinitionMap;
    }

@Bean
@Autowired
public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager, View view,ShiroConfig shiroConfig){
ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();

    // 设置安全管理器
    shiroFilterFactoryBean.setSecurityManager(securityManager);


    //设置登录的页面，发送toLogin请求
   shiroFilterFactoryBean.setLoginUrl(view.getLogin());

   //设置未授权的页面
    shiroFilterFactoryBean.setUnauthorizedUrl(view.getUnauthorized());
    //设置过滤器
    shiroFilterFactoryBean.setFilterChainDefinitionMap(shiroConfig.getFilterChainDefinitionMap());
    return shiroFilterFactoryBean;
}

yml文件
shiroConfig:
  filterChainDefinitionMap:
    /testThymeleaf: anon
    /login: anon
    /add: perms[user:add]
    /update: perms[user:update]
    /*: authc

Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert value of type 'java.lang.String' to required type 'java.util.Map'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to r

说我返回值是string，但是我new的都是map啊