SpringBoot中集成Shiro的时候， 配置setUnauthorizedUrl("/notPermit")了，但是不起作用，只会在控制台打印UnauthorizedException异常信息：
原因：

Shiro源码中是这样做的：

private void applyUnauthorizedUrlIfNecessary(Filter filter) {
        String unauthorizedUrl = this.getUnauthorizedUrl();
        if(StringUtils.hasText(unauthorizedUrl) && filter instanceof AuthorizationFilter) {
            AuthorizationFilter authzFilter = (AuthorizationFilter)filter;
            String existingUnauthorizedUrl = authzFilter.getUnauthorizedUrl();
            if(existingUnauthorizedUrl == null) {
                authzFilter.setUnauthorizedUrl(unauthorizedUrl);
            }
        }
    }

只有perms，roles，ssl，rest，port才是属于AuthorizationFilter，而anon，authcBasic，authc，user是AuthenticationFilter，所以unauthorizedUrl设置后不起作用，只会在控制台打印异常信息。

接下来，我们需要做一些配置，自己来处理UnauthorizedException异常：

@Configuration
public class ExceptionConf {
    @Bean
    public SimpleMappingExceptionResolver resolver() {
        SimpleMappingExceptionResolver resolver = new SimpleMappingExceptionResolver();
        Properties properties = new Properties();
        properties.setProperty("org.apache.shiro.authz.UnauthorizedException", "/notPermit");
        resolver.setExceptionMappings(properties);
        return resolver;
    }
}

再次测试就正常跳转到notPermit了。