druid控制台无法监控sql问题

springboot+mybatisplus+druid按照教程配置好之后，druid控制台监控sql页面无数据，filter类名为空，貌似没有注册进去去，代码如下：

@Configuration
public class DruidConfiguration {

    
    @Bean
    public ServletRegistrationBean druidServlet() {
        ServletRegistrationBean<Servlet> bean = new ServletRegistrationBean<>(new StatViewServlet(),"/druid/*");
        Map<String,String> map = new HashMap<>();
        map.put("loginUsername","admin");
        map.put("loginPassword","123456");
        map.put("deny","192.168.47.156");
        bean.setInitParameters(map);
        return bean;

    }

    @Bean
    public FilterRegistrationBean filterRegistrationBean() {
        FilterRegistrationBean<Filter> bean = new FilterRegistrationBean<>();
        bean.setFilter(new WebStatFilter());
        Map<String,String> map = new HashMap<>();
        map.put("exclusions","*.js,*.css,/druid/*");
        //拦截所有请求
        bean.setUrlPatterns(Arrays.asList("/*"));
        bean.setInitParameters(map);
        return bean;

    }


    @Bean
    public WallFilter wallFilter(){
        WallFilter wallFilter = new WallFilter();
        wallFilter.setConfig(wallConfig());
        return wallFilter;
    }

    @Bean
    public WallConfig wallConfig(){
        WallConfig wallConfig = new WallConfig();
        wallConfig.setMultiStatementAllow(true);
        //允许一次执行多条语句
        wallConfig.setNoneBaseStatementAllow(true);
        //是否允许非以上基本语句的其他语句
        wallConfig.setStrictSyntaxCheck(false);
        //是否进行严格的语法检测
        return wallConfig;
    }

    @Bean(name="dataSource")
    public DataSource dataSource(){
        return new DruidDataSource();
    }

    // 配置事物管理器
    @Bean(name="transactionManager")
    public DataSourceTransactionManager transactionManager(){
        return new DataSourceTransactionManager(dataSource());
    }

}
这段只有一个wallfilter能在控制台显示，statfilter无效

解决办法：
在jvm启动参数中加上：
-Ddruid.filters=mergeStat -Ddruid.useGlobalDataSourceStat=true，
我的是这个情况.


原文地址：https://github.com/alibaba/druid/wiki/%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98