61.springboot 配置druid数据源 并查看监控信息

1.效果

2.配置过程

参考：https://www.jianshu.com/p/898e6f7bab18

（1） 使用druid数据源

 （2） 配置DruidConfiguration 配置类

@Bean
public ServletRegistrationBean startViewServlet(){
    ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
    // IP白名单
    servletRegistrationBean.addInitParameter("allow","127.0.0.1");
    // IP黑名单(共同存在时，deny优先于allow)
    servletRegistrationBean.addInitParameter("deny","127.0.0.1");
    //控制台管理用户
    servletRegistrationBean.addInitParameter("loginUsername","admin");
    servletRegistrationBean.addInitParameter("loginPassword","123456");
    //是否能够重置数据
    servletRegistrationBean.addInitParameter("resetEnable","false");
    return servletRegistrationBean;
}

@Bean
public FilterRegistrationBean statFilter(){
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
    //添加过滤规则
    filterRegistrationBean.addUrlPatterns("/*");
    //忽略过滤的格式
    filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
    return filterRegistrationBean;
}