springboot整合druid数据源，开启监控管理

• druid依赖

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid-spring-boot-starter</artifactId>
  <version>1.1.2</version>
</dependency>

• 添加druid配置类

@Configuration
public class DruidConfiguration {

    @Bean
    public ServletRegistrationBean statViewServlet() {
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        // 添加IP白名单(不设置则允许全部)
        servletRegistrationBean.addInitParameter("allow", "");
        // 添加IP黑名单，当白名单和黑名单重复时，黑名单优先级更高
        servletRegistrationBean.addInitParameter("deny", "192.168.25.123");
        // 添加控制台管理用户
        servletRegistrationBean.addInitParameter("loginUsername", "admin");
        servletRegistrationBean.addInitParameter("loginPassword", "admin");
        // 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("/*");
        // 忽略过滤格式
        filterRegistrationBean.addInitParameter("exclusions", "/static/*,*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*,");
        return filterRegistrationBean;
    }
}

• 启动springb项目，访问/druid，即可登录。

常见问题，开启监控之后并没有数据，需要在配置文件中加入 spring.datasource.druid.filters=stat，如果需要对url进行监控，某个包下的类进行监控，则需要加入下面的代码。

    @Bean
    public DruidStatInterceptor getDruidStatInterceptor() {
        return new DruidStatInterceptor();
    }
    
    
    @Bean
    @Scope("prototype")
    public JdkRegexpMethodPointcut druidStatPointcut() {
        JdkRegexpMethodPointcut pointcut = new JdkRegexpMethodPointcut();
        pointcut.setPatterns("com.a.*","com.b.*");//改为需要监控的包
        return pointcut;
    }
    
    @Bean
    public DefaultPointcutAdvisor druidStatAdvisor(DruidStatInterceptor druidStatInterceptor, JdkRegexpMethodPointcut druidStatPointcut) {
        DefaultPointcutAdvisor defaultPointAdvisor = new DefaultPointcutAdvisor();
        defaultPointAdvisor.setPointcut(druidStatPointcut);
        defaultPointAdvisor.setAdvice(druidStatInterceptor);
        return defaultPointAdvisor;
    }