1、pom.xml中添加druid依赖

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.1.24</version>
</dependency>

2、application.yml中配置数据库

type指定数据源

spring:
  datasource:
    username: root123
    password: root123
    url: jdbc:mysql://localhost:3306/jianshu
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
    filters: stat

3、新建DruidConfig类

设置访问路径和账号密码

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.util.HashMap;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        return new DruidDataSource();
    }

    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        HashMap<String, String> initParameters = new HashMap<>();

        initParameters.put("loginUsername", "admin");
        initParameters.put("loginPassword", "123456");
        initParameters.put("allow", "");
        bean.setInitParameters(initParameters);
        return bean;
    }
}

4、运行项目，访问 /druid

首先会跳转到login页面，登录后可看到监控面板，如下