1兵琳，添加 druid 的jar

<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.29</version>
</dependency>

2狂秘，配置 DruidConfiguration 類

package com.yuqiyu.character3;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class DruidConfiguration {
    @Bean
    public ServletRegistrationBean statViewServlet(){
        //創(chuàng)建servlet注冊實體
  ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
        //設(shè)置ip白名單
        servletRegistrationBean.addInitParameter("allow","127.0.0.1");
        //設(shè)置ip黑名單，如果allow與deny共同存在時,deny優(yōu)先于allow
  servletRegistrationBean.addInitParameter("deny","192.168.0.19");
        //設(shè)置控制臺管理用戶
        servletRegistrationBean.addInitParameter("loginUsername","druid");
        servletRegistrationBean.addInitParameter("loginPassword","123456");
  //是否可以重置數(shù)據(jù)
        servletRegistrationBean.addInitParameter("resetEnable","false");
        return servletRegistrationBean;
    }
 @Bean
    public FilterRegistrationBean statFilter(){
        //創(chuàng)建過濾器
   FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        //設(shè)置過濾器過濾路徑
        filterRegistrationBean.addUrlPatterns("/*");
   //忽略過濾的形式
        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }
}

3躯肌，yml配置

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8
    username: root
    password: root
    #最大活躍數(shù)
    maxActive: 20
    #初始化數(shù)量
    initialSize: 1
    #最大連接等待超時時間
    maxWait: 60000
    #打開PSCache春宣，并且指定每個連接PSCache的大小
    poolPreparedStatements: true
    maxPoolPreparedStatementPerConnectionSize: 20
    #通過connectionProperties屬性來打開mergeSql功能扶平；慢SQL記錄
    #connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
    minIdle: 1
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: select 1 from dual
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    #配置監(jiān)控統(tǒng)計攔截的filters屈糊，去掉后監(jiān)控界面sql將無法統(tǒng)計,'wall'用于防火墻
    filters: stat, wall, log4j
  jpa:
    properties:
      hibernate:
        show_sql: true
        format_sql: true

4谍失，項目運行成功后，我們要訪問Druid的監(jiān)控界面嫡丙，訪問地址：127.0.0.1:8080/druid/login.html拴袭， 輸入配置的用戶名和密碼