参考了很多文章，记录下自己的学习过程！

参考：https://blog.csdn.net/weixin_40776321/article/details/99633110

1. 在pom.xml中添加依赖：

<dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.20</version>
</dependency>

2.  在application-xxx.yaml中添加数据源配置

spring:datasource:type: com.alibaba.druid.pool.DruidDataSourceurl: jdbc:mysql://xx.xx.xx.xx:3306/DB?useSSL=false&useTimezone=true&serverTimezone=GMT%2B8&allowMultiQueries=trueusername: rootpassword: 112233driver-class-name: com.mysql.cj.jdbc.Driverdbcp2:min-idle: 3             # 数据库连接池的最小维持连接数initial-size: 3max-total: 5            # 最大的连接数max-wait-millis: 200    # 等待连接获取的最大超时时间

3. 添加一个Druid数据源配置文件：DruidConfig.java

package com.joe.config;import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
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;import javax.sql.DataSource;
import java.util.HashMap;@Configuration
public class DruidConfig {@Bean@SuppressWarnings("unchecked")public ServletRegistrationBean druidServlet(){var bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");var map = new HashMap<String, String>() {{put("allow", "127.0.0.1,192.168.1.10");put("deny", "192.168.1.12");put("loginUsername", "root");put("loginPassword", "root");put("resetEnable", "false");}};bean.setInitParameters(map);return bean;}@Bean@SuppressWarnings("unchecked")public FilterRegistrationBean filterRegistrationBean(){var bean = new FilterRegistrationBean();bean.setFilter(new WebStatFilter());bean.addUrlPatterns("/*");bean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.css,/druid/*");return bean;}@Bean@ConfigurationProperties(prefix = "spring.datasource")public DataSource druidDataSource(){return new DruidDataSource();}
}

4. 编译、运行，测试下数据库操作是否正常！