关于SpringBoot数据源请参考我上一篇文章：https://www.cnblogs.com/yueshutong/p/9409295.html

一：Druid介绍

1. Druid是什么？

Druid是Java语言中最好的数据库连接池。Druid能够提供强大的监控和扩展功能。

2. 在哪里下载druid

• 正式版本下载：
  maven中央仓库: http://central.maven.org/maven2/com/alibaba/druid/

3. 怎么获取Druid的源码

Druid是一个开源项目，源码托管在github上，源代码仓库地址是 https://github.com/alibaba/druid。同时每次Druid发布正式版本和快照的时候，都会把源码打包，你可以从上面的下载地址中找到相关版本的源码

二：SpringBoot集成

首先在你的SpringBoot项目导入依赖

1.导入依赖

<dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.10</version>
</dependency>
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope>
</dependency>

2.配置数据源与连接池

spring:datasource:driver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql://localhost:3306/user?useUnicode=true&characterEncoding=utf-8&useSSL=falseusername: rootpassword: 123456type: com.alibaba.druid.pool.DruidDataSource
#   数据源其他配置initialSize: 5minIdle: 5maxActive: 20maxWait: 60000timeBetweenEvictionRunsMillis: 60000minEvictableIdleTimeMillis: 300000validationQuery: SELECT 1 FROM DUALtestWhileIdle: truetestOnBorrow: falsetestOnReturn: falsepoolPreparedStatements: true
#   配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙filters: stat,wall,log4jmaxPoolPreparedStatementPerConnectionSize: 20useGlobalDataSourceStat: trueconnectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

3.注入DataSource

@Configuration
public class DruidConfig {@ConfigurationProperties(prefix = "spring.datasource")@Beanpublic DataSource druid() {return new DruidDataSource();}//配置Druid的监控// 1、配置一个管理后台的Servlet@Beanpublic ServletRegistrationBean statViewServlet() {//配置参数参考ResourceServlet类ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");Map<String, String> initParams = new HashMap<>();initParams.put("loginUsername", "admin");initParams.put("loginPassword", "123456");initParams.put("allow", "");//默认就是允许所有访问initParams.put("deny", "192.168.15.21");//拒绝谁bean.setInitParameters(initParams);return bean;}//2、配置一个web监控的filter@Beanpublic FilterRegistrationBean webStatFilter() {FilterRegistrationBean bean = new FilterRegistrationBean();bean.setFilter(new WebStatFilter());Map<String, String> initParams = new HashMap<>();initParams.put("exclusions", "*.js,*.css,/druid/*");bean.setInitParameters(initParams);bean.setUrlPatterns(Arrays.asList("/*"));return bean;}
}

4.启动应用

访问http://localhost:8080/druid体验强大的Druid！

官方Spring boot集成文档：https://github.com/alibaba/druid/tree/master/druid-spring-boot-starter