springboot配置mysql连接的实例代码

<!-- 使用MySQL数据库-->
 	<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <scope>runtime</scope>
 </dependency>
 <!--druid连接池-->
 <dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid-spring-boot-starter</artifactId>
  <version>1.1.10</version>
 </dependency>
 <!-- 使用mybatis-->
 <dependency>
  <groupId>org.mybatis.spring.boot</groupId>
  <artifactId>mybatis-spring-boot-starter</artifactId>
  <version>${mybatis.version}</version>
 </dependency>

<build>
  <!--扫描xml文件-->
  <resources>
   <resource>
    <directory>src/main/java</directory>
    <includes>
     <include>**/ *.xml</include>
    </includes>
    <filtering>true</filtering>
   </resource>
   <resource>
    <directory>src/main/resources</directory>
    <includes>
     <include>*</include>
    </includes>
    <filtering>true</filtering>
   </resource>
  </resources>
 </build> 

#项目工程信息
spring:
#Mysql数据库信息
 datasource:
 driver-class-name: com.mysql.cj.jdbc.Driver
 url: jdbc:mysql://连接IP地址:端口/数据库名?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
 username: 用户名
 password: 密码
 type: com.alibaba.druid.pool.DruidDataSource
 druid:
  #下面为连接池的补充设置，应用到上面所有数据源中
  initial-size: 5 #初始化大小，最小，最大
  min-idle: 5 #最小，最大
  max-active: 20 #最大
  max-wait: 60000 #配置获取连接等待超时的时间
  time-between-eviction-runs-millis: 60000 #配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
  min-evictable-idle-time-millis: 300000 #配置一个连接在池中最小生存的时间，单位是毫秒
  validation-query: SELECT 1 FROM DUAL
  test-while-idle: true
  test-on-borrow: false
  test-on-return: false
  pool-prepared-statements: true #打开PSCache，并且指定每个连接上PSCache的大小
  max-pool-prepared-statement-per-connection-size: 20 #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
  use-global-data-source-stat: true
  connect-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 #通过connectProperties属性来打开mergeSql功能；慢SQL记录
  #配置监控服务器
  stat-view-servlet:
  login-username: admin
  login-password: 123456
  reset-enable: false
  url-pattern: /druid/*
  web-stat-filter:
  url-pattern: /* #添加过滤规则
  exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*" #忽略过滤格式
#mybatis集成
mybatis:
 mapper-locations: classpath:com/../../mapper/*.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="dao层类路径">
	<!--查询-->
	<select></select>
	<!--新增-->
	<insert></insert>
	<!--修改-->
	<update></update>
	<!--删除-->
	<delete></delete>
	......
</mapper>