springboot项目整合druid数据库连接池的实现

< dependency >

     < groupId >com.alibaba</ groupId >

     < artifactId >druid-spring-boot-starter</ artifactId >

     < version >1.1.21</ version >

</ dependency >

<? xml version = "1.0" encoding = "UTF-8" ?>

< project xmlns = "http://maven.apache.org/POM/4.0.0"

          xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"

          xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >

     < modelVersion >4.0.0</ modelVersion >

     < parent >

         < groupId >org.springframework.boot</ groupId >

         < artifactId >spring-boot-starter-parent</ artifactId >

         < version >2.4.4</ version >

         < relativePath /> <!-- lookup parent from repository -->

     </ parent >

     < groupId >org.example</ groupId >

     < artifactId >springboot-druid</ artifactId >

     < version >1.0-SNAPSHOT</ version >

     < properties >

         < java.version >1.8</ java.version >

         < mybatis.version >1.3.2</ mybatis.version >

         < mysql.version >5.1.48</ mysql.version >

         < druid.version >1.1.9</ druid.version >

     </ properties >

     < dependencies >

         < dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-web</ artifactId >

         </ dependency >

         < dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-test</ artifactId >

             < scope >test</ scope >

         </ dependency >

         < dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-jdbc</ artifactId >

         </ dependency >

         < dependency >

             < groupId >org.mybatis.spring.boot</ groupId >

             < artifactId >mybatis-spring-boot-starter</ artifactId >

             < version >${mybatis.version}</ version >

         </ dependency >

         < dependency >

             < groupId >mysql</ groupId >

             < artifactId >mysql-connector-java</ artifactId >

             < version >${mysql.version}</ version >

         </ dependency >

<!--        <dependency>-->

<!--            <groupId>com.alibaba</groupId>-->

<!--            <artifactId>druid</artifactId>-->

<!--            <version>${druid.version}</version>-->

<!--        </dependency>-->

         < dependency >

             < groupId >com.alibaba</ groupId >

             < artifactId >druid-spring-boot-starter</ artifactId >

             < version >1.1.21</ version >

         </ dependency >

         < dependency >

             < groupId >org.projectlombok</ groupId >

             < artifactId >lombok</ artifactId >

             < optional >true</ optional >

         </ dependency >

     </ dependencies >

     < build >

         < plugins >

             < plugin >

                 < groupId >org.springframework.boot</ groupId >

                 < artifactId >spring-boot-maven-plugin</ artifactId >

             </ plugin >

         </ plugins >

     </ build >

</ project >

server:

   port: 8888

spring:

   application:

     name: springboot-druid

   datasource:

     username: root

     password: 123456

     url: jdbc:mysql://localhost:3306/spring-boot-test?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC

     driver-class-name: com.mysql.jdbc.Driver

     type: com.alibaba.druid.pool.DruidDataSource            # 数据库连接池类别

     druid:

       initial-size: 5                                       # 初始化大小

       min-idle: 10                                          # 最小连接数

       max-active: 20                                        # 最大连接数

       max-wait: 60000                                       # 获取连接时的最大等待时间

       min-evictable-idle-time-millis: 300000                # 一个连接在池中最小生存的时间，单位是毫秒

       time-between-eviction-runs-millis: 60000              # 多久才进行一次检测需要关闭的空闲连接，单位是毫秒

       filters: stat,wall                                    # 配置扩展插件：stat-监控统计，log4j-日志，wall-防火墙（防止SQL注入），去掉后，监控界面的sql无法统计

       validation-query: SELECT 1                            # 检测连接是否有效的 SQL语句，为空时以下三个配置均无效

       test-on-borrow: true                                  # 申请连接时执行validationQuery检测连接是否有效，默认true，开启后会降低性能

       test-on-return: true                                  # 归还连接时执行validationQuery检测连接是否有效，默认false，开启后会降低性能

       test-while-idle: true                                 # 申请连接时如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效，默认false，建议开启，不影响性能

       stat-view-servlet:

         enabled: true                                       # 是否开启 StatViewServlet

         allow: 127.0.0.1                                    # 访问监控页面 白名单，默认127.0.0.1

         deny: 192.168.56.1                                  # 访问监控页面 黑名单

         login-username: admin                               # 访问监控页面 登陆账号

         login-password: admin                               # 访问监控页面 登陆密码

       filter:

         stat:

           enabled: true                                     # 是否开启 FilterStat，默认true

           log-slow-sql: true                                # 是否开启 慢SQL 记录，默认false

           slow-sql-millis: 5000                             # 慢 SQL 的标准，默认 3000，单位：毫秒

           merge-sql: false                                  # 合并多个连接池的监控数据，默认false

# mybatis配置

mybatis:

   mapper-locations: classpath:mapper/*Mapper.xml

   type-aliases-package: com.dandelion.model

# 输出sql语句日志

logging:

   level:

     com:

       springboot:

         dao: debug