詳解springboot項(xiàng)目中整合druid數(shù)據(jù)庫(kù)連接池的完整步驟

<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            # 數(shù)據(jù)庫(kù)連接池類(lèi)別
    druid:
      initial-size: 5                                       # 初始化大小
      min-idle: 10                                          # 最小連接數(shù)
      max-active: 20                                        # 最大連接數(shù)
      max-wait: 60000                                       # 獲取連接時(shí)的最大等待時(shí)間
      min-evictable-idle-time-millis: 300000                # 一個(gè)連接在池中最小生存的時(shí)間，單位是毫秒
      time-between-eviction-runs-millis: 60000              # 多久才進(jìn)行一次檢測(cè)需要關(guān)閉的空閑連接，單位是毫秒
      filters: stat,wall                                    # 配置擴(kuò)展插件：stat-監(jiān)控統(tǒng)計(jì)，log4j-日志，wall-防火墻（防止SQL注入），去掉后，監(jiān)控界面的sql無(wú)法統(tǒng)計(jì)
      validation-query: SELECT 1                            # 檢測(cè)連接是否有效的 SQL語(yǔ)句，為空時(shí)以下三個(gè)配置均無(wú)效
      test-on-borrow: true                                  # 申請(qǐng)連接時(shí)執(zhí)行validationQuery檢測(cè)連接是否有效，默認(rèn)true，開(kāi)啟后會(huì)降低性能
      test-on-return: true                                  # 歸還連接時(shí)執(zhí)行validationQuery檢測(cè)連接是否有效，默認(rèn)false，開(kāi)啟后會(huì)降低性能
      test-while-idle: true                                 # 申請(qǐng)連接時(shí)如果空閑時(shí)間大于timeBetweenEvictionRunsMillis，執(zhí)行validationQuery檢測(cè)連接是否有效，默認(rèn)false，建議開(kāi)啟，不影響性能
      stat-view-servlet:
        enabled: true                                       # 是否開(kāi)啟 StatViewServlet
        allow: 127.0.0.1                                    # 訪問(wèn)監(jiān)控頁(yè)面 白名單，默認(rèn)127.0.0.1
        deny: 192.168.56.1                                  # 訪問(wèn)監(jiān)控頁(yè)面 黑名單
        login-username: admin                               # 訪問(wèn)監(jiān)控頁(yè)面 登陸賬號(hào)
        login-password: admin                               # 訪問(wèn)監(jiān)控頁(yè)面 登陸密碼
      filter:
        stat:
          enabled: true                                     # 是否開(kāi)啟 FilterStat，默認(rèn)true
          log-slow-sql: true                                # 是否開(kāi)啟 慢SQL 記錄，默認(rèn)false
          slow-sql-millis: 5000                             # 慢 SQL 的標(biāo)準(zhǔn)，默認(rèn) 3000，單位：毫秒
          merge-sql: false                                  # 合并多個(gè)連接池的監(jiān)控?cái)?shù)據(jù)，默認(rèn)false

# mybatis配置
mybatis:
  mapper-locations: classpath:mapper/*Mapper.xml
  type-aliases-package: com.dandelion.model

# 輸出sql語(yǔ)句日志
logging:
  level:
    com:
      springboot:
        dao: debug