一、导入Druid依赖

        

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.1.21</version>
</dependency>

二、找到存放druid jar包的目录

        1、在目录栏执行cmd，调出命令行窗口

        2、在命令行窗口执行

        java -cp druid-1.1.21.jar com.alibaba.druid.filter.config.ConfigTools 数据库密码

        复制password和publickey

 三、项目配置

        修改yml配置文件

                1、filters添加config

                2、 配置解密，同时指定公钥；生成环境建议如下配置通过java-jar启动命令时指定spring.druid.publickey的值(java -jar xx.jar --spring.druid.publickey=公钥)，避免通过yml获取到公钥，开发环境可将公钥配置在idea启动参数内。

                connectionProperties: config.decrypt=true;config.decrypt.key=${spring.druid.publickey}

datasource:
    username: root
    password: RuacV1QzH80HVwZpR5MqagLoOWbRPYPj+yXKJrfEXJxIVchnWfGpdi2PTJCAlWoi7hNN+y4hhDmiGEvdYscW4w==
    url: jdbc:mysql://localhost:3306/article?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
    #druid 数据源专有配置
    druid:
      #配置druid监控页面
      stat-view-servlet:
        enabled: true
        url-pattern: /druid/*
        loginUsername: admin
        loginPassword: 123456
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    # 打开PSCache
    poolPreparedStatements: true
    #配置监控统计拦截的filters，stat:监控统计、log4j：日志记录、wall：防御sql注入
    #如果运行时报错  java.lang.ClassNotFoundException: org.apache.log4j.Priority
    #则导入 log4j 依赖即可，Maven 地址： https://mvnrepository.com/artifact/log4j/log4jDruidDataSourceFactory
    filters: stat,wall,config
    #指定每个连接上PSCache的大小
    maxPoolPreparedStatementPerConnectionSize: 20
    #合并多个DruidDataSource的监控数据
    useGlobalDataSourceStat: true
    #通过connectProperties属性来打开mergeSql功能；慢SQL记录；配置数据库密码解密;
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=2000;config.decrypt=true;config.decrypt.key=${spring.druid.publickey}