Springboot使用Druid配置数据源

• 首先是配置文件，如druid.properties
• • 自定义Configuration
  • 初始化数据源
  • 启动后查看druid健康状态

#数据源配置
spring.datasource.type = com.alibaba.druid.pool.DruidDataSource
# 使用阿里的Druid连接池
spring.datasource.driver-class-name = com.mysql.cj.jdbc.Driver
# 填写你数据库的url、登录名、密码和数据库名
spring.datasource.url = jdbc:mysql://127.0.0.1:3306/test?useSSL=FALSE&useUnicode=TRUE&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true
spring.datasource.username = root
spring.datasource.password = root

# 连接池的配置信息
# 初始化大小，最小，最大
spring.datasource.druid.initial-size = 5
spring.datasource.druid.min-idle = 5
spring.datasource.druid.maxActive = 20
# 配置获取连接等待超时的时间-1min
spring.datasource.druid.maxWait = 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
spring.datasource.druid.timeBetweenEvictionRunsMillis = 60000
# 配置一个连接在池中最小生存的时间，单位是毫秒
spring.datasource.druid.minEvictableIdleTimeMillis = 300000
spring.datasource.druid.validationQuery = SELECt 1 FROM DUAL
spring.datasource.druid.testWhileIdle = true
spring.datasource.druid.testOnBorrow = false
spring.datasource.druid.testOnReturn = false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.druid.poolPreparedStatements = true
spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize = 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
spring.datasource.druid.filters = stat,wall,slf4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.druid.connectionProperties = druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 配置DruidStatFilter
spring.datasource.druid.web-stat-filter.enabled = true
spring.datasource.druid.web-stat-filter.url-pattern = /druid
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),dataSourceConfig.getStatViewServletUrlPattern());
        //urlPattern-访问路径设置
        //IP配置
        servletRegistrationBean.addInitParameter("allow",dataSourceConfig.getStatViewServletAllow());//IP白名单
        servletRegistrationBean.addInitParameter("deny",dataSourceConfig.getStatViewServletDeny());//IP黑名单
        //登陆账户配置
        servletRegistrationBean.addInitParameter("loginUsername",dataSourceConfig.getStatViewServletLoginUsername());
        servletRegistrationBean.addInitParameter("loginPassword",dataSourceConfig.getStatViewServletLoginPassword());
        //是否允许Reset All-计数器清零操作
        servletRegistrationBean.addInitParameter("resetEnable",dataSourceConfig.getStatViewServletResetEnable());
        return servletRegistrationBean;
    }


    
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        filterRegistrationBean.setFilter(new WebStatFilter());
        //设置过滤器
        filterRegistrationBean.addUrlPatterns(dataSourceConfig.getWebStatFilterUrlPattern());//url过滤规则
        filterRegistrationBean.addInitParameter("enabled",dataSourceConfig.getWebStatFilterEnabled());//是否开启过滤功能
        filterRegistrationBean.addInitParameter("exclusions",dataSourceConfig.getWebStatFilterExclusions());//忽略
        return filterRegistrationBean;
    }

http://localhost:8080/druid/index.html