maven依赖都整上
application.yml

server:
  # 端口号
  port: 8080
spring:
  # 数据源配置
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/spring-dev
    username: root
    password: 123456

    # Druid连接池配置
    type: com.alibaba.druid.pool.DruidDataSource
    # 初始化
    initialSize: 3
    # 最大
    maxActive: 20
    # 最小
    minIdle: 3
    # 最大连接等待超时时间
    maxWait: 60000
    # 打开PSCache,并且指定每个连接PSCache的大小
    poolPreparedStatements: true
    maxPoolPreparedStatementPerConnectionSize: 20
    validationQuery: select 'x'
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false 
    # 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
    timeBetweenEvictionRunsMillis: 60000
    # 配置一个连接在池中最小生存的时间,单位是毫秒
    minEvictableIdleTimeMillis: 300000
    # 配置监控统计拦截的filters,去掉后监控界面sql将无法统计,'wall'用于防火墙
    filters: stat, wall, log4j
  # spring data jpa配置
  jpa:
    hibernate:
      # 实体类有更新时，数据库表更新
      ddl-auto: update
    show-sql: true
    format_sql: true
    database-platform: org.hibernate.dialect.MySQL5InnoDBDialect
  http:
    # 过滤字符编码
    encoding:
      charset: UTF-8
      enabled: true
      force: true

druidconfig

@Configuration
public class DruidConfig {

    @Bean
    public ServletRegistrationBean statViewServlet() {
        // 创建servlet注册实体
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),
                "/druid/*");
        // 设置ip白名单
        servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
        // 设置ip黑名单,如果allow与deny共同存在时,deny优先于allow
        servletRegistrationBean.addInitParameter("deny", "192.168.0.1");
        // 设置控制台管理用户
        servletRegistrationBean.addInitParameter("loginUsername", "admin");
        servletRegistrationBean.addInitParameter("loginPassword", "123456");
        // 是否可以重置数据
        servletRegistrationBean.addInitParameter("resetEnable", "false");
        return servletRegistrationBean;
    }

    @Bean
    public FilterRegistrationBean statFilter() {
        // 创建过滤器
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        // 设置过滤器过滤路径
        filterRegistrationBean.addUrlPatterns("/*");
        // 忽略过滤的形式
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }

}