<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.0.18</version>
</dependency>

# 数据库访问配置
# 主数据源，默认的
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456
# 下面为连接池的补充设置，应用到上面所有数据源中
# 初始化大小，最小，最大
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
# 配置获取连接等待超时的时间
spring.datasource.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.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.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.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.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
#spring.datasource.useGlobalDataSourceStat=true

import com.alibaba.druid.support.http.StatViewServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
/**
 * druid数据源状态监控.
 * Created by winner_0715 on 2017/4/19.
 */
@WebServlet(urlPatterns = "/druid/*",
    initParams = {
        // IP白名单 (没有配置或者为空，则允许所有访问)
        @WebInitParam(name = "allow", value = "192.168.1.72,127.0.0.1"),
        // IP黑名单 (存在共同时，deny优先于allow)
        @WebInitParam(name = "deny", value = "192.168.1.73"),
        // 用户名
        @WebInitParam(name = "loginUsername", value = "admin"),
        // 密码
        @WebInitParam(name = "loginPassword", value = "123456"),
        // 禁用HTML页面上的“Reset All”功能
        @WebInitParam(name = "resetEnable", value = "false")
    }
)
public class DruidStatViewServlet extends StatViewServlet {
  private static final long serialVersionUID = 1L;
}
DruidStatFilter:
import com.alibaba.druid.support.http.WebStatFilter;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
/**
 * druid过滤器.
 * Created by winner_0715 on 2017/4/19.
 */
@WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*",
    initParams = {
        // 忽略资源
        @WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")
    }
)
public class DruidStatFilter extends WebStatFilter {
}

import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
 * 这样的方式不需要添加注解：@ServletComponentScan
 * Created by winner_0715 on 2017/4/19.
 */
@Configuration
public class DruidConfiguration {
  /**
   * 注册一个StatViewServlet
   *
   * @return
   */
  @Bean
  public ServletRegistrationBean DruidStatViewServle2() {
    //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
    ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid2/*");
    //添加初始化参数：initParams
    //白名单：
    servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
    //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
    servletRegistrationBean.addInitParameter("deny", "192.168.1.73");
    //登录查看信息的账号密码.
    servletRegistrationBean.addInitParameter("loginUsername", "admin2");
    servletRegistrationBean.addInitParameter("loginPassword", "123456");
    //是否能够重置数据.
    servletRegistrationBean.addInitParameter("resetEnable", "false");
    return servletRegistrationBean;
  }
  /**
   * 注册一个：filterRegistrationBean
   *
   * @return
   */
  @Bean
  public FilterRegistrationBean druidStatFilter2() {
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
    //添加过滤规则.
    filterRegistrationBean.addUrlPatterns("/*");
    //添加不需要忽略的格式信息.
    filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid2/*");
    return filterRegistrationBean;
  }
}