<dependency>

            <groupId>log4j</groupId>

            <artifactId>log4j</artifactId>

            <version>1.2.</version>

        </dependency>

log4j.rootLogger=DEBUG,Console

log4j.appender.Console=org.apache.log4j.ConsoleAppender

log4j.appender.Console.layout=org.apache.log4j.PatternLayout

log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n

log4j.logger.org.apache=INFO

package cn.edu.aynu.config;

import com.alibaba.druid.pool.DruidDataSource;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

@Configuration

public class druidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")

    @Bean

    public DataSource druid(){

        return  new DruidDataSource();

    }

}

  initialSize:

    minIdle:

    maxActive:

    maxWait:

    timeBetweenEvictionRunsMillis:

    minEvictableIdleTimeMillis:

    validationQuery: SELECT  FROM DUAL

    testWhileIdle: true

    testOnBorrow: false

    testOnReturn: false

    poolPreparedStatements: true

    #   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

    filters: stat,wall,log4j

    maxPoolPreparedStatementPerConnectionSize:

    useGlobalDataSourceStat: true

    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=

url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC