SpringBoot整合mybatis使用Druid数据源时报错，百度了很多解决办法，最后原因是:yml配置文件未能成功加载
解决办法:在pom.xml文件标签添加如下配置

 <!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 -->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.yml</include>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.yml</include>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

这里贴一下我的yml配置文件

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/springboot-mybatis?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    #   数据源其他配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 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
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    initialization-mode: always

# mybatis全局配置文件和mapper.xml文件的扫描配置
mybatis:
  type-aliases-package: com.zzti.springboot06datamybatis02.bean
  config-location: classpath:mybatis/mybatis-config.xml   #指定mybatis全局配置文件的路径
  mapper-locations: classpath:mybatis/mapper/**.xml        #指定mapper.xml配置文件的路径