springboot Failed to configure a DataSource: 'url' attribute is not specified and no emb

• 问题，项目启动报错：

Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
 
说明：
 
未能配置DataSource：未指定“url”特性，也无法配置任何嵌入的数据源。
 
原因：无法确定合适的驱动程序类别
 
操作：
 
考虑以下内容：
 
如果您想要一个嵌入式数据库（H2、HSQL或Derby），请将其放在类路径中。
 
如果您有要从特定配置文件加载的数据库设置，则可能需要激活它（当前没有激活的配置文件）。

• 解决方法：
• yml或者properties文件没有被扫描到，在pom文件中添加如下，来保证文件都能正常被扫描到并且加载成功 【方法一】

<build>
        <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>
    </build>

• 检查application.yml文件中数据库配置信息【方法二】

spring:
  datasource:
    url: jdbc:mysql://192.168.1.6:8806/business?useUnicode=true&characterEncoding=utf-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
    username: root
    password: 123456
    driverClassName: com.mysql.cj.jdbc.Driver

参考：https://blog.csdn.net/libusi001/article/details/123653595