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Failed to determine a suitable driver class


第一种情况

在application.properties/或者application.yml文件中没有添加数据库配置信息

spring:
datasource:
url: jdbc:mysql://localhost:3306/read_data?useUnicode=true&characterEncoding=UTF-8&useSSL=false
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver

第二种情况

yml或者properties文件没有被扫描到

需要在pom文件中<build></build>添加如下

<!-- 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>

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