SpringBoot - Failed to determine a suitable driver class

报错问题

关键信息：Description: Failed to auto-configure a DataSource: ‘spring.datasource.url’ is not
specified and no embedded datasource could be auto-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)

原因分析

启动时加载配置文件失败，异常报错，启动失败（网上有些人遇到启动时本不需要加载数据源，却加载了，导致这个问题）

解决方案

• 方法一（启动时加载本不需要加载的数据源）

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class SpringBootApplication {
    public static void main(String[] args) {
        SpringApplication.run(MySpringBootApplication.class,args);
    }
}

Ps：exclude = DataSourceAutoConfiguration.class 加上这段代码，去掉数据源

• 方法二（有数据源依旧报错，配置文件没有加载成功）

<build>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>*</include>
                <include>*/*</include>
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
 
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>3.0.0-M1</version>
            <configuration>
                <useSystemClassLoader>false</useSystemClassLoader>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <encoding>UTF-8</encoding>
                <testIncludes>
                    <testInclude>none</testInclude>
                </testIncludes>
                <compilerArguments>
                    <extdirs>${project.basedir}/src/main/webapp/WEB-INF/lib</extdirs>
                </compilerArguments>
            </configuration>
        </plugin>
    </plugins>
</build>

Ps：可以尝试在pom.xml文件的build标签中加入以上内容