I'm trying my first Spring Boot application. And when I try to connect my sql database, it shows the application failed to connect to the database.

我正在尝试我的第一个Spring Boot应用程序。当我尝试连接我的SQL数据库时，它显示应用程序无法连接到数据库。

Here's the error message:

以下是错误消息：

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).

my yml file:

我的YML文件：

spring:
  datasource:
    # type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/test?useSSL=false
    username: root
    password: 
    #testWhileIdle: true
    #validationQuery: SELECT 1
  #jpa:
    #database: mysql
    #database-platform: org.hibernate.dialect.MySQLDialect

my pom.xml file:

我的pom.xml文件：

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- myBatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>3.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.28</version>
        </dependency>
        <!-- junit test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- lombok dependency -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>3.1.3</version>
            </plugin>
        </plugins>
    </build>

Anyone knows why?

有人知道为什么吗？

Thanks!!

谢谢！！

I tried to edit my paplication.yml file and change datasource property, but it does't work.

我试图编辑我的paplication.yml文件并更改数据源属性，但不起作用。

I think change name paplication.yml to application.yml file or introduce the new configuration file to Spring.

我认为将名称paplication.yml更改为Application.yml文件，或者将新的配置文件引入到Spring。