SpringBootのMySQLへの接続は、バックエンドのインターフェイスの操作方法を書き込むためのデータを取得するために

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.20</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.3.8</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.3.8</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.3.8</version>
    </dependency>

    <bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" id="dataSource">
        <! -- 1.1. database driver -->
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <! -- 1.2. url to connect to the database -->
        <property name="url" value="jdbc:mysql://localhost:3306/spring?characterEncoding=utf8&amp;serverTimezone=UTC& quot;/>
        <! -- 1.3. username for connecting to the database -->
        <property name="username" value="root"></property>
        <! -- 1.4. password for connecting to the database -->
        <property name="password" value="root"></property>

    </bean>

    <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>