Why is there no datasource (mysql) in Assign Data Source?

Question

Hibernate

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/jdbc
       http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
       http://www.springframework.org/schema/util
       http://www.springframework.org/schema/util/spring-util.xsd
       http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
         http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context.xsd">

    <bean id="transactionManager"
          class="org.springframework.orm.hibernate5.HibernateTransactionManager"
          p:sessionFactory-ref="sessionFactory"/>
    <tx:annotation-driven/>
    <context:component-scan base-package="DAO"/>
    <bean id="sessionFactory"
          class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"
          p:dataSource-ref="dataSource"
          p:packagesToScan="empty"
          p:hibernateProperties-ref="hibernateProperties"/>
    <util:properties id="hibernateProperties">
        <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
        <prop key="hibernate.max_fetch_depth">3</prop>
        <prop key="hibernate.jdbc.fetch_size">50</prop>
        <prop key="hibernate.jdbc.batch_size">10</prop>
        <prop key="hibernate.show_sql">true</prop>
    </util:properties>
    <bean id="dataSource"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource"
          p:driverClassName="com.mysql.jdbc.Driver"
          p:url="jdbc:mysql://localhost:3306/web"
          p:username="root"
          p:password="root"/>
</beans>