Can we use both jdbc and spring data jpa in a single spring project? without spring boot

Hi I have a client requirement where the legacy code is written with JDBC and now they want to shift to ORM but they want their old dao's(legacy code) to be present as well, So I tried to make a project where I configured both configurations but I am always ending up with errors. Can anyone please let me know the way or is it even possible to use both? I have attached the code below:

This is config file

@Configuration
@EnableJpaRepositories(basePackages = {"net.codejava.spring.repository"})
public class AppConfig {
    @Bean
    public LocalEntityManagerFactoryBean entityManagerFactory() {
        LocalEntityManagerFactoryBean factoryBean = new LocalEntityManagerFactoryBean();
        factoryBean.setPersistenceUnitName("TestDB");
        
        return factoryBean;
    }
    
    @Bean
    public JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory);
        
        return transactionManager;
    }

}

This is persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
          http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
    version="2.1">
    
    <persistence-unit name="TestDB">
        <properties>
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/contactdb" />
            <property name="javax.persistence.jdbc.user" value="root" />
            <property name="javax.persistence.jdbc.password" value="password" />
            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="true" />
        </properties>
    </persistence-unit>
    
</persistence>

This is MVC Config file

@Configuration
@ComponentScan(basePackages="net.codejava.spring")
@EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter{

    @Bean
    public ViewResolver getViewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        return resolver;
    }
    
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
    }

    @Bean
    public DataSource getDataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/contactdb");
        dataSource.setUsername("root");
        dataSource.setPassword("password");
        
        return dataSource;
    }
    
    @Bean
    public ContactDAO getContactDAO() {
        return new ContactDAOImpl(getDataSource());
    }
}

Attached below the folder structure of application