如何在Java Spring中使用泛型实现存储库模式

import org.springframework.data.jpa.repository.JpaRepository;

public interface Repository<T> extends JpaRepository<T, Long> {
    // 定义自定义的查询方法
}

import org.springframework.data.jpa.repository.support.SimpleJpaRepository;
import javax.persistence.EntityManager;
import java.io.Serializable;

public class RepositoryImpl<T, ID extends Serializable> extends SimpleJpaRepository<T, ID> implements Repository<T> {
    private final EntityManager entityManager;

    public RepositoryImpl(Class<T> domainClass, EntityManager entityManager) {
        super(domainClass, entityManager);
        this.entityManager = entityManager;
    }

    // 实现自定义的查询方法
}

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.example.entity" />
    <!-- 其他配置 -->
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<bean id="repository" class="com.example.repository.RepositoryImpl">
    <constructor-arg name="domainClass" value="com.example.entity.Entity" />
    <constructor-arg name="entityManager" ref="entityManagerFactory" />
</bean>

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MyService {
    private final Repository<Entity> repository;

    @Autowired
    public MyService(Repository<Entity> repository) {
        this.repository = repository;
    }

    public void saveEntity(Entity entity) {
        repository.save(entity);
    }

    // 其他操作方法
}