0
votes

I am trying to create e-commerce in spring. After including "Hibernate" and "H2" database in my project, I get the error. The error is given below. I am trying very much but not found any solution.

Error:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.home.dao.ProductDao com.home.controller.homeController.productDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.home.dao.impl.ProductDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution

applicationContext.xml

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="org.h2.Driver" />
    <property name="url" value="jdbc:h2:~/test" />
    <property name="username" value="sa" />
    <property name="password" value="" />
</bean>

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.format_sql">true</prop>
        </props>
    </property>
    <property name="packagesToScan">
        <list>
            <value>com.home</value>
        </list>
    </property>
</bean>

<bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean> 

home-servlet.xml

<context:component-scan base-package="com.home">
    <context:include-filter type="aspectj" expression="com.home.*" />
</context:component-scan>

<mvc:annotation-driven />

<bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
        <value>/WEB-INF/</value>
    </property>
    <property name="suffix">
        <value>.jsp</value>
    </property>

</bean>

<mvc:resources mapping="/resources/**"
    location="/WEB-INF/resources/" cache-period="31556926" />


<tx:annotation-driven />

web.xml

<display-name>Archetype Created Web Application</display-name>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/home-servlet.xml,
        /WEB-INF/applicationContext.xml
    </param-value>
</context-param>

<servlet>
    <servlet-name>home</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>home</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

homeController.java

@Controller
@Configuration
public class homeController {

@Autowired
private ProductDao productDao;

@RequestMapping("/")
public String home() {
    return "views/home";
}


@RequestMapping("/productList")
public String getProducts(Model model) {
    List<Product> products = productDao.getAllProducts();
    model.addAttribute("products", products);

    return "views/productList";
}

@RequestMapping("/productList/viewProduct/{productId}")
public String viewProduct(@PathVariable String productId, Model model) throws IOException{

    Product product = productDao.getProductById(productId);
    model.addAttribute(product);

    return "views/viewProduct";
}

}

ProductDaoImpl.java

@Repository
@Transactional
public class ProductDaoImpl implements ProductDao {

@Autowired
private SessionFactory sessionFactory;

public void addProduct(Product product) {
    Session session = sessionFactory.getCurrentSession();
    session.saveOrUpdate(product);
    session.flush();
}

public Product getProductById(String id) {
    Session session = sessionFactory.getCurrentSession();
    Product product = (Product) session.get(Product.class, id);
    session.flush();

    return product;
}

public List<Product> getAllProducts() {
    Session session = sessionFactory.getCurrentSession();
    Query query = session.createQuery("from Product");
    List<Product> products = query.list();
    session.flush();

    return products;
}

public void deleteProduct (String id) {
    Session session = sessionFactory.getCurrentSession();
    session.delete(getProductById(id));
    session.flush();
}

}

Product.java Code:

@Entity

public class Product {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private String productId;
private String productName;
private String productCategory;
private String productDescription;
private double productPrice;
private String productCondition;
private String productStatus;
private int unitInStock;
private String productManufacturer;

public String getProductId() {
    return productId;
}

public void setProductId(String productId) {
    this.productId = productId;
}

public String getProductName() {
    return productName;
}

public void setProductName(String productName) {
    this.productName = productName;
}

public String getProductCategory() {
    return productCategory;
}

public void setProductCategory(String productCategory) {
    this.productCategory = productCategory;
}

public String getProductDescription() {
    return productDescription;
}

public void setProductDescription(String productDescription) {
    this.productDescription = productDescription;
}

public double getProductPrice() {
    return productPrice;
}

public void setProductPrice(double productPrice) {
    this.productPrice = productPrice;
}

public String getProductCondition() {
    return productCondition;
}

public void setProductCondition(String productCondition) {
    this.productCondition = productCondition;
}

public String getProductStatus() {
    return productStatus;
}

public void setProductStatus(String productStatus) {
    this.productStatus = productStatus;
}

public int getUnitInStock() {
    return unitInStock;
}

public void setUnitInStock(int unitInStock) {
    this.unitInStock = unitInStock;
}

public String getProductManufacturer() {
    return productManufacturer;
}

public void setProductManufacturer(String productManufacturer) {
    this.productManufacturer = productManufacturer;
}

}

ProductDao.java Code: public interface ProductDao {

void addProduct(Product product);

Product getProductById(String id);

List<Product> getAllProducts();

void deleteProduct(String id);

}

Project Structure or Directory Image: Project Structure or Directory at my Eclipse Oxygen IDE

2
Can you share the directory structure and ProductDao as well?Nicholas K
#Nicholas K, please see the update post, where I have added the ProductDao .java code and check the image of directory structure of my project. Tanks for your comment.S. Rayhan Kabir

2 Answers

0
votes

ProductDao is not a bean..That's why. Repository, controller, service are all of type of bean. Make sure this is which type of bean.....Thank you.

0
votes

Finally, I have found my own problems when I use IntelliJ IDEA IDE. Problems are given bellow:

  1. My problem have occurred at pom.xml file. Here, I have used hibernate-core latest version (5.4.0.Final) dependency which is not support import org.hibernate.Query; package and also not support Query query = session.createQuery("from Product"); and Product product = (Product) session.get(Product.class, id); codes at ProductDaoImpl.java class.

  2. I have also used latest version of spring-webmvc, spring-core and spring-orm dependency at pom.xml file. For that it occurs version conflict.

Solution:

  1. Forget Eclipse and avoid it. Please use IntelliJ IDEA. This is very user friendly IDE for Java Spring MVC framework and also show what wrong you do.

  2. Create new project and used hibernate-core 4.0.1.Final version dependency at pom.xml file and also used 4.2.8.RELEASE version of own, spring-core and spring-orm dependencies.

    1. Remove import org.hibernate.Query.query; package from ProductDaoImpl.java class and put import org.hibernate.Query package.

Thank you :)