UnsatisfiedDependencyException: Spring MVC project fails to start because of Unsatisfied Dependency - spring

Question

I am trying to start a spring mvc application,
and keep receiving the following error which I cannot solve
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerController': Unsatisfied dependency expressed through field 'customerDAO'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerDAOImpl': Unsatisfied dependency expressed through field 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/spring-mvc-crud-demo-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister
And this is only the first error shown in the console.
Well, I am trying to understand the first part of the whole line, which is
Unsatisfied dependency expressed through field customerDAO Unsatisfied dependency expressed through field customerDAO. It is giving a 500 server error. I cannot find any similar solution, neither see where the error is. Here are my source code files so far:
the entity class
package com.wcorp.springdemo.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="customer")
public class Customer {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name="id")
private int id;
#Column(name="first_name")
private String firstName;
#Column(name="last_name")
private String lastName;
#Column(name="email")
private String email;
public Customer() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
#Override
public String toString() {
return "Customer [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + ", email=" + email + "]";
}
}
the dao Interface and its implementation
import com.wcorp.springdemo.entity.Customer;
public interface CustomerDAO {
public List<Customer> getCustomers();
}
import javax.transaction.Transactional;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.wcorp.springdemo.entity.Customer;
#Repository
public class CustomerDAOImpl implements CustomerDAO {
// need to inject the session factory
#Autowired
private SessionFactory sessionFactory;
#Override
#Transactional
public List<Customer> getCustomers() {
// get the current hibernate session
Session currentSession = sessionFactory.getCurrentSession();
// create a query
Query<Customer> theQuery =
currentSession.createQuery("from Customer", Customer.class);
// execute query and get result list
List<Customer> customers = theQuery.getResultList();
// return the results
return customers;
}
}
The controller
package com.wcorp.springdemo.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.wcorp.springdemo.dao.CustomerDAO;
import com.wcorp.springdemo.entity.Customer;
#Controller
#RequestMapping("/customer")
public class CustomerController {
// need to inject the customer dao
#Autowired
private CustomerDAO customerDAO;
#RequestMapping("/list")
public String listCustomers(Model theModel) {
// get customers from the dao
List<Customer> theCustomers = customerDAO.getCustomers();
// add the customers to the model
theModel.addAttribute("customers", theCustomers);
return "list-customers";
}
}
Here is the spring config file
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Add support for component scanning -->
<context:component-scan base-package="com.wcorp.springdemo" />
<!-- Add support for conversion, formatting and validation support -->
<mvc:annotation-driven/>
<!-- Define Spring MVC view resolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- Step 1: Define Database DataSource / connection pool -->
<bean id="myDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="com.mysql.cj.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false&serverTimezone=UTC" />
<property name="user" value="springstudent2" />
<property name="password" value="springstudent2" />
<!-- these are connection pool properties for C3P0 -->
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxIdleTime" value="30000" />
</bean>
<!-- Step 2: Setup Hibernate session factory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan" value="com.wcorp.springdemo.entity" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- Step 3: Setup Hibernate transaction manager -->
<bean id="myTransactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- Step 4: Enable configuration of transactional behavior based on annotations -->
<tx:annotation-driven transaction-manager="myTransactionManager" />
</beans>
the project build path, jars and tomcat server is fine eclipse is not complaining, spring version is 5.0.2, hibernate version 5.2.17

Answer 1

I found a similar problem described here
Please try to run under Java 8. The problem comes that you use Java 11.
Most of the frameworks are not compatible and are not fully tested on Java 11.