Error creating bean, Injection of autowired dependencies failed - 500 Internal Server Error - spring

Question

I have created a new Spring project and I have some trouble when I run the application. I am new to Spring development and I thing that the annotations are not placed properly. Any detailed explanation would be great for me for better understating. I am currently reading Spring in action, but if any other book or tutorial seems more accurate, please leave me a comment :)[this is the error that I am getting - 500 Internal Server Error].
This is my project:
HelloWorldConfiguration
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
#EnableWebMvc
#ComponentScan(basePackages = "com.websystique.springmvc")
public class HelloWorldConfiguration {
#Bean(name="HelloWorld")
public ViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
HelloWordInitializer
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
public class HelloWorldInitializer implements WebApplicationInitializer {
public void onStartup(ServletContext container) throws ServletException {
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(HelloWorldConfiguration.class);
ctx.setServletContext(container);
ServletRegistration.Dynamic servlet = container.addServlet(
"dispatcher", new DispatcherServlet(ctx));
servlet.setLoadOnStartup(1);
servlet.addMapping("/");
}
}
HelloWorldController
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import service.StudentService;
import java.util.HashMap;
import java.util.Map;
#Configuration
#Controller
#ComponentScan(basePackages = "com.websystique.springmvc")
#RequestMapping("/")
public class HelloWorldController {
public HelloWorldController(){
}
#Autowired
private StudentService studentService;
private Map<String, Student> persoaneAdaugate = new HashMap<String, Student>();
#RequestMapping(method = RequestMethod.GET)
public String sayHello(ModelMap model) {
model.addAttribute("greeting", "Hello World from Spring 4 MVC");
return "welcome";
}
#RequestMapping(value = "/helloagain", method = RequestMethod.GET)
public String sayHelloAgain(ModelMap model) {
model.addAttribute("greeting", "Hello World Again, from Spring 4 MVC");
return "welcome";
}
/***
* #ModelAttribute = binds a method parameter or a method return value to a named model attribute and then exposes it to a web view.
* #param student
* #param result
* #param modelMap
* #return
* That is, #ModelAttribute methods are invoked before the controller methods annotated with #RequestMapping are invoked.
* The logic behind the sequence is that, the model object has to be created before any processing starts inside the controller methods.
*/
#RequestMapping(value="/", method = RequestMethod.POST)
public String addStudent(#ModelAttribute("addStudent") Student student, BindingResult result, ModelMap modelMap){
if(result.hasErrors()){
return "error";
}
else {
studentService.addStudent(student);
}
/*modelMap.addAttribute("nume", student.getNume());
modelMap.addAttribute("prenume", student.getPrenume());
persoaneAdaugate.put(student.getNume(), student);
System.out.println("Persoane adaugate: " + persoaneAdaugate +"\n");
System.out.println("nume: " + student.getNume()+" si prenume: " +student.getPrenume());
*/
return "success";
}
}
StudentDao
import com.websystique.springmvc.model.Student;
import org.springframework.stereotype.Component;
import java.util.List;
#Component
public interface StudentDao {
List<Student> getAllStudents();
void addStudent(Student student);
}
StudentDaoImpl
import com.websystique.springmvc.model.Student;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
#Repository("studentDao")
#Service
#Transactional
public class StudentDaoImpl implements StudentDao{
#Autowired
private SessionFactory sessionFactory;
public List<Student> getAllStudents() {
return null;
// return sessionFactory.getCurrentSession().createQuery("from Date").list();
}
public void addStudent(Student student) {
sessionFactory.getCurrentSession().saveOrUpdate(student);
}
}
Student
import org.hibernate.validator.constraints.NotEmpty;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import java.io.Serializable;
#Entity
#Table(name="DATE")
public class Student implements Serializable{
#Id
#NotEmpty
#Column(name="nume", unique=true, nullable=false )
private String nume;
#NotEmpty
#Column(name="prenume", nullable = false)
private String prenume;
protected Student(){
}
Student(String nume, String prenume){
this.prenume=prenume;
this.nume=nume;
}
public String getNume(){
return nume;
}
public void setNume(String nume){
this.nume=nume;
}
public String getPrenume(){
return prenume;
}
public void setPrenume(String prenume){
this.prenume=prenume;
}
#Override
public String toString(){
return "Numele adaugat: nume= " + nume +" si prenume= " +prenume;
}
}
StudentService
import com.websystique.springmvc.model.Student;
import org.springframework.stereotype.Component;
import java.util.List;
#Component
public interface StudentService {
List<Student> getAllStudents();
void addStudent(Student student);
}
StudentServiceImpl
import com.websystique.springmvc.dao.StudentDao;
import com.websystique.springmvc.model.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
#Service
#Transactional
public class StudentServiceImpl implements StudentService {
#Autowired
private StudentDao studentDao;
#Transactional
public List<Student> getAllStudents() {
return studentDao.getAllStudents();
}
public void addStudent(Student student) {
studentDao.addStudent(student);
}
}