Error: Action : Consider defining a bean of type "package" in your configuration - spring

Question

the following error I am getting :
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APPLICATION FAILED TO START
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Description:
Field employeeDAO in com.example.demo.controller.EmployeeController required a bean of type 'com.example.demo.dao.EmployeeDAO' that could not be found.
Action:
Consider defining a bean of type 'com.example.demo.dao.EmployeeDAO' in your configuration.
my folder structure:
below are the files:
1.
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
#SpringBootApplication
#EnableJpaRepositories
public class RestCrudDemo1Application {
public static void main(String[] args) {
SpringApplication.run(RestCrudDemo1Application.class, args);
}
}
2.
package com.example.demo.controller;
import java.util.List;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.demo.dao.EmployeeDAO;
import com.example.demo.model.Employee;
#RestController
#RequestMapping("/company")
public class EmployeeController {
#Autowired
EmployeeDAO employeeDAO;
#PostMapping ("/employee")
public Employee createEmployee(#Valid #RequestBody Employee emp){
return employeeDAO.save(emp);
}
#GetMapping ("/findAll")
public List<Employee> findAll(){
return employeeDAO.findAll();
}
#GetMapping("/employees/{id}")
public ResponseEntity<Employee> getEmployeeById(#PathVariable(value = "id") Long empid){
Employee emp = employeeDAO.findOne(empid);
if (emp==null){
return ResponseEntity.notFound().build();
}
return ResponseEntity.ok().body(emp);
}
#PutMapping("/employees/{id}")
public ResponseEntity<Employee> updateEmployee(#PathVariable(value = "id") Long empid, #Valid #RequestBody Employee empDetails){
Employee emp = employeeDAO.findOne(empid);
if (emp==null){
return ResponseEntity.notFound().build();
}
emp.setName(empDetails.getName());
emp.setDesignation(empDetails.getExpertise());
emp.setExpertise(empDetails.getExpertise());
Employee updateEmployee = employeeDAO.save(emp);
return ResponseEntity.ok().body(updateEmployee);
}
#DeleteMapping("/employees/{id}")
public ResponseEntity<Employee> deleteEmployee(#PathVariable(value = "id") Long empid){
Employee emp = employeeDAO.findOne(empid);
if (emp==null){
return ResponseEntity.notFound().build();
}
employeeDAO.delete(emp);
return ResponseEntity.ok().build();
}
}
3.
package com.example.demo.dao;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import com.example.demo.model.Employee;
import com.example.demo.repository.EmployeeRepository;
public class EmployeeDAO {
#Autowired
EmployeeRepository employeeRepository;
public Employee save(Employee emp){
return employeeRepository.save(emp);
}
public List<Employee> findAll(){
return employeeRepository.findAll();
}
public Employee findOne(Long empid){
return employeeRepository.findOne(empid);
}
public void delete(Employee emp){
employeeRepository.delete(emp);
}
}
4.
package com.example.demo.model;
import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotBlank;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;
#Entity
#Table(name = "Employees")
#EntityListeners(AuditingEntityListener.class)
public class Employee {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private long Id;
#NotBlank
private String name;
#NotBlank
private String designation;
#NotBlank
private String expertise;
#NotBlank
#Temporal(TemporalType.TIMESTAMP)
#LastModifiedDate
private Date createdAt;
public long getId() {
return Id;
}
public void setId(long id) {
Id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDesignation() {
return designation;
}
public void setDesignation(String designation) {
this.designation = designation;
}
public String getExpertise() {
return expertise;
}
public void setExpertise(String expertise) {
this.expertise = expertise;
}
public Date getCreatedAt() {
return createdAt;
}
public void setCreatedAt(Date createdAt) {
this.createdAt = createdAt;
}
}
5.
package com.example.demo.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import com.example.demo.model.Employee;
public interface EmployeeRepository extends JpaRepository<Employee, Long> {
public Employee findOne(Long empid);
}

Answer 1

From the error, I get to know that employee dao bean has not been created for autowiring into the controller.
By analysing your employee dao class, you forgot to annotate with #Repository due to which bean has not been created by context scanning.
Annotate empoyeedao class with #Repository. It should solve your problem.