Issue with reading request body using spring boot

I am new to Java and Springboot, I am trying to create simple REST API to insert employee record into mysql database. Getting following error

@RequestBody => Employee [id=0, firstName=null, lastName=null, email=null]
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.dao.DataIntegrityViolationException: not-null property references a null or transient value : com.saa.springboot.model.Employee.firstName] with root cause

org.hibernate.PropertyValueException: not-null property references a null or transient value : com.saa.springboot.model.Employee.firstName
	at org.hibernate.engine.internal.Nullability.checkNullability(Nullability.java:111) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]

Employee Class:

@Data
@Entity
@Table(name="employees")
public class Employee {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private long id;
	
	@Column(name = "first_name", nullable = false)
	private String firstName;
	
	@Column(name = "last_name")
	private String lastName;
	
	@Column(name = "email")
	private String email;
}

EmployeeController

package com.saa.springboot.controller;

import java.util.List;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.saa.springboot.model.Employee;
import com.saa.springboot.service.EmployeeService;


@RestController
@RequestMapping("/api/employees")
public class EmployeeController {
	
	private EmployeeService employeeService;

	public EmployeeController(EmployeeService employeeService) {
		super();
		this.employeeService = employeeService;
	}
	
	@PostMapping()
	public ResponseEntity<Employee> saveEmployee(@RequestBody Employee employee) {
		System.out.println("@RequestBody => " + employee.toString());
		return new ResponseEntity<Employee>(employeeService.saveEmployee(employee), HttpStatus.CREATED);
	}
	
}

Application Properties:

spring.datasource.url = jdbc:mysql://localhost:3306/ems_db?useSSL=false
spring.datasource.username = root
spring.datasource.password = pwd
spring.jpa.database-platform = org.hibernate.dialect.MySQLDialect
spring.jpa.generate-ddl = true
spring.jpa.hibernate.ddl-auto = update

Curl Request:

curl -i -H "Accept: application/json" -H "Content-Type:application/json" -X POST --data "{\"firstName\": \"john\", \"lastName\": \"cena\"}" "http://localhost:8080/api/employees"

From the println statement, we can clearly see field values(firstName, lastName and email) read as null using @RequestBody

@RequestBody => Employee [id=0, firstName=null, lastName=null, email=null]

I am not sure what I am missing here, I have tried with Postman as well without any luck, same error.

Any guidance is must appreciated.

The issue was with Eclipse setup. The lombok library was not installed for eclipse due to this @Data annotation was not working on Employee class and hence no getters and setters. To solve, I installed lombok in eclipse installation folder and restarted it.