Spring boot - Post function get error while Get and Delete function still be ok - spring

Question

I'm newly get to spring framework and handing-on basic steps however I got a error which didn't where it come from. I just use Postman to communicate with data. Get and delete function were smooth, however Post and Put didn't.
This is my code:
Class EmployeeRepo
package com.employee.demo.dao;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;
import com.employee.demo.model.Employee;
public interface EmployeeRepo extends JpaRepository<Employee, Integer>{
}
Class Employee
package com.employee.demo.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
#Entity
public class Employee {
#Id
private int id;
private String name;
private double salary;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public String toString() {
return "Employee with [ID: " + id + ", name: " + name + " and salary: " + salary + "]";
}
}
Class EmployeeController
package com.employee.demo.controller;
import java.util.List;
import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.employee.demo.dao.EmployeeRepo;
import com.employee.demo.model.Employee;
#RestController
public class EmployeeController {
#Autowired
EmployeeRepo repo;
#RequestMapping("/")
public String home() {
return "home.jsp";
}
#DeleteMapping("/employee/{id}")
public String deleteEmployee(#PathVariable int id) {
Employee empl = repo.getOne(id);
repo.delete(empl);
return "deleted";
}
#PostMapping("/employee")
public Employee addEmployee(Employee empl) {
repo.save(empl);
return empl;
}
#GetMapping(path = "/employees")
public List<Employee> getEmployees() {
return repo.findAll();
}
#PutMapping(path = "/employee", consumes = {"application/json"})
public Employee saveOrUpdateEmployee(#RequestBody Employee empl) {
repo.save(empl);
return empl;
}
#RequestMapping("/employee/{id}")
public Optional<Employee> getEmployee(#PathVariable int id) {
return repo.findById(id);
}
}
And this is what I got from postman for Post query

Answer 1

Problem is with your POST method (addEmployee)- Whatever you are sending in request body is not accepted by addEmployee method. You can verify in DB after a POST call.
employee table will have data something like
Use #RequestBody annotation with argument as:
public Employee addEmployee(#RequestBody Employee empl)
And it will work as expected.