Connection refused from SprigBoot app to weblogic

I'm trying to consume a REST service from Postman by deploying a war arctifact in weblogic but always have the same error

> "Error: connect ECONNREFUSED 127.0.0.1:8021"

There's no problem with my IP or port.

This is my application.properties file

and this my request

finally, this is my Controller class

package com.app.controller;

import java.util.List;
import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import com.app.model.Employee;
import com.app.repo.EmployeeRepo;

@RestController
public class EmployeeController {

	@Autowired
	private EmployeeRepo repo;

	@PostMapping("/save")
	public ResponseEntity<String> saveEmployee(@RequestBody Employee employee) {
		try {
			repo.save(employee);
		} catch (Exception e) {
			return new ResponseEntity<String>("Error al insertar", HttpStatus.INTERNAL_SERVER_ERROR);
		}
		return new ResponseEntity<String>("Insertado exitosamente", HttpStatus.OK);
	}
}

Any help, please?

If your spring boot application is deployed in weblogic as a war file, then it would be using the weblogic ports, not what you have configured in your application.properties file.