MySQL does not show the Users inside the database even if they are present

I have a strange problem with MySql. I did a small project with Spring-Boot MySql but when I try to add a new User to the database it gives me the success message but then going to see on mysql shell nothing appears in the database even if there is (because with the Get it actually finds the inserted user). Now I don't understand what the problem is. I attach the applications. properties of my Spring project.

every time I ask for Get it returns this MESSAGE:

D:\>curl -G localhost:8080/demo/first -d name=Biagio
{"name":"Biagio","timestamp":"2020-10-05T08:54:18.623+00:00","email":"biagio@gmal.com","surname":"Biagio2"}

My Database:

+----+------------------------+----------+----------------------------+---------+
| id | email                  | name     | stmp                       | surname |
+----+------------------------+----------+----------------------------+---------+
| 32 | mirketto90@yahoo.it    | Mirko    | 2020-10-01 12:31:47.827000 | NULL    |
| 36 | biagio@gmail.com       | Biagio   | 2020-10-01 16:31:31.687000 | Vaso    |
| 37 | biagio@gmail.com       | Biagio   | 2020-10-01 16:31:50.077000 | Vaso    |
| 38 | biagio@gmail.com       | Biagio   | 2020-10-01 18:35:45.992000 | Vaso    |
| 39 |                        | Mirko    | 2020-10-02 13:24:05.840000 | Vaso    |
| 40 | mirkoparioli@gmail.com | Mirko    | 2020-10-02 13:24:23.383000 | Vaso    |
| 47 | giovanni@gmal.com      | Giovanni | 2020-10-05 12:11:05.997000 | John    |
+----+------------------------+----------+----------------------------+---------+

I'm sure I'm using the right database (db_example), this is my

@SpringBootApplication
public class AccessingDataMysqlApplication {

  public static void main(String[] args) {
    SpringApplication.run(AccessingDataMysqlApplication.class, args);
  }

}

@RestController@RequestMapping("/demo")
public class MainController {

  @Autowired
  private UserService userService;

  @Transactional
  //@RequestMapping(value = "/add/", method = RequestMethod.POST)
  @PostMapping(path = "/demo/add")
  public String addNewUser(@PathVariable("name") String name, @PathVariable("email") String email, @PathVariable("surname") String surname) {

    UserDto n = new UserDto();
    n.setName(name);
    n.setSurname(surname);
    n.setEmail(email);
    userService.create(n);
    return "User Saved in DB";
  }

  @SuppressWarnings({
    "rawtypes",
    "unchecked"
  })
  //@RequestMapping(value = "/fetchUser/{name}", method = RequestMethod.GET)
  @GetMapping("/demo/first")
  public ResponseEntity < UserDto > fetchUser(@PathVariable("name") String name) {
    System.out.println(name);

    try {
      UserDto namefound = userService.findFirstByName(name);
      System.out.println("Name found");
      ResponseEntity < UserDto > user = new ResponseEntity < UserDto > (namefound, HttpStatus.OK);
      return user;
    } catch(NoResultException ne) {
      System.out.println("User not found");
      return new ResponseEntity("User not found with name : " + name, HttpStatus.NOT_FOUND);
    }

  }
}

1. For adding user to the database<br/>
   Modify your path in PostMapping

   From @PostMapping(path = "/demo/add")
   to @PostMapping(path = "/demo/add/{name}/{email}/{surname}")

   this is because in your addNewUser method you accept the name,email,surname as PathVariable.<br/>
   To bring a small clarity about the @PathVariable - it is a annotation that indicates which method parameter should be matched which URI template variable.

   In your case for example,<br/>
   {name} - Is the URI template variable
   String name in addNewUser method - Is the method parameter(which the alias name that you can use the {name} value in rest of the method)<br/>

   You must access the api like,

    localhost:8080/demo/add/Biagio/biagio@gmail.com/Vaso
   

2. To get user by name <br/>
   Modify path in GetMapping<br/>
   Similar to above explanation,

   From @GetMapping("/demo/first")
   to @GetMapping("/demo/first/{name}")

   You must access the api like,

    localhost:8080/demo/first/Biagio
   

I solved the problem myself. There was simply too much "private" when @Autowired on UserServiceImpl.The project is fair and well connected. For anything do not hesitate to write me.