I'm making simple Spring MVC library app, using Freemarker, MySQL and Hibernate, i created form for adding new book to the library, it's code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Create new user</title>
</head>
<body>
<form name="booker" action="/newBook" method="post" >
<p>Name</p>
<input title="Name" type="text" name="name">
<p>Desc</p>
<input title="Email" type="text" name="desc">
<p>Author</p>
<input title="Age" type="text" name="aut">
<p>Year</p>
<input title="Age" type="text" name="year">
<input type="submit" value="OK">
</form>
</body>
</html>
Also i have Controller, BookDAO, BookService and Book entity
Controller:
@Controller
@RequestMapping("/")
public class BookController {
@Autowired
private BookService service;
@GetMapping("/books")
public String viewAll(Model model){
model.addAttribute("books",service.findAll());
return "books";
}
@GetMapping("/addBook")
public String addBook(){
return "createBook";
}
@PostMapping("/newBook")
public String newBooks(@ModelAttribute("booker") Book book){
service.add(book);
return "redirect:/books";
}
}
Entity:
@Table(name = "booker")
@Entity
public class Book {
private int id;
@Id
@GeneratedValue(strategy= GenerationType.AUTO)
@Column(name = "idbooker")
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
private String name;
private String desc;
private String aut;
private int year;
@Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Column(name="desc")
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
@Column(name = "aut")
public String getAut() {
return aut;
}
public void setAut(String author) {
this.aut = author;
}
@Column(name = "year")
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
}
When i try to post new book, i get this exception, database columns' names are same can somebody tell how to fix it, ty. 
