Displaying JPA Entity table data to thymeleaf view
Question
I have a JPA Entity table with id and name column. I want to display the name values to the thymeleaf view. Right now I am able to see the Entity object in the view but not the column values for name. Here's how I created the table and defined getters and setters:
@Entity
@Table(name = "Book")
public class Book extends AbstractPersistable<Long> {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Long id;
@Column(name = "name")
private String name;
public Long getID() {
return this.id;
}
public String getContent() {
return this.name;
}
public void setID (Long id) {
this.id = id;
}
public void setContent (String name) {
this.name = name;
}
}
From the controller this is how I am trying to set the content:
@Controller
@RequestMapping("/")
public class BookController {
@Autowired
private BookRepository bookRepository;
@RequestMapping("/addBook")
@ResponseBody
public String addBook(@RequestParam("name") String name) {
Book book = new Book();
book.setContent(name);
bookRepository.save(book);
return name;
}
@RequestMapping(value = "book", method = RequestMethod.GET)
public String books(Model model) {
model.addAttribute("books", bookRepository.findAll());
return "book";
}
}
The thymeleaf view template:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"
xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head lang="en">
<meta charset="UTF-8" />
<title>Books</title>
</head>
<body>
<h1>Books Database</h1>
<ul th:each="book : ${books}">
<li th:text="${book.name}"></li>
</ul>
</body>
</html>
When I add new books from the addBook page and visit the book page to see the book names then I get this error:
Exception evaluating SpringEL expression: "book.name". In the IDE console the error found as: org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'name' cannot be found on object of type 'sec.book.BookNames.
What could be wrong?
In the view if i use th:text="${book} then a list of Entity objects appears like this for each row from the table. This is what is shown:
Entity of type sec.helloworld.Book with id: null.
I just want the book names to show up not the objects. How am I supposed to do that?
1 answers
solution1
4 ACCPTED 2016-12-30 10:20:29
Yoor getter for name must be named getName() in order to be found by ExpressionLanguage(SpEL = Spring Expresion Language). The setter should be setName, too.
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