Question

首先，我会说这个应用程序运行时，它在我想要测试的内容中被破坏了。我基本上想通过hibernate显示来自MySql的所有已保存实体，并将其打印在带有百里香叶的Web浏览器中。我无法弄清楚我做错了什么。没有例外，但DAO.count显示为0.感谢您的帮助。

DAO：

Authorization

控制器：

@Repository("CustomerDAO")
@Transactional
public interface CustomerDAO extends CrudRepository<Customer, Integer> {

    public List<Customer> findAll();
    public long count();
}

实体：

@Controller
public class CustomerController {


    private CustomerDAO customerDAO;

    @Autowired
    public void setCustomerDAO(CustomerDAO customerDAO) {
        this.customerDAO = customerDAO;
    }

    private SessionFactory sessionFactory;

    @RequestMapping("/")
    public String listCustomers(Model model){
        long test = customerDAO.count();
        model.addAttribute("answer", test);

        List<Customer> customers = customerDAO.findAll();
        model.addAttribute("customers", customers);
        return "home";
    }

}

HTML / thymeleaf：

@Entity
@Table(name = "customer")
public class Customer implements Serializable {

    @Column(name = "id")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Id
    private int id;

    @Column(name = "first_name")
    private String firstName;

    @Column(name = "last_name")
    private String lastName;

    @Column(name = "email")
    private String email;

    public Customer(){}

    @Override
    public String toString() {
        return "Customer{" +
                "id=" + id +
                ", firstName='" + firstName + '\'' +
                ", lastName='" + lastName + '\'' +
                ", email='" + email + '\'' +
                '}';
    }

    public Customer(String firstName, String lastName, String email){
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;

    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

Application.properties：

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head lang="en">
    <title>Title</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
</head>
<body>
<h3 th:text="${answer}"></h3>
<div th:each="customer: ${customers}">
<h3 th:text="${customer.firstName}">This didnt work</h3>
</div>
</body>
</html>

打印跟踪：

spring.datasource.url = jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false
spring.datasource.username=root
spring.datasource.password=metalgear3
spring.datasouce.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.hibernate.show-sql=true
spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQL55Dialect

spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
entitymanager.packagesToScan = com.luv2code.entity.Customer

为什么我的休眠类DAO类不包含任何实体？

0 个答案: