因此，我一直在使用百里香，spring和h2数据库在Java上创建医院系统。我有一个函数，该函数应该与以前的医生和患者进行新的约会，但是我的h2数据库未显示其ID，只是显示为空。
这是控制器中的功能
@PostMapping(value="/insertNewAppointment")
public String insertNewAppointmentPost(Appointment appointment, Patient patient, Doctor doctor)
{
System.out.println(patient.getName());
System.out.println(patient.getSurname());
System.out.println(doctor.getName());
System.out.println(doctor.getSurname());
System.out.println();
Patient newPatient = patientRepo.findByNameAndSurname (patient.getName(), patient.getSurname());
System.out.println(patient);
Doctor newDoctor = doctorRepo.findByNameAndSurname (doctor.getName(), doctor.getSurname());
System.out.println(doctor);
Appointment newAppointment = new Appointment(appointment.getTime(), newPatient, newDoctor);
appointmentRepo.save(newAppointment);
return "redirect:/showAllDoctors";
}
这是课程
患者
@Entity
@Table (name = "PatientTable")
public class Patient {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id_P")
private int id_P;
@Column(name = "Name")
private String name;
@Column(name = "surname")
private String surname;
@Column(name = "isHospitalised")
private boolean isHospitalised;
@OneToMany (mappedBy = "patient")
private Collection<Appointment> allAppointmentsP;
@OneToOne
@JoinColumn (name = "u_ID")
private User user;
医生
@Entity
@Table (name = "DoctorTable")
public class Doctor {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id_D")
private int id_D;
@Column(name = "name")
private String name;
@Column(name = "surname")
private String surname;
@Column(name = "officeNumber")
private short officeNum;
@OneToOne
@JoinColumn (name = "id_U")
private User user;
@OneToMany (mappedBy = "doctor")
private Collection<Appointment> allAppointmentsD;
约定
@Entity
@Table (name = "AppointmentTable")
public class Appointment {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "app_ID")
private int app_ID;
@Column(name = "time")
private String time;
@Cascade(value = { CascadeType.ALL })
@ManyToOne
@JoinColumn (name = "id_P")
private Patient patient;
@Cascade(value = { CascadeType.ALL })
@ManyToOne
@JoinColumn (name = "id_D")
private Doctor doctor;
医生和患者回购仅获得此行
Doctor findByNameAndSurname(String name, String surname);和insertnewappointment html文件
<!DOCTYPE HTML>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<body>
<h2>Add a new appointment</h2>
<form action="#" th:action = "@{/insertNewAppointment}" th:object = "${appointment}" method = "post">
Time (DD-MMM-YYYY HH:mm)
<input type = "text" th:field = "*{time}" /> <br>
Patient Name
<input type = "text" th:field = "*{patient.name}" /> <br>
Patient Surname
<input type = "text" th:field = "*{patient.surname}" /> <br>
Doctor Name
<input type = "text" th:field = "*{doctor.name}" /> <br>
Doctor Surname
<input type = "text" th:field = "*{doctor.surname}" /> <br>
<input type = "submit" value = "Add new appointment" />
</form>
</body>
</html>
I posted the lines i got in repos. This is the function that loads the data in, with this everything is alright, the id show up as they should on the h2 database. ```@GetMapping(value="/testingData")
public String testing()
{
User u1 = new User("Janis", "123");
User u2 = new User("Juris", "321");
User u3 = new User("Jana", "jana123");
User u4 = new User("Peteris", "peteris123");
User u5 = new User("Matiss", "134");
User u6 = new User("Jana", "JanA");
userRepo.save(u1);
userRepo.save(u2);
userRepo.save(u3);
userRepo.save(u4);
userRepo.save(u5);
userRepo.save(u6);
Patient p1 = new Patient("Janis", "Berzins", true, u1);
Patient p2 = new Patient("Juris", "Kalnins", true, u2);
Patient p3 = new Patient("Jana", "Jauka", true, u3);
patientRepo.save(p1);
patientRepo.save(p2);
patientRepo.save(p3);
Doctor d1 = new Doctor("Peteris", "Krumins", (short) 101, u4);
Doctor d2 = new Doctor("Matiss", "Ozolins", (short) 102, u5);
Doctor d3 = new Doctor("Liene", "Karklina", (short)103, u6);
doctorRepo.save(d1);
doctorRepo.save(d2);
doctorRepo.save(d3);
Appointment a1 = new Appointment("26-JUN-2019 13:30", p2, d1);
Appointment a2 = new Appointment("30-JUN-2019 10:15", p1, d3);
Appointment a3 = new Appointment("02-JUL-2019 15:45", p3, d2);
appointmentRepo.save(a1);
appointmentRepo.save(a2);
appointmentRepo.save(a3);
return "ok";```
最佳答案
尝试将id的类型更改为long和@GeneratedValue(strategy = GenerationType.SEQUENCE