Spring Runtime Error,No identifier specified for entity:

Question

New to java and spring. Tried creating an app but was unsuccessful.I have the following entity and controller in my app. But at runtime i get an error. I posted snippets for easier reading.

staff.java

@Data @Entity public class Staff { private int staff_id; private String staff_name; private String staff_email; @OneToMany(fetch = FetchType.LAZY, mappedBy = "staff") private List<VisitRequest> visitRequest; public String getStaff_name(){ return staff_name; } public void setStaff_name(String staff_name){ this.staff_name = staff_name; } public String getStaff_email(){ return staff_email; } public void setStaff_email(String staff_email){ this.staff_email = staff_email; } public int getStaff_id(){ return staff_id; } public void setStaff_id(int staff_id){ this.staff_id = staff_id; } }

StaffController.java

@Controller @RestController @RequestMapping("/staff/") public class StaffController{ @Autowired protected StaffRepository staffRepository; @GetMapping("/Staff") public List<Staff> getAllStaff() { return staffRepository.findAll(); } @GetMapping("/staff/{Staff_id}") public ResponseEntity<Staff> getStaffById(@PathVariable(value = "Staff_id") Long Staff_id) throws ResourceNotFoundException{ Staff staff = staffRepository.findById(Staff_id) .orElseThrow(() -> new ResourceNotFoundException("Employee not Found")); return ResponseEntity.ok().body(staff);

And the error that is thrown at runtime is

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfigura tion.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.Vportal.data.model.Staff

Please advice on what to do.

Does this answer your question? hibernate exception: org.hibernate.AnnotationException: No identifier specified for entity: com..domain.idea.MAE_MFEView — diogenesgg
– diogenesgg, Commented Dec 2, 2019 at 20:05

ldz · Accepted Answer · 2019-12-02 19:21:51Z

1

Your Staff entity lacks a member with an @Id annotation. This could be added to staff_id like follows:

@Data @Entity public class Staff { @Id private int staff_id; .... }

edited Dec 2, 2019 at 19:21

answered Dec 2, 2019 at 18:45

ldz

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3 Comments

B.obed Over a year ago

how do i do this?

B.obed Over a year ago

great but that led to this error.

nested exception is org.hibernate.MappingException: Could not determine type for: java.util.List, at table: staff, for columns: [org.hibernate.mapping.Column(visit_request)]

ldz Over a year ago

Which means you're one step further. Feel free to open a new question or search for how to properly map @OneToMany relationships.

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