Bean can not resolve jpa /hibernate

Nov 8 '20 Comments: 1 Answers: 0

-1

enter image description hereI'm trying to do a blog - spring boot application using the Hibernate JPA implementation. My problem is that I can't use the mapping , You can see the error message I get in the two pictures below.enter image description here

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[dineshftu]

Please let me see your post entity and person entity classes to see whether i can resolve this for you.

[Sonia-dev]

package com.example.demo.model;

import javax.persistence.*;
import javax.persistence.OneToMany;
import java.util.Collection;
import java.util.Date;
import java.util.List;

@Entity
public class Post {
public long getId() {
return id;
}

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

public void setTitle(String title) {
    this.title = title;
}

public void setBody(String body) {
    this.body = body;
}

public void setCreatedDate(Date createdDate) {
    this.createdDate = createdDate;
}

public String getTitle() {
    return title;
}

public String getBody() {
    return body;
}

public Date getCreatedDate() {
    return createdDate;
}

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
private String title;
private String body;
private Date createdDate;

public List<Comment> getComments() {
    return comments;
}

public void setComments(List<Comment> comments) {
    this.comments = comments;
}
@OneToMany(mappedBy = "post", cascade = CascadeType.REMOVE)
private List<Comment>comments;

}

[Sonia-dev]

package com.example.demo.model;

import javax.persistence.*;
import java.util.Collection;
@Table
@Entity
public class Person {
@id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String username;
public String getEmail() {
return email;
}

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

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

private String email;
private String password;
public Person() {
}

public Person(String name) {
    this.username = name;
}

public Long getId() {
    return id;
}

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

public String getName() {
    return username;
}

public void setName(String name) {
    this.username = name;
}

}

[dineshftu]

I have gone through the classes which I asked, and I think the issue is the referenceColumn attribute. In your post and person entities you dont have any column name as post_id and person_id. You only have id column in both. So you should be adding id instead of post_id and person_id to the referenceColumn in Comment class. Because jpa is looking for the exact column name in other entities. I think this will work.