findByForeign key in Spring boot - spring-boot

Question

I have added a foreign key as such:
#ManyToOne
#JoinColumn
private UserEntity userEntity;
And my table has these columns:
CREATE TABLE `web_course` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`coursename` varchar(255) DEFAULT NULL,
`description` varchar(255) DEFAULT NULL,
`user_entity_user_id` bigint(20) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `FK6eys4s4qx87rxo0ha68q05oc8` (`user_entity_user_id`),
CONSTRAINT `FK6eys4s4qx87rxo0ha68q05oc8` FOREIGN KEY (`user_entity_user_id`) REFERENCES `web_user` (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
I would like to create a method to findByUserId in:
#Repository
public interface CourseRepository extends JpaRepository<CourseEntity, Long> {
I have tried several combinations in vain:
public CourseEntity findByUserId(int user_id)
public CourseEntity findByUserEntityUserId(int user_id)
public CourseEntity findBy_User_entity_user_id(int user_id)
I read that there is a naming convention but I can't seem to find the correct convention since I am getting:
Error creating bean with name 'courseController': Unsatisfied dependency expressed through field 'courseRepository';
Course class:
package com.finaly.projectback.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#Entity
#Table(name = "web_course")
#JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
public class CourseEntity {
#ManyToOne
#JoinColumn
private UserEntity userEntity;
public UserEntity getUserEntity() {
return userEntity;
}
public void setUserEntity(UserEntity userEntity) {
this.userEntity = userEntity;
}
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "id", updatable = false, nullable = false)
private long id;
#Column(name = "coursename")
private String coursename;
#Column(name = "description")
private String description;
public CourseEntity() {
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getCoursename() {
return coursename;
}
public void setCoursename(String coursename) {
this.coursename = coursename;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public CourseEntity(UserEntity userEntity, long id, String coursename, String description) {
super();
this.userEntity = userEntity;
this.id = id;
this.coursename = coursename;
this.description = description;
}
#Override
public String toString() {
return "CourseEntity [userEntity=" + userEntity + ", id=" + id + ", coursename=" + coursename + ", description="
+ description + "]";
}
}
Can someone point me in the right direction please?

Answer 1

Following code should work:
public CourseEntity findByUserEntity_UserId(int user_id)
Check logs to see if the course repository is instantiated or not. Error indicates controller can'be created because of the dependency issue.
Error creating bean with name courseController: Unsatisfied dependency expressed through field courseRepository