[springboot] Error creating bean with name 'entityManagerFactory' defined in class path resource

해결

Dto 패키지의 User클래스 완성하여 해결

package com.test.Dto;

import java.sql.Timestamp;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.hibernate.annotations.CreationTimestamp;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
@Entity
//@DynamicInsert //insert시에 null인 필드를 제외시켜준다.
public class User {
	@Id //Primary key
	@GeneratedValue(strategy = GenerationType.IDENTITY)//프로젝트에서 연결된 DB의 넘버링 전략을 따라간다.
	private int id;//시퀀스, auto_increment
	
	@Column(nullable = false, length = 100)
	private String username;
	
	@Column(nullable = false, length = 100) //123456=> 해쉬 (비밀번호 암호화)
	private String password;
	
	@Column(nullable = false, length = 50)
	private String email;
	
	//@ColumnDefault("'user'")
	@Enumerated(EnumType.STRING)
	private RoleType role; //Enum을 쓰는게 좋다. // admin, user, manager
	
	private String oauth; //kakao. google
	
	@CreationTimestamp //시간이 자동 입력
	private Timestamp createDate;
}

---

원인

application.yml 파일에서

MySQL 서버 연결시키고

JPA로 테이블 생성하게 설정한 뒤

User클래스 미완성하였더니

 

Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.test.Dto.User

이런 오류가 떴다.

---

미완성사례 1)

package com.test.Dto;

import java.sql.Timestamp;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.hibernate.annotations.CreationTimestamp;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;


@Entity
//@DynamicInsert //insert시에 null인 필드를 제외시켜준다.
public class User {
		private int id;//시퀀스, auto_increment
}

미완성사례 2)

package com.test.Dto;

import java.sql.Timestamp;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.hibernate.annotations.CreationTimestamp;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
@Entity
//@DynamicInsert //insert시에 null인 필드를 제외시켜준다.
public class User {
		private int id;//시퀀스, auto_increment
}

---

해결 예제)

package com.test.Dto;

import java.sql.Timestamp;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.hibernate.annotations.CreationTimestamp;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
@Entity
//@DynamicInsert //insert시에 null인 필드를 제외시켜준다.
public class User {
	@Id //Primary key
	@GeneratedValue(strategy = GenerationType.IDENTITY)//프로젝트에서 연결된 DB의 넘버링 전략을 따라간다.
	private int id;//시퀀스, auto_increment
	
	@Column(nullable = false, length = 100)
	private String username;
	
	@Column(nullable = false, length = 100) //123456=> 해쉬 (비밀번호 암호화)
	private String password;
	
	@Column(nullable = false, length = 50)
	private String email;
	
	//@ColumnDefault("'user'")
	@Enumerated(EnumType.STRING)
	private RoleType role; //Enum을 쓰는게 좋다. // admin, user, manager
	
	private String oauth; //kakao. google
	
	@CreationTimestamp //시간이 자동 입력
	private Timestamp createDate;
}

 

 

 

---

application.yml 참고 설정)

server:
  port: 8030
  servlet:
    context-path: /
    encoding:
      charset: UTF-8
      enabled: true
      force: true
    
spring:
  mvc:
    view:
      prefix: /WEB-INF/view/
      suffix: .jsp
      
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/testdb?serverTimezone=Asia/Seoul
    username: testuser
    password: 1111
    
  jpa:
    open-in-view: true
    hibernate:
      ddl-auto: create
      naming:
        physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
      use-new-id-generator-mappings: false
    show-sql: true
    properties:
      hibernate.format_sql: true

  jackson:
    serialization:
      fail-on-empty-beans: false
      
cos:
  key: cos1234