인프런 커뮤니티 질문&답변

제가 Express를 잘 다루지 못해 SpringBoot로 RDS 연결을 하려고 하는데 계속 오류가 발생합니다.

DBeaver까진 잘 연동되고 seohaen이라는 DB도 새로 만들어주었습니다.

SpringBoot에서도 DB는 잘 연동되는데 이상하게 Run만 하면 오류가 발생하네요

혹시 몰라서 yml 파일과 build.gradle 첨부합니다!

application.yml

server:
  port: 80

management:
  endpoints:
    web:
      exposure:
        include: health

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://seohaen-db.cti8ki...(RDS 엔드포인트 넣었습니다)3306/seohaen(DBeaver에서 새로 만든 DB이름을 넣었습니다.)
    username: RDS에서 설정한 이름
    password: RDS에서 설정한 비밀번호

  jpa:
    show-sql: true
    hibernate:
      ddl-auto: update
    properties:
      hibernate:
        format_sql: true
    open-in-view: false
    database-platform: org.hibernate.dialect.MySQL8Dialect

build.gradle

dependencies {
    // 헬스 체크를 위한 라이브러리
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
    //RDS
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-jdbc'

    runtimeOnly 'com.mysql:mysql-connector-j'

    testImplementation 'org.springframework.boot:spring-boot-starter-test'

}

오류내용

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.

2025-06-04T21:38:09.446+09:00 ERROR 6699 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

***************************

APPLICATION FAILED TO START

***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Action:

Consider the following:

If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.

If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).