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

문제 파악

Spring boot 최초 실행 시 DB 관련 dedependencies 추가 했는데 DB 접속 정보를 추가 하지 않으면 발생하는 오류.

로그 내용

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-11-18 15:37:06.776 ERROR 17616 --- [ restartedMain] 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).

해결 방법

build.gradle

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.boot:spring-boot-starter-data-jdbc'
    // implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-hateoas'
    implementation 'org.springframework.boot:spring-boot-starter-security'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    // implementation 'org.liquibase:liquibase-core'
    // implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.1.4'
    compileOnly 'org.projectlombok:lombok'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    runtimeOnly 'org.postgresql:postgresql'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testImplementation 'org.springframework.restdocs:spring-restdocs-mockmvc'
    testImplementation 'org.springframework.security:spring-security-test'
}

application.yaml 수정

spring:
 datasource:
   url: jdbc:postgresql://localhost:5432/postgres
   username : postgres
   password : 1234
   driver-class-name: org.postgresql.Driver