인프런 커뮤니티 질문&답변

아래와 같은 에러가 발생하여 application.properties를 application.yml로 바꾸어봤지만 같은에러가납니다.

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APPLICATION FAILED TO START

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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).

아래 코드는 application.yml내용입니다.

spring:
  datasource:
    driver-class-name: org.mariadb.jdbc.Driver
    url: jdbc:mariadb://localhost:3306/apidb
    username: apidbuser
    password: apidbuser
  jpa:
    hibernate:
      ddl-auto: update
    properties:
      hibernate:
        format_sql: true
    show-sql: true
logging:
  level:debug

아래코드는 build.gradle 내용입니다.

buildscript {
    ext {
        queryDslVersion = "5.0.0"
    }
}

plugins {
    id 'java'
    id 'org.springframework.boot' version '3.0.13'
    id 'io.spring.dependency-management' version '1.1.4'
}

group = 'org.mail'
version = '0.0.1-SNAPSHOT'

java {
    sourceCompatibility = '17'
}

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    compileOnly 'org.projectlombok:lombok'
    testCompileOnly'org.projectlombok:lombok'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    runtimeOnly 'org.mariadb.jdbc:mariadb-java-client'
    annotationProcessor 'org.projectlombok:lombok'
    testAnnotationProcessor 'org.projectlombok:lombok'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    implementation "com.querydsl:querydsl-jpa:${queryDslVersion}:jakarta"
    annotationProcessor(
            "jakarta.persistence:jakarta.persistence-api",
            "jakarta.annotation:jakarta.annotation-api",
            "com.querydsl:querydsl-apt:${queryDslVersion}:jakarta")
}

tasks.named('bootBuildImage') {
    builder = 'paketobuildpacks/builder-jammy-base:latest'
}

tasks.named('test') {
    useJUnitPlatform()
}
compileJava.dependsOn('clean')

맨위에 에러 난 후 이하 반복적인 에러가 발생하지만 값을 가져오는데는 이상이없습니다.

프론트에서 호출해도 정상적으로 데이터가 호출됩니다.

그래서 quertdsl에 관한내용을 지우고 해봤는데 에러가 사라졌습니다. 혹시 querydsl 에 관한 이슈가 있는걸까요? 검색을 해봤지만 발견할 수가 없었습니다.

java.lang.NullPointerException: Cannot read field "generatedClass" because "data" is null