[Spring Boot] MyBatis Bean 주입 오류 available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberServiceImpl' defined in file [D:\PERSONAL\workspace\frnd_letter\frnd_letter\build\classes\java\main\com\server\frnd_letter\model\service\impl\MemberServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type 'com.server.frnd_letter.model.dao.MemberDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:795)
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:237)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1357)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1194)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:562)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:522)
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:337)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:335)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1443)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1353)
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:904)
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:782)
	... 110 more

@Bean 주입도 모두 잘 했는데 위와 같은 오류가 발생.  그 이유는 MyBatis 버전 문제에 있었다.

 

현재 Spring Boot 3 버전을 사용하고 있었는데 MyBatis는 바보 같이 2 버전을 사용한 것... Maven Repository에서 Usage 수가 많다고 단순히 얘가 제일 안정적인가봐 얘 써야지! 하면 안 되고 버전에 맞게 사용해야 한다는 것을 배웠다.

 

plugins {
	id 'java'
	id 'org.springframework.boot' version '3.3.1' // Spring Boot 버전이 3
	id 'io.spring.dependency-management' version '1.1.5'
}

group = 'com.server'
version = '0.0.1-SNAPSHOT'

java {
	toolchain {
		languageVersion = JavaLanguageVersion.of(17)
	}
}

configurations {
	compileOnly {
		extendsFrom annotationProcessor
	}
}

repositories {
	mavenCentral()
}

dependencies {
	implementation 'org.springframework.boot:spring-boot-starter-web'
	// MyBatis 버전도 3으로 사용해주기
	implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:3.0.3'
	compileOnly 'org.projectlombok:lombok'
	runtimeOnly 'org.mariadb.jdbc:mariadb-java-client'
	annotationProcessor 'org.projectlombok:lombok'
	testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

tasks.named('test') {
	useJUnitPlatform()
}