UnsatisfiedDependencyException , NoClassDefFoundError 에러

회원가입 시 아래 에러가  남

 

에러가 난 상태의 코드..

 

 

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2023-09-13T10:26:55.675+09:00 ERROR 11084 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'homeController' defined in file [C:\Users\weaver-gram-002\IdeaProjects\first\build\classes\java\main\com\example\first\controller\HomeController.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'userServiceImpl' defined in file [C:\Users\weaver-gram-002\IdeaProjects\first\build\classes\java\main\com\example\first\service\UserServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'homeMapper' defined in file [C:\Users\weaver-gram-002\IdeaProjects\first\build\classes\java\main\com\example\first\mapper\HomeMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory': Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception with message: Failed to parse mapping resource: 'file [C:\Users\weaver-gram-002\IdeaProjects\first\build\resources\main\mybatis\mapper\HomeMapper.xml]'

 

 

매퍼 쪽에서 에러가 나는 거 같음. 

 

sqlSessionFactory를 주입하는데 실패했다고 해서 

 

아래와 같이 주입을 해봤다. 

package com.example.first.service;

import com.example.first.dto.UserDto;
import com.example.first.dto.UserRequestDto;
import com.example.first.entity.User;
import com.example.first.mapper.HomeMapper;
import lombok.RequiredArgsConstructor;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
@RequiredArgsConstructor
public class UserServiceImpl implements UserService{
    private final HomeMapper homeMapper;
    private final SqlSessionTemplate sqlSessionTemplate;
//    private final BCryptPasswordEncoder encoder;

    @Autowired
    public UserServiceImpl(HomeMapper homeMapper, SqlSessionTemplate sqlSessionTemplate) {
        this.homeMapper = homeMapper;
        this.sqlSessionTemplate = sqlSessionTemplate;
    }


    @Override
    public void signUp(UserDto userDto) {
        homeMapper.signUp(userDto);
    }

    @Override
    public void login(UserRequestDto userRequestDto) {
        Long userId = userRequestDto.getUserId();
        User foundUser = homeMapper.findByUserId(userId);
        if (userId == foundUser.getUserId()) {

            homeMapper.login(userRequestDto);
        }

    }

//    @Override
//    public UserResponseDto personalInfo() {
//        return homeMapper.personalInfo();
//    }

    @Override
    public boolean isUsernameUnique(String username) {
        return homeMapper.isUsernameUnique(username);
    }
}

 

동일한 에러가 계속 뜬다 ,,

 

 

아래는 코드ㅜㅜ

https://github.com/hyeonju-kim/first_project

GitHub - hyeonju-kim/first_project: 첫번째 과제

 

 

ㅡㅡㅡ

1차 시도 : 마이바티스는 스프링부트 2와 써야한다는 글을 보고 스프링버전을 2.6.7로 내려줌

 

java.lang.NoClassDefFoundError: org/springframework/aot/AotDetector
at org.mybatis.spring.mapper.ClassPathMapperScanner.<init>(ClassPathMapperScanner.java:91) ~[mybatis-spring-3.0.2.jar:3.0.2]
at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:363) ~[mybatis-spring-3.0.2.jar:3.0.2]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:142) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.7.jar:2.6.7]
at co m.example.first.FirstApplication.main(FirstApplication.java:12) ~[main/:na]
Caused by: java.lang.ClassNotFoundException: org.springframework.aot.AotDetector
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[na:na]
... 13 common frames omitted

 

 

UnsatisfiedDependencyException 에러가 사라지고 새로운 NoClassDefFoundError 에러가 생김 

 

 NoClassDefFoundError 에러는 컴파일 시점에 존재했던 클래스가 런타임에 존재하지 않으면 발생하는 에러라고 한다.. 

 

첫번째 시도 :

 

패키지 경로가 잘못될 경우 , 이런 문제가 발생할 수도 있다고 하여, 

mapper.xml의 패키지 경로를 살펴봄

 

<!--회원가입-->
<mapper namespace="com.example.first.mapper.HomeMapper">
    <select id="signUp" parameterType="com.example.first.dto.UserRequestDto">
        INSERT INTO postgres.first_project.users (user_email, user_name, user_nickname, user_password, user_password_confirm, user_phone_number)
        VALUES ( #{email}, #{username}, #{nickname}, #{password}, #{password}, #{phoneNumber})
    </select>

여기서 이 경로가 잘못되어 있었다. 

<select id="signUp" parameterType="com.example.first.dto.UserRequestDto">

 

아래로 수정했다. 

<select id="signUp" parameterType="com.example.first.dto.UserDto">

안됨ㅎ

 

두번째 시도 : 

마이바티스 의존성 버전을 3.0.2 -> 2.2.2로 낮춤

implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.2.2'

 

 

 

해결!!!!ㅠㅠ

 

 

https://yangbox.tistory.com/117

NoClassDefFoundError 발생원인 및 해결(ClassNotFoundException와 차이점)

https://stackoverflow.com/questions/34413/why-am-i-getting-a-noclassdeffounderror-in-java

Why am I getting a NoClassDefFoundError in Java?