userRepository null ?

Users Microservice - JPA 수강중입니다.

실습 따라서 작성하고 있는데 오류가 나는데 잘 모르겠습니다.

UserServiceImpl 에서

ModelMapper mapper = new ModelMapper();
mapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
UserEntity userEntity = mapper.map(userDto, UserEntity.class);
userEntity.setEncryptedPwd("encrypted_password");

여기까지 값이 잘 찍히다가

userRepository.save(userEntity); <-- 여기서 오류가 납니다.

2023-04-24T21:55:59.923+09:00 ERROR 3608 --- [o-auto-1-exec-6] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.NullPointerException: Cannot invoke "com.example.userservice.jpa.UserRepository.save(Object)" because "this.userRepository" is null] with root cause

java.lang.NullPointerException: Cannot invoke "com.example.userservice.jpa.UserRepository.save(Object)" because "this.userRepository" is null

at com.example.userservice.service.UserServiceImpl.createUser(UserServiceImpl.java:32) ~[classes/:na]

at com.example.userservice.controller.UserController.createUser(UserController.java:45) ~[classes/:na]

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207) ~[spring-web-6.0.7.jar:6.0.7]

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152) ~[spring-web-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011) ~[spring-webmvc-6.0.7.jar:6.0.7]

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914) ~[spring-webmvc-6.0.7.jar:6.0.7]

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:563) ~[tomcat-embed-core-10.1.7.jar:6.0]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.0.7.jar:6.0.7]

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:631) ~[tomcat-embed-core-10.1.7.jar:6.0]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) ~[tomcat-embed-core-10.1.7.jar:10.1.7]