스프링부트에서 jwt 생성시 nullpointException

Question

package org.example; import io.jsonwebtoken.*; import lombok.RequiredArgsConstructor; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import javax.servlet.http.HttpServletRequest; import java.time.Duration; import java.util.Base64; import java.util.Date; import java.util.HashMap; import java.util.Map; @RequiredArgsConstructor @Component public class JwtTokenProvider { // 토큰 유효시간 30분 private long tokenValidTime = 30 * 60 * 1000L; private String secretKey = "llshlllshlllshlllshl"; @PostConstruct protected void init() { secretKey = Base64.getEncoder().encodeToString(secretKey.getBytes()); } public String createJwtToken(String email, String role) { Map headers = new HashMap<>(); headers.put("typ", "JWT"); headers.put("alg","HS256"); //토큰 빌더 Claims claims = Jwts.claims().setSubject(email); // JWT payload 에 저장되는 정보단위 claims.put("role", role); // 정보는 key / value 쌍으로 저장된다. Date now = new Date(); return Jwts.builder() .setClaims(claims) // 정보 저장 .setIssuedAt(now) // 토큰 발행 시간 정보 .setExpiration(new Date(now.getTime() + tokenValidTime)) // set Expire Time .signWith(SignatureAlgorithm.HS256, secretKey) // 사용할 암호화 알고리즘과 // signature 에 들어갈 secret값 세팅 .compact(); }위 JwtTokenProvider입니다아래는 Controller @PostMapping("/login") public String login(@RequestBody UserDto dto){ Optional user = usersRepository.findById(dto.getEmail()); if (!user.isPresent()) { throw new IllegalArgumentException("가입되지 않은 E-MAIL 입니다."); } if(!usersRepository.findPasswordById(dto.getEmail()).equals(dto.getPassword())){ throw new IllegalArgumentException("잘못된 비밀번호입니다"); } dto.setRole("USER"); return jwtTokenProvider.createJwtToken(dto.getEmail(), dto.getRole()); }스프링 부트를 사용하고 있습니다 /login을 호출하는데 nullpointexception 에러가 나네요.도대체 어디가 문제일까요?java.lang.NullPointerException: null at org.example.UserController.login(UserController.java:49) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:893) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:798) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:94) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834)

냥냥가면 · Answer

최초 컨트롤러 login() 실행시 dto 에는 값이 들어오나요?

감자도둑 · Answer

UserController.java:49

스프링부트에서 jwt 생성시 nullpointException

2개의 답변

기술 목록