[Spring] Jwt 의존성 설정 오류 : UnknownClassException

 

오류 내용

 

io.jsonwebtoken.lang.UnknownClassException: Unable to load class named [io.jsonwebtoken.impl.DefaultJwtBuilder] from the thread context, current, or system/application ClassLoaders.  All heuristics have been exhausted.  Class could not be found.  Have you remembered to include the jjwt-impl.jar in your runtime classpath?

 

---

 

문제코드

implementation 'io.jsonwebtoken:jjwt-api:0.12.3'

 

 

 

 

참고 사이트

https://github.com/jwtk/jjwt

GitHub - jwtk/jjwt: Java JWT: JSON Web Token for Java and Android

 

dependencies {
    implementation 'io.jsonwebtoken:jjwt-api:0.12.3'
    runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.3'
    runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.3' // or 'io.jsonwebtoken:jjwt-gson:0.12.3' for gson
    /* 
      Uncomment this next dependency if you are using:
       - JDK 10 or earlier, and you want to use RSASSA-PSS (PS256, PS384, PS512) signature algorithms.
       - JDK 10 or earlier, and you want to use EdECDH (X25519 or X448) Elliptic Curve Diffie-Hellman encryption.
       - JDK 14 or earlier, and you want to use EdDSA (Ed25519 or Ed448) Elliptic Curve signature algorithms.
      It is unnecessary for these algorithms on JDK 15 or later.
    */
    // runtimeOnly 'org.bouncycastle:bcprov-jdk18on:1.76' // or bcprov-jdk15to18 on JDK 7
}

 

 

누락된 의존성 추가 후 해결

 

implementation 'io.jsonwebtoken:jjwt-api:0.12.3'

// 추가한 코드
runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.3'
runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.3'