CODEWITHSUNDEEP
javajacksonjackson2
legend12345
legend12345

Reputation: 162

java.lang.NoClassDefFoundError: com/google/api/client/json/JsonFactory issue

This is the gradle dependencies. (UPDATED)

   compile group: 'net.sf.ehcache', name: 'ehcache', version: '2.10.4'
compile 'org.springframework:spring-context-support:4.3.8.RELEASE'
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.boot:spring-boot-starter-data-jpa')
compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.6'

compile group: 'com.google.api-client', name: 'google-api-client', version: '1.20.0'

this code generates the error.

   HttpTransport transport = new NetHttpTransport();
        JacksonFactory jsonFactory =
                new JacksonFactory();
        GoogleIdTokenVerifier verifier = new GoogleIdTokenVerifier.Builder(
                transport, jsonFactory)
                .setAudience(Collections.singletonList("1009293319809-dek5gcam0af2c52ute611c8p51cfvker.apps.googleusercontent.com"))
                // Or, if multiple clients access the backend:
                //.setAudience(Arrays.asList(CLIENT_ID_1, CLIENT_ID_2, CLIENT_ID_3))
                .build();

Received error 

Caused by: java.lang.NoClassDefFoundError: com/google/api/client/json/JsonFactory
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:613)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:247)
... 63 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.google.api.client.json.JsonFactory
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
... 70 common frames omitted

enter image description here

Any idea of what library I am missing. I am assuming there is maybe conflict of libraries. how can I fix this?

Upvotes: 1

Views: 1580

Answers (1)

Louis Bono
Louis Bono

Reputation: 178

Your screenshot shows 2 versions of the google-api-client library:

enter image description here

Also, you are importing the library twice in your gradle build file:

compile group: 'com.google.api.client', name: 'google-api-client', version: '1.4.1-beta'
...
compile group: 'com.google.api-client', name: 'google-api-client', version: '1.20.0'

The fact that you get java.lang.NoClassDefFoundError seems to be caused by the fact that the older version of the library does not contain the mentioned class and it is overriding the most recent version of the library. All you need to do is remove the reference to the older version of the library (1.4.1-beta) from your gradle file.

Upvotes: 1

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