1

这是 gradle 依赖项。（更新）

   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'

此代码生成错误。

   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();

收到错误

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

在此处输入图像描述

知道我缺少什么图书馆。我假设图书馆可能存在冲突。我怎样才能解决这个问题？

4

1 回答 1

1

google-api-client您的屏幕截图显示了该库的 2 个版本：

在此处输入图像描述

此外，您在 gradle 构建文件中导入了两次库：

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'

您得到的事实java.lang.NoClassDefFoundError似乎是由于旧版本的库不包含提到的类并且它覆盖了最新版本的库。您需要做的就是从您的 gradle 文件中删除对旧版本库（1.4.1-beta）的引用。

于 2017-09-25T21:46:59.100 回答