AppIdentityCredential 和 AppEngineDataStoreFactory

Question

我不明白为什么我无法使用 AppEngineDataStoreFactory 保存 AppIdentityCredential

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AppEngineDataStoreFactory newFactory = new AppEngineDataStoreFactory();\nAppIdentityCredential credential = new AppIdentityCredential.Builder(SCOPES).build()\n\n//line with error\nif (newFactory.getDataStore(StoredCredential.DEFAULT_DATA_STORE_ID)\n                              .set(userId, new StoredCredential(credential))) {\n  return  credential;\n}\nreturn null;\n

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AppIdentityCredential 不可序列化，StoredCredential 只接受 Credential 对象...\n逻辑是什么？？？

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C\xc3\xa9dric

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Answer 1

StoredCredential(Credential) 方法采用 Credential 对象 [1]，而不是 AppIdentityCredential 对象 [2]。

您对该方法使用了错误的对象。

[1] - https://code.google.com/p/google-oauth-java-client/source/browse/google-oauth-client/src/main/java/com/google/api/client/auth/ oauth2/StoredCredential.java?r=e193e3ede28cd312eef14adb9566a7f0476425e7

[2] - http://javadoc.google-api-java-client.googlecode.com/hg/1.8.0-beta/com/google/api/client/googleapis/extensions/appengine/auth/oauth2/AppIdentityCredential。 html