Question

我正在使用我从https://developers.google.com/gmail/api/quickstart/java获得的源代码当我在日食中运行时，我收到错误

Exception in thread "main" java.lang.NullPointerException
    at java.io.Reader.<init>(Unknown Source)
    at java.io.InputStreamReader.<init>(Unknown Source)
    at googleemailid.GmailQuickstart.authorize(GmailQuickstart.java:79)
    at googleemailid.GmailQuickstart.getGmailService(GmailQuickstart.java:101)
    at googleemailid.GmailQuickstart.main(GmailQuickstart.java:109)

InputStream in =GmailQuickstart.class.getResourceAsStream("E:\\client_secret.json");

    GoogleClientSecrets clientSecrets =
        GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

出现错误 GoogleClientSecrets clientSecrets = GoogleClientSecrets.load（JSON_FACTORY，new InputStreamReader（in））;

为了进行调试，我尝试使用InputStream读取文件，并且能够读取文件和文件，并且具有完全权限。我也得到了以下警告。

Jun 08, 2015 5:45:43 AM com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for everybody: C:\Users\Abc\.credentials\gmail-api-quickstart
Jun 08, 2015 5:45:43 AM com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for owner: C:\Users\Abc\.credentials\gmail-api-quickstart

无法读取文件GmailQuickstart.class.getResourceAsStream（“E：\\ client_secret.json”）;

0 个答案: