如何解决从GoogleCredential获取访问令牌时出错
我正在尝试获取访问令牌,以使用Cloud sql Admin API将表格以CSV格式导出到Google云存储。我不断收到此错误:每次在下面的代码中调用Scopes not configured for service account. Scoped should be specified by calling createScoped or passing scopes to constructor.
时,都会 credentials.refreshAccesstoken();
。
有人可以指导我关于我在这里做错了什么
Set<String> oAuthScopes = new HashSet<String>();
oAuthScopes.add(sqlAdminScopes.CLOUD_PLATFORM);
oAuthScopes.add(sqlAdminScopes.sqlSERVICE_ADMIN);
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
credentials.createScoped(oAuthScopes);
Accesstoken access_token = credentials.refreshAccesstoken();
try {
httppost.addRequestHeader("Content-Type","application/json");
httppost.addRequestHeader("Authorization","Bearer " + access_token.getTokenValue());
httppost.setRequestEntity(
new StringRequestEntity(
"{\"exportContext\":" +
"\"fileType\": \"CSV\"," +
"\"uri\":" + EXPORT_BUCKET +
"\"databases\": [\"" + DATABASE_NAME + "\"]," +
"\"csvexportOptions\": " +
"{" +
"\"selectQuery\":\"" + sql_QUERY + "\" " +
"} " +
"} " +
"}","application/json","UTF-8"));
httpclient.executeMethod(httppost);
String response = new String(httppost.getResponseBody());
httppost.releaseConnection();
} catch (UnsupportedEncodingException unsupportedEncodingException) {
unsupportedEncodingException.printstacktrace();
}
解决方法
此异常似乎来自以下事实:一旦您设置了“ GOOGLE_APPLICATION_CREDENTIALS”,客户端libraries的“应用程序默认凭据”授权策略便会生效。
此外,您可以创建如下范围的凭据:
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault().createScoped(Arrays.asList("https://www.googleapis.com/auth/cloud-platform"));
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