当在ios应用程序中收到验证码时，尝试从后端服务器交换验证码时，java重定向_uri

Question

我有一个ios应用程序和一个web应用程序，可以从用户那里获得授权，生成一个authcode，并将其发送到后端java servlet，后者试图将authcode交换为access&；刷新代币。从web应用程序交换身份验证码是可行的，但是对于从ios应用程序生成的身份验证码，我在交换过程中遇到以下错误

com.google.api.client.auth.oauth2.TokenResponseException: 400 Bad Request { "error" : "invalid_request", "error_description" : "Missing parameter: redirect_uri" }

这是进行交换的代码

      public OAuthCodeExchangeResponse exchangeAuthCode(String authCode, boolean isIosApp) throws JSONException, IOException {
OAuthCodeExchangeResponse response = new OAuthCodeExchangeResponse();
GoogleClientSecrets clientSecrets = getClientSecrets(isIosApp);
// Build flow and trigger user authorization request.
GoogleAuthorizationCodeFlow flow =
    new GoogleAuthorizationCodeFlow.Builder(
        HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
        .setAccessType("offline")
        .build();
GoogleTokenResponse tokenResponse = null;
if(isIosApp == false) {
  tokenResponse = flow.newTokenRequest(authCode)
      .setRedirectUri("postmessage")
      .execute();
} else {
  tokenResponse = flow.newTokenRequest(authCode).execute();
}
GoogleIdToken idToken = tokenResponse.parseIdToken();
GoogleIdToken.Payload payload = idToken.getPayload();
response.setAccessToken(tokenResponse.getAccessToken());
response.setEmail(payload.getEmail());
response.setIdToken(tokenResponse.getIdToken());
response.setRefreshToken(tokenResponse.getRefreshToken());
return response;
}

public GoogleClientSecrets getClientSecrets(boolean isIosApp) throws JSONException, IOException {
GoogleClientSecrets.Details d = new GoogleClientSecrets.Details();
if(isIosApp == false) {
  d.setClientId(WebClientId);
  d.setClientSecret(WebClientSecret);
} else {
  d.setClientId(PhoneClientId);
}
GoogleClientSecrets clientSecrets = new GoogleClientSecrets();
clientSecrets.setInstalled(d);
return clientSecrets;
}

在交换ios应用程序生成的身份验证码时，我必须设置什么重定向uri？在谷歌开发者控制台中为ios应用程序创建的凭据没有重定向uri集

Answer 1

urn:ietf:wg:oauth:2.0:oob

您需要安装的应用程序的流程，请参见https://developers.google.com/identity/protocols/OAuth2InstalledApp#formingtheurl