我正在使用 AWS 为 iOS 应用程序工作。我正在尝试从我的 DynamoDB 表中获取项目，但我收到了错误消息（有时它会起作用！！！就像工作 4 小时然后下降）
{
__type=com.amazon.coral.service#AccessDeniedException,
Message=User:arn:aws:sts::306752704279:
assumed-role/Cognito_equo_MOBILEHUB_1429140868Unauth_Role/CognitoIdentityCredentials
is not authorized to perform: dynamodb:Query on resource:
arn:aws:dynamodb:us-east-1:306752704279:table/equo-mobilehub-1429140868-TripActive/index/searchByOwner
}
我不希望我的应用程序拥有未经身份验证的用户，但我在调用 DynamoDB 查询之前已登录。谁能帮我？这是我的查询代码：（我正在为登录使用 de Generated Code）
-(void) getUserHorsesWithMax: (int)pMax page:(int) pPage {
dispatch_async(dispatch_get_main_queue(), ^{
loading = true;
AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
identityPoolId:@"us-east-1:a1372699-48b0-499a-bf17-84811860a8bb"];
[[credentialsProvider getIdentityId] continueWithBlock:^id(AWSTask *task) {
if (task.error) {
NSLog(@"Error: %@", task.error);
}
else {
// the task result will contain the identity id
NSString *cognitoId = task.result;
AWSDynamoDBObjectMapper *dynamoDBObjectMapper = [AWSDynamoDBObjectMapper defaultDynamoDBObjectMapper];
AWSDynamoDBQueryExpression *queryExpression = [AWSDynamoDBQueryExpression new];
queryExpression.indexName = @"searchByOwner";
queryExpression.expressionAttributeValues = @{@":owID":cognitoId};
queryExpression.keyConditionExpression = @"ownerId=:owID";
[[dynamoDBObjectMapper query:[TripActive class]
expression:queryExpression]
continueWithBlock:^id(AWSTask *task) {
loading = false;
if (task.error) {
NSLog(@"The request failed. Error: [%@]", task.error);
}
if (task.exception) {
NSLog(@"The request failed. Exception: [%@]", task.exception);
}
if (task.result) {
dispatch_async(dispatch_get_main_queue(), ^{
AWSDynamoDBPaginatedOutput *paginatedOutput = task.result;
horses = [NSMutableArray new];
for (Horse *horse in paginatedOutput.items) {
//Do something with horse.
if (self.segmentedTrips.selectedSegmentIndex == FUTURE_TRIPS) {
} else if (self.segmentedTrips.selectedSegmentIndex == ACTIVE_TRIPS) {
[horses addObject:horse];
} else if (self.segmentedTrips.selectedSegmentIndex == PAST_TRIPS) {
}
}
[UIView animateWithDuration:0.2 animations:^(void) {
self.tripsTableView.alpha = 1.0f;
} completion:^(BOOL finished) {
self.tripsTableView.hidden = false;
}];
[self.tripsTableView reloadData];
});
}
return nil;
}];
}
return nil;
}];
});
}
请帮我！