在Angular5中使用AWS SDK for Javascript我在运行DetectLabels或DetectFaces并返回promise时看到以下错误。当我在Detect函数中打印返回时，一切看起来都是正确的。尝试将结果返回到promise时，只会弹出错误。
"core.js:1449 ERROR Error: Uncaught (in promise):
InvalidSignatureException: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.
InvalidSignatureException: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.
我已经确认该帐户似乎正在按预期工作，因为回调中的日志成功打印并且存储桶与重新识别位于同一区域。有人见过这个吗？
const rekognition = new Rekognition(
{
accessKeyId: this.accessKeyId,
secretAccessKey: this.secretAccessKey,
region: this.region,
signatureCache: false,
signatureVersion: 'v4'
}
);
const req = rekognition.detectLabels(params, function(err, data) {
if (err) {
console.log(err, err.stack); // an error occurred
return null;
}
// response prints to console successfully
console.log(JSON.stringify(data, null, '\t'));
});
req.promise().then(data => {
console.log(data); //Throws Exception
});
}
****解决方法（工作）
aws.service
rekogDetechLabels(): AWS.Request<Rekognition.DetectLabelsResponse, AWS.AWSError> {
const params = {
Image: {
S3Object: {
Bucket: this.bucket,
Name: this.fileName
}
}
};
const rekognition = new Rekognition(
{
accessKeyId: this.accessKeyId,
secretAccessKey: this.secretAccessKey,
region: this.region,
signatureCache: false,
signatureVersion: 'v4'
}
);
return rekognition.detectLabels(params, function(err, data) {
if (err) {
console.log(err, err.stack); // an error occurred
return false;
}
});
}
app.component
// Label Rekognition
const req = this.aws.rekogDetechLabels()
.on('success', response => {
console.log(response.data);
this.labels = (<Rekognition.DetectLabelsResponse>response.data).Labels;
}).on('error', err => {
console.log('Error with Rekognition');
});