Question

我正在尝试在我的网络应用程序中集成lex bot，这是我编写的代码。我为未经身份验证的用户使用了身份池。这是我的代码

＆＃13;

<!DOCTYPE html>
<html>

<head>
	<title>Amazon Lex for JavaScript - Sample Application (BookTrip)</title>
	<script src="https://sdk.amazonaws.com/js/aws-sdk-2.41.0.min.js"></script>
	
		// Initialize the Amazon Cognito credentials provider
		AWS.config.region = 'us-east-1'; // Region
		AWS.config.credentials = new AWS.CognitoIdentityCredentials({
		// Provide your Pool Id here
			IdentityPoolId: 'us-east-1:xxxxxxxxxxxxx',
			RoleArn: 'arn:aws:cognito-identity:us-east-1:xxxxxxxxxxxx',
			

		});

＆＃13;

但每次我收到＆＃34;在配置中缺少凭据＆＃34;错误。我也尝试过使用AWSCognito.config.credentials，但它仍然给出了同样的错误。任何帮助将不胜感激。

Answer 1

您是否正在进行以下调用以获取凭据？

// Make the call to obtain credentials
AWS.config.credentials.get(function(){

    // Credentials will be available when this function is called.
    var accessKeyId = AWS.config.credentials.accessKeyId;
    var secretAccessKey = AWS.config.credentials.secretAccessKey;
    var sessionToken = AWS.config.credentials.sessionToken;

    // Add your code here that uses the credentials

});

// Do NOT assume that the credentials are valid here

注意：在调用回调函数之前，凭据不可用。一个常见的错误是在回调之外编写代码，假设在调用AWS.config.credentials.get（）之后立即存在凭证。

接收＆＃34;在配置中丢失凭据＆＃34;使用AWS.CognitoIdentityCredentials时

1 个答案: