亚马逊Cognito的用户池 - CredentialsError：配置中缺少凭据

Question

我正尝试在this教程的帮助下创建Web App身份验证。这是我写的代码 -

var app = {}; 

app.configureCognito = function(){ 
    AWSCognito.config.region = 'us-east-1'; 

    var poolData = { 
     UserPoolId: 'userPoolId', 
     ClientId: 'ClientId' 
    }; 

    var userPool = new AWSCognito.CognitoIdentityServiceProvider.CognitoUserPool(poolData); 
    var userData = { 
        UserName:'MyName', 
        Pool: userPool 
    }; 

    var attributeList = []; 

    var dataEmail = { 
      Name: 'email', 
      Value: 'mailme@mydomain.com' 
    }; 

    var dataPhoneNumber = { 
      Name: 'phone_number', 
      Value: '+9112212212212' 
    }; 

    var attributeEmail = new AWSCognito.CognitoIdentityServiceProvider.CognitoUserAttribute(dataEmail); 
    var attributePhoneNumber = new AWSCognito.CognitoIdentityServiceProvider.CognitoUserAttribute(dataPhoneNumber); 

    attributeList.push(attributeEmail); 
    attributeList.push(attributePhoneNumber); 

    var cognitoUser; 

    userPool.signUp('userName','password',attributeList,null,function(err,result){ 
      if(err){ 
        console.log(err); 
        alert(err); 
        return; 
      } 
      cognitoUser = result.user; 
      console.log('User Name is: '+cognitoUser); 
    }); 

}; 

我得到它说“在配置缺少凭据”，据我所知，我们没有做任何AWSCognito.config.credentials分配这里，但它不是应该的错误使用userPool对象中提供的信息？代码有什么不对或缺什么？根据UserPoolId和客户端ID，两者都是100％正确的。任何帮助，将不胜感激。

Answer 1

我把它用下面的代码显然，有没有必要在这个例子中提供IdentityPoolId都解决了，这些只是可以留给下面的占位符 -

AWS.config.region = 'us-east-1'; // Region 
AWS.config.credentials = new AWS.CognitoIdentityCredentials({ 
    IdentityPoolId: '...' 
}); 

AWSCognito.config.region = 'us-east-1'; 
AWSCognito.config.credentials = new AWS.CognitoIdentityCredentials({ 
    IdentityPoolId: '...' 
}); 

而且两者的凭证需要设置AWS.config.credentials和AWSCognito.config.credentials。一旦AWSCognito.config需要完成以上步骤如下更新 -

// Need to provide placeholder keys unless unauthorised user access is enabled for user pool 
AWSCognito.config.update({accessKeyId: 'anything', secretAccessKey: 'anything'}) 

var poolData = { 
    UserPoolId : 'user pool id collected from user pool', 
    ClientId : 'application client id of app subscribed to user pool' 
}; 

dataPhoneNumber和用户数据是可选的，dataPhoneNumber应在案件的短信验证需要注册提供。

一旦上面的问题得到解决，Identity-Code是一个工作模式，如果有人想看看它。