在AWS Cognito身份池中，资源服务器是代表API资源的标识符。对于每个资源服务器，您可以定义作用域，并将其分配给客户端。

使用AWS Cognito身份池时，您需要配置资源服务器和对应的作用域。下面是示例代码：

// 配置 AWS Cognito 身份池
const AWS = require('aws-sdk/global');
const AmazonCognitoIdentity = require('amazon-cognito-identity-js');

global.fetch = require('node-fetch');

const authenticationData = {
    Username : 'username',
    Password : 'password',
};

const authenticationDetails = new AmazonCognitoIdentity.AuthenticationDetails(authenticationData);

const poolData = {
    UserPoolId : 'pool-id',
    ClientId : 'client-id',
};

const userPool = new AmazonCognitoIdentity.CognitoUserPool(poolData);

const userData = {
    Username : 'username',
    Pool : userPool,
};

const cognitoUser = new AmazonCognitoIdentity.CognitoUser(userData);
cognitoUser.authenticateUser(authenticationDetails, {
    onSuccess: function (result) {
        console.log(' access token + ' + result.getAccessToken().getJwtToken());
        const accessToken = result.getAccessToken().getJwtToken();
        
        // 定义资源服务器
         const resourceServer = {
            userPoolId: 'pool-id',
            identifier: 'resource-server-identifier',
            name: 'resource-server-name',
            scopes: [
                {
                    scopeName: 'scope-1',
                    scopeDescription: 'This is scope 1'
                },
                {
                    scopeName: 'scope-2',
                    scopeDescription: 'This is scope 2'
                }
            ]
        };

        // 创建 AWS Cognito 资源服务器
        const params = {
            AccessToken: accessToken,
            UserPoolId: resourceServer.userPoolId,
            Identifier: resourceServer.identifier,
            Name: resourceServer.name,
            Scopes: resourceServer.scopes
        };
        const cognitoidentityserviceprovider = new AWS.CognitoIdentityServiceProvider();
        cognitoidentityserviceprovider.createResourceServer(params, function(err, data) {