无法使用 Node 下载 S3 对象

Question

我正在尝试在使用节点时下载 S3 对象，并问了之前的问题。代码如下。我将我的访问密钥凭证声明为环境变量，并尝试了我的账户访问密钥和 IAm 角色。我尝试生成多个密钥、配置文件、存储桶和文件，以及创建存储桶策略，所有这些都导致了以下堆栈跟踪。我是否正确调用存储桶和文件对象，以及是否正确设置了凭证？在使用 aws-sdk 下载对象之前，我是否需要先确保设置其他策略或配置集？谢谢！

法典：

var AWS = require('aws-sdk');
var s3 = new AWS.S3();
AWS.config = new AWS.Config();
AWS.config.accessKeyId = "myAccessKey";
AWS.config.secretAccessKey = "mySecretAccessKey";
AWS.config.region = "us-east-1";
var params = { Bucket: "myBucket", Key: "fileName" }
s3.getObject(params, function(err, data) {
  if (err) console.log(err, err.stack);
  else     console.log(data);
});

堆栈跟踪：

jemery62:aws/ (aws_edits✗) $ node main.js                                                                       [21:26:21]
{ AccessDenied: Access Denied
    at Request.extractError (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/services/s3.js:577:35)
    at Request.callListeners (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:105:20)
    at Request.emit (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:77:10)
    at Request.emit (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:683:14)
    at Request.transition (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:685:12)
    at Request.callListeners (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:115:18)
  message: 'Access Denied',
  code: 'AccessDenied',
  region: null,
  time: 2017-10-27T02:26:23.394Z,
  requestId: 'DDD8D2211A6F4551',
  extendedRequestId: 'adUqsuXLIs0EIuy62/9YwcDWiil+ms9fX7+q4GIOxXWos5/5Jgvs3JQsg4N3BchWPnjIjj6Yqjg=',
  cfId: undefined,
  statusCode: 403,
  retryable: false,
  retryDelay: 23.592474526046313 } 'AccessDenied: Access Deniedn    at Request.extractError (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/services/s3.js:577:35)n    at Request.callListeners (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:105:20)n    at Request.emit (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:77:10)n    at Request.emit (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:683:14)n    at Request.transition (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:22:10)n    at AcceptorStateMachine.runTo (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/state_machine.js:14:12)n    at /Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/state_machine.js:26:10n    at Request.<anonymous> (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:38:9)n    at Request.<anonymous> (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/request.js:685:12)n    at Request.callListeners (/Users/jemery62/dev/jimmyemery_com/node_modules/aws-sdk/lib/sequential_executor.js:115:18)'

Answer 1

此问题是您在创建 S3 客户端后设置"配置"。将代码更改为如下所示：

var AWS = require('aws-sdk');
AWS.config = new AWS.Config();
AWS.config.accessKeyId = "myAccessKey";
AWS.config.secretAccessKey = "mySecretAccessKey";
AWS.config.region = "us-east-1";
var s3 = new AWS.S3();
var params = { Bucket: "myBucket", Key: "fileName" }
s3.getObject(params, function(err, data) {
  if (err) console.log(err, err.stack);
  else     console.log(data);
});