0

我想使用预签名的 URL 将图像文件上传到 AWS s3 存储桶，但是屏幕截图中显示了一个错误，我已经按照此页面s3 direct file upload的帖子进行操作，我想知道什么我正在犯的错误，我也想知道这是否是服务器端问题，或者我应该使用一些不同的方法来向“预签名”URL 发出 put 请求，谢谢。

错误我上邮递员

我的 serverless.yml

service: my-service-api

provider:
  name: aws
  runtime: nodejs4.3
  stage:  dev
  region: us-east-1
  iamRoleStatements:
    - Effect: "Allow"
      Action:
        - "dynamodb:*"        
      Resource: "*"
    - Effect: "Allow"
      Action:
        - "s3:*"        
      Resource: "arn:aws:s3:::profile-images/*"   

custom:
  globalResultTtlInSeconds: 1

package:
  individually: true
  include:
    - node_modules/mysql/**
    - node_modules/bluebird/**
    - node_modules/joi/**
  exclude:
    - .git/**
    - .bin/**
    - tmp/**
    - api/**
    - node_modules/**
    - utils/**
    - package.json
    - npm_link.sh
    - templates.yml

functions:
  profiles:
    handler: api/profiles/handler.profiles
    events:
      - http:
          method: POST
          path: api/profiles/uploadURL
          cors: true
          integration: lambda
          request: ${file(./templates.yml):request}  
          authorizer: 
            arn: arn:aws:lambda:us-east-1:000000000000:function:customAuthorizer
            resultTtlInSeconds: ${self:custom.globalResultTtlInSeconds}
            identitySource: method.request.header.Authorization
    package:
      include:
        - api/profiles/**
        - node_modules/node-uuid/**
        - node_modules/jsonwebtoken/**
        - node_modules/rand-token/**          

resources:
  Resources:
    UploadBucket:
      Type: AWS::S3::Bucket
      Properties:
        BucketName: profile-images
        AccessControl: PublicRead
        CorsConfiguration:
          CorsRules:
          - AllowedMethods:
            - GET
            - PUT
            - POST
            - HEAD
            AllowedOrigins:
            - "*"
            AllowedHeaders:
            - "*"   
    IamPolicyInvokeLambdaFunction:
      Type: AWS::IAM::Policy     
      Properties: 
        PolicyName: "lambda-invoke-function"
        Roles:
          - {"Ref" : "IamRoleLambdaExecution"}
        PolicyDocument:
          Version: '2012-10-17'
          Statement:            
              - Effect: Allow
                Action: 
                  - "lambda:InvokeFunction"
                Resource: "*"

我的处理程序文件

var s3Params = {
                Bucket: 'profile-images',
                Key: image.name,
                ACL: 'public-read'
            };

 s3.getSignedUrl('putObject', s3Params, function (err, url){
       if(err){
          console.log('presignedURL err:',err);
          context.succeed({error: err});
       }
       else{
          console.log('presignedURL: ',url);
          context.succeed({uploadURL: url});                                           
       }                    
  });
4

1 回答 1

1

在这个问题上花了更多时间后，我意识到这不是服务器端的问题，而是发出请求的问题。我需要为我的 PUT 请求设置标头，因为当 AWS s3 收到任何请求时，它会检查该请求的签名与标头，因此如果您在创建 preSignedURL 时设置“ContentType”或“ACL”，那么您必须提供“Content-在您的请求中输入'和'x-amz-acl'。

这是我更新的“s3Params”

var s3Params = {
                Bucket: 'profile-images',
                Key: image.name,
                ACL: 'public-read',
                ContentType: image.type
            };

这是我的要求 更新的请求标头屏幕截图

最后，我从这个 post set headers for presigned PUT s3 requests 中得到了一些帮助

于 2016-12-31T09:17:11.570 回答