Amazon web services AWS AppSync、Cognito&;S3

Amazon web services AWS AppSync、Cognito&;S3,amazon-web-services,amazon-s3,aws-appsync,aws-amplify,Amazon Web Services,Amazon S3,Aws Appsync,Aws Amplify,我想使用AWS AppSync上传图片。下面是我在这里看到的配置appsync应用程序的方法 模式: input PictureInput { ede_number: String! file: S3ObjectInput! } enum Visibility { public private } type S3Object { bucket: String! region: String! key: String! } input S3ObjectInput { buck

我想使用AWS AppSync上传图片。下面是我在这里看到的配置appsync应用程序的方法

模式:

input PictureInput {
 ede_number: String!
 file: S3ObjectInput!
}

enum Visibility {
 public
 private
}

type S3Object {
 bucket: String!
 region: String!
 key: String!
}

input S3ObjectInput {
 bucket: String!
 region: String!
 localUri: String
 visibility: Visibility
 key: String
 mimeType: String
}

type Picture {
 picture_id: String!
 ede_number: String!
 file: S3Object
}

type Mutation {
 addPicture(picture: PictureInput!): Picture
}
映射解析器:

{
 "version": "2017-02-28",
 "operation": "PutItem",
 "key": {
    "picture_id":  { "S" : "${util.autoId()}"}
  },
 #set( $attribs = $util.dynamodb.toMapValues($ctx.args.picture) )
 #set( $attribs.author =   $util.dynamodb.toString($context.identity.username) )
 #set( $attribs.company = $util.dynamodb.toString($context.identity.claims.get("custom:company")) )
 #set( $file = $context.args.picture.file )
 #set( $attribs.file = $util.dynamodb.toS3Object($file.key, $file.bucket, $file.region) )
 #set( $attribs.created_at = $util.dynamodb.toString($util.time.nowISO8601()) )

 "attributeValues": $util.toJson($attribs)
}
在我的react本机应用程序中,以下是如何配置AWS AppSync客户端:

Amplify.configure({
 Auth: {
   mandatorySignIn: true,
   region: config.REGION,
   userPoolId: config.COGNITO_GROUP_ID,
   identityPoolId: config.COGNITO_IDENTITY_ID,
   userPoolWebClientId: config.COGNITO_CLIENT_ID,
 },
});

const client = new AWSAppSyncClient({
 url: config.APPSYNC_URL,
 region: config.REGION,
 auth: {
   type: AUTH_TYPE.AMAZON_COGNITO_USER_POOLS,
   jwtToken: async () =>
   (await Auth.currentSession()).getIdToken().getJwtToken(),
   credentials: () => Auth.currentCredentials(),
},
complexObjectsCredentials: () => Auth.currentCredentials(),
});
最后,这是我如何进行变异的:

  let pickerResult = await ImagePicker.launchCameraAsync({
    aspect: [4, 3],
  });

   const picture = {
    ede_number: farm.ede_number,
    file: {
      localUri: pickerResult.uri,
      bucket: config.BUCKET,
      key: uuid(),
      region: config.REGION,
    },
  };

  addPicture({
    variables: {
      picture,
    },
    optimisticResponse: {
      __typename: 'Mutation',
      addPicture: {
        __typename: 'Picture',
        ...picture,
        file: {
          __typename: 'S3Object',
          ...picture.file,
        },
      },
    },
  });
DynamoDb表中添加了一个条目,但s3 bucket中没有添加任何内容:(

当我尝试这个的时候

Auth.currentCredentials().then(cred => console.log(cred));
控制台中有以下错误消息:

"cannot get guest credentials when mandatory signin enabled"
我已经将我的Cognoto用户添加到一个具有S3完全访问权限的arn角色的组中

我读过这个例子:

我不知道我的错误在哪里


谢谢,

该评论大致来源于您的“mandatorySignIn:true”标志。这需要在客户端尝试获取凭据时提供某种形式的登录令牌。我有两个后续问题:1)您是否在没有先登录的情况下,使用Amplify与任何其他AWS服务进行对话?2) 如果没有,您是否创建了您正在使用Cognito的AdminCreateUser API的用户?如果您登录到他们的控制台并查看用户页面,您可以看到用户状态。如果您看到该用户强制更改密码,则可能导致此情况。该用户未处于强制更改密码状态。我将深入学习aws代码。我有以下问题:Auth.js:1172{error:error:ParamValidator.fail(blob:…})的params中缺少必需的键'IdentityPoolId'