android - 在gradle构建期间检索AWS数据

Question

我正在尝试从AWS中获取一些值(例如，从cognito或s3)。我认为适当的是，您在build.gradle中定义了一个任务，该任务在gradle运行时的构建期间执行。我遵循了文档(https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/creating-clients.html)中编写的说明，但是当我尝试使用已导入的AWS依赖项中的方法时，出现“无法解析符号”错误。

这些导入的依赖项遵循本教程中给出的示例:

...
dependencies {
  implementation platform('software.amazon.awssdk:bom:2.X.X')

  implementation 'software.amazon.awssdk:kinesis'
  ...
}

代码中的gradle中发生错误(例如，无法识别KinesisClient):

def task = {
KinesisClient kinesisClient = KinesisClient.builder()
                .region(ARANDROMREGION)
                .build();
}

在构建期间如何从gradle访问AWS值？这是最基本的问题。如果我提供的信息不清楚，请告诉我。

Answer 1

这是使用Java S3 API和有效的 build.gradle 文件的完整示例(V1和V2)

JAVA V1
这是S3 Java代码:

package com.amazon.s3;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.CreateBucketRequest;
import com.amazonaws.services.s3.model.GetBucketLocationRequest;


import java.io.IOException;

public class CreateBucket {

    public static void main(String[] args) throws IOException {
        Regions clientRegion = Regions.DEFAULT_REGION;
        String bucketName = "My Bucket";

        try {

            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withCredentials(new ProfileCredentialsProvider())
                    .withRegion(clientRegion)
                    .build();

            if (!s3Client.doesBucketExistV2(bucketName)) {
                // Because the CreateBucketRequest object doesn't specify a region, the
                // bucket is created in the region specified in the client.
                s3Client.createBucket(new CreateBucketRequest(bucketName));

                // Verify that the bucket was created by retrieving it and checking its location.
                String bucketLocation = s3Client.getBucketLocation(new GetBucketLocationRequest(bucketName));
                System.out.println("Bucket location: " + bucketLocation);
            }
        } catch (AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process
            // it and returned an error response.
            e.printStackTrace();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
            e.printStackTrace();
        }
    }
}

这是 build.gradle 文件:

plugins {
    id 'java'
}

group 'AWSS3_Gra'
version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    implementation platform('com.amazonaws:aws-java-sdk-bom:1.11.228')
    implementation 'com.amazonaws:aws-java-sdk-s3'
    testCompile group: 'junit', name: 'junit', version: '4.11'
}

JAVA V2

这是S3 Java代码:

package com.example.s3;


import software.amazon.awssdk.core.SdkField;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.ListObjectsRequest;
import software.amazon.awssdk.services.s3.model.ListObjectsResponse;
import software.amazon.awssdk.services.s3.model.S3Exception;
import software.amazon.awssdk.services.s3.model.S3Object;
import java.util.List;
import java.util.ListIterator;


public class ListObjects {

    public static void main(String[] args) {


        String bucketName = "BucketName";
        Region region = Region.US_WEST_2;
        S3Client s3 = S3Client.builder()
                .region(region)
                .build();

        ListBucketObjects(s3, bucketName);
    }


    public static void ListBucketObjects(  S3Client s3, String bucketName ) {

        try {
            ListObjectsRequest listObjects = ListObjectsRequest
                    .builder()
                    .bucket(bucketName)
                    .build();

            ListObjectsResponse res = s3.listObjects(listObjects);
            List<S3Object> objects = res.contents();

            for (ListIterator iterVals = objects.listIterator(); iterVals.hasNext(); ) {
                S3Object myValue = (S3Object) iterVals.next();
                System.out.print("\n The name of the key is " + myValue.key());
                System.out.print("\n The object is " + calKb(myValue.size()) + " KBs");
                System.out.print("\n The owner is " + myValue.owner());
            }
        } catch (S3Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
    //convert bytes to kbs
    private static long calKb(Long val) {
        return val/1024;

    }

}

构建文件是:

group 'aws.test'
version '1.0'

apply plugin: 'java'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    implementation platform('software.amazon.awssdk:bom:2.10.30')
    implementation 'software.amazon.awssdk:s3'
    testImplementation group: 'junit', name: 'junit', version: '4.11'
}

希望这可以帮助...

PS-这是指向此信息的AWS DEV指南的链接: https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/setup-project-gradle.html