Java Spring Cloud AWS代码找不到S3文件

我不明白为什么SpringAWS云代码找不到我的S3文件。我的SpringbeanXML配置中有“aws上下文：上下文资源加载器”。我原以为“s3:”资源的使用会像spring一样无缝，“classpath:”资源很容易使用

我知道AWS权限和凭据配置正确，因为如果我直接使用AmazonS3Client，我可以检索有问题的文件

从Spring开始，AWS凭证将自动找到

以下是正在工作的Amazon S3客户端代码：

public static void main(String [] args) throws IOException {
  AmazonS3 s3Client = new AmazonS3Client(new DefaultAWSCredentialsProviderChain());
  System.out.println(s3Client.doesObjectExist("MyBucket", "sample/resource.txt"));
  S3Object object = s3Client.getObject(new GetObjectRequest("MyBucket", "sample/resource.txt"));
  String result = StreamUtils.copyToString(object.getObjectContent(), Charset.forName("UTF-8"));
  System.out.println(result);    
}

以下是Spring Cloud AWS等效文件，它找不到相同的S3文件：

public class App {
    public static void main(String[] args) throws IOException {
        final AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext("app-context.xml");
        ctx.scan("bdf.sample.spring");
        S3Resource s3Resource = ctx.getBean("S3Resource", S3Resource.class);
        InputStream resource = s3Resource.getResource("s3://MyBucket/sample/resource.txt");
        String result = StreamUtils.copyToString(resource, Charset.forName("UTF-8"));
        System.out.println(result);
    }
}

我在S3Resource构造函数中有一个System.out.println，它显示了这个ResourceLoader：

org.springframework.context.annotation.AnnotationConfigApplicationContext

我得到的例外是：

线程“main”java.io.FileNotFoundException中的异常：无法打开类路径资源[s3://MyBucket/sample/resource.txt]，因为它不存在

资源：

package bdf.sample.spring;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.stereotype.Service;
import java.io.IOException;
import java.io.InputStream;

@Service("S3Resource")
public class S3Resource  {
    private final ResourceLoader resourceLoader;

    @Autowired
    public S3Resource(ResourceLoader resourceLoader) {
        this.resourceLoader = resourceLoader;
        System.out.println(resourceLoader.getClass());
    }
    public InputStream getResource(String path) throws IOException {
        final Resource resource = resourceLoader.getResource(path);
        return resource.getInputStream();
    }
}

最后是我的SpringXML

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aws-context="http://www.springframework.org/schema/cloud/aws/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/cloud/aws/context
        http://www.springframework.org/schema/cloud/spring-cloud-aws-context.xsd">

    <aws-context:context-resource-loader/>
    <aws-context:context-region region="us-east-1"/>
</beans>

一个问题是，对S3的ResourceLoader支持没有读取region属性