java操作AWS S3一些坑记录

1，aws sdk jar版本不一致问题

一开始我在pom.xml中只配置了如下aws-java-sdk-s3

<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-s3 -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.11.506</version>
</dependency>

然后eclipse工程中如下截图，可以看到这3个jar版本不一致

然后我直接执行下面的代码put 字符串和上传文件

package com.hp.nova.common.tasksync.awss3;

import java.io.File;
import java.io.IOException;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.PutObjectRequest;

public class UploadObject {

    public static void main(String[] args) throws IOException {
        String clientRegion = "cn-northwest-1";
        String bucketName = "nova-test";
        String stringObjKeyName = "novatestkey";
        String fileObjKeyName = "test.txt";
        String fileName = "C:/nova_work_document/test.txt";

        try {
            AWSCredentials awsCredentials = new BasicAWSCredentials("Access key ID", "Secret access key");
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(clientRegion)
                    .withCredentials(new AWSStaticCredentialsProvider(awsCredentials))
                    .build();
        
            // Upload a text string as a new object.
            s3Client.putObject(bucketName, stringObjKeyName, "Uploaded String Object");
            
            // Upload a file as a new object with ContentType and title specified.
            PutObjectRequest request = new PutObjectRequest(bucketName, fileObjKeyName, new File(fileName));
            ObjectMetadata metadata = new ObjectMetadata();
            metadata.setContentType("plain/text");
            metadata.addUserMetadata("x-amz-meta-title", "someTitle");
            request.setMetadata(metadata);
            s3Client.putObject(request);
        }
        catch(AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process 
            // it, so it 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();
        }
    }
}

就会报错如下

Exception in thread "main" java.lang.NoSuchFieldError: SIGNING_REGION
at com.amazonaws.services.s3.AmazonS3Client.createRequest(AmazonS3Client.java:4654)
at com.amazonaws.services.s3.AmazonS3Client.createRequest(AmazonS3Client.java:4630)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1706)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:3819)
at com.hp.nova.common.tasksync.awss3.UploadObject111.main(UploadObject111.java:34)

解决方法：

在pom.xml中把如下都配置上

<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-s3 -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.11.506</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-kms -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-kms</artifactId>
<version>1.11.506</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-core -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-core</artifactId>
<version>1.11.506</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/jmespath-java -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>jmespath-java</artifactId>
<version>1.11.506</version>
</dependency>

 jar包的情况如下图

 

然后执行就可以成功了