写了个java连接ceph进行对象存储的demo，结果报如下的错：

Exception in thread "main" com.amazonaws.services.s3.model.AmazonS3Exception: null (Service: Amazon S3; Status Code: 400; Error Code: InvalidArgument; Request ID: null), S3 Extended Request ID: null

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1529)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1167)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:948)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:661)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:635)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:618)

at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$300(AmazonHttpClient.java:586)

at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:573)

at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:445)

at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4039)

at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3976)

at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:776)

at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:748)

花了好一会功夫，找到原因：com.amazonaws的依赖包是最新版，向下支持不好

com.amazonaws

aws-java-sdk-s3

1.11.39

解决办法：更改maven依赖如下即可，将version改设为一个较老的版本：

com.amazonaws

aws-java-sdk-s3

1.10.69