使用 Spring 将文件上传到 AWS S3

Question

Uploading files to AWS S3 using spring boot works great when it executed without proxy and when I add proxy in the VM args it fails with following error,

Internal Server Error (Service: Amazon S3; Status Code: 500; Error Code: 500 Internal Server Error; Request ID: null; S3 Extended Request ID: null; Proxy: 192.168.1.171)

Below are the vm arguments that I have provided,

-Dhttp.proxyHost=192.168.1.171 -Dhttp.proxyPort=9999 -Dhttps.proxyHost=192.168.1.171 -Dhttps.proxyPort=9999

When I started to execute the package the AWS SDK auto initialize the proxy as it finds in the args list and it prints in the console

com.amazonaws.http.AmazonHttpClient - Configuring Proxy. Proxy Host: 192.168.1.171 Proxy Port: 9999

I can not remove the proxy because I am using Oauth2 authentication in spring security. Is there any way that I can disable auto initializing the proxy in AWS SDK?

Answer 1

In effect to communicate over a network "endpoints" are an address, but links require "connections" so it may be more of a connection/connected "host conflict" by configuration. For example i could have both a webserver and a DB that takes requests via http direct but it depends if they are configured for each other and/or to be connected through an irq to network to anything else.

Answer 2

I was able to resolve the issue after contacting AWS, I had to configure the method “setNoneProxyHosts (String nonProxyHosts)” method in the ClientConfiguration class. This sets the optional hosts the client will access without going through the proxy. The parameter – “nonProxyHosts” takes the hosts the client will access without going through the proxy. Please follow this link here for more information about the class and the method: https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/ClientConfiguration.html#setNonProxyHosts-java.lang.String-

Based on the instructions provided by AWS Support I had amended the config and added following;

 public ClientConfiguration clientConfiguration() { final ClientConfiguration clientConfiguration = new ClientConfiguration(); clientConfiguration.setNonProxyHosts("*.s3.<ZONE>.amazonaws.com|*.s3-<ZONE>.amazonaws.com"); return clientConfiguration; }