最近系统全面升级到https，之前AmazonS3大文件分片上传直接使用http://ip:9000访问minio的方式已然行不通，https服务器访问http资源会报Mixed Content混合内容错误。

    一般有两种解决方案，一是升级minio服务，配置ssl证书，支持https直接访问。另一种是使用现有的https证书配置nginx代理访问minio服务。

    我采用的是第二种。

1. application.yml 配置文件：

  # minio文件上传
  minio:
    minioUrl: http://localhost:9000
    minioName: admin
    minioPass: Aa1234admin
    bucketName: exam-bucket
    s3Endpoint: https://www.farling.com

s3Endpoint作为 AmazonS3访问minio的地址。

2. 客户端配置如下：

import com.amazonaws.ClientConfiguration;
import com.amazonaws.Protocol;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class AmazonS3Config {

    @Value(value = "${jeecg.minio.s3Endpoint}")
    private String endpoint;

    @Value(value = "${jeecg.minio.minioName}")
    private String minioName;

    @Value(value = "${jeecg.minio.minioPass}")
    private String minioPass;

    @Bean(name = "amazonS3Client")
    public AmazonS3 amazonS3Client() {
        //设置连接时的参数
        ClientConfiguration config = new ClientConfiguration();
        //设置连接方式，可选参数为HTTP和HTTPS
        config.setProtocol(endpoint.startsWith("https:") ? Protocol.HTTPS : Protocol.HTTP);
        //设置网络访问超时时间
        config.setConnectionTimeout(5000);
        config.setUseExpectContinue(true);
        AWSCredentials credentials = new BasicAWSCredentials(minioName, minioPass);
        //设置Endpoint
        AwsClientBuilder.EndpointConfiguration endPoint = new AwsClientBuilder.EndpointConfiguration(endpoint, Regions.US_EAST_1.name());
        AmazonS3 amazonS3 = AmazonS3ClientBuilder.standard()
                .withClientConfiguration(config)
                .withCredentials(new AWSStaticCredentialsProvider(credentials))
                .withEndpointConfiguration(endPoint)
                .withPathStyleAccessEnabled(true).build();
        return amazonS3;
    }

}

3. nginx配置文件增加如下内容：

 server {
         listen 443 ssl; 
         server_name www.farling.com; 
         ssl_certificate /home/ssl/www.farling.com_bundle.crt; 
         ssl_certificate_key  /home/ssl/www.farling.com.key; 
         ssl_session_timeout 5m;
         ssl_protocols TLSv1.2 TLSv1.3; 
         ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE; 
         ssl_prefer_server_ciphers on;

          location ^~ /exam-bucket {
          proxy_buffering off;
          proxy_request_buffering off;
          proxy_set_header Host $http_host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_http_version 1.1;
          proxy_set_header Connection "";
          chunked_transfer_encoding off;
          proxy_pass http://localhost:9000;
          client_max_body_size 1024m;
        }
   }

exam-bucket为minio的桶。 表示以exam-bucket桶开头的https请求都转发到minio。为什么要这样设置呢，因为AmazonS3客户端请求会带上bucketName。