配置信息：

• SDK AWSS3: 2.33.4
• Language: OC

全部代码如下：

本机搭建的minio服务

AWSDDLog.sharedInstance.logLevel = AWSDDLogLevelVerbose;
    [AWSDDLog addLogger:AWSDDTTYLogger.sharedInstance];
    AWSStaticCredentialsProvider *provider = [[AWSStaticCredentialsProvider alloc]
                                              initWithAccessKey:@"WLZO9XjvNdBjsbKppE36" secretKey:@"FpFIhYUoxpGGTUiSrHMUl78ugSuMQ5k2ZscFht4W"];
    AWSEndpoint *minioEndpoint = [[AWSEndpoint alloc] initWithRegion:AWSRegionUSWest2 service:AWSServiceS3 URL:
                                  [NSURL URLWithString:@"http://192.168.65.202:9000"]];
    AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSWest2
                                                                                    endpoint:minioEndpoint credentialsProvider:provider localTestingEnabled:true];
    configuration.maxRetryCount = 1;
    configuration.timeoutIntervalForRequest = 10;
    configuration.timeoutIntervalForResource = 10;
    AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = configuration;
    
    [AWSS3 registerS3WithConfiguration:configuration forKey:@"USWest2S3"];
    
    NSMutableString *dataString = [NSMutableString new];
    for (int32_t i = 1; i < 10000000; i++) {
        [dataString appendFormat:@"%d\n", i];
    }
    NSData *testData = [dataString dataUsingEncoding:NSUTF8StringEncoding];
    
    AWSS3 *S3 = [AWSS3 S3ForKey:@"USWest2S3"];
    
    NSString *fileName= @"ios_test.txt";
   
    AWSS3PutObjectRequest *request = [[AWSS3PutObjectRequest alloc] init];
    request.bucket = @"ios.bucket.test";
    request.key = fileName;
    request.contentType = @"text/plain";
    request.ACL = AWSS3ObjectCannedACLPublicRead;
    request.body = testData;
    request.contentLength = @(testData.length);
    [S3 putObject:request completionHandler:^(AWSS3PutObjectOutput * _Nullable response, NSError * _Nullable error) {
        
        if (!error) {
            NSLog(@"succeed");
        }else{
            NSLog(@"failed: %@", error.localizedDescription);
        }
    }];

注意：

• 我不确定是否是SDK的bug，还是我的request设置有问题，因为网上以及官方都没有相关参考代码，在源码中我也没找到原因；必须更改SDK中AWSSignature文件中的第239行代码，其中一个判断设计到授权信息的设置，默认是会连接失败，因为我参考了flutter的minio，其中x-amz-content-sha256的值是不对的，所以必须得更改这个判断；
  图片总是上传失败，只能贴这个代码了

if (nil == stream) {

• 服务端bucket的名称设置格式要注意，不然会导致url拼接错误，最好用我那种方式；