来说说阿里云的上传功能，最开始是想要自己封装一下OSSClient，类似于单例类的存在，折腾了两三天，也没有解决这个问题，原因在于 异步请求，block回调，等各种的不同步，因为自己太菜了，这一块后面再多看看资料 学习一下。。。
阿里云的官方文档上很清楚的，比较坑的是 我们的NSURLRequest直接请求，拿不到token的数据，因为需要网页先行登录才可以。
最后调整为对接口进行封装，似乎采用这种方式的比较多，使用获得的STS令牌 再去向阿里云上传图片。
多图上传
```
+ (void)upLoadImagesToAliyun:(NSArray *)imagesArr imageNames:(NSArray *)imageNames completionBlock:(void(^)(NSMutableArray *errorIndexs,UploadImageState state))completeBlock{
[HHHomeData requestAliyunSTSInfoBlock:^(HHAliyunSTSModel *STSModel, NSString *errorStr) {
dispatch_queue_t uploadQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_group_t uploadGroup = dispatch_group_create();
//异步上传所有图片
__block NSMutableArray *errorIndexs = [NSMutableArray array];
for (int i = 0; i < imagesArr.count; i++) {
dispatch_group_async(uploadGroup, uploadQueue, ^{
UIImage *image = imagesArr[i];
NSString *imageName = imageNames[i];
//上传图片的二进制数据
OSSPutObjectRequest *put = [OSSPutObjectRequest new];
put.bucketName = STSModel.bucket;
// put.objectKey = [NSString stringWithFormat:@"%@%@",STSModel.objectKeyPrefix,imageName];
put.objectKey = imageName;
HHLog(@"bucket:%@====上传时的objectKey==%@",put.bucketName,put.objectKey);
put.uploadingData = [image getImageDataWithCompress];
put.contentType = @"image/jpeg";
put.contentMd5 = [OSSUtil base64Md5ForData:put.uploadingData];
// HHLog(@"data===%lu",(unsigned long)put.uploadingData.length);
OSSClient *client = [self getClientWithAccessKeyId:STSModel.accessKeyId secrectKey:STSModel.accessKeySecret token:STSModel.securityToken];
// HHLog(@"==id=%@,secrec>>%@",STSModel.accessKeyId,STSModel.accessKeySecret);
OSSTask *putTask = [client putObject:put];
// putTask = [client presignPublicURLWithBucketName:STSModel.bucket withObjectKey:put.objectKey];
put.uploadProgress = ^(int64_t bytesSent,int64_t totalByteSent, int64_t totalBytesExpectedToSend) {
HHLog(@"%lld, %lld, %lld", bytesSent, totalByteSent, totalBytesExpectedToSend);
if (totalByteSent == [[image getImageDataWithCompress] length]) {
}
};
[putTask continueWithBlock:^id _Nullable(OSSTask * _Nonnull task) {
if (!task.error) {
HHLog(@"第%d张上传成功",i);
}else{
HHLog(@"第%d张上传失败,error==>%@",i,task.error.localizedDescription);
[errorIndexs addObject:@(i)];
}
return nil;
}];
[putTask waitUntilFinished];
});
}
dispatch_group_notify(uploadGroup, uploadQueue, ^{
HHLog(@"上传结束后的通知");
if (errorIndexs.count == 0) {
if (completeBlock) {
completeBlock(nil,UploadImageSuccess);
}
}else{
if (completeBlock) {
completeBlock(errorIndexs,UploadImageFailed);
}
}
});
}];
}
```