ASP.NET Coreは7牛画像のアップロードを簡単に実現(FormDataとBase 64)

ASP.NET Coreは7牛画像のアップロードを簡単に実現(FormDataとBase 64)
七牛画像アップロードSDK(.NETバージョン):https://developer.qiniu.com/kodo/sdk/1237/csharp UpoladServiceサンプルコード:

public class UpoladService : IUpoladService
{
    private readonly static string[] _p_w_picpathExtensions = new string[] { ".jpg", ".png", ".gif", ".jpeg", ".bmp" };
    private AppSettings _appSettings;

    public UpoladService(IOptions appSettings)
    {
        _appSettings = appSettings.Value;
    }

    public async Task UploadStream(Stream stream, string fileName, AppType appType)
    {
        if (stream == null)
        {
            return SubmitResult.Fail("   null");
        }
        if (string.IsNullOrWhiteSpace(fileName))
        {
            return SubmitResult.Fail("      ");
        }
        try
        {
            var extensionName = fileName.Substring(fileName.LastIndexOf("."));
            if (!_p_w_picpathExtensions.Contains(extensionName.ToLower()))
            {
                return SubmitResult.Fail("      ");
            }
            var generateFileName = $"{DateTime.Now.ToString("yyyyMMddHHmmssfff-")}{Guid.NewGuid().GetHashCode().ToString().Replace("-", string.Empty)}{extensionName}";
            var saveKey = $"wl/{appType.ToString().ToLower()}/{generateFileName}";

            //   (  )        Mac
            //            Settings ，    AccessKey SecretKey
            //      ，       AccessKey SecretKey
            Mac mac = new Mac(_appSettings.AccessKey, _appSettings.SecretKey);
            //     ，   
            // https://developer.qiniu.com/kodo/manual/put-policy
            PutPolicy putPolicy = new PutPolicy();
            //        "  "  (             )，    SCOPE = "BUCKET:KEY"
            // putPolicy.Scope = bucket + ":" + saveKey;
            putPolicy.Scope = _appSettings.Bucket;
            //        (            )   
            putPolicy.SetExpires(3600);
            //                 ，     （       ）    
            //putPolicy.DeleteAfterDays = 1;

            //       ，  
            // https://developer.qiniu.com/kodo/manual/upload-token            
            string jstr = putPolicy.ToJsonString();
            string token = Auth.CreateUploadToken(mac, jstr);

            FormUploader fu = new FormUploader();
            var result = await fu.UploadStreamAsync(stream, saveKey, token);
            if (result.Code == 200)
            {
                return SubmitResult.Success($"{_appSettings.Domain}/{saveKey}");
            }
            return SubmitResult.Fail("    ");
        }
        catch (Exception ex)
        {
            return SubmitResult.Fail($"    ：{ex.Message}");
        }
    }
}

UploadControllerサンプルコード:

[EnableCors("default")]
[Route("upload")]
public class UploadController : WebApiController
{
    private IUpoladService _upoladService;

    public UploadController(IUpoladService upoladService)
    {
        _upoladService = upoladService;
    }

    [Route("{appType}/stream")]
    [HttpPost]
    public async Task UploadByStream(AppType appType)
    {
        if (Request.Form.Files.Count == 0)
        {
            return Fail("     ");
        }
        var file = Request.Form.Files[0];
        var result = await _upoladService.UploadStream(file.OpenReadStream(), file.FileName, appType);
        if (result.IsSuccess)
        {
            return Ok(new { pic_url = result.Data, is_success = true });
        }
        return Fail(result.Message);
    }

    [Route("{appType}/base64")]
    [HttpPost]
    public async Task UploadByBase64([FromBody]JObject data, AppType appType)
    {
        var p_w_picpathBase64 = data["p_w_picpath_base64"].ToObject();
        var fileName = data["file_name"].ToObject();
        if (!string.IsNullOrWhiteSpace(p_w_picpathBase64))
        {
            var reg = new Regex("data:p_w_picpath/(.*);base64,");
            p_w_picpathBase64 = reg.Replace(p_w_picpathBase64, "");
            byte[] p_w_picpathByte = Convert.FromBase64String(p_w_picpathBase64);
            var stream = new MemoryStream(p_w_picpathByte);

            var result = await _upoladService.UploadStream(stream, fileName, appType);
            if (result.IsSuccess)
            {
                return Ok(new { pic_url = result.Data, is_success = true });
            }
            return Fail(result.Message);
        }
        return Json(new { success = false, result = "     ！" });
    }
}

JSアップロード画像サンプルコード:
    
    
    
$(document).ready(function () {
    $("#upload").click(function (evt) {
        var fileUpload = $("#files").get(0);
        var files = fileUpload.files;
        var data = new FormData();
        for (var i = 0; i < files.length; i++) {
            data.append(files[i].name, files[i]);
        }
        $.ajax({
            type: "POST",
            url: "http://localhost:5002/upload/avatar/stream",
            processData: false,
            contentType: false,
            data: data,
            success: function (data) {
                if (data.is_success) {
                    console.log(data.pic);
                }
                else {
                    console.log(data.msg);
                }
                console.log(data);
            },
            error: function () {
                console.log("There was error uploading files!");
            }
        });
    });
    $("#uploadBase64").click(function (evt) {
        var fileUpload = $("#files").get(0);
        var files = fileUpload.files;
        var data = {};
//ベース64の生成
        var reader = new FileReader();
        reader.readAsDataURL(files[0]);
        reader.onload = function () {
            data.p_w_picpath_base64 = reader.result;
            data.file_name = files[0].name;
            $.ajax({
                type: "POST",
                url: "http://localhost:5002/upload/avatar/base64",
                contentType: 'application/json; charset=utf-8',
                data: JSON.stringify(data),
                dataType: 'json',
                success: function (data) {
                    if (data.is_success) {
                        console.log(data.pic);
                    }
                    else {
                        console.log(data.msg);
                    }
                    console.log(data);
                },
                error: function () {
                    console.log("There was error uploading files!");
                }
            });
            return reader.result;
        };
        reader.onerror = function (error) {
            console.log('Error: ', error);
        };
    });
});