jQuery上傳檔案和API接收儲存檔案
- jQuery程式碼是：

        <input type="file" id="files" name="files" multiple />
        <input type="button"  id="upload" value="Upload Selected Files" />

        $("#upload").click(function (evt) {
            var fileUpload = $("#files").get(0);
            var files = fileUpload.files;
            var data = new FormData();
            console.log("length=" + files.length);
            for (var i = 0; i < files.length ; i++) {
                data.append(files[i].name, files[i]);
            }
            data.append("1111", "222");
            $.ajax({
                type: "POST",
                url: "http://localhost:50090/api/test",
                contentType:false,
                dateType:"json",
                processData: false,
                data: data,
                success: function (json) {
                    alert(json);
                    var list = JSON.parse(json);
                    alert(list.res);
                },
                error: function () {
                    alert("There was error uploading files!");
                }
            });
        });
 

• API程式碼是：

      string path = "";
      long size = 0;
      int i = 0;
      var files = HttpContext.Request.Form.Files;
      if (files.Count > 0)
      {
          //可以寫遍歷files
          var file = files[0];
          string upload_path = Directory.GetCurrentDirectory() + "/wwwroot";
          DateTime now = DateTime.Now;
          if (Directory.Exists(upload_path + "/images/" + now.Year) == false)//如果不存在就建立file資料夾
          {
              Directory.CreateDirectory(upload_path + "/images/" + now.Year);
          }
          if (Directory.Exists(upload_path + "/images/" + now.Year + "/" + now.ToString("MMdd")) == false)//如果不存在就建立file資料夾
          {
              Directory.CreateDirectory(upload_path + "/images/" + now.Year + "/" + now.ToString("MMdd"));
          }
          upload_path = upload_path + "/images/" + now.Year + "/" + now.ToString("MMdd");//新的目錄
  
          var filename = ContentDispositionHeaderValue
                          .Parse(file.ContentDisposition)
                          .FileName
                          .Trim('"');
          string houzhui = filename.Substring(filename.IndexOf("."));
          var filenamenew = DateTime.Now.ToString("yyyyMMddHHmmssfff") + houzhui;
          filename = upload_path+"/" + filenamenew;
          path= "/images/" + now.Year + "/" + now.ToString("MMdd")+"/"+ filenamenew;
          size += file.Length;
          using (FileStream fs = System.IO.File.Create(filename))
          {
              file.CopyTo(fs);
              fs.Flush();
              i += 1;
          }
      }