文件上传之Html5 + jQuery上传、asp.net web api接收

　　<div>
        <label for="fileUpload">
            选择文件
        </label>
        <br/>
        <input id="fileUpload" type="file" multiple="multiple" />
        <br />
        <input id="btnUploadFile" type="button" value="上传文件" />
    </div>

$("#btnUploadFile").on("click", function () {
                var data = new FormData(); 
                var files = $("#fileUpload").get(0).files;
                if(files.length > 0){
                    for (var i = 0; i < files.length;i++){
                        data.append(i.toString(), files[i]);
                    }
                }

                $.ajax({
                    type: "post",
                    url: "http://localhost:7247/api/fdfs/upload",
                    contentType: false,
                    cache: false,
                    currentType: false,
                    processData: false,
                    data: data,
                    success: function (res) {
                        alert(res);
                    }
                });
            });

         if(HttpContext.Current.Request.Files.AllKeys.Any())
            {
                var httpPostedFile = HttpContext.Current.Request.Files;
                if(httpPostedFile != null && httpPostedFile.Count > 0)
                {
                    foreach (string f in httpPostedFile)
                    {
                        var file = httpPostedFile[f];
                        //Todo：文件处理操作
                    }
                }
            }