jquery jsonp.js 下载 jquery.form.js下载

 

 

引用js文件包：jquery.form.js可以下载 http://malsup.com/jquery/form/#download

<script src="script/jquery.form.js"></script>

var formEle = $("#DefaultPicture_Create_Form");//一定要form.find不然与查询页面重复
                        var defaultPictureName = formEle.find("#DefaultPictureName").val().trim();
                        var defaultPictureID = formEle.find("#DefaultPictureID").val();
                        $("#DefaultPicture_Create_Form").ajaxSubmit({
                            url: "@Url.Action("Save", "DefaultPictureMaintenance")",
                            type: "post",
                            dataType: 'json',
                            data: {
                                DefaultPictureName: defaultPictureName,
                                DefaultPictureID: defaultPictureID
                            },
                            beforeSend: function () {
                                showLoading();
                            },
                            success: function (data) {
                                    debugger
                                if (data.Status == 200) {
                                    showOkClose(data.Message);
                                    closePopup();
                                    DefaultPictureSearch();
                                } else {
                                    showError(data.Message);
                                }
                        },
                            error: function (aa) {
                                debugger;
                            alert(aa);
                            },
                            complete: function () {
                                hideLoading();
                            }
                    });

 

 

 

<span >private</span> <span >byte</span><span >[] StreamToBytes(Stream stream)
    {
        </span><span >byte</span>[] bytes = <span >new</span> <span >byte</span><span >[stream.Length];
        stream.Read(bytes, </span><span style="color: rgba(128, 0, 128, 1)">0</span><span >, bytes.Length);
        </span><span >//</span><span > 设置当前流的位置为流的开始 </span>
        stream.Seek(<span style="color: rgba(128, 0, 128, 1)">0</span><span >, SeekOrigin.Begin);
        </span><span >return</span><span > bytes;
    }
    </span><span >///</span> <span ><summary></span>
    <span >///</span><span > 检查文件是否合格，不合格返回错误信息，合格返回空字符
    </span><span >///</span> <span ></summary></span>
    <span >///</span> <span ><param name="file"></param></span>
    <span >///</span> <span ><returns></returns></span>
    <span >private</span> <span >string</span><span > CheckUploadFile(HttpPostedFileBase file)
    {
        </span><span >//</span><span >判断文件必须小于2M 格式必须PNG JPG</span>
        <span >if</span> (file.ContentType != <span >"</span><span >image/png</span><span >"</span> && file.ContentType != <span >"</span><span >image/jpeg</span><span >"</span><span >)
        {
          </span><span >return</span>  <span >"</span><span >Upload failed! Picture type can only be JPG or PNG.</span><span >"</span><span >;
        }
        </span><span >if</span> (file.ContentLength / <span style="color: rgba(128, 0, 128, 1)">1024</span> > <span style="color: rgba(128, 0, 128, 1)">1024</span> * <span style="color: rgba(128, 0, 128, 1)">2</span><span >)
        {
            </span><span >return</span><span >"</span><span >Upload failed! Image size can not be greater than 2M.</span><span >"</span><span >;
        }
        </span><span >return</span> <span >""</span><span >;
    }
    </span><span >public</span> ActionResult Save(<span >int</span> DefaultPictureID, <span >string</span><span > DefaultPictureName, HttpPostedFileBase file)
    {
        </span><span >bool</span> isSaveSuccess = <span >true</span><span >;
        </span><span >var</span> DefaultPicture = <span >new</span><span > DefaultPictureItem();
        </span><span >if</span> (DefaultPictureID > <span style="color: rgba(128, 0, 128, 1)">0</span>)<span >//</span><span >编辑</span>
        { <span >//</span><span >编辑时可以运行File为Null，表示用户没有修改图片</span>
            <span >var</span> defaultPicModel = _defaultPictureService.GetByID(DefaultPictureID);<span >//</span><span >获取数据库中的</span>
            defaultPicModel.DefaultPictureName =<span > DefaultPictureName;
            defaultPicModel.UpdateBy </span>= <span >"</span><span >testUser</span><span >"</span><span >;
            defaultPicModel.UpdateDate </span>=<span > DateTime.Now;
            </span><span >if</span> (file!=<span >null</span><span >)
            {
                </span><span >//</span><span >判断文件必须小于2M 格式必须PNG JPG</span>
                <span >var</span> errorMsg =<span > CheckUploadFile(file);
                </span><span >if</span> (!<span >string</span><span >.IsNullOrEmpty(errorMsg))
                {
                    </span><span >return</span><span > Error(errorMsg);
                }
                </span><span >var</span> fileStream =<span > file.InputStream;
                defaultPicModel.DefaultPictureContent </span>=<span > StreamToBytes(fileStream);
                DefaultPicture.DefaultPictureHaskKey </span>=<span > Guid.NewGuid().ToString();
            }
            isSaveSuccess </span>=<span > _defaultPictureService.Update(defaultPicModel);
        }
        </span><span >else</span><span >
        {</span><span >//</span><span >新增</span>
            <span >if</span> (file == <span >null</span>)<span >//</span><span >新增的时候文件内容是必须得</span>