前端form post方式 訪問webapi 導出Aspose excel，以及單元格合併 Cells.Merge

前端 post 表單方式

function export_Interact() {
        var url = "https://XXXXXXX:8083/sjjmeet/api/SignPerson/ExportListInteract?Token=123";

        var form = $("<form>");//定義一個form表單
        form.attr("style", "display:none");
        form.attr("target", "");
        form.attr("method", "post");//請求類型
        form.attr("action", url);//請求地址
        $("body").append(form);//將表單放置在web中

        GetSerachData_Interact();

        var input1 = $("<input>");
        input1.attr("type", "hidden");
        input1.attr("name", "orderField");
        input1.attr("value", "CreateTime");
        form.append(input1);

        var input2 = $("<input>");
        input2.attr("type", "hidden");
        input2.attr("name", "orderType");
        input2.attr("value", "desc");
        form.append(input2);


        form.submit();//表單提交
    }

後臺api

創建正常的api 控制器

        [HttpPost]
        public string ExportListTotal([FromBody] SignSearchModel model)
        {
            try
            {
                StringBuilder strSql = new StringBuilder();
                strSql.Append("select * from aaa where  1=1 ");
                strSql.Append(GetUserType(model.UserType));

                if (model != null)
                {
                    if (!string.IsNullOrEmpty((model.StartTime)))
                    {
                        strSql.Append(" and g.BeginTime >= '" + model.StartTime + "'");
                    }

                    if (!string.IsNullOrEmpty((model.EndTime)))
                    {
                        strSql.Append(" and g.BeginTime <= '" + model.EndTime + "'");
                    }
                }

                strSql.Append(" group by p.UserID, p.UserName, p.FieldName, p.PTName, p.XiaowName order by FieldName");
                //==以上 拷貝GetListInteract代碼
                var result = GetDataList<SignPersonTotal>(model, strSql);

                DataTable AssetModelName = new DataTable();
                AssetModelName.Columns.Add("領域");
                AssetModelName.Columns.Add("序號");


                AssetModelName.Columns.Add("平臺");
                AssetModelName.Columns.Add("小微");
                AssetModelName.Columns.Add("姓名");

                AssetModelName.Columns.Add("出席");
                AssetModelName.Columns.Add("請假");
                AssetModelName.Columns.Add("缺席");

                foreach (var item in result)
                {
                    DataRow dr = AssetModelName.NewRow();
                    dr["領域"] = item.FieldName;
                    dr["序號"] = item.Num;

                    dr["平臺"] = item.PTName;
                    dr["小微"] = item.XiaowName;
                    dr["姓名"] = item.UserName;

                    dr["出席"] = item.Attend;
                    dr["請假"] = item.Leave;
                    dr["缺席"] = item.Absent;

                    AssetModelName.Rows.Add(dr);
                }
                Workbook workbook = new Workbook();
                Worksheet cells = workbook.Worksheets[0];

                Cells cellss = workbook.Worksheets[0].Cells;

                Style titleStyle = workbook.CreateStyle();// workbook.Styles[workbook.Styles.Add()];//新增樣式  
                titleStyle.HorizontalAlignment = TextAlignmentType.Center;//文字居中  
                titleStyle.Font.Name = "微軟雅黑";
                titleStyle.Font.IsBold = true;
                titleStyle.Font.Size = 11;

                Style contentStyle = workbook.Styles[workbook.Styles.Add()];
                contentStyle.HorizontalAlignment = TextAlignmentType.Center;
                contentStyle.Font.Name = "微軟雅黑";
                //contentStyle.IsTextWrapped = true;//單元格內容自動換行 
                contentStyle.VerticalAlignment = TextAlignmentType.Center;


                for (int i = 0; i < AssetModelName.Columns.Count; i++)
                {
                    cells.Cells[0, i].PutValue(AssetModelName.Columns[i].ColumnName);
                    cells.Cells[0, i].SetStyle(titleStyle);
                    cells.Cells.SetColumnWidth(i, 20);
                }

                for (int i = 0; i < AssetModelName.Rows.Count; i++)
                {
                    //合併領域，從第0列 第2行 開始
                    for (int j = 0; j < AssetModelName.Columns.Count; j++)
                    {
                        //mergeCells(a, b, c, d) 單元格合併函數
                      

                        //第2行以後（不含表頭），第0列的時候
                        if (i >= 1 && j == 0)
                        {
                            //判斷 當前單元格領域是否和 上一行領域 0列相同，
                            var current = AssetModelName.Rows[i][j].ToString();
                            var up = AssetModelName.Rows[i - 1][j].ToString();

                            if (current == up)
                            {
                                //合併行。 列不變，行合併， c,d 不能爲0，最小1. 合併兩行 就是 c=2
                                cells.Cells.Merge(i, j, 2, 1);
                                cells.Cells[i + 1, j].SetStyle(contentStyle);
                            }
                            else
                            {
                                cells.Cells[i + 1, j].PutValue(AssetModelName.Rows[i][j].ToString());
                                cells.Cells[i + 1, j].SetStyle(contentStyle);
                            }
                        }
                        else
                        {
                            cells.Cells[i + 1, j].PutValue(AssetModelName.Rows[i][j].ToString());
                            cells.Cells[i + 1, j].SetStyle(contentStyle);
                        }

                    }
                }

                Stream st = workbook.SaveToStream();
                st.Seek(0, SeekOrigin.Begin);
                var contentDisposition = "";
                switch (HttpContext.Current.Request.Browser.Browser)
                {
                    case "IE":
                    case "Chrome":
                        contentDisposition = "出席統計" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xlsx";
                        break;
                    case "Safari":
                        contentDisposition = "出席統計" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xlsx";
                        break;
                    default:
                        contentDisposition = HttpUtility.UrlEncode("出席統計" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xlsx");
                        break;
                }
                System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
                workbook.Save(response, contentDisposition, Aspose.Cells.ContentDisposition.Attachment, new Aspose.Cells.XlsSaveOptions(Aspose.Cells.SaveFormat.Xlsx));
                HttpContext.Current.Response.Clear();

                HttpContext.Current.Response.AddHeader("Content-Disposition", contentDisposition);
                HttpContext.Current.Response.AddHeader("Content-Length", st.Length.ToString());
                HttpContext.Current.Response.ContentType = "application/octet-stream";
                HttpContext.Current.Response.BinaryWrite(workbook.SaveToStream().ToArray());
                HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
                long chunkSize = 4096;
                byte[] buffer = new byte[chunkSize];
                long dataToRead = 0;
                dataToRead = st.Length;
                while (dataToRead > 0)
                {
                    if (HttpContext.Current.Response.IsClientConnected)
                    {
                        int length = st.Read(buffer, 0, Convert.ToInt32(chunkSize));
                        HttpContext.Current.Response.OutputStream.Write(buffer, 0, length);
                        HttpContext.Current.Response.Flush();
                        dataToRead -= length;
                    }
                    else
                    {
                        dataToRead = -1;
                    }
                }
                HttpContext.Current.Response.Close();
                return "success";
            }
            catch (Exception e)
            {
                return e.Message;
            }
        }