js导出excel

function inportEx()
{
    $("#btnEx").text("导出中...");
    var fugNumber = "";//第几次随访
    var fugid = "";//随访组Id
    var fudid = "";//医生id
    var zTree = $.fn.zTree.getZTreeObj("tree");
    var nodes = zTree.getSelectedNodes();
    //获取选中节点的id值
    if (nodes.length > 0) {
        var pnode = nodes[0].getParentNode();
        if (pnode != null && pnode != "") {
            fugid = pnode.FuGID;
        }
        // fudid = nodes[0].FuGID;
    }
    //获取需要导出excel的患者的id
    var chek_value_id = [];
    $('input[name="checkItem"]:checked').each(function () {
        chek_value_id.push($(this).val());
    });

    var treeObj = $.fn.zTree.getZTreeObj("treeExcel");
    var nodes = treeObj.getCheckedNodes(true);

    //将患者id数组转化为字符串传到后台
    var pId = chek_value_id.join(",");
    $.ajax({
        url: '/Patient/SaveExcel',// 跳转到 action
        data: {
            pid: pId,
            pfid:pfid,
            fugid: fugid
        },
        type: 'get',
        cache: false,
        dataType: 'json',
        success: function (result) {
            console.log(result);
            if (checkSession(result)) {
                if (result != null && result.length > 0) {
                    console.log(result);
                    downloadFile(result);
                }
            }

        },
        complete: function (XMLHttpRequest, textStatus) {

            pfid = "";
            $('#myModal').modal("hide");
        }
    });
}
//文件下载
function downloadFile(url) {
    try {
        var elemIF = document.createElement("iframe");
        elemIF.src = url;
        elemIF.style.display = "none";
        document.body.appendChild(elemIF);
    } catch (e) {

    }
}

 public async Task<JsonResult> SaveExcel(string pId, string pfid, string fugid)
        {

            //使用js导出excel
            string dir = Server.MapPath("/");
            string serverUrl = HttpContext.Request.Url.Authority;
            string filePath = "Excel\\" + DateTime.Now.ToString("yyyyMMddhhmmss") + "\\";
            dir = dir + filePath;
            string fileName = "患者管理" + DateTime.Now.ToString("yyyyMMddhhmmss");
            string path = dir + fileName + ".xls";
            string rtnValue = "http://" + serverUrl + "/Excel/" + DateTime.Now.ToString("yyyyMMddhhmmss") + "/" + fileName + ".xls";
            if (!Directory.Exists(dir))
            {
                //创建文件所在目录
                Directory.CreateDirectory(dir);
            }
            //获取该随访组的随访计划和问卷信息
            List<FllowAndPlanName> list = new List<FllowAndPlanName>();
            list = await patientBLL.SelectFllowPlan(fugid);
            int listGroup = (list.GroupBy(x => x.FllowPlan_id)).Count();
            var _list = await patientBLL.getFllowInfoList(fugid);
            #region 绘制表头
            string[] arr = { "序号", "姓名", "性别", "年龄", "联系电话", "随访医生", "最近一次随访", "计划次数", "共随访次数", "病历数", "咨询数", "下次随访时间", "状态" };
            HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();
            //添加一个sheet1
            ISheet sheet1 = book.CreateSheet("Sheet1");
            CellRangeAddress m_region = new CellRangeAddress(, , , arr.Length - );  //合并0列的n--n+2行
            sheet1.AddMergedRegion(m_region);
            IRow row = sheet1.CreateRow();
            ICell cell = row.CreateCell();
            cell.SetCellValue("基本信息");
            ICellStyle cellstyle = book.CreateCellStyle();//设置垂直居中格式
            cellstyle.VerticalAlignment = VerticalAlignment.CENTER;//垂直居中
            cellstyle.Alignment = HorizontalAlignment.CENTER;//水平居中
            cell.CellStyle = cellstyle;

            IRow row2 = sheet1.CreateRow();
            for (int i = ; i < arr.Length; i++)
            {
                row2.CreateCell(i).SetCellValue(arr[i]);
            }

            var title = _list.GroupBy(x => x.FllowPlan_Name);
            List<string> planName = new List<string>();//随访计划名称
            List<string> fllowName = new List<string>();//问卷名称
            Dictionary<string, string> timu = new Dictionary<string, string>();//当前问卷下的问卷题目
            List<string> timuList = new List<string>();
            Dictionary<string, int> timuResult = new Dictionary<string, int>();//当前问卷下的答案的个数
            Dictionary<string, string> fllowInfo = new Dictionary<string, string>();//问卷名称和问卷id
            var listInfo = list.GroupBy(x => x.FollowInfo_ID).Select(g => g.First());
            foreach (var info in listInfo)
            {
                fllowInfo.Add(info.FollowInfo_Name, info.FollowInfo_ID);
            }
            //获取随访计划和问卷信息
            foreach (var item in title)
            {
                planName.Add(item.Key.ToString());
                foreach (var name in item)
                {
                    if (!fllowName.Contains(name.FollowInfo_Name))
                    {
                        fllowName.Add(name.FollowInfo_Name);
                    }
                    if (!timu.ContainsKey(name.Question_Name))
                    {
                        timu.Add(name.Question_Name, name.FollowInfo_Name);
                    }
                }
            }
            //获取当前问卷下的题目的个数
            var tGroup = timu.GroupBy(x => x.Value);
            foreach (var item in tGroup)
            {
                foreach (var count in item)
                {
                    if (!timuResult.ContainsKey(count.Value))
                    {
                        timuResult.Add(count.Value, item.Count());
                    }
                }
            }
            //获取题目集合
            foreach (KeyValuePair<string, string> item in timu)
            {
                timuList.Add(item.Key);
            }
            int rowOne = arr.Length;
            int rowTwo = arr.Length;
            //用来控制题目的列数
            List<int> timuNum = new List<int>();
            IRow row3 = sheet1.CreateRow();
            IRow row4 = sheet1.CreateRow();
            int num = ;
            //绘制随访计划列
            for (int i = ; i < planName.Count; i++)
            {
                //绘制问卷列
                for (int j = arr.Length; j < fllowName.Count + arr.Length; j++)
                {
                    //获取当前问卷下面的题目个数
                    int r = timuResult[fllowName[j - arr.Length].ToString()];
                    sheet1.AddMergedRegion(new CellRangeAddress(, , rowTwo, rowTwo + r - ));
                    ICell cellFllow = row4.CreateCell(rowTwo);
                    cellFllow.CellStyle = cellstyle;
                    cellFllow.SetCellValue(fllowName[j - arr.Length].ToString());
                    rowTwo += r;
                }
                sheet1.AddMergedRegion(new CellRangeAddress(, , rowOne, rowOne + timu.Count - ));
                ICell cellPlan = row.CreateCell(rowOne);
                cellPlan.CellStyle = cellstyle;
                cellPlan.SetCellValue(planName[i]);
                rowOne += timu.Count;
                num += ;

            }
            //绘制题目列
            for (int u = ; u < planName.Count; u++)
            {
                for (int k = ; k < timuList.Count; k++)
                {

                    ICell cellTimu = row2.CreateCell(timuNum.Count + arr.Length);
                    cellTimu.CellStyle = cellstyle;
                    cellTimu.SetCellValue(timuList[k].ToString());
                    timuNum.Add(k);

                }
            }

            #endregion
            #region Databtable的建立
            DataTable ExData = new DataTable();

            var tablleTitle = await patientBLL.getFllowInfoList(fugid);
            var infoCode = tablleTitle.GroupBy(x => x.FollowInfo_ID).Select(p => (new { Infoid = p.Key }));
            List<string> infoCodeList = new List<string>();
            foreach (var code in infoCode)
            {
                infoCodeList.Add(code.Infoid);
            }
            ExData.Columns.Add("序号", System.Type.GetType("System.String"));
            ExData.Columns.Add("姓名", System.Type.GetType("System.String"));
            ExData.Columns.Add("性别", System.Type.GetType("System.String"));
            ExData.Columns.Add("年龄", System.Type.GetType("System.String"));
            ExData.Columns.Add("联系电话", System.Type.GetType("System.String"));
            ExData.Columns.Add("随访医生", System.Type.GetType("System.String"));
            ExData.Columns.Add("最近一次随访", System.Type.GetType("System.String"));
            ExData.Columns.Add("计划次数", System.Type.GetType("System.String"));
            ExData.Columns.Add("共随访次数", System.Type.GetType("System.String"));
            ExData.Columns.Add("病历数", System.Type.GetType("System.String"));
            ExData.Columns.Add("咨询数", System.Type.GetType("System.String"));
            ExData.Columns.Add("下次随访时间", System.Type.GetType("System.String"));
            ExData.Columns.Add("状态", System.Type.GetType("System.String"));
            //把选择的随访计划和问卷信息做处理
            string[] singleInfo = pfid.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
            int timeYear = DateTime.Now.Year;
            string[] singlePid = pId.Split(new char[] { ',' }, StringSplitOptions.None);
            //当前随访组下的随访计划
            for (int w = ; w < planName.Count + ; w++)
            {
                for (int t = ; t < timuList.Count; t++)
                {
                    ExData.Columns.Add(timuList[t] + w, System.Type.GetType("System.String"));

                }

            }
            //选择患者的个数
            for (int p = ; p < singlePid.Length; p++)
            {
              //  var excutePlanid = await  patientBLL.getExcutePlan_ID(singlePid[p]);
               DataRow ExRow = ExData.NewRow();

                for (int m = ; m < planName.Count + ; m++)
                { 

                    #region 获取数据

                    var res = await patientBLL.SavaExcel(singlePid[p], fugid);
                    ExRow["序号"] = p + ;
                    ExRow["姓名"] = res[].Patient_ID.ToString();
                    ExRow["性别"] = res[].Patient_Sex.ToString();
                    ExRow["年龄"] = (timeYear - res[].age.Value.Year).ToString() + "岁";
                    ExRow["联系电话"] = res[].Login_Account.ToString();
                    ExRow["随访医生"] = res[].fudname.ToString();
                    ExRow["最近一次随访"] = res[].followUp_Last_time.ToString();
                    ExRow["计划次数"] = res[].planCount.ToString();
                    ExRow["共随访次数"] = res[].followUpCount.ToString();
                    ExRow["病历数"] = res[].AdvisoryRecordCount.ToString();
                    ExRow["咨询数"] = res[].medicalCount.ToString();
                    ExRow["下次随访时间"] = res[].followUp_Next_time.ToString();
                    ExRow["状态"] = res[].FuP_Status == "" ? "在访" : (res[].FuP_Status == "" ? "失访" : (res[].FuP_Status == "-2" ? "死亡" : "出组"));

                    for (int i = ; i < singleInfo.Length; i++)
                    {

                        string[] info = singleInfo[i].Split(new char[] { ',' });
                        //选择了随访计划
                        if (info[] == m.ToString() && info.Length == )
                        {
                            var quesResult = await patientBLL.SavaExcel(singlePid[p], fugid);
                            var querRes = quesResult.Where(x => x.fllowplanid.Equals(info[]));
                            foreach (var item in querRes)
                            {
                                if (item.Question_Name != null) {
                                    string index = item.Question_Name + m;
                                    ExRow[index] = item.Choice_Content;
                                }

                            }
                        }
                        //选择了随访计划的某一个问卷
                        if (info[] == m.ToString() && info.Length == )
                        {
                            var querResult_1 = await patientBLL.SavaExcel(singlePid[], fugid);
                            var querRes_1 = querResult_1.Where(x => x.QBClass_Code.Equals(info[]) && x.fllowplanid.Equals(info[]));
                            foreach (var item in querRes_1)
                            {
                                if (item.Question_Name != null)
                                {
                                    string index = item.Question_Name + m;
                                    ExRow[index] = item.Choice_Content;

                                }
                            }
                        }
                        //如果一次随访计划下有多个问卷，选择了一个或者多个问卷
                        if (info[] == m.ToString() && info.Length < )
                        {
                            string[] condition = info[].Split(new char[] { '*' }, StringSplitOptions.RemoveEmptyEntries);
                            for (int k = ; k < condition.Length; k++)
                            {
                                string[] singCondtion = condition[k].ToString().Split(new char[] { '@' });
                                var querResult_2 = await patientBLL.SavaExcel(singlePid[], fugid);
                                // List<excelModel> querRs = new List<excelModel>();
                                for (int n = ; n < singCondtion.Length; n++)
                                {
                                    var querRes_2 = querResult_2.Where(x => x.QBClass_Code.Equals(singCondtion[]) && x.fllowplanid.Equals(info[])).ToList();
                                    foreach (var item in querRes_2)
                                    {
                                        if (item.Question_Name != null)
                                        {
                                            string index = item.Question_Name + m;
                                            ExRow[index] = item.Choice_Content;
                                        }
                                    }
                                    //querRs.AddRange(querRes_2);
                                }
                            }
                        }
                    }
                    #endregion
                }
                ExData.Rows.Add(ExRow);
            }
            //将数据写入到excel
            for (int i = ; i < ExData.Rows.Count; i++)
            {
                row = sheet1.CreateRow(i + );
                ExData.Rows[i][] = (i + ).ToString();
                for (int j = ; j < ExData.Columns.Count; j++)
                {
                    ICell ce = row.CreateCell(j);
                    ce.SetCellValue(ExData.Rows[i][j].ToString());
                }

            }
            #endregion

            using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))
            {
                book.Write(fs);
                fs.Close();
            }
            return Json(rtnValue, JsonRequestBehavior.AllowGet);

        }