详解Jquery EasyUI tree 的异步加载(遍历指定文件夹,根据文件夹内的文件生成tree)
Jquery EasyUI tree 的异步加载(遍历指定文件夹,根据文件夹内的文件生成tree)具体代码如下:
private void SMT(HttpContext context) { string SqlConnection82 = System.Configuration.ConfigurationManager.AppSettings["LocalConnectionString"]; string path = context.Server.MapPath(@"~/CISWeb/SMT_SOP"); string id = string.Empty; List<string> filesNameList = getFiles(path); if (filesNameList.Count > 0) context.Response.Write(ListToJson(filesNameList,id)); else { context.Response.Write("0"); } } /// <summary> /// 范围指定目录下的 文件夹/文件 数量 /// </summary> /// <param name="path"></param> /// <returns></returns> private static List<string> getFiles(string path) { DirectoryInfo SMT_SOP = new DirectoryInfo(path); List<string> allFileList = new List<string>(); DirectoryInfo[] allDir = SMT_SOP.GetDirectories();//获取文件夹数量 foreach (DirectoryInfo d in allDir) { allFileList.Add("0|" + d.Name); } FileInfo[] allFile = SMT_SOP.GetFiles();//获取文件数量 foreach (FileInfo fi in allFile) { allFileList.Add("1|" + fi.Name); } return allFileList; } /// <summary> /// 遍历指定文件夹,根据文件夹内的文件返回JSON /// </summary> /// <param name="filesNameList"></param> /// <param name="id">第一次调用这个方法的时候,id=""</param> /// <returns></returns> public string ListToJson(List<string> filesNameList,string id) { StringBuilder sb2 = new StringBuilder(); sb2.Append("["); for (int i = 0; i < filesNameList.Count; i++) { if (filesNameList[i].ToString().Split('|')[0] == "0") { sb2.Append("{ \"id\":" +id+ (i + 1).ToString() + ",\"text\":\"" + filesNameList[i].ToString().Split('|')[1] + "\",\"state\":\"closed\",\"children\": ["); sb2.Append("]},"); } else { sb2.Append("{\"id\":"+id + (i + 1).ToString() + ",\"text\":\"" + String.Format(filesNameList[i].ToString().Split('|')[1]) + "\"},"); } } sb2.Remove(sb2.Length - 1, 1); sb2.Append("]"); return sb2.ToString(); }
前台
$.ajax({ type: "post", url: "../../ajax/Handler.ashx?action=SMT", data: {}, success: function (result) { $("#menuDiv").dialog("open");//jQuery UI中的模态窗口 var treeData = eval(result); $("#tt").tree({ data: treeData}) } })
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