标签：access type pre htm sed iter cat eof show
先创建一个web项目，在根目录放置需要转换的json文件，直接读取静态Json文件加载数据进行转换，代码如下：
string Json = string.Empty; List<object> list = new List<object>(); string filePath = Server.MapPath("/***.json");//指定目录下的json文件(当前为根目录) using (FileStream fs = new FileStream(filePath, FileMode.Open, System.IO.FileAccess.Read, FileShare.ReadWrite)) { using (StreamReader sr = new StreamReader(fs, Encoding.GetEncoding("gb2312"))) { Json = sr.ReadToEnd().ToString(); } }
接着引入Newtonsoft.Json 文件，将Json字符串转Datatable
DataTable dt = (DataTable)JsonConvert.DeserializeObject(Json, typeof(DataTable));
然后将Datable转成Dataset
DataSet ds = new DataSet(); ds.Tables.Add(dt);
最后直接用Response导出结果：
ExportResult(ds, "Json.xls");//Json.xls名字自定义
用到的ExportResult方法代码如下：
/// <summary> /// 将ds转换成excel /// </summary> /// <param name="ds"></param> /// <param name="excelName"></param> public void ExportResult(DataSet ds, string excelName) { HttpContext.Current.Response.Clear(); HttpContext.Current.Response.Charset = ""; HttpContext.Current.Response.ContentType = "application/vnd.ms-xls"; StringWriter stringWrite = new StringWriter(); HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite); DataGrid dg = new DataGrid(); dg.DataSource = ds; dg.DataBind(); dg.RenderControl(htmlWrite); HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(excelName)); HttpContext.Current.Response.Write(stringWrite.ToString()); HttpContext.Current.Response.End(); }
以上为楼主总结，如有更好的方法请留言推荐，谢谢！
*：如需转发请标注来源，谢谢！
标签：access type pre htm sed iter cat eof show
原文地址：https://www.cnblogs.com/HenryWEI/p/9804679.html
