c#创建文件并写入数据导出到前端
[AcceptVerbs("GET")] public ActionResult GetColumnLinkCallBack() { //允许ajax跨域 Response.AppendHeader("Access-Control-Allow-Origin", "*"); List<object> list = new List<object>(); var createTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"); var json1 = new { url = "http://baidu.com", columnName = "test", level = 1, webId = 202307240913, createTtime = createTime, isColumn = 0, flag = 1 }; list.Add(json1); string outPath = ContextPath + @"template\columnlink\栏目链接.jsonp"; FileStream fs = null; if (!System.IO.File.Exists(outPath)) { fs = new FileStream(outPath, FileMode.Create, FileAccess.Write); } else { fs = new FileStream(outPath, FileMode.Open, FileAccess.Write); } //开始写入 StreamWriter sw = new StreamWriter(fs); string lines = ConvertJsonString(JsonConvert.SerializeObject(list)); sw.WriteLine(lines); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); return File(outPath, "application/vnd.ms-excel;charset=utf-8", "栏目链接导出.jsonp"); }
/// <summary> /// 字符串转json字符串 /// </summary> /// <param name="str"></param> /// <returns></returns> private static string ConvertJsonString(string str) { //格式化json字符串 JsonSerializer serializer = new JsonSerializer(); TextReader tr = new StringReader(str); JsonTextReader jtr = new JsonTextReader(tr); object obj = serializer.Deserialize(jtr); if (obj != null) { StringWriter textWriter = new StringWriter(); JsonTextWriter jsonWriter = new JsonTextWriter(textWriter) { Formatting = Formatting.Indented, Indentation = 4, IndentChar = ' ' }; serializer.Serialize(jsonWriter, obj); return textWriter.ToString(); } else { return str; } }
吾乃代码搬运工,侵联删
分类:
c#
【推荐】国内首个AI IDE,深度理解中文开发场景,立即下载体验Trae
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 全程不用写代码,我用AI程序员写了一个飞机大战
· MongoDB 8.0这个新功能碉堡了,比商业数据库还牛
· 记一次.NET内存居高不下排查解决与启示
· 白话解读 Dapr 1.15:你的「微服务管家」又秀新绝活了
· DeepSeek 开源周回顾「GitHub 热点速览」