Question

您好我想在MVC中创建文件并将JSON数据插入该文件中。用于创建该文件的文件夹位置是

〜/内容/文件

请提出任何建议

Answer 1

public FileResult SaveJsonDataToFile(string JsonString)
{
    #region " Set Path of File "
    // ASP.NET MVC4
    string FilePath = HttpContext.Server.MapPath("~/Content/File/jsondata.json");

    // ASP.NET MVC1 -> MVC3
    // use this HttpContext.Current.Server.MapPath("~/Content/File/jsondata.json");

    // Ref : http://stackoverflow.com/questions/1268738/asp-net-mvc-find-absolute-path-to-the-app-data-folder-from-controller
    #endregion

    #region " Save Data to File "
    using (System.IO.StreamWriter FWriter = new StreamWriter(FilePath, true))
    {
        FWriter.Write(JsonString);
    }
    #endregion

    #region " Read File to FileData "
    byte[] FileData = null;
    FileData = System.IO.File.ReadAllBytes(FilePath);
    #endregion

    #region " Delete File "
    if (System.IO.File.Exists(FilePath))
        System.IO.File.Delete(FilePath);
    #endregion

    //  return if you need to send file to client
    return File(FileData, "text/json" /* i don't sure for json file mimetype */);
}

此示例代码为C＃.Net MVC

希望这有帮助！

Answer 2

试试这个......

public class Countries {
 public string Country {  get;  set; }
 public string CountryCode {  get;  set; }
 public string Currency {  get;  set; }
 public string CurrencyCode {  get;  set; }
}
List < Countries > _country = new List < Countries > ();
_country.Add(new Countries() Country = "Pakistan",
 CountryCode = "PK",
 Currency = "Rupee",
 Code = "PKR"
};

string fileContent = JsonConvert.SerializeObject(country);

OR

string fileContent = @ "[ {
'Country': 'Nigeria',
'CountryCode': 'NG',
'Currency': 'Naira',
'Code': 'NGN'
}, {
'Country': 'Pakistan',
'CountryCode': 'PK',
'Currency': 'Rupee',
'Code': 'PKR'
}]";

string filePath = System.Web.HttpContext.Current.Server.MapPath("~/Content/File/jsondata.json");
try {
 if (System.IO.File.Exists(filePath))
  System.IO.File.Delete(filePath);
 var W = new StreamWriter(filePath);
 W.WriteLine(fileContent);
 W.Close();

} catch (Exception e) {
 Console.WriteLine(e);
 throw;
}

如何在MVC中创建文件并将json数据插入其中

2 个答案: