Upload document to SharePoint document library Using C# (CSOM)

if (context.Request.Files.Count > 0)
{
string strUrl = "http://XXXXXXXXXXX:8080/sites/home";
Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(delegate ()
{
using (SPSite site = new SPSite(strUrl))
{
using (SPWeb web = site.OpenWeb(""))
{
web.AllowUnsafeUpdates = true;
SPList list = web.Lists["文档"]; //考虑到中英文的影响，这个在英文状态下名称可能需要改变

                        if (list != null)
                        {
                            SPFolder folder = list.RootFolder;
                            HttpFileCollection files = context.Request.Files;
                            if (files.Count > 0)
                            {
                                for (int i = 0; i < files.Count; i++)
                                {
                                    HttpPostedFile file = files[i];
                                    string onlyName = System.IO.Path.GetFileName(file.FileName);
                                    string urlOfFile = DateTime.Now.ToString("yyyyMMddhhmmss") + onlyName;
                                    SPFile oFile = folder.Files.Add(urlOfFile, file.InputStream, true);
                                    oFile.Update();
                                }
                            }
                        }
                        web.AllowUnsafeUpdates = false;
                    }
                }
            });

            context.Response.Write("Success");
        }
        else
        {
            context.Response.Write("没有数据");
        }