.net 文件操作的一点记录

1.

string cnnstring = System.Configuration.ConfigurationSettings.AppSettings["Oracle"].ToString();

OracleConnection conn=new OracleConnection(cnnstring);

OracleCommand cmd=new OracleCommand("select spxxid,spdt from jt_j_spxx where spdt is not null order by spxxid desc ",conn);

//OracleCommand cmd=new OracleCommand("select spxxid,spdt from jt_j_spxx order by spxxid desc ",conn);

//OracleCommand cmd=new OracleCommand("select spxxid,spdt from jt_j_spxx where spxxid='756336553'",conn);

conn.Open();

OracleDataReader myReader;

myReader = cmd.ExecuteReader();

while(myReader.Read())

{

fpath = Server.MapPath(Request.ApplicationPath)+"/image/"+myReader.GetString(0)+".jpg";

fs =new FileStream(fpath, FileMode.OpenOrCreate, FileAccess.Write);

bw = new BinaryWriter(fs);

outbyte = (byte[])myReader[1];

bw.Write(outbyte);

bw.Flush();

bw.Close();

fs.Close();

}

myReader.Close();

conn.Close();

2.

upfile(System.Configuration.ConfigurationSettings.AppSettings["ForumUrl"]+"/Movie/default.aspx","~/Movie/index.html");

public void upfile(string url,string mappath)

{

try

{

Uri UrlPage= new Uri(url);

HttpWebRequest hwReq = (HttpWebRequest)WebRequest.Create(UrlPage);

hwReq.Timeout = 50000 ;

HttpWebResponse hwRes = (HttpWebResponse)hwReq.GetResponse();

hwReq.Method = "Post";

hwReq.KeepAlive = true;

StreamWriter fs =new StreamWriter(Server.MapPath(mappath),false,System.Text.Encoding.UTF8);

StreamReader fs2=new StreamReader(hwRes.GetResponseStream(),System.Text.Encoding.UTF8);

string nextline;

while((nextline=fs2.ReadLine())!=null)

{

fs.WriteLine(nextline);

}

fs.Close();

fs2.Close();

Response.Write("<script>alert('生成成功');</script>");

}

catch

{

Response.Write("<script>alert('生成超时，请重新生成');</script>");

}

}

3.

if(File.Exists(Server.MapPath("../zthtml/temp/"+str))==false)

{

Response.Write("<script>alert('没有找到模板，请确定模板的名字正确！');</script>");

}

else

{

StreamReader objReader = new StreamReader(Server.MapPath("~/zthtml/temp/"+str),System.Text.Encoding.GetEncoding("gb2312"));

string sLine="";

sLine=objReader.ReadToEnd();

objReader.Close();

}StreamWriter sw=new StreamWriter(Server.MapPath("~/zthtml/"+str.Substring(0,str.IndexOf(".",1))+".shtml"),false,System.Text.Encoding.GetEncoding("gb2312"),sLine.Length);

sw.Write(sLine);