在程序中修改客戶端的機器時間,我認為有2種方法:
1,用命令方式.net time. 由於本人比較愚笨,這種方法木有學會.
2,獲取一個網絡時間,然后修改. 這里就比較簡單,容易理解了, 這里用win32的方法修改機器時間.那么,怎么獲取網絡時間呢,這里又可以分成2種方法,一中是直接讀取一個url,獲取內容,然后轉換成我們需要時間,第二種是socket,連接服務器,讀取數據流.
我在項目中,運用的第二種方法來修改客戶端的機器時間.獲取網絡時間,用的是第一種,讀取url方式.
#region 獲取北京時間
/// <summary>
/// 獲取北京時間
/// </summary>
/// <returns></returns>
public static DateTime GetBjDatetime()
{
try
{
//http://www.beijing-time.org/time.asp
string html = string.Empty;
try
{
html = FetchUrl("自己網站的一個地址,提供數據輸出", Encoding.UTF8);
}
catch
{
html = FetchUrl("http://www.beijing-time.org/time.asp", Encoding.UTF8);
}
string year = RegexMatch(html, "nyear=");
string month = RegexMatch(html, "nmonth=");
string day = RegexMatch(html, "nday=");
string hour = RegexMatch(html, "nhrs=");
string minite = RegexMatch(html, "nmin=");
string second = RegexMatch(html, "nsec=");
DateTime dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second);
return dt;
}
catch (Exception ex)
{
throw ex;
}
}
private static string RegexMatch(string originalText, string patternStr)
{
Match m = Regex.Match(originalText, patternStr + "(?<v>\\d+);", RegexOptions.IgnoreCase);
return m.Success ? m.Groups["v"].ToString() : string.Empty;
}
private static string FetchUrl(string url, Encoding coding)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
Stream stm = null;
StreamReader reader = null;
try
{
request = (HttpWebRequest)WebRequest.Create(url);
request.Timeout = 1000 * 3;//設置超時時間為3秒
response = (HttpWebResponse)request.GetResponse();
stm = response.GetResponseStream();
reader = new StreamReader(stm, coding);
string content = reader.ReadToEnd();
return content;
}
catch (Exception exp)
{
throw exp;
}
finally
{
if (reader != null) reader.Close();
if (stm != null) stm.Close();
if (response != null) response.Close();
}
}
#endregion
還有一種socket獲取網絡時間代碼也貼出來
/// <summary> /// tcp 獲取網絡時間 /// </summary> /// <returns></returns> public static DateTime GetNetworkTime() { System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient(); client.Connect("132.163.4.102", 13); System.Net.Sockets.NetworkStream ns = client.GetStream(); byte[] bytes = new byte[1024]; int bytesRead = 0; bytesRead = ns.Read(bytes, 0, bytes.Length); client.Close(); char[] sp = new char[1]; sp[0] = ' '; DateTime dt = new DateTime(); string str1; str1 = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead); string[] s; s = str1.Split(sp); if (s.Length >= 2) { dt = System.DateTime.Parse(s[1] + " " + s[2]);//得到標准時間 dt = dt.AddHours(8);//得到北京時間 } return dt; }
下面是win32方法修改本機時間
[StructLayout(LayoutKind.Sequential)]
public class SystemTime
{
public ushort year;
public ushort month;
public ushort dayofweek;
public ushort day;
public ushort hour;
public ushort minute;
public ushort second;
public ushort milliseconds;
public SystemTime(ushort _year, ushort _month, ushort _dayofweek, ushort _day, ushort _hour, ushort _minute, ushort _second, ushort _milliseconds)
{
this.year = _year;
this.month = _month;
this.dayofweek = _dayofweek;
this.day = _day;
this.hour = _hour;
this.minute = _minute;
this.second = _second;
this.milliseconds = _milliseconds;
}
}
public class ReSetLocalTimeFromNetwork
{
[DllImport("Kernel32.dll", SetLastError = true)]
private static extern Boolean SetLocalTime([In, Out] SystemTime st);
[DllImport("kernel32", SetLastError = true)]
private static extern int GetLastError();
/// <summary>
/// 設置系統時間
/// </summary>
/// <param name="newdatetime">新時間</param>
/// <returns></returns>
private static bool SetSysTime(SystemTime sysTime)
{
bool flag = SetLocalTime(sysTime);
if (flag == false)
{
int intValue = GetLastError();
throw new Exception(intValue.ToString() + " error, can't set local time.");
}
return flag;
}
/// <summary>
/// 轉換時間
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static SystemTime ConvertDatetime(DateTime dt)
{
return new SystemTime(Convert.ToUInt16(dt.Year), Convert.ToUInt16(dt.Month), Convert.ToUInt16(dt.DayOfWeek)
, Convert.ToUInt16(dt.Day), Convert.ToUInt16(dt.Hour), Convert.ToUInt16(dt.Minute), Convert.ToUInt16(dt.Second),
Convert.ToUInt16(dt.Millisecond));
}
}
最后,把這個類上傳上來
View Code
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.Runtime.InteropServices; using System.Net.Sockets; using System.Net; using System.IO; namespace Somnus { [StructLayout(LayoutKind.Sequential)] public class SystemTime { public ushort year; public ushort month; public ushort dayofweek; public ushort day; public ushort hour; public ushort minute; public ushort second; public ushort milliseconds; public SystemTime(ushort _year, ushort _month, ushort _dayofweek, ushort _day, ushort _hour, ushort _minute, ushort _second, ushort _milliseconds) { this.year = _year; this.month = _month; this.dayofweek = _dayofweek; this.day = _day; this.hour = _hour; this.minute = _minute; this.second = _second; this.milliseconds = _milliseconds; } } public class ReSetLocalTimeFromNetwork { [DllImport("Kernel32.dll", SetLastError = true)] private static extern Boolean SetLocalTime([In, Out] SystemTime st); [DllImport("kernel32", SetLastError = true)] private static extern int GetLastError(); public static bool SetSysTime() { return SetSysTime(ConvertDatetime(GetBjDatetime())); } /// <summary> /// 設置系統時間 /// </summary> /// <param name="newdatetime">新時間</param> /// <returns></returns> private static bool SetSysTime(SystemTime sysTime) { bool flag = SetLocalTime(sysTime); if (flag == false) { int intValue = GetLastError(); throw new Exception(intValue.ToString() + " error, can't set local time."); } return flag; } /// <summary> /// 轉換時間 /// </summary> /// <param name="dt"></param> /// <returns></returns> public static SystemTime ConvertDatetime(DateTime dt) { return new SystemTime(Convert.ToUInt16(dt.Year), Convert.ToUInt16(dt.Month), Convert.ToUInt16(dt.DayOfWeek) , Convert.ToUInt16(dt.Day), Convert.ToUInt16(dt.Hour), Convert.ToUInt16(dt.Minute), Convert.ToUInt16(dt.Second), Convert.ToUInt16(dt.Millisecond)); } #region 獲取北京時間 /// <summary> /// 獲取北京時間 /// </summary> /// <returns></returns> public static DateTime GetBjDatetime() { try { //http://www.beijing-time.org/time.asp string html = string.Empty; try { html = FetchUrl("自己的網站輸出一個時間", Encoding.UTF8); } catch { html = FetchUrl("http://www.beijing-time.org/time.asp", Encoding.UTF8); } string year = RegexMatch(html, "nyear="); string month = RegexMatch(html, "nmonth="); string day = RegexMatch(html, "nday="); string hour = RegexMatch(html, "nhrs="); string minite = RegexMatch(html, "nmin="); string second = RegexMatch(html, "nsec="); DateTime dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second); return dt; } catch (Exception ex) { throw ex; } } private static string RegexMatch(string originalText, string patternStr) { Match m = Regex.Match(originalText, patternStr + "(?<v>\\d+);", RegexOptions.IgnoreCase); return m.Success ? m.Groups["v"].ToString() : string.Empty; } private static string FetchUrl(string url, Encoding coding) { HttpWebRequest request = null; HttpWebResponse response = null; Stream stm = null; StreamReader reader = null; try { request = (HttpWebRequest)WebRequest.Create(url); request.Timeout = 1000 * 3;//設置超時時間為3秒 response = (HttpWebResponse)request.GetResponse(); stm = response.GetResponseStream(); reader = new StreamReader(stm, coding); string content = reader.ReadToEnd(); return content; } catch (Exception exp) { throw exp; } finally { if (reader != null) reader.Close(); if (stm != null) stm.Close(); if (response != null) response.Close(); } } /// <summary> /// tcp 獲取網絡時間 /// </summary> /// <returns></returns> public static DateTime GetNetworkTime() { System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient(); client.Connect("132.163.4.102", 13); System.Net.Sockets.NetworkStream ns = client.GetStream(); byte[] bytes = new byte[1024]; int bytesRead = 0; bytesRead = ns.Read(bytes, 0, bytes.Length); client.Close(); char[] sp = new char[1]; sp[0] = ' '; DateTime dt = new DateTime(); string str1; str1 = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead); string[] s; s = str1.Split(sp); if (s.Length >= 2) { dt = System.DateTime.Parse(s[1] + " " + s[2]);//得到標准時間 dt = dt.AddHours(8);//得到北京時間 } return dt; } #endregion } }
OK,全部完事,並非原創,本人代碼也比較粗糙,功能很實用.