1.时间戳转为C#格式时间
////// 时间戳转为C#格式时间 /// /// Unix时间戳格式 ///C#格式时间 private DateTime GetTime(string timeStamp) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(timeStamp + "0000"); TimeSpan toNow = new TimeSpan(lTime); return dtStart.Add(toNow); }
2.获取验证码
public Image GetImg(string url) { if (string.IsNullOrWhiteSpace(url)) { url = string.Format("http://ms.baihe.com/checkcode/defaultImageService?0.{0}", DateTime.Now.Ticks); } cookieCheckCode = ""; var item = new HttpItem() { URL = url, //Encoding = System.Text.Encoding.GetEncoding("GBK"), Method = "get", //IsToLower = false, Expect100Continue = false,//代理时用这个 Cookie = _cookie, Timeout = 100000, ReadWriteTimeout = 30000, UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0", ContentType = "text/html", ResultType = ResultType.Byte }; var result = http.GetHtml(item); if (result.Cookie != null) cookieCheckCode += result.Cookie.StartsWith("PHPSESSID") ? result.Cookie.Substring(result.Cookie.IndexOf(',') + 1) : result.Cookie; return byteArrayToImage(result.ResultByte); } private Image byteArrayToImage(byte[] Bytes) { using (var ms = new MemoryStream(Bytes)) { return Bitmap.FromStream(ms, true); } } 3.正则表使用类
Regex re = new Regex(@"&uid=(\d+)\"" class=\""yellow\"">(.+)", RegexOptions.None); MatchCollection mc = re.Matches(resulthtml.Html); var list = new List(); foreach (Match match in mc) { var uid = match.Groups[1].Value; var nick = match.Groups[2].Value; list.Add(new User { uid = uid, nickname = nick }); }
4.获取时间
public long GetTimeLikeJS() { var st = new DateTime(1970, 1, 1); var t = (DateTime.Now.ToUniversalTime() - st); return (long)t.TotalMilliseconds; } 5.另一线程操作主线程的控件
this.Invoke((Action)delegate() { this.textBox1.Text = "登录成功"; }); .net 2.0里的匿名委托
this.Invoke((EventHandler)delegate { button.Text = i.ToString(); }); 另：BackgroundWorker 组件用来执行诸如数据库事务、文件下载等耗时的异步操作
6.Json对象转换
JArray array = JArray.Parse(json); JToken token = array[0]; var total = token["total"]; var users = token["list"].Children(); foreach (var item in users) { var user = JsonConvert.DeserializeObject (item.ToString()); int age = user.age; } 7.赶集网登录
HttpHelper http = new HttpHelper(); HttpItem item = null; item = new HttpItem() { URL = string.Format("https://passport.ganji.com/login.php?callback=jQuery{0}&username={1}&password={2}",GetTime(),textBox2.Text,textBox3.Text),//URL Referer = "https://passport.ganji.com/login.php?next=/",//来源URL 可选项 }; item.Header.Add("x-requested-with", "XMLHttpRequest"); //主要就是这一句，赶集服务器只接受ajax请求。 HttpResult result = http.GetHtml(item); string cookie = result.Cookie.Replace("path=/;", "").Replace(",", "%2c"); //登录成功访问我发布的信息测试 item = new HttpItem() { URL = "http://www.ganji.com/vip/my_post_list.php",//URL Method = "get",//URL 可选项 默认为Get Cookie = cookie,//字符串Cookie 可选项 }; result = http.GetHtml(item); string html = result.Html; textBox1.Text = html + "\r\n" ;
8.C# Unicode编码/解码
//如果post josn 乱码或服务器不能正常接收HttpItem item = new HttpItem() { URL = url,// "http://159.142.15.196:8089/api/Users/Post_ErpUsers",//URL 必需项 Method = "post",//URL 可选项 默认为Get IsToLower = false,//得到的HTML代码是否转成小写 可选项默认转小写 Cookie = "",//字符串Cookie 可选项 Referer = "",//来源URL 可选项 // Postdata = json, //System.Web.HttpUtility.UrlEncode(json, Encoding.UTF8),//Post数据 可选项GET时不需要写 Timeout = 100000,//连接超时时间 可选项默认为100000 ReadWriteTimeout = 30000,//写入Post数据超时时间 可选项默认为30000 UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)",//用户的浏览器类型，版本，操作系统 可选项有默认值 ContentType = "application/json",//返回类型 可选项有默认值 Allowautoredirect = false,//是否根据301跳转 可选项 PostdataByte = UTF8Encoding.UTF8.GetBytes(json), PostDataType = PostDataType.Byte };
9.C#解析Html组件
组件名称：HtmlAgilityPack
xpath获取元素："//*[@class=\"dc-intro\"]/ul/li" ，查找class="dc-intro"下ul下的li
HtmlWeb web = new HtmlWeb(); var doc = web.Load(string.Format("{0}/soft/{1}.html", baseUrl, id)); var node = doc.GetElementbyId("form2"); var titleNode = node.SelectSingleNode("//*[@class=\"rr-title dc-title clearfix\"]/h1"); string title = titleNode.InnerText; string kfyy = node.SelectNodes("//*[@class=\"dc-intro\"]/ul/li")[0].LastChild.InnerText;//开发语言 string slsj = node.SelectNodes("//*[@class=\"dc-intro\"]/ul/li")[1].LastChild.InnerText;//收录时间 string sqxy = node.SelectNodes("//*[@class=\"dc-intro\"]/ul/li")[2].LastChild.InnerText;//授权协议 string czxt = node.SelectNodes("//*[@class=\"dc-intro\"]/ul/li")[3].LastChild.InnerText;//支持的操作系统 string rjpjHtml = node.SelectNodes("//*[@class=\"dc-intro\"]/ul/li")[4].InnerHtml;//软件评级 var level = Regex.Matches(rjpjHtml, "xx01.png").Count;//级数 string content = node.SelectSingleNode("//*[@class=\"markdown-body entry-content\"]").InnerHtml; string rjsy = node.SelectNodes("//*[@class=\"dc-info\"]/a")[0].Attributes["href"].Value; string rjxz = node.SelectNodes("//*[@class=\"dc-info\"]/a")[1].Attributes["href"].Value;