from:
GeoJSON is a format for encoding a variety of geographic data structures.
GeoJSON 是用于描述地理空间信息的数据格式。GeoJSON 不是一种新的格式，其语法规范是符合 JSON 格式的，只不过对其名称进行了规范，专门用于表示地理信息。
GeoJSON 的最外层是一个单独的对象（object）。这个对象可表示：
几何体（Geometry）。
特征（Feature）。
特征集合（FeatureCollection）。
最外层的 GeoJSON 里可能包含有很多子对象，每一个 GeoJSON 对象都有一个 type 属性，表示对象的类型，type 的值必须是下面之一。
Point：点。
MultiPoint：多点。
LineString：线。
MultiLineString：多线。
Polygon：面。
MultiPolygon：多面。
GeometryCollection：几何体集合。
Feature：特征。
FeatureCollection：特征集合。
在线工具
在线生成 GeoJSON：http://geojson.io/
简化、转换 GeoJSON 和 TopoJSON：
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | <! DOCTYPE html> < html lang="en"> < head > < meta charset="utf-8"> < title >中国地图</ title > </ head > < style > </ style > < body > < script src="d3.v3.min.js"></ script > < script > var width = 1000; var height = 1000; var svg = d3.select("body").append("svg") .attr("width", width) .attr("height", height) .append("g") .attr("transform", "translate(0,0)"); var projection = d3.geo.mercator() .center([107, 31]) .scale(850) .translate([width/2, height/2]); var path = d3.geo.path() .projection(projection); var color = d3.scale.category20(); d3.json("china.geojson", function(error, root) { if (error) return console.error(error); console.log(root.features); svg.selectAll("path") .data( root.features ) .enter() .append("path") .attr("stroke","#000") .attr("stroke-width",1) .attr("fill", function(d,i){ return color(i); }) .attr("d", path ) .on("mouseover",function(d,i){ d3.select(this) .attr("fill","yellow"); }) .on("mouseout",function(d,i){ d3.select(this) .attr("fill",color(i)); }); }); </ script > </ body > </ html > |
https://www.webdesignerdepot.com/2009/06/50-great-examples-of-data-visualization/
哲学管理(学)人生, 文学艺术生活, 自动(计算机学)物理(学)工作, 生物(学)化学逆境, 历史(学)测绘(学)时间, 经济(学)数学金钱(理财), 心理(学)医学情绪, 诗词美容情感, 美学建筑(学)家园, 解构建构(分析)整合学习, 智商情商(IQ、EQ)运筹(学)成功.---Geovin Du(涂聚文）
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using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.Web; using System.Drawing; using System.Drawing.Imaging; using System.Drawing.Drawing2D; namespace WL.Infrastructure.Common { public class Common { private static int seed = 1; private static int key_seed = 1; private static int noseed = 1; private static int domseed = 1; private static int geseed = 1; /// <summary> /// 取得客户端真实IP。如果有代理则取第一个非内网地址 /// </summary> public static string IPAddress { get { string result = String.Empty; result = HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ]; if (result != null && result != String.Empty) { //可能有代理; if (result.IndexOf( "." ) == -1) //没有“.”肯定是非IPv4格式; result = null ; else { if (result.IndexOf( "," ) != -1) { //有“,”，估计多个代理。取第一个不是内网的IP。; result = result.Replace( " " , "" ).Replace( "'" , "" ); string [] temparyip = result.Split( ",;" .ToCharArray()); for ( int i = 0; i < temparyip.Length; i++) { if (IsIPAddress(temparyip[i]) && temparyip[i].Substring(0, 3) != "10." && temparyip[i].Substring(0, 7) != "192.168" && temparyip[i].Substring(0, 7) != "172.16." ) { return temparyip[i]; //找到不是内网的地址 ; } } } else if (IsIPAddress(result)) //代理即是IP格式; return result; else result = null ; //代理中的内容 非IP，取IP ; } } string IpAddress = (HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ] != null && HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ] != String.Empty) ? HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ] : HttpContext.Current.Request.ServerVariables[ "REMOTE_ADDR" ]; if ( null == result || result == String.Empty) result = HttpContext.Current.Request.ServerVariables[ "REMOTE_ADDR" ]; if (result == null || result == String.Empty) result = HttpContext.Current.Request.UserHostAddress; if (result == "::1" ) { result = "127.0.0.1" ; } return result; } } /// <summary> /// 绕过cnd获取真实ip /// </summary> /// <returns></returns> public static string GetUserIp() { string userIP = "未获取用户IP" ; try { if (HttpContext.Current == null || HttpContext.Current.Request == null || HttpContext.Current.Request.ServerVariables == null ) return "" ; string CustomerIP = "" ; //CDN加速后取到的IP CustomerIP = HttpContext.Current.Request.Headers[ "Cdn-Src-Ip" ]; if (! string .IsNullOrEmpty(CustomerIP)) { return CustomerIP; } CustomerIP = HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ]; if (!String.IsNullOrEmpty(CustomerIP)) return CustomerIP; if (HttpContext.Current.Request.ServerVariables[ "HTTP_VIA" ] != null ) { CustomerIP = HttpContext.Current.Request.ServerVariables[ "HTTP_X_FORWARDED_FOR" ]; if (CustomerIP == null ) CustomerIP = HttpContext.Current.Request.ServerVariables[ "REMOTE_ADDR" ]; } else { CustomerIP = HttpContext.Current.Request.ServerVariables[ "REMOTE_ADDR" ]; } if ( string .Compare(CustomerIP, "unknown" , true ) == 0) return HttpContext.Current.Request.UserHostAddress; return CustomerIP; } catch { } return userIP; } /**/ /// <summary> /// 判断是否是IP地址格式 0.0.0.0 /// </summary> /// <param name="str1">待判断的IP地址</param> /// <returns>true or false</returns> public static bool IsIPAddress( string str1) { if (str1 == null || str1 == string .Empty || str1.Length < 7 || str1.Length > 15) return false ; string regformat = @"^/d{1,3}[/.]/d{1,3}[/.]/d{1,3}[/.]/d{1,3}$" ; Regex regex = new Regex(regformat, RegexOptions.IgnoreCase); return regex.IsMatch(str1); } /// <summary> /// 时间转换时间戳 /// </summary> /// <param name="time"></param> /// <returns></returns> public static string ConvertDateTimeInt( string time) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime( new DateTime(1970, 1, 1)); DateTime dtNow = DateTime.Parse(time); TimeSpan toNow = dtNow.Subtract(dtStart); string timeStamp = toNow.Ticks.ToString(); timeStamp = timeStamp.Substring(0, timeStamp.Length - 7); return timeStamp; } /// <summary> /// 时间戳转换时间 /// </summary> /// <param name="datestr"></param> /// <returns></returns> public static DateTime ConvertDate( string datestr) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime( new DateTime(1970, 1, 1)); long lTime = long .Parse(datestr + "0000000" ); TimeSpan toNow = new TimeSpan(lTime); DateTime dtResult = dtStart.Add(toNow); return dtResult; } /// <summary> /// 转换时间 /// </summary> /// <param name="time"></param> /// <returns></returns> public static string ConvertDateTimeInt_flot( string time) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime( new DateTime(1970, 1, 1)); DateTime dtNow = DateTime.Parse(time); TimeSpan toNow = dtNow.Subtract(dtStart); string timeStamp = toNow.Ticks.ToString(); timeStamp = timeStamp.Substring(0, timeStamp.Length - 4); return timeStamp; } /// <summary> /// 上传 /// </summary> /// <param name="_rootPath"></param> /// <param name="_file"></param> /// <param name="_filename"></param> /// <param name="type_s"></param> /// <returns></returns> public static string FileUploader( string _rootPath, HttpPostedFileBase _file, string _filename = null , string type_s = "" ) { string sFileName = _filename; if (_file != null ) { string _filePath = _file.FileName; if (_filePath != string .Empty) { string _fileType = _filePath.Substring(_filePath.LastIndexOf( "." )); string sFileRoot = _rootPath; if (!System.IO.Directory.Exists(sFileRoot)) System.IO.Directory.CreateDirectory(sFileRoot); if (sFileName == null ) { if (type_s != "" ) { sFileName = DateTime.Now.ToString( "yyyyMMddHHmmssms" ) + type_s; } else { sFileName = DateTime.Now.ToString( "yyyyMMddHHmmssms" ) + _fileType; } } else { if (type_s != "" ) { sFileName = sFileName + type_s; } else { sFileName = sFileName + _fileType; } } string sFilePath = sFileRoot + "\\" + sFileName; _file.SaveAs(sFilePath); } } return sFileName; } /// <summary> /// 根据路径把文件转换成数据流 /// </summary> /// <param name="strpath"></param> /// <returns></returns> public static byte [] Returnbyte( string strpath) { // 以二进制方式读文件 FileStream fsMyfile = new FileStream(strpath, FileMode.OpenOrCreate, FileAccess.ReadWrite); // 创建一个二进制数据流读入器，和打开的文件关联 BinaryReader brMyfile = new BinaryReader(fsMyfile); // 把文件指针重新定位到文件的开始 brMyfile.BaseStream.Seek(0, SeekOrigin.Begin); byte [] bytes = brMyfile.ReadBytes(Convert.ToInt32(fsMyfile.Length.ToString())); // 关闭以上new的各个对象 brMyfile.Close(); return bytes; } public static void DeleteFile( string filepatch) { FileInfo file = new FileInfo(filepatch); //指定文件路径 if (file.Exists) //判断文件是否存在 { file.Attributes = FileAttributes.Normal; //将文件属性设置为普通,比方说只读文件设置为普通 file.Delete(); //删除文件 } } /// 取得某月的第一天 /// </summary> /// <param name="datetime">要取得月份第一天的时间</param> /// <returns></returns> private DateTime FirstDayOfMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day); } /// <summary> /// 取得某月的最后一天 /// </summary> /// <param name="datetime">要取得月份最后一天的时间</param> /// <returns></returns> private DateTime LastDayOfMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddMonths(1).AddDays(-1); } /// <summary> /// 取得上个月第一天 /// </summary> /// <param name="datetime">要取得上个月第一天的当前时间</param> /// <returns></returns> public DateTime FirstDayOfPreviousMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddMonths(-1); } /// <summary> /// 取得上个月的最后一天 /// </summary> /// <param name="datetime">要取得上个月最后一天的当前时间</param> /// <returns></returns> public DateTime LastDayOfPrdviousMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddDays(-1); } /// <summary> /// 取得上周的第一天 /// </summary> /// <param name="datetime">要取得上周最后一天的当前时间</param> /// <returns></returns> public static DateTime FirstDayOfPrdviousWeek(DateTime datetime) { //星期一为第一天 int weeknow = Convert.ToInt32(datetime.DayOfWeek); //因为是以星期一为第一天，所以要判断weeknow等于0时，要向前推6天。 weeknow = (weeknow == 0 ? (7 - 1) : (weeknow - 1)); int daydiff = (-1) * weeknow; //本周第一天 string FirstDay = datetime.AddDays(daydiff).ToString( "yyyy-MM-dd" ); return Convert.ToDateTime(FirstDay); } /// <summary> /// 取得上周的最后一天 /// </summary> /// <param name="datetime">要取得上周最后一天的当前时间</param> /// <returns></returns> public static DateTime LastDayOfPrdviousWeek(DateTime datetime) { //星期天为最后一天 int weeknow = Convert.ToInt32(datetime.DayOfWeek); weeknow = (weeknow == 0 ? 7 : weeknow); int daydiff = (7 - weeknow); //本周最后一天 string LastDay = datetime.AddDays(daydiff).ToString( "yyyy-MM-dd" ); return Convert.ToDateTime(LastDay); } /// <summary> /// 判断字符串是否为正整数 /// </summary> /// <param name="str">要判断的字符串对象</param> /// <returns></returns> public static bool IsInt( string str) { bool isInt = false ; if (! string .IsNullOrEmpty(str)) { isInt = Regex.IsMatch(str, @"^(0|([1-9]\d*))$" ); } return isInt; } /// <summary> /// 判断是否为DateTime /// </summary> /// <param name="strDate"></param> /// <returns></returns> public static bool IsDateTime( string strDate) { try { DateTime.Parse(strDate); return true ; } catch { return false ; } } /// <summary> /// 生成单号 /// </summary> /// <param name="channel"></param> /// <returns></returns> public static string GetOrderNo() { if (seed == int .MaxValue) { seed = 1; } seed++; string tbout_trade_no = "" ; string guid = Guid.NewGuid().ToString(); string last = guid.Replace( "-" , "" ); char [] cc = last.ToCharArray(); StringBuilder sb = new StringBuilder(4); Random rd = new Random(( unchecked (( int )DateTime.Now.Ticks + seed))); for ( int i = 0; i < 6; i++) { sb.Append(cc[rd.Next(cc.Length)]); } tbout_trade_no = sb + "-" + DateTime.Now.ToString( "yyyyMMddHHmmssff" ); return tbout_trade_no; } /// <summary> /// 生成密匙 /// </summary> /// <param name="mch_id"></param> /// <returns></returns> public static string GetGGAPIKey( string num_id) { if (key_seed == int .MaxValue) { key_seed = 1; } key_seed++; string key = "" ; char [] constant = { '0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' , 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' , 'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' , 'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' , 'X' , 'Y' , 'Z' }; StringBuilder sb = new StringBuilder(4); for ( int i = 0; i < 5; i++) { Random rd = new Random(( unchecked (( int )DateTime.Now.Ticks + i))); sb.Append(constant[rd.Next(62)]); } key = MD5.Md5UTF8(num_id + sb).ToLower(); return key; } /// <summary> /// PostUTF8格式的JSON /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8Json( string json, string url, int timeout = 1000000) { byte [] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST" ; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = "" ; if (( int )result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时" ) { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = "" ; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostUTF8格式的Form /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8Form( string json, string url, int timeout = 1000000) { byte [] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST" ; item.Allowautoredirect = true ; item.ContentType = "application/x-www-form-urlencoded" ; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = "" ; if (( int )result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时" ) { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = "" ; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostGB2312格式的表单 /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostGB2312Form( string json, string url, int timeout = 5000) { byte [] encodebytes = System.Text.Encoding.GetEncoding( "GB2312" ).GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST" ; item.Allowautoredirect = true ; item.ContentType = "application/x-www-form-urlencoded" ; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.GetEncoding( "GB2312" ); item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = "" ; if (( int )result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时" ) { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = "" ; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostUTF8格式的JSON /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8File( byte [] encodebytes, string url, int timeout = 1000000) { //byte[] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST" ; item.ContentType = "multipart/form-data" ; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = "" ; if (( int )result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时" ) { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = "" ; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// Get格式 /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string GetUrl( string url, int timeout = 1000000) { HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.Timeout = timeout; item.URL = url; HttpResult result = helper.GetHtml(item); string msg = "" ; if (( int )result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时" ) { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = "" ; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// 生成随机字符串 /// </summary> /// <returns></returns> public static string get_noce_str() { if (noseed == int .MaxValue) { noseed = 1; } noseed++; char [] constant = { '0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' , 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' , 'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' , 'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' , 'X' , 'Y' , 'Z' }; StringBuilder sb = new StringBuilder(16); Random rd = new Random(( unchecked (( int )DateTime.Now.Ticks + noseed))); for ( int i = 0; i < 16; i++) { sb.Append(constant[rd.Next(62)]); } return sb.ToString(); } /// <summary> /// 生成6位邀请码 /// </summary> /// <returns></returns> public static string get_generate_str() { if (geseed == int .MaxValue) { geseed = 1; } geseed++; char [] constant = { '0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' , 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' , 'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' , 'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' , 'X' , 'Y' , 'Z' }; StringBuilder sb = new StringBuilder(6); Random rd = new Random(( unchecked (( int )DateTime.Now.Ticks + geseed))); for ( int i = 0; i < 6; i++) { sb.Append(constant[rd.Next(62)]); } return sb.ToString(); } /// <summary> /// 生成6位订单号 /// </summary> /// <returns></returns> public static string Nrandom() { if (domseed == int .MaxValue) { domseed = 1; } domseed++; string rm = "" ; Random rd = new Random(( unchecked (( int )DateTime.Now.Ticks + domseed))); for ( int i = 0; i < 6; i++) { rm += rd.Next(0, 9).ToString(); } return rm; } /// <summary> /// 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringA(SortedDictionary< string , string > dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair< string , string > temp in dicArray) { prestr.Append(temp.Key + "=" + temp.Value + "&" ); } //去掉最後一個&字符 int nLen = prestr.Length; prestr.Remove(nLen - 1, 1); return prestr.ToString(); } /// <summary> /// 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringB(Dictionary< string , string > dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair< string , string > temp in dicArray) { prestr.Append(temp.Key + "=" + temp.Value + "&" ); } //去掉最後一個&字符 int nLen = prestr.Length; prestr.Remove(nLen - 1, 1); return prestr.ToString(); } /// <summary> /// 把数组所有元素，按照“参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringC(Dictionary< string , string > dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair< string , string > temp in dicArray) { prestr.Append(temp.Value); } return prestr.ToString(); } /// <summary> /// 多余字段用指定字符串代替 /// </summary> /// <param name="MaxLength">字符串最大长度</param> /// <param name="ReplaceRemark">超出时代替的符号</param> /// <param name="value">要转换的字符串</param> /// <returns></returns> public static string Overflow( int MaxLength, string ReplaceRemark, string value) { if (value.Length > MaxLength) { return value = value.Remove(MaxLength) + ReplaceRemark; } return value; } /// <summary> /// 每隔n个字符插入n个字符 /// </summary> /// <param name="input">源字符串</param> /// <param name="interval">间隔字符数</param> /// <param name="value">待插入值</param> /// <returns>返回新生成字符串</returns> public static string InsertFormat( string input, int interval, string value) { for ( int i = interval; i < input.Length; i += interval + value.Length) input = input.Insert(i, value); return input; } /// <summary> /// 手机号码隐藏中间4位 /// </summary> /// <param name="phone"></param> /// <returns></returns> public static string HidePhone( string phone) { return Regex.Replace(phone, "(\\d{3})\\d{4}(\\d{4})" , "$1****$2" ); } /// <summary> /// 判断是否带http，flase=有，ture=没有 /// </summary> /// <param name="url"></param> /// <returns></returns> public static bool IsHttp( string url) { string reg = @"^(http(s)?:\/\/)?(www\.)?[\w-]+(\.\w{2,4})?\.\w{2,4}?(\/)?$" ; Regex r = new Regex(reg); //给网址去所有空格 string urlStr = url.Trim(); Match m = r.Match(urlStr); //判断是否带http:// if (!m.Success) return false ; return true ; } #region 得到一周的周一和周日的日期 /// <summary> /// 计算本周的周一日期 /// </summary> /// <returns></returns> public static DateTime GetMondayDate() { return GetMondayDate(DateTime.Now); } /// <summary> /// 计算本周周日的日期 /// </summary> /// <returns></returns> public static DateTime GetSundayDate() { return GetSundayDate(DateTime.Now); } /// <summary> /// 计算某日起始日期（礼拜一的日期） /// </summary> /// <param name="someDate">该周中任意一天</param> /// <returns>返回礼拜一日期，后面的具体时、分、秒和传入值相等</returns> public static DateTime GetMondayDate(DateTime someDate) { int i = someDate.DayOfWeek - DayOfWeek.Monday; if (i == -1) i = 6; // i值 > = 0 ，因为枚举原因，Sunday排在最前，此时Sunday-Monday=-1，必须+7=6。 TimeSpan ts = new TimeSpan(i, 0, 0, 0); return someDate.Subtract(ts); } /// <summary> /// 计算某日结束日期（礼拜日的日期） /// </summary> /// <param name="someDate">该周中任意一天</param> /// <returns>返回礼拜日日期，后面的具体时、分、秒和传入值相等</returns> public static DateTime GetSundayDate(DateTime someDate) { int i = someDate.DayOfWeek - DayOfWeek.Sunday; if (i != 0) i = 7 - i; // 因为枚举原因，Sunday排在最前，相减间隔要被7减。 TimeSpan ts = new TimeSpan(i, 0, 0, 0); return someDate.Add(ts); } #endregion } public class ValidateCode { public ValidateCode() { } /// <summary> /// 验证码的最大长度 /// </summary> public int MaxLength { get { return 10; } } /// <summary> /// 验证码的最小长度 /// </summary> public int MinLength { get { return 1; } } /// <summary> /// 生成验证码 /// </summary> /// <param name="length">指定验证码的长度</param> /// <returns></returns> public string CreateValidateCode( int length) { int [] randMembers = new int [length]; int [] validateNums = new int [length]; string validateNumberStr = "" ; //生成起始序列值 int seekSeek = unchecked (( int )DateTime.Now.Ticks); Random seekRand = new Random(seekSeek); int beginSeek = ( int )seekRand.Next(0, Int32.MaxValue - length * 10000); int [] seeks = new int [length]; for ( int i = 0; i < length; i++) { beginSeek += 10000; seeks[i] = beginSeek; } //生成随机数字 for ( int i = 0; i < length; i++) { Random rand = new Random(seeks[i]); int pownum = 1 * ( int )Math.Pow(10, length); randMembers[i] = rand.Next(pownum, Int32.MaxValue); } //抽取随机数字 for ( int i = 0; i < length; i++) { string numStr = randMembers[i].ToString(); int numLength = numStr.Length; Random rand = new Random(); int numPosition = rand.Next(0, numLength - 1); validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1)); } //生成验证码 for ( int i = 0; i < length; i++) { validateNumberStr += validateNums[i].ToString(); } return validateNumberStr; } /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="context">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public void CreateValidateGraphic( string validateCode, HttpContext context) { Bitmap image = new Bitmap(( int )Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for ( int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine( new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font( "Arial" , 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush( new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true ); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for ( int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle( new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 context.Response.Clear(); context.Response.ContentType = "image/jpeg" ; context.Response.BinaryWrite(stream.ToArray()); } finally { g.Dispose(); image.Dispose(); } } /// <summary> /// 得到验证码图片的长度 /// </summary> /// <param name="validateNumLength">验证码的长度</param> /// <returns></returns> public static int GetImageWidth( int validateNumLength) { return ( int )(validateNumLength * 12.0); } /// <summary> /// 得到验证码的高度 /// </summary> /// <returns></returns> public static double GetImageHeight() { return 22.5; } //C# MVC 升级版 /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="containsPage">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public byte [] CreateValidateGraphic( string validateCode) { Bitmap image = new Bitmap(( int )Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for ( int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine( new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font( "Arial" , 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush( new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true ); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for ( int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle( new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 return stream.ToArray(); } finally { g.Dispose(); image.Dispose(); } } } } |