模仿新浪微博长URL转短地址代码,CSharp代码库,德仔网

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【CSharp】模仿新浪微博长URL转短地址
作者:亭 / 发布于2014/11/11/ 638

	前台判断用户输入URL的JS代码如下

	function CheckInput() {
	 var $txtLength = $("#inp_text").val().length;
	 if ($txtLength > 10) {
	 var url = $("#inp_text").val();
	 var xx = url.match(RegExp("((news|telnet|nttp|file|http|ftp|https)://){1}(([-A-Za-z0-9]+(\\.[-A-Za-z0-9]+)*(\\.[-A-Za-z]{2,5}))|([0-9]{1,3}(\\.[0-9]{1,3}){3}))(:[0-9]*)?(/[-A-Za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*)*", "gi") || []);
	 if (xx != null) {
	 for (var i = 0; i < xx.length; i++) {
	 var $txtLength = $("#inp_text").val().length;
	 $txtLength = $txtLength - xx[i].length + 11;
	 }
	 }
	 }
	 if ($txtLength < 141) {
	 $("#div_txtlength").html("还能输入<span>" + (140 - $txtLength) + "</span>个字");
	 }
	 else {
	 $("#div_txtlength").html("超出<span>" + ($txtLength - 140) + "</span>个字");
	 }

	}

	function InsertText() {
	 if ($("#inp_text").val().Trim().length == 0) {
	 art.dialog({
	 title: '错误',
	 icon: 'error',
	 content: '请输入内容',
	 width: "150px",
	 height: "80px",
	 lock: true
	 });
	 return;
	 }
	 //长url转换成短url
	 var url = $("#inp_text").val();
	 var xx = url.match(RegExp("((news|telnet|nttp|file|http|ftp|https)://){1}(([-A-Za-z0-9]+(\\.[-A-Za-z0-9]+)*(\\.[-A-Za-z]{2,5}))|([0-9]{1,3}(\\.[0-9]{1,3}){3}))(:[0-9]*)?(/[-A-Za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*)*", "gi") || []);
	 var $txtLength = $("#inp_text").val().length;
	 if (xx != null) {
	 for (var i = 0; i < xx.length; i++) {
	 $txtLength = $txtLength - xx[i].length + 11;
	 }
	 }
	 if ($txtLength < 141) {
	 $("#div_txtlength").html("还能输入<span>" + (140 - $txtLength) + "</span>个字");
	 }
	 else {
	 $("#div_txtlength").html("超出<span>" + ($txtLength - 140) + "</span>个字");
	 }
	 if ($txtLength > 140) {
	 art.dialog({
	 title: '错误',
	 icon: 'error',
	 content: '字数超出限制',
	 width: "150px",
	 height: "80px",
	 lock: true
	 });
	 return false;
	 }
	 $.ajax({
	 type: "POST",
	 url: "../MiniBlog/Handler.ashx",
	 data: { "txt": $("#inp_text").val() },
	 datatype: "html",
	 beforeSend: function () { $("#div_txtlength").html("正在提交。。。"); },
	 success: function (data) {
	 if (data.length > 1) {
	 window.location.reload();
	 }
	 else {
	 art.dialog({
	 title: '错误',
	 icon: 'error',
	 content: '发布失败，请复制内容后刷新当前页面。',
	 width: "150px",
	 height: "80px",
	 lock: true
	 });
	 }
	 },
	 complete: function (XMLHttpRequest, textStatus) {
	 // alert(XMLHttpRequest.responseText);
	 // alert(textStatus);
	 },
	 error: function () {
	 }
	 });
	}

	

	前台ASPX的代码如下（部分）

	<div class="title_left">
	 有什么新鲜事和大家分享？</div>
	 <div class="left_box">
	 <textarea class="textarea01" id="inp_text" onblur="CheckInput()" onkeyup="CheckInput()"></textarea></div>
	 <div class="left_box">
	 <div class="insert" style="visibility: hidden">
	 <ul>
	 <li style="background: url(../images/weibo/icon.jpg) no-repeat -172px 0px;"><a href="#">
	 表情</a></li>
	 <li style="background: url(../images/weibo/icon.jpg) no-repeat -115px 0px;"><a href="#">
	 图片</a></li>
	 <li style="background: url(../images/weibo/icon.jpg) no-repeat -229px 0px;"><a href="#">
	 音乐</a></li>
	 </ul>
	 </div>
	 <div class="Prompt" id="div_txtlength">
	 还能输入<span>140</span>字</div>
	 <div class="bottom_gb">
	 <a href="javascript:void(0)" onclick="InsertText();" class="link1"></a>
	 </div>
	 </div>

	

	三、以上是用来判断用户输入内容里面是否含有网址，下面是后台提交到数据库的时候进行的转换

	

	#region 长url转短url
	 Regex rx = new Regex("((news|telnet|nttp|file|http|ftp|https)://){1}(([-A-Za-z0-9]+(\\.[-A-Za-z0-9]+)*(\\.[-A-Za-z]{2,5}))|([0-9]{1,3}(\\.[0-9]{1,3}){3}))(:[0-9]*)?(/[-A-Za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*)*", RegexOptions.IgnoreCase);
	 string txt_context = context.Request.Form["txt"].ToString();
	 MatchCollection mc = rx.Matches(txt_context);
	 if (mc.Count > 0)
	 {
	 for (int i = 0; i < mc.Count; i++)
	 {
	 Haedu.Gxt.Model.MINIBLOGURL_Model M_url = new Haedu.Gxt.Model.MINIBLOGURL_Model();
	 Haedu.Gxt.Bll.MINIBLOGURL B_url = new Haedu.Gxt.Bll.MINIBLOGURL();

	 M_url.BACKUP1 = Common.md5(mc[i].Value);
	 M_url.BACKUP2 = " ";
	 M_url.CREATETIME = DateTime.Now;
	 M_url.CREATEUSER = User_BaseInfo.GetUserID;
	 M_url.ID = Common.GetGUID;
	 M_url.STATE = 0;
	 M_url.SURL = mc[0].Value;
	 M_url.TURL = MiniBlog.ShortUrl(mc[i].Value);
	 txt_context = txt_context.Replace(mc[i].Value, M_url.TURL);

	 if(!B_url.Exists(M_url.BACKUP1))
	 {
	 B_url.Add(M_url);
	 }
	 }
	 }

	 #endregion
	 #region 写入微博数据库
	 --写入微博数据库的代码
	 #endregion

	

	

	MiniBlog.ShortUrl方法代码

	#region 长转短url
	 /// <summary>
	 /// 长url转短url
	 /// </summary>
	 /// <param name="url">原url</param>
	 /// <returns>返回短url</returns>
	 public static string ShortUrl(string url)
	 {
	 //可以自定义生成MD5加密字符传前的混合KEY
	 string key = "Haedu_MiniBlog";
	 //要使用生成URL的字符
	 string[] chars = new string[]{
	 "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","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"};
	 //对传入网址进行MD5加密
	 string hex = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(key + url, "md5");
	 string[] resUrl = new string[4];
	 for (int i = 0; i < 4; i++)
	 {
	 //把加密字符按照8位一组16进制与0x3FFFFFFF进行位与运算
	 int hexint = 0x3FFFFFFF & Convert.ToInt32("0x" + hex.Substring(i * 8, 8), 16);
	 string outChars = string.Empty;
	 for (int j = 0; j < 6; j++)
	 {
	 //把得到的值与0x0000003D进行位与运算，取得字符数组chars索引
	 int index = 0x0000003D & hexint;
	 //把取得的字符相加
	 outChars += chars[index];
	 //每次循环按位右移5位
	 hexint = hexint >> 5;
	 }
	 //把字符串存入对应索引的输出数组
	 resUrl[i] = outChars;
	 }
	 return "http://url.cn/" + resUrl[(new Random()).Next(0, 3)];
	 }
	 #endregion

	

	短URL转换成原始URL

	#region 短url替换成原始url
	 public static string CheckUrl(string context)
	 {
	 Regex rx = new Regex("((news|telnet|nttp|file|http|ftp|https)://){1}(([-A-Za-z0-9]+(\\.[-A-Za-z0-9]+)*(\\.[-A-Za-z]{2,5}))|([0-9]{1,3}(\\.[0-9]{1,3}){3}))(:[0-9]*)?(/[-A-Za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*)*", RegexOptions.IgnoreCase);
	 MatchCollection mc = rx.Matches(context);
	 if (mc.Count > 0)
	 {
	 for (int i = 0; i < mc.Count; i++)
	 {
	 Haedu.Gxt.Model.MINIBLOGURL_Model M_url = new Haedu.Gxt.Model.MINIBLOGURL_Model();
	 Haedu.Gxt.Bll.MINIBLOGURL B_url = new Haedu.Gxt.Bll.MINIBLOGURL();
	 M_url = B_url.GetModel(mc[i].Value);
	 if (M_url != null)
	 {
	 if (int.Parse(M_url.STATE.ToString()) == 2)
	 {
	 context = context.Replace(mc[i].Value, "链接已经被屏蔽");
	 }
	 else
	 {
	 context = context.Replace(mc[i].Value, "<a href=\"" + M_url.SURL + "\" target=\"_blank\" title=\"" + M_url.SURL + "\" >" + mc[i].Value + "</a>");
	 }
	 }
	 }
	 }
	 return context;
	 }
	 #endregion

	

	

	六、数据库结构（oracle）

	-- Create table
	create table MINIBLOGURL
	(
	 id VARCHAR2(50) not null,
	 surl VARCHAR2(200) not null,
	 turl VARCHAR2(100) not null,
	 createtime DATE not null,
	 createuser VARCHAR2(50) not null,
	 state NUMBER(1) not null,
	 backup1 VARCHAR2(200) not null,
	 backup2 VARCHAR2(200) not null
	)
	tablespace TAB_GXT
	 pctfree 10
	 initrans 1
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 8K
	 minextents 1
	 maxextents unlimited
	 );
	-- Add comments to the columns
	comment on column MINIBLOGURL.id
	 is '逻辑ID';
	comment on column MINIBLOGURL.surl
	 is '原始url';
	comment on column MINIBLOGURL.turl
	 is '转成的短url';
	comment on column MINIBLOGURL.createtime
	 is '创建时间';
	comment on column MINIBLOGURL.createuser
	 is '创建人ID';
	comment on column MINIBLOGURL.state
	 is '状态，0为认证的网址（比较知名的网站域名），1为未认证的网址（小网站），2为锁定不允许点击（广告类的网址）';
	comment on column MINIBLOGURL.backup1
	 is 'MD5值，用来比较网址是否已经存在';
	comment on column MINIBLOGURL.backup2
	 is '备用字段2';
	-- Create/Recreate primary, unique and foreign key constraints
	alter table MINIBLOGURL
	 add constraint PK_ID primary key (ID)
	 using index
	 tablespace TAB_GXT
	 pctfree 10
	 initrans 2
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 1M
	 minextents 1
	 maxextents unlimited
	 );
	-- Create/Recreate indexes
	create index IX_CREATEUSER on MINIBLOGURL (CREATEUSER)
	 tablespace TAB_GXT
	 pctfree 10
	 initrans 2
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 1M
	 minextents 1
	 maxextents unlimited
	 );
	create unique index IX_MD5 on MINIBLOGURL (BACKUP1)
	 tablespace TAB_GXT
	 pctfree 10
	 initrans 2
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 1M
	 minextents 1
	 maxextents unlimited
	 );
	create index IX_SURL on MINIBLOGURL (SURL)
	 tablespace TAB_GXT
	 pctfree 10
	 initrans 2
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 1M
	 minextents 1
	 maxextents unlimited
	 );
	create index IX_TURL on MINIBLOGURL (TURL)
	 tablespace TAB_GXT
	 pctfree 10
	 initrans 2
	 maxtrans 255
	 storage
	 (
	 initial 64K
	 next 1M
	 minextents 1
	 maxextents unlimited
	 );
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