C#实现类似新浪微博长URL转短地址的方法
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2022-04-29 20:52:24
本文实例讲述了c#实现类似新浪微博长url转短地址的方法。分享给大家供大家参考。具体如下:
一、前台判断用户输入url的js代码如下。
function che...
本文实例讲述了c#实现类似新浪微博长url转短地址的方法。分享给大家供大家参考。具体如下:
一、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 () { $("#div_txtlength").html("正在提交。。。"); }, success: function (data) { if (data.length > 1) { window.location.reload(); } else { art.dialog({ title: '错误', icon: 'error', content: '发布失败,请复制内容后刷新当前页面。', width: "150px", height: "80px", lock: true }); } }, complete: function (xmlhttprequest, textstatus) { // alert(xmlhttprequest.responsetext); // alert(textstatus); }, error: function () { } }); }
二、前台aspx的代码如下(部分)
<div class="title_left"> 有什么新鲜事和大家分享?</div> <div class="left_box"> <textarea class="textarea01" id="inp_text" onblur="checkinput()" onkeyup="checkinput()"> </textarea></div> <div class="left_box"> <div class="insert" style="visibility: hidden"> <ul> <li style="background: url(../images/weibo/icon.jpg) no-repeat -172px 0px;"> <a href="#"> 表情</a></li> <li style="background: url(../images/weibo/icon.jpg) no-repeat -115px 0px;"> <a href="#"> 图片</a></li> <li style="background: url(../images/weibo/icon.jpg) no-repeat -229px 0px;"> <a href="#"> 音乐</a></li> </ul> </div> <div class="prompt" id="div_txtlength"> 还能输入<span>140</span>字</div> <div class="bottom_gb"> <a href="javascript:void(0)" onclick="inserttext();" class="link1"></a> </div> </div>
三、以上是用来判断用户输入内容里面是否含有网址,下面是后台提交到数据库的时候进行的转换
#region 长url转短url regex rx = new regex("((news|telnet|nttp|file|http|ftp|https)://){1}(([-a-za-z0-9]+(\\.[-a-za-z0-9]+)*(\\.[-a-za-z]{2,5}))|([0-9]{1,3}(\\.[0-9]{1,3}){3}))(:[0-9]*)?(/[-a-za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*)*", 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
四、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
五、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 );
至此,基于上面的代码即可完成微博的长短url相互转换,具体应用的时候还需要自己进行调整修改。
希望本文所述对大家的c#程序设计有所帮助。
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