正则表达式罗选数据（C#)

正则表达式筛选数据（C#)

大家看一下我这段HTML源码，我要从中筛选出：杜汶还有https://www.facebook.com/karma.dawa.7?fref=st，等这一模块所有值还包括：肖丽和https://www.facebook.com/li.sally.96?fref=st等，请问正则表达式怎么写呀？？？行业数据正则表达式 C#
[解决办法]

string tempStr = File.ReadAllText(@"C:\Users\myx\Desktop\Test.txt", Encoding.GetEncoding("GB2312"));//读取txt
            string pattern = @"&lt;span[^&gt;]*?class=(['""]?)fsl fwb fcb\1[^&gt;]*?&gt;\s*?&lt;a[^&gt;]*?href=(['""]?)([^'""]*?)\2[^&gt;]*?&gt;([^&lt;&gt;]*?)(?=&lt;)";

            var list = Regex.Matches(tempStr, pattern).OfType&lt;Match&gt;().Select(a =&gt; new 
            { 
                href=a.Groups[3].Value,
                text=a.Groups[4].Value
            });
            /*
             * +[0]{ href = "https://www.facebook.com/karma.dawa.7?fref=st", text = "杜汶 " }&lt;Anonymous Type&gt;
                +[1]{ href = "https://www.facebook.com/holaam?fref=st", text = "Jackie Fung" }&lt;Anonymous Type&gt;
                +[2]{ href = "https://www.facebook.com/li.sally.96?fref=st", text = "肖丽" }&lt;Anonymous Type&gt;

             */

[解决办法]
可能你的.netFrame版本太低了吧

string tempStr = File.ReadAllText(@"C:\Users\myx\Desktop\Test.txt", Encoding.GetEncoding("GB2312"));//读取txt 
 
            string pattern = @"&lt;span[^&gt;]*?class=(['""]?)fsl fwb fcb\1[^&gt;]*?&gt;\s*?&lt;a[^&gt;]*?href=(['""]?)([^'""]*?)\2[^&gt;]*?&gt;([^&lt;&gt;]*?)(?=&lt;)";
            foreach (Match m in Regex.Matches(tempStr, pattern))
            {
                string href = m.Groups[3].Value;
                string text = m.Groups[4].Value;
            }

[解决办法]
(?i)<a\s*href="([^"]*)"\s*data-hovercard="\/ajax\/hovercard\/user\.php\?id=\d+">([^<]*)<

正则表达式罗选数据（C#)

[解决办法]
因为你用了@,就不需要转义符
[解决办法]
试试这个
new Regex(@"(?i)<a\s*href=""([^""]*)""\s*data-hovercard=""\/ajax\/hovercard\/user\.php\?id=\d+"">([^<]*)<", RegexOptions.ExplicitCapture)
[解决办法]
正则表达式罗选数据（C#)


 private void btn_get_Click(object sender, EventArgs e)
        {
            Regex threg = new Regex(@"(?i)&lt;a\s*href=""([^""]*)""\s*data-hovercard=""\/ajax\/hovercard\/user\.php\?id=\d+""&gt;([^&lt;]*)&lt;", RegexOptions.ExplicitCapture);
            MatchCollection theMatches = threg.Matches(textBox1.Text);
            string result = "";
            foreach (Match thematch in theMatches)
            {
                if (thematch.Length!=0)
                {
                    result += thematch.Value.ToString();
                    //.Groups["title"].ToString(); 
 
                }

            }
            textBox2.Text = result;

        }

[解决办法]


 private void btn_get_Click(object sender, EventArgs e)
        {
            Regex threg = new Regex(@"(?i)&lt;a\s*href=""(?&lt;url&gt;[^""]*)""\s*data-hovercard=""\/ajax\/hovercard\/user\.php\?id=\d+""&gt;(?&lt;name&gt;[^&lt;]*)&lt;", RegexOptions.ExplicitCapture);
            MatchCollection theMatches = threg.Matches(textBox1.Text);
            string result = "";
            foreach (Match thematch in theMatches)
            {
                if (thematch.Length!=0)
                {
                    
                    result += thematch.Groups["url"].Value;
                    result += thematch.Groups["name"].Value;
                   
                }

            }
            textBox2.Text = result;

        }

正则表达式罗选数据（C#)

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