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最新推荐文章于 2022-06-12 11:37:07 发布

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最新推荐文章于 2022-06-12 11:37:07 发布

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分类专栏：正则文章标签： regex string null object url byte

本文链接：https://blog.youkuaiyun.com/guoyz_1/article/details/5189548

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    protected void Page_Load(object sender, EventArgs e)
    {
        string inputString = getHtml("http://www.sina.com.cn/");
        StringBuilder sb = new StringBuilder();
        Regex reg = null;
        Match mch = null;

        reg = new Regex(@"<a[^<>]*?hrefs*=s*['""s]([^""']*)['""][^<>]*?>(.*?)</a>", RegexOptions.IgnoreCase | RegexOptions.Compiled);
        for (mch = reg.Match(inputString); mch.Success; mch = mch.NextMatch())
        {
            sb.AppendLine("网站：" + mch.Groups[2] + "      ");
            sb.AppendLine("地址：" + mch.Groups[1] + "</br>");

        }
        Response.Write(sb.ToString());
    }

    private string getHtml(string url)
    {
        WebClient myWebClient = new WebClient();
        byte[] myDataBuffer = myWebClient.DownloadData(url);
        return Encoding.Default.GetString(myDataBuffer);
    }