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  • C# 将html文本转化为 文本内容方法TextNoHTML

    不记得在哪看过这个,挺实用的

    /// <summary>
    /// 将html文本转化为 文本内容方法TextNoHTML
    /// </summary>
    /// <param name="Htmlstring">HTML文本值</param>
    /// <returns></returns>
    public string TextNoHTML(string Htmlstring)
    {
        //删除脚本   
        Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
        //删除HTML   
        Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"([/r/n])[/s]+", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "/", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", "   ", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "/xa1", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "/xa2", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "/xa3", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "/xa9", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&#(/d+);", "", RegexOptions.IgnoreCase);
        //替换掉 < 和 > 标记
        Htmlstring = Htmlstring.Replace("<", "");
        Htmlstring = Htmlstring.Replace(">", "");
        Htmlstring = Htmlstring.Replace("
    ", "");
        Htmlstring = Htmlstring.Replace("
    ", "");
        Htmlstring = Htmlstring.Replace("
    ", "");
        //返回去掉html标记的字符串
        return Htmlstring;
    }
    /// <summary>  
    /// 获取Img的路径  
    /// </summary>  
    /// <param name="htmlText">Html字符串文本</param>  
    /// <returns>以数组形式返回图片路径</returns>  
    public static string[] GetHtmlImageUrlList(string htmlText)
    {
        Regex regImg = new Regex(@"<img[^<>]*?src[s	
    ]*=[s	
    ]*[""']?[s	
    ]*(?<imgUrl>[^s	
    ""'<>]*)[^<>]*?/?[s	
    ]*>", RegexOptions.IgnoreCase);
        //新建一个matches的MatchCollection对象 保存 匹配对象个数(img标签)  
        MatchCollection matches = regImg.Matches(htmlText);
        int i = 0;
        string[] sUrlList = new string[matches.Count];
        //遍历所有的img标签对象  
        foreach (Match match in matches)
        {
            //获取所有Img的路径src,并保存到数组中  
            sUrlList[i++] = match.Groups["imgUrl"].Value;
        }
        return sUrlList;
    }
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  • 原文地址:https://www.cnblogs.com/zhyue93/p/Csharp_html_img.html
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