1 /// <summary>
2 /// 替换body中的img src属性 附加上域名
3 /// </summary>
4 /// <param name="str"></param>
5 /// <returns></returns>
6 protected virtual string ReplaceImg(string str)
7 {
8 // 定义正则表达式用来匹配 img 标签
9 Regex regImg = new Regex(@"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<imgUrl>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase);
10
11 // 搜索匹配的字符串
12 MatchCollection matches = regImg.Matches(str);
13 int i = 0;
14 string[] sUrlList = new string[matches.Count];
15
16 // 取得匹配项列表
17 foreach (Match match in matches)
18 sUrlList[i++] = match.Groups["imgUrl"].Value;
19 //return sUrlList;
20 foreach (var item in sUrlList)
21 {
22 string newStr = _storeContext.CurrentStore.Url + item.Substring(item.IndexOf('/')+1);
23 str = str.Replace(item, newStr);
24 }
25 return str;
26 }
