正则问题，为何只能匹配到一条数据

Question

本帖最后由 5653325 于 2013-12-20 17:33:16 编辑

Answer 1

我就想把各个img分组提取出来 title src 和longdesc
这个正则写的有问题，总是只能匹配出来一条。

Answer 2

这样？<img[^>]*title=\\"(?<title>[^"]*)\\"[^>]*src=\\"(?<src>[^"]*)\\"

Answer 3

string pattern = "<img.*?title=\"(?<Title>.+?)\".*?src=\"(?<SRC>.+?)\".*?longdesc=\"(?<DESC>.+?)\" />";
应该是 .*?  

Answer 4

貌似还是匹配一条（但是是错的，开头是开头，尾部是最后一个img的尾部了。）。

Answer 5

貌似还是匹配一条（但是是错的，开头是开头，尾部是最后一个img的尾部了。）。string sss = "<img width=\"499\" height=\"323\" title=\"asdfsadfasdf\" alt=\"\" src=\"http://images.xxxxxx.cn/2013/0522/20130522113854351.jpg\" border=\"0\" longdesc=\"asdfasdfsadfasdf\" /><img width=\"499\" height=\"323\" title=\"asdfsadfasdf\" alt=\"\" src=\"http://images.xxxxxx.cn/2013/0522/20130522113854351.jpg\" border=\"0\" longdesc=\"asdfasdfsadfasdf\" /><img width=\"499\" height=\"323\" title=\"asdfsadfasdf\" alt=\"\" src=\"http://images.xxxxxx.cn/2013/0522/20130522113854351.jpg\" border=\"0\" longdesc=\"asdfasdfsadfasdf\" /><img width=\"499\" height=\"323\" title=\"asdfsadfasdf\" alt=\"\" src=\"http://images.xxxxxx.cn/2013/0522/20130522113854351.jpg\" border=\"0\" longdesc=\"asdfasdfsadfasdf\" /><img width=\"499\" height=\"323\" title=\"asdfsadfasdf\" alt=\"\" src=\"http://images.xxxxxx.cn/2013/0522/20130522113854351.jpg\" border=\"0\" longdesc=\"asdfasdfsadfasdf\" />";            string pattern = @"<img[^>]*title=\""(?<title>[^""]*)\""[^>]*src=\""(?<src>[^""]*)\""[^>]*longdesc=\""(?<longdesc>[^""]*)";
            string title = string.Empty;
            string src = string.Empty;
            string longdesc = string.Empty;
            StringBuilder js = new StringBuilder();            Regex rr = new Regex(pattern, RegexOptions.IgnoreCase);
            MatchCollection matches = rr.Matches(sss);
            int i = 1;
            foreach (Match match in matches)
            {
                title = match.Groups["Title"].Value;
                src = match.Groups["SRC"].Value;
                longdesc = match.Groups["DESC"].Value;                js.Append("<li>");
                js.Append("<a href=\"javascript:void(0);\">");
                js.Append("<img src=\"\" width=\"120\" height=\"80\" alt=\"" + title + "\" />");
                js.Append("</a>");
                js.Append("</li>");
                i++;
            } 我这里是可以的