C# 正则表达式匹配集合多个匹配
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Regex Match Collection multiple matches
提问by Trey Balut
I'm trying to retrieve all text between <td>and</td>, but I only get the first match in my collection. Do I need a *or something? Here is my code.
我正在尝试检索<td>和之间的所有文本</td>，但我只获得了收藏中的第一个匹配项。我需要*什么吗？这是我的代码。
string input = @"<tr class=""row0""><td>09/08/2013</td><td><a href=""/teams/nfl/new-england-patriots/results"">New England Patriots</a></td><td><a href=""/boxscore/2013090803"">L, 23-21</a></td><td align=""center"">0-1-0</td><td align=""right"">65,519</td></tr>";
string pattern = @"(?<=<td>)[^>]*(?=</td>)";
MatchCollection matches = Regex.Matches(input, pattern);
foreach (Match match in matches)
{
try
{
listBoxControl1.Items.Add(matches.ToString());
}
catch { }
}
采纳答案by Gary C.
Use the following regex expression:
使用以下正则表达式：
string input = "<tr class=\"row0\"><td>09/08/2013</td><td><a href=\"/teams/nfl/new-england-patriots/results\">New England Patriots</a></td><td><a href=\"/boxscore/2013090803\">L, 23-21</a></td><td align=\"center\">0-1-0</td><td align=\"right\">65,519</td></tr>";
string pattern = "(<td>)(?<td_inner>.*?)(</td>)";
MatchCollection matches = Regex.Matches(input, pattern);
foreach (Match match in matches) {
try {
Console.WriteLine(match.Groups["td_inner"].Value);
}
catch { }
}
回答by Anirudha
HTML(except XHTML) is not strict i.e in some cases
HTML（XHTML 除外）并不严格，即在某些情况下
- you could have tags which have no ending tags.
- you could have nested tags..
- 你可以有没有结束标签的标签。
- 你可以嵌套标签..
regex is not suitable for parsing such complex grammar.You need to use a parser..
正则表达式不适合解析这么复杂的语法。需要使用解析器。
Use htmlagilitypackparser
使用htmlagilitypack解析器
You can use this code to retrieve it using HtmlAgilityPack
您可以使用此代码来检索它 HtmlAgilityPack
HtmlDocument doc = new HtmlDocument();
doc.Load(yourStream);
var tdList = doc.DocumentNode.SelectNodes("//td")
.Select(p => p.InnerText)
.ToList();
回答by Philipp P
I found a solution here http://geekcoder.org/js-extract-hashtags-from-text/from Nicolas Durand - it seems to work pretty well:
我在这里找到了一个解决方案http://geekcoder.org/js-extract-hashtags-from-text/from Nicolas Durand - 它似乎工作得很好：
#[^ :\n\t\.,\?\/''!]+
Best regards, Phil
最好的问候，菲尔
