Question

我尝试使用正则表达式获取图片网址，我的代码在下面。

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但是，有时src包含这样的端口号。

SELECT a.* 
FROM tbl_makanan a
LEFT JOIN (
    SELECT id
    FROM tbl_makanan
    ORDER BY id ASC 
    LIMIT 1
) b USING (id)
WHERE b.id IS NULL

我想得到这样的网址（不包括端口号）

string IMG_REX_PATTERN = @"<[Ii][Mm][Gg][^>]*src\s*=\s*[\""\']?(?<IMAGE_URL>[^""'>\s]*)[\""\']?[^>]*>"; 
Match match = Regex.Match(result[i]["N_Dext5EditorField"].ToString(), IMG_REX_PATTERN, RegexOptions.IgnoreCase); 
string src = string.Empty; 
  if (match.Length > 0) 
 { 
     //portalUrl = https://test.beta.co.kr
     string portalUrl = DevelopmentHelper.GetPortalUrl(); 
     src = match.Groups[1].Value.Replace(portalUrl, ""); 
} 
else 
{ 
    src = ""; 
}

我认为简单的方法是portalUrl +＆＃34;：443＆＃34;，但端口号有时不同。

如何修复我的代码？请帮帮我。

Answer 1

  Just update it  

  string src = ":443/dext5editordata/2017/12/20171228_191217524_37634.png";
  int firstindex=src.IndexOf("/");
  string witoutportno=src.Substring(firstindex);

您也可以在此处查看我的代码

http://rextester.com/CRS51521

Answer 2

根据您的回复，我更改了我的代码。

if (match.Length > 0) 
{ 
     //portalUrl = https://test.beta.co.kr
     string portalUrl = DevelopmentHelper.GetPortalUrl(); 
     string tempsrc = match.Groups[1].Value; 

     var uri = new UriBuilder(tempsrc);
     string targetUrl = uri.Uri.ToString();
     src = targetUrl .Replace(portalUrl, "");
} 
else 
{ 
    src = ""; 
}

删除图片网址中的端口号？

2 个答案: