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我需要從一組文本信息中提取http鏈接。特定短語，並且具有圖像extenstions（爲.jpg，.png）根據關鍵字將一組字符串複製到局部變量
例如，我想獨自 「http://www.mywedding.com/blog/wp-content/gallery/p_867/bridal-party-white-flowers-40306.jpg」
從下面的一組東西
<p><a href="http://www.mywedding.com/blog/wp-content/gallery/p_867/bridal-party-white-flowers-40306.jpg" target="_blank"><a href="http://www.mywedding.com/blog/wp-content/gallery/p_867/bridal-party-white-flowers-40306.jpg">http://www.mywedding.com/blog/wp-content/gallery/p_867/bridal-party-white-flowers-40306.jpg</a></a> (from <a href="http://cameroningalls.com/emily-meeko-tiburon/" target="_blank">this wedding by Cameron Ingalls</a>)</p>
如果這些都是IMG的標籤，我可以從簡單的Appraoch得到它
String s="<img src="http://www.mywedding.com/blog/wp-content/gallery/p_867/bridal-party-white-flowers-40306.jpg"/>
s=s.replace("<img src=", "");
s=s.replace("/>", "");
但我很困惑，通過第一個場景，任何建議呢？