java正则表达式获取指定HTML标签的指定属性值且替换的方法

实例如下：

public static String repDomain(String source, String domain, String element, String attr) {

    String img = "";
    Pattern p_image;
    Matcher m_image;
    String regEx_img = "<" + element + "[^<>]*?\s" + attr + "=['"]?(.*?)['"]?(\s.*?)?>"; 
    p_image = Pattern.compile(regEx_img, Pattern.CASE_INSENSITIVE);
    m_image = p_image.matcher(source);
    while (m_image.find()) {
      img = m_image.group();
      Matcher m = Pattern.compile("href\s*=\s*"?(.*?)("|>|\s+)").matcher(img);
      while (m.find()) {
 String srcVal = m.group(1);
 if(srcVal.indexOf("/@tenant")>=0){
 	int idx = srcVal.indexOf("/@tenant");
 	StringBuffer temp = new StringBuffer();
 	String dstVal = temp.append(domain).append(srcVal.substring(idx+1)).toString();
 	source = source.replace(srcVal, dstVal);
 }
      }
    }
    return source;
  }

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