JAVA 使用正则提取A标签以及href链接

String content = "<p>下载地址：<a title=\"持续更新补丁下载地址\" target=\"_blank\" href=\"http://pan.baidu.com/s/xxxx\">持续更新补丁下载地址</a></p><p>";
Pattern pattern_a = compile("<a[^>]*href=(\\\"([^\\\"]*)\\\"|\\'([^\\']*)\\'|([^\\\\s>]*))[^>]*>(.*?)</a>");
Matcher matcher_a = pattern_a.matcher(content);
System.out.println("网站连接");
while (matcher_a.find()) {
    for (int i = 0; i < matcher_a.groupCount(); i++) {
System.out.println(matcher_a.group(i));
    }
}

Pattern pattern = Pattern.compile("采购(人名称|人单位|名称).*");
        Matcher matcher = pattern.matcher("采购名称乒位");
        String dateStr = null;
        if (matcher.find()) {
            dateStr = matcher.group(0);
            System.out.println(dateStr);
        }

Pattern pattern = Pattern.compile("[\\u4e00-\\u9fa5]");
        Matcher matcher = pattern.matcher("2322购购购购232323");
        String dateStr = null;
        if (matcher.find()) {
            dateStr = matcher.group(0);
            System.out.println(dateStr);
        }

Pattern pattern = Pattern.compile("1.*");
        Matcher matcher = pattern.matcher("2312购购购购232323");
        String dateStr = null;
        if (matcher.find()) {
            dateStr = matcher.group(0);
            System.out.println(dateStr);
        }