String s = "sfds55d66s76455dfg32434eertertre";
String regEx = "[^0-9]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(s);
String result = m.replaceAll("").trim();
System.out.println(result);原文链接:http://www.imooc.com/wenda/detail/342252
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