//使用正则表达式
//Pattern pattern = Pattern.compile("[^u4E00-u9FA5]");//[u4E00-u9FA5]是unicode2的中文区间
Pattern pattern = Pattern.compile("用户");
Matcher matcher = pattern.matcher("用户15454");
String str = "搬运工"+"-"+matcher.replaceAll("");
System.out.println(str);