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// ¹ýÂËÌØÊâ×Ö·û
public static String StringFilter(String str) throws PatternSyntaxException {
// Ö»ÔÊÐí×ÖĸºÍÊý×Ö
// String regEx = "[^a-zA-Z0-9]";
// Çå³ýµôËùÓÐÌØÊâ×Ö·û
String regEx="[`~!@#$%^&*()+=|{}':;',\\[\\].<>/?~£¡@#£¤%……&*£¨£©——+|{}¡¾¡¿‘£»£º”“’¡££¬¡¢£¿]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(str);
return m.replaceAll("").trim();
}

public void testStringFilter() throws PatternSyntaxException {
String str = "*adCVs*34_a _09_b5*[/435^*&³Ç³Ø()^$$&*).{}+.|.)%%*(*.Öйú}34{45[]12.fd'*&999ÏÂÃæÊÇÖÐÎĵÄ×Ö·û£¤……{}¡¾¡¿¡££¬£»’“‘”£¿";
System.out.println(str);
System.out.println(StringFilter(str));
}
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