Java判断中文字符串是否乱码
http://my.oschina.net/cevin15/blog/402975
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Java代码 import java.util.regex.Matcher; import java.util.regex.Pattern; public class ChineseUtill { private static boolean isChinese(char c) { Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) { return true; } return false; } public static boolean isMessyCode(String strName) { Pattern p = Pattern.compile("\\s*|\t*|\r*|\n*"); Matcher m = p.matcher(strName); String after = m.replaceAll(""); String temp = after.replaceAll("\\p{P}", ""); char[] ch = temp.trim().toCharArray(); float chLength = 0 ; float count = 0; for (int i = 0; i < ch.length; i++) { char c = ch[i]; if (!Character.isLetterOrDigit(c)) { if (!isChinese(c)) { count = count + 1; } chLength++; } } float result = count / chLength ; if (result > 0.4) { return true; } else { return false; } } public static String toChinese(String msg){ if(isMessyCode(msg)){ try { return new String(msg.getBytes("ISO8859-1"), "UTF-8"); } catch (Exception e) { } } return msg ; } } |
