具体代码如下所示：

/** * 判断字符是否是中文 * * @param c 字符 * @return 是否是中文 */ public 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; } /** * 判断字符串是否是乱码 * * @param strName 字符串 * @return 是否是乱码 */ 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 = ch.length; 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; } } } float result = count / chLength; if (result > 0.4) { return true; } else { return false; } } public static void main(String[] args) { System.out.println(isMessyCode("韩顺平")); System.out.println(isMessyCode("你好")); }

总结

以上所述是小编给大家介绍的Java判断字符串是否含有乱码实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！