package cn.cnnic.ops.learn;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class Luanma {

/**

* 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("abcd"));

System.out.println(isMessyCode("你好"));

}

}

 

 

【转自】http://blog.icoolxue.com/java-to-determine-whether-a-string-is-garbled-pro-testing-available/

放着，待用。