ChinesUtil.java

package com.opslab.util;


import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 一些中文相关的操作方法
 */
public final class ChinesUtil {
    private ChinesUtil(){

    }
    /**
     * 将字符串中的中文转化为拼音,其他字符不变
     *
     * @param inputString
     * @return
     */
    public final static String getPingYin(String inputString) {
        HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
        format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        format.setVCharType(HanyuPinyinVCharType.WITH_V);

        char[] input  = inputString.trim().toCharArray();
        String output = "";

        try {
            for (int i = 0; i < input.length; i++) {
                if (java.lang.Character.toString(input[i]).matches("[\\u4E00-\\u9FA5]+")) {
                    String[] temp = PinyinHelper.toHanyuPinyinStringArray(input[i], format);
                    output += temp[0];
                } else
                    output += java.lang.Character.toString(input[i]);
            }
        } catch (BadHanyuPinyinOutputFormatCombination e) {
            e.printStackTrace();
        }
        return output;
    }

    /**
     * 获取汉字串拼音首字母，英文字符不变
     *
     * @param chinese 汉字串
     * @return 汉语拼音首字母
     */
    public final static String getFirstSpell(String chinese) {
        StringBuffer            pybf          = new StringBuffer();
        char[]                  arr           = chinese.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] > 128) {
                try {
                    String[] temp = PinyinHelper.toHanyuPinyinStringArray(arr[i], defaultFormat);
                    if (temp != null) {
                        pybf.append(temp[0].charAt(0));
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pybf.append(arr[i]);
            }
        }
        return pybf.toString().replaceAll("\\W", "").trim();
    }

    /**
     * 获取汉字串拼音，英文字符不变
     *
     * @param chinese 汉字串
     * @return 汉语拼音
     */
    public final static String getFullSpell(String chinese) {
        StringBuffer            pybf          = new StringBuffer();
        char[]                  arr           = chinese.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] > 128) {
                try {
                    pybf.append(PinyinHelper.toHanyuPinyinStringArray(arr[i], defaultFormat)[0]);
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pybf.append(arr[i]);
            }
        }
        return pybf.toString();
    }


    // 只能判断部分CJK字符（CJK统一汉字）
    public final static boolean isChineseByREG(String str) {
        if (str == null) {
            return false;
        }
        Pattern pattern = Pattern.compile("[\\u4E00-\\u9FBF]+");
        return pattern.matcher(str.trim()).find();
    }

    // 只能判断部分CJK字符（CJK统一汉字）
    public final static boolean isChineseByName(String str) {
        if (str == null) {
            return false;
        }
        // 大小写不同：\\p 表示包含，\\P 表示不包含
        // \\p{Cn} 的意思为 Unicode 中未被定义字符的编码，\\P{Cn} 就表示 Unicode中已经被定义字符的编码
        String  reg     = "\\p{InCJK Unified Ideographs}&&\\P{Cn}";
        Pattern pattern = Pattern.compile(reg);
        return pattern.matcher(str.trim()).find();
    }


    // 完整的判断中文汉字和符号
    public final static boolean isChinese(String strName) {
        char[] ch = strName.toCharArray();
        for (int i = 0; i < ch.length; i++) {
            char c = ch[i];
            if (isChinese(c)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 判断是否是中文
     *
     * @param c
     * @return
     */
    public final 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;
    }

    /**
     * 获取一个字符串中中文字符的个数
     */
    public final static int ChineseLength(String str) {
        Pattern p = Pattern.compile("[\u4E00-\u9FA5]+");
        Matcher m = p.matcher(str);
        int     i = 0;
        while (m.find()) {
            String temp = m.group(0);
            i += temp.length();
        }
        return i;
    }

    /**
     * 判断是否是乱码
     *
     * @param strName
     * @return
     */
    public final 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 (!ChinesUtil.isChinese(c)) {
                    count = count + 1;
                }
                chLength++;
            }
        }
        float result = count / chLength;
        if (result > 0.4) {
            return true;
        } else {
            return false;
        }
    }
}