package com.example.dabutaizha.lines;

import java.io.UnsupportedEncodingException;

/**

* Copyright (C) 2018 Unicorn, Inc.

* Description :

* Created by dabutaizha on 2018/4/8 下午3:56.

*/

public class ChineseCharToEnUtil {

private final static int[] li_SecPosValue = { 1601, 1637, 1833, 2078, 2274,

2302, 2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858,

4027, 4086, 4390, 4558, 4684, 4925, 5249, 5590 };

private final static String[] lc_FirstLetter = { "a", "b", "c", "d", "e",

"f", "g", "h", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",

"t", "w", "x", "y", "z" };

/**

* 取得给定汉字串的首字母串,即声母串

* @param str 给定汉字串

* @return 声母串

*/

public String getAllFirstLetter(String str) {

if (str == null || str.trim().length() == 0) {

return "";

}

String _str = "";

for (int i = 0; i < str.length(); i++) {

_str = _str + this.getFirstLetter(str.substring(i, i + 1));

}

return _str;

}

/**

* 取得给定汉字的首字母,即声母

* @param chinese 给定的汉字

* @return 给定汉字的声母

*/

public String getFirstLetter(String chinese) {

if (chinese == null || chinese.trim().length() == 0) {

return "";

}

chinese = this.conversionStr(chinese, "GB2312", "ISO8859-1");

if (chinese.length() > 1) // 判断是不是汉字

{

int li_SectorCode = (int) chinese.charAt(0); // 汉字区码

int li_PositionCode = (int) chinese.charAt(1); // 汉字位码

li_SectorCode = li_SectorCode - 160;

li_PositionCode = li_PositionCode - 160;

int li_SecPosCode = li_SectorCode * 100 + li_PositionCode; // 汉字区位码

if (li_SecPosCode > 1600 && li_SecPosCode < 5590) {

for (int i = 0; i < 23; i++) {

if (li_SecPosCode >= li_SecPosValue[i]

&& li_SecPosCode < li_SecPosValue[i + 1]) {

chinese = lc_FirstLetter[i];

break;

}

}

} else // 非汉字字符,如图形符号或ASCII码

{

chinese = this.conversionStr(chinese, "ISO8859-1", "GB2312");

chinese = chinese.substring(0, 1);

}

}

chinese = chinese.toUpperCase();

return chinese;

}

/**

* 字符串编码转换

* @param str 要转换编码的字符串

* @param charsetName 原来的编码

* @param toCharsetName 转换后的编码

* @return 经过编码转换后的字符串

*/

private String conversionStr(String str, String charsetName,String toCharsetName) {

try {

str = new String(str.getBytes(charsetName), toCharsetName);

} catch (UnsupportedEncodingException ex) {

System.out.println("字符串编码转换异常：" + ex.getMessage());

}

return str;

}

}



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