用Java转化汉字为拼音

package com.javer.blog.common;

import java.io.UnsupportedEncodingException;

/**
* 取得给定汉字串的首字母串,即声母串
* <p>Title: ChineseCharToEn</p>
* <p>@author javer QQ:84831612</p>
* @version 1.0
* @date 2004-02-19
* 注：只支持GB2312字符集中的汉字
*/
public final class ChineseCharToEn
{
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);
}
}

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;
}
}
　

　　测试代码：

package com.javer.test;

import com.javer.blog.common.ChineseCharToEn;

/**
* 测试程序
* <p>Title: JaverTest</p>
* @author javer QQ:84831612
*/
public class JaverTest
{
public static void main(String[] args)
{
ChineseCharToEn cte = new ChineseCharToEn();
System.out.println("/"夜未眠/"的首个拼音字母是：" + cte.getFirstLetter("夜未眠"));
System.out.println("/"Javer夜未眠/"的首个拼音字母是：" + cte.getFirstLetter("Javer夜未眠"));
System.out.println("/"Javer夜未眠/"的全部字母的拼音字母是：" + cte.getAllFirstLetter("Javer夜未眠"));
}
} 

　　运行结果：

"夜未眠"的首个拼音字母是：y
"Javer夜未眠"的首个拼音字母是：J
"Javer夜未眠"的全部字母的拼音字母是：Javerywm