使用pinyin4j汉字转pinyin

引入maven依赖
<dependencies>
       <dependency>
       <groupId>com.belerweb</groupId>
       <artifactId>pinyin4j</artifactId>
       <version>2.5.0</version>
   </dependency>

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.io.UnsupportedEncodingException;


public class CNUtil {
   /**
    * 将汉字转换为全拼
    * 
    * @param src
    * @return String
    */
   public static String getPinYin(String src) {
      char[] t1 = null;
      t1 = src.toCharArray();
      // System.out.println(t1.length);
      String[] t2 = new String[t1.length];
      // System.out.println(t2.length);
      // 设置汉字拼音输出的格式
      HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat();
      t3.setCaseType(HanyuPinyinCaseType.LOWERCASE);
      t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
      t3.setVCharType(HanyuPinyinVCharType.WITH_V);
      String t4 = "";
      int t0 = t1.length;
      try {
         for (int i = 0; i < t0; i++) {
            // 判断是否为汉字字符
            // System.out.println(t1[i]);
            if (Character.toString(t1[i]).matches("[\u4E00-\u9FA5]+")) {
               t2 = PinyinHelper.toHanyuPinyinStringArray(t1[i], t3);// 将汉字的几种全拼都存到t2数组中
               if(t2 != null){
                  t4 += t2[0];// 取出该汉字全拼的第一种读音并连接到字符串t4后
               }
            } else {
               // 如果不是汉字字符，直接取出字符并连接到字符串t4后
               t4 += Character.toString(t1[i]);
            }
         }
      } catch (BadHanyuPinyinOutputFormatCombination e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
         //t4 = "abc";
      }
      return t4;
   }

   /**
    * 提取每个汉字的首字母
    * 
    * @param str
    * @return String
    */
   public static String getPinYinHeadChar(String str) {
      String convert = "";
      for (int j = 0; j < str.length(); j++) {
         char word = str.charAt(j);
         // 提取汉字的首字母
         String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(word);
         if (pinyinArray != null) {
            convert += pinyinArray[0].charAt(0);
         } else {
            convert += word;
         }
      }
      return convert;
   }

   /**
    * 将字符串转换成ASCII码
    * 
    * @param cnStr
    * @return String
    */
   public static String getCnASCII(String cnStr) {
      StringBuffer strBuf = new StringBuffer();
      // 将字符串转换成字节序列
      byte[] bGBK = cnStr.getBytes();
      for (int i = 0; i < bGBK.length; i++) {
         // System.out.println(Integer.toHexString(bGBK[i] & 0xff));
         // 将每个字符转换成ASCII码
         strBuf.append(Integer.toHexString(bGBK[i] & 0xff)+" ");
      }
      return strBuf.toString();
   }
   
   public static String getFirstUpperCase(String str){
      String buf = getPinYin(str).substring(0, 1);
      
      return buf.toUpperCase();
   }

   /**
    * 获得GBK编码的字符串长度
    * @param value
    * @return
    */
   public static int getGBKLength(String value){
      if(value==null){
         return 0;
      }
      try {
         return  value.getBytes("GBK").length;
      } catch (UnsupportedEncodingException e) {
         return 0;
      }
   }
   public static void main(String[] args) {
      String cnStr = "中华人民共和国";
      System.out.println(getPinYin(cnStr));
      System.out.println(getPinYinHeadChar(cnStr));
      System.out.println(getFirstUpperCase(cnStr));
//    System.out.println(getCnASCII(cnStr));
      System.out.println(String.format("%06d", 1));
   }

}