ChineseToFirstLetterUtil.java
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package com.lhcredit.common.utils;
import com.alibaba.fastjson.JSON;
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.exception.BadHanyuPinyinOutputFormatCombination;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 提取汉字首字母工具类
*/
public class ChineseToFirstLetterUtil {
private static Map<String, List<String>> pinyinMap = new HashMap<String, List<String>>();
static{
initPinyin();
}
/**
* 初始化 所有的多音字词组
*/
public static void initPinyin() {
// 读取多音字的全部拼音表;
InputStream file = PinyinHelper.class.getResourceAsStream("/pinyin/duoyinzi_dict.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(file));
String s = null;
try {
while ((s = br.readLine()) != null) {
if (s != null) {
String[] arr = s.split("#");
String pinyin = arr[0];
String chinese = arr[1];
if(chinese!=null){
String[] strs = chinese.split(" ");
List<String> list = Arrays.asList(strs);
pinyinMap.put(pinyin, list);
}
}
}
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static String ChineseToFirstLetter(String c) {
String string = "";
char b;
int a = c.length();
for (int k = 0; k < a; k++) {
b = c.charAt(k);
String d = String.valueOf(b);
String str = converterToFirstSpell(d,c);
String s = str.toUpperCase();
String g = s;
char h;
int j = g.length();
for (int y = 0; y <= 0; y++) {
h = g.charAt(0);
string += h;
}
}
return string;
}
public static String converterToFirstSpell(String chines,String chinese) {
String pinyinName = "";
char[] nameChar = chines.toCharArray();
HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
for (int i = 0; i < nameChar.length; i++) {
String sc = String.valueOf(nameChar[i]);
if (sc.matches("[\\u4e00-\\u9fa5]")) {
try {
String[] mPinyinArray = PinyinHelper.toHanyuPinyinStringArray(nameChar[i], defaultFormat);
if (mPinyinArray == null) { //非中文
return "";
} else {
int len = mPinyinArray.length;
if (len == 1) { // 不是多音字
String py = mPinyinArray[0];
if (py.contains("u:")) { //过滤 u:
py = py.replace("u:", "v");
}
pinyinName += mPinyinArray[0];
} else if (mPinyinArray[0].equals(mPinyinArray[1])) { //非多音字 有多个音，取第一个
pinyinName += mPinyinArray[0];
} else { // 多音字
int length = chinese.length();
boolean flag = false;
String s = "";
List<String> keyList = null;
for (int x = 0; x < len; x++) {
String py = mPinyinArray[x];
if (py.contains("u:")) { //过滤 u:
py = py.replace("u:", "v");
}
keyList = pinyinMap.get(py);
if (i + 3 <= length) { //后向匹配2个汉字 大西洋
s = chinese.substring(i, i + 3);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
flag = true;
break;
}
}
if (i + 2 <= length) { //后向匹配 1个汉字 大西
s = chinese.substring(i, i + 2);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
flag = true;
break;
}
}
if ((i - 2 >= 0) && (i + 1 <= length)) { // 前向匹配2个汉字 龙固大
s = chinese.substring(i - 2, i + 1);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
flag = true;
break;
}
}
if ((i - 1 >= 0) && (i + 1 <= length)) { // 前向匹配1个汉字 固大
s = chinese.substring(i - 1, i + 1);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
flag = true;
break;
}
}
if ((i - 1 >= 0) && (i + 2 <= length)) { //前向1个，后向1个 固大西
s = chinese.substring(i - 1, i + 2);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
flag = true;
break;
}
}
}
if (!flag) { //都没有找到，匹配默认的 读音 大
s = String.valueOf(nameChar[i]);
for (int x = 0; x < len; x++) {
String py = mPinyinArray[x];
if (py.contains("u:")) { //过滤 u:
py = py.replace("u:", "v");
}
keyList = pinyinMap.get(py);
if (keyList != null && (keyList.contains(s))) {
pinyinName += py;
break;
}else{
pinyinName += mPinyinArray[0];
break;
}
}
}
}
}
} catch (BadHanyuPinyinOutputFormatCombination e) {
e.printStackTrace();
}
} else {
pinyinName += nameChar[i];
}
}
return pinyinName;
}
/**
* 将某个字符串的首字母 大写
* @param str
* @return
*/
public static String convertInitialToUpperCase(String str){
if(str==null){
return null;
}
StringBuffer sb = new StringBuffer();
char[] arr = str.toCharArray();
for(int i=0;i<arr.length;i++){
char ch = arr[i];
if(i==0){
sb.append(String.valueOf(ch).toUpperCase());
}else{
sb.append(ch);
}
}
return sb.toString();
}
public static void main(String[] args) {
// System.err.println(ChineseToFirstLetter("重庆"));
// System.err.println(ChineseToFirstLetter("长沙"));
// System.err.println(ChineseToFirstLetter("武汉"));
System.err.println(ChineseToFirstLetter("陆家嘴信托"));
}
}