Java获取名字首字母拼音及用户按名字拼音分组工具

一、需求分析

最近在做一个类似于微信用户通讯录的功能，所以考虑通过查找的好友列表，在后台遍历按照26个字母分组，前台获取到Json循环26个字母直接解析对应的字符下的名称为一组分隔，没有则不显示，工具如下↓

二、引入Pom

		<dependency>
		    <groupId>com.belerweb</groupId>
		    <artifactId>pinyin4j</artifactId>
		    <version>2.5.1</version>
		</dependency>	

三、代码工具

import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import ev.viewworld.model.sysuser;
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;
public class changeChinesePinyinUtil {
	/**
	 * 获取姓名全拼和首字母
	 * @author 于公成
	 * @param  chinese 汉语名称
	 * @return fullPinyin : 全拼        simplePinyin ： 首字母  groupPinyin：微信用户组第一个字母
	 * @throws BadHanyuPinyinOutputFormatCombination
	 */
	public static Map<String, String> changeChinesePinyin(String chinese) throws BadHanyuPinyinOutputFormatCombination { 
			Map<String, String> pinyin = new HashMap<String, String>(); 
	
			HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat(); 
			format.setCaseType(HanyuPinyinCaseType.LOWERCASE); 
			format.setToneType(HanyuPinyinToneType.WITHOUT_TONE); 
			format.setVCharType(HanyuPinyinVCharType.WITH_V); 
	
			StringBuffer fullPinyin = new StringBuffer(); 
			StringBuffer simplePinyin = new StringBuffer(); 
			StringBuffer firstPinyin = new StringBuffer(); 

			char[] chineseChar = chinese.toCharArray(); 
			for (int i = 0; i < chineseChar.length; i++) { 
					String[] str = null;  
				try { 
					str = PinyinHelper.toHanyuPinyinStringArray(chineseChar[i], 
					format); 
				} catch (BadHanyuPinyinOutputFormatCombination e) { 
					e.printStackTrace();
				} 
				if (str != null) { 
					fullPinyin = fullPinyin.append(str[0].toString()); 
					simplePinyin = simplePinyin.append(str[0].charAt(0)); 
				
				} 
					if (str == null) { 
					String regex = "^[0-9]*[a-zA-Z]*+$"; 
					Pattern pattern = Pattern.compile(regex); 
					Matcher m = pattern.matcher(String.valueOf(chineseChar[i])); 
						if (m.find()) { 
							fullPinyin = fullPinyin.append(chineseChar[i]); 
							simplePinyin = simplePinyin.append(chineseChar[i]); 
						} 
					} 
			} 
			String[] name = PinyinHelper.toHanyuPinyinStringArray(chineseChar[0],format); 
			firstPinyin=firstPinyin.append(name[0].charAt(0));			
			pinyin.put("fullPinyin", fullPinyin.toString()); 
			pinyin.put("simplePinyin", simplePinyin.toString().toUpperCase()); 
			pinyin.put("groupPinyin", firstPinyin.toString().toUpperCase());
			return pinyin; 
			} 
	/**
	 * 按拼音首字母分组
	 * @author 于公成
	 * @param list
	 * @return
	 * @throws BadHanyuPinyinOutputFormatCombination
	 */
	public static Map<String, Object> getCodeGroup(List<String> list) throws BadHanyuPinyinOutputFormatCombination {
		Comparator<Object> com = Collator.getInstance(java.util.Locale.CHINA);
		//按字母排序
		Collections.sort(list, com);
		//输出26个字母
		Map<String, Object> map = new TreeMap<String, Object>();
		for(int i=1;i<=26;i++){
		String word = String. valueOf((char) (96 + i)). toUpperCase();
		//循环找出首字母一样的数据
		List<String> letter = new ArrayList<String>();
		for (String str : list) {
			String code=changeChinesePinyin(str).get("groupPinyin");
			if(word.equals(code)) {
				letter.add(str);
			}
			System.out.println(str);
		}
		map.put(word, letter);
		}
		System.out.println(map);
		return map;
	}
		
	/**
	 * @author 于公成
	 * 按用户拼音首字母分组
	 * @param list
	 * @return
	 * @throws BadHanyuPinyinOutputFormatCombination
	 */
	public static Map<String, List<sysuser>> getUserCodeGroup(List<sysuser> list) throws BadHanyuPinyinOutputFormatCombination {
		//Collections工具类的sort()方法对list集合元素排序　
		Collections.sort(list,new Comparator<sysuser>(){
		    @Override
		    public int compare(sysuser o1, sysuser o2) {
		        //获取中文环境
		        Comparator<Object> com = Collator.getInstance(java.util.Locale.CHINA);
		        return com.compare(o1.getRealname(),o2.getRealname());
		    }
		});
		
		//输出26个字母
		Map<String, List<sysuser>> map = new TreeMap<String, List<sysuser>>();
		for(int i=1;i<=26;i++){
		String word = String. valueOf((char) (96 + i)). toUpperCase();
		//循环找出首字母一样的数据
		List<sysuser> letter = new ArrayList<sysuser>();
		for (sysuser str : list) {
			
			String code=changeChinesePinyin(str.getRealname()).get("groupPinyin");
			if(word.equals(code)) {
				letter.add(str);
			}
			System.out.println(str);
		}
		map.put(word, letter);
		}
		System.out.println(map);
		return map;
	}
		
	
	public static void main(String[] args) throws BadHanyuPinyinOutputFormatCombination {
//		System.out.println(changeChinesePinyin("于公成").get("groupPinyin"));
		List<String> list=new ArrayList<String>();
		list.add("于公成");
		list.add("由于工程");
		list.add("与工程");
		list.add("王为");
		list.add("刘汝祥");
		list.add("阿宝");
		list.add("阿亮");
		getCodeGroup(list);
	}
}

三、最终结果