Java实现汉字拼音转换和关键字分词（pinyin4j、hanlp）

文章目录

• pinyin4j
• hanlp
• 关键字分词

pinyin4j

1. 添加maven依赖

<dependency>
    <groupId>com.belerweb</groupId>
    <artifactId>pinyin4j</artifactId>
    <version>2.5.0</version>
</dependency>

2. 获取文本拼音

 /**
  * 获取文本拼音
  * @param context 文本内容
  * @param existNotPinyin 是否保存非汉字
  * @return String 拼音
  */
private String pinyinTest(String context, boolean existNotPinyin) {
     if (context == null || context.trim().length() <= 0) {
         return null;
     }
     //设置格式
     HanyuPinyinOutputFormat outputFormat = new HanyuPinyinOutputFormat();
     //WITHOUT_TONE 不带音标、WITH_TONE_NUMBER 带数字音标、WITH_TONE_MARK 带符号音标
     outputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
     char[] chars = context.trim().toCharArray();
     StringBuilder builder = new StringBuilder();
     try {
         for (char aChar : chars) {
             String[] pinyin = PinyinHelper.toHanyuPinyinStringArray(aChar, outputFormat);
             //不是汉字会返回null
             if (pinyin == null || pinyin.length <= 0) {
                 if (existNotPinyin) {
                     builder.append(aChar);
                 }
                 continue;
             }
             //多音字的情况取第一个（也可以全取）
             builder.append(pinyin[0]);
         }
     } catch (BadHanyuPinyinOutputFormatCombination e) {
         e.printStackTrace();
     }
     return builder.toString().toUpperCase();
 }

3. 测试用例

@Test
public void test() {
    String temp = "我爱罗52";
    String list = pinyinTest(temp, false); //WOAILUO
}

hanlp

1. 添加Maven依赖

<dependency>
    <groupId>com.hankcs</groupId>
    <artifactId>hanlp</artifactId>
    <version>portable-1.8.4</version>
</dependency>

2. 获取文本拼音

 /**
  * 获取文本拼音
  * @param context 文本内容
  * @param existNotPinyin 是否保存非汉字
  * @return String 拼音
  */
private String hanLpTest(String content, Boolean existNotPinyin) {
	if (context == null || context.trim().length() <= 0) {
         return null;
     }
    if (existNotPinyin) {
        return HanLP.convertToPinyinString(content, "", false).toUpperCase();
    }
    List<Pinyin> pinyinList = HanLP.convertToPinyinList(content);
    StringBuilder builder = new StringBuilder();
    pinyinList.forEach(pinyin -> {
        if (pinyin == null || Pinyin.none5.equals(pinyin)) {
            return;
        }
        builder.append(pinyin.getPinyinWithoutTone());
    });
    return builder.toString().toUpperCase();
}

3. 测试用例

@Test
public void test() {
    String temp = "我爱罗52";
    System.out.println(hanLpTest(temp, true)); //WOAILUO52
}

关键字分词

1. 正则表达式

/**
 * 分词正则表达式
 */
private final String SPLIT_WORD_REG_EX = "[^aoeiuv]?h?[iuv]?(ai|ei|ao|ou|er|ang?|eng?|ong|a|o|e|i|u|ng|n)?";

2. 获取分词结果

/**
 * 关键字分词
 * @param keyword 关键字
 * @return List<String> 分词列表
 */
private List<String> splitTest(String keyword) {
	if (context == null || context.trim().length() <= 0) {
         return Collections.emptyList();
     }
    List<String> keywordList = new ArrayList<>();
    int index = 0;
    Pattern pat = Pattern.compile(SPLIT_WORD_REG_EX);
    for (int i = keyword.length(); i > 0; i = i - index) {
        Matcher matcher = pat.matcher(keyword);
        if (!matcher.find()) {
            break;
        }
        keywordList.add(matcher.group());
        index = matcher.end() - matcher.start();
        keyword = keyword.substring(index);
    }
    return keywordList;
}

3. 测试用例

 @Test
 public void test() {
     String temp = "我爱罗52";
     List<String> list = splitTest(temp);
     System.out.println(list); //[我, 爱, 罗, 5, 2]
 }