自定义UDF函数：将汉字转换成拼音

深藏阁楼爱情的钟 2022-05-28 05:14 231阅读 0赞

工作需求要讲汉字转换成拼音，自定义UDF函数

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 org.apache.hadoop.hive.ql.exec.Description;
    import org.apache.hadoop.hive.ql.exec.UDF;
    import org.apache.hadoop.io.Text;
    import com.sun.tools.javadoc.Main;
    
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    /**
     * 该方法主要实现将汉字转换成对应的拼音。
     */
    @Description(name = "pinyin"
            , value = "_FUNC_(string) - get pinyin by given chinese."
            , extended = "Example:\n > select _FUNC_(string) from src;")
    //方法名称:UDFChineseToPinYin
    public class  UDFChineseToPinYin  extends UDF {
        private Text result = new Text();
        public UDFChineseToPinYin() {
        }
    
        public Text evaluate(Text chinese) {
            if (chinese == null) {
                return null;
            }
    
            result.set(ConvertToPinyin(chinese.toString()));
            return result;
        }
       
        public String ConvertToPinyin(String name) {
            HanyuPinyinOutputFormat pyFormat = new HanyuPinyinOutputFormat();
            pyFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            pyFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            pyFormat.setVCharType(HanyuPinyinVCharType.WITH_V);
    
            String result = null;
            try {
                result = PinyinHelper.toHanyuPinyinString(name, pyFormat, "");
            } catch (BadHanyuPinyinOutputFormatCombination e) {
                return null;
            }
    
            return result;
        }
        
        //main方法里面测试，将汉语转换成拼音输出
        public static void main(String[] args) {
        	UDFChineseToPinYin udfpy = new UDFChineseToPinYin();
        	System.out.println(udfpy.evaluate(new Text("你好，祖玛朗玛峰")));
            System.out.println(udfpy.evaluate(new Text("你好，不着调，着急")));
    	}
    }
    //测试结果如下：很明显，当出现多音字时则会出现错误的情况。
    nihao，zumalangmafeng
    nihao，buzhediao，zheji