汉字转拼音

from:https://www.cnblogs.com/shikyoh/p/6270026.html

网上有很多说自己整理的汉字转拼音是完美的，但使用后才发现都是半吊的瓶子，问题多多。

常见的生僻字，或多音字识别，转换后简直让人感觉可怕。

主流的转换有三种：hash匹配，Npinyin，微软PinYinConverter。

但单用这三个，都没法做到完美，为什么没人考虑融合呢？

我的方案：Npinyin+微软PinYinConverter（首选Npinyin）

微软PinYinConverter

为什么：微软PinYinConverter很强大，但在多音字面前，犯了传统的错误，按拼音字母排序。如【强】微软居然优先【jiang】而不是】【qiang】

所以不能优选 PinYinConverter。

Npinyin

很人性，很不错的第三方库，在传统多音字前优先使用率较高的，但在生僻字面前有点无法转换。（GetInitials(strChinese)  有Bug  如【洺】无法识别，但GetPinyin可以正常转换。）

总结：优先Npinyin  翻译失败的使用微软PinYinConverter。目测完美。

上代码：

public class PingYinHelper
    {
        private static Encoding gb2312 = Encoding.GetEncoding("GB2312");

        /// <summary>
        /// 汉字转全拼
        /// </summary>
        /// <param name="strChinese"></param>
        /// <returns></returns>
        public static string ConvertToAllSpell(string strChinese)
        {
            try
            {
                if (strChinese.Length != 0)
                {
                    StringBuilder fullSpell = new StringBuilder();
                    for (int i = 0; i < strChinese.Length; i++)
                    {
                        var chr = strChinese[i];
                        fullSpell.Append(GetSpell(chr));
                    }

                    return fullSpell.ToString().ToUpper();
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("全拼转化出错！" + e.Message);
            }

            return string.Empty;
        }

        /// <summary>
        /// 汉字转首字母
        /// </summary>
        /// <param name="strChinese"></param>
        /// <returns></returns>
        public static string GetFirstSpell(string strChinese)
        {
            //NPinyin.Pinyin.GetInitials(strChinese)  有Bug  洺无法识别
            //return NPinyin.Pinyin.GetInitials(strChinese);

            try
            {
                if (strChinese.Length != 0)
                {
                    StringBuilder fullSpell = new StringBuilder();
                    for (int i = 0; i < strChinese.Length; i++)
                    {
                        var chr = strChinese[i];
                        fullSpell.Append(GetSpell(chr)[0]);
                    }

                    return fullSpell.ToString().ToUpper();
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("首字母转化出错！" + e.Message);
            }

            return string.Empty;
        }

        private static string GetSpell(char chr)
        {
            var coverchr = NPinyin.Pinyin.GetPinyin(chr);

            bool isChineses = ChineseChar.IsValidChar(coverchr[0]);
            if (isChineses)
            {
                ChineseChar chineseChar = new ChineseChar(coverchr[0]);
                foreach (string value in chineseChar.Pinyins)
                {
                    if (!string.IsNullOrEmpty(value))
                    {
                        return value.Remove(value.Length - 1, 1);
                    }
                }
            }

            return coverchr;

        }
    }

抽了几个常见错字和姓名

测试如下：

 [TestMethod]
        public void PingyinTest()
        {
            Dictionary<string, Tuple<string, string>> dict = new
                Dictionary<string, Tuple<string, string>>() {
            {"梅钰", new Tuple<string,string>( "meiyu","MY")},
            {"张洺", new Tuple<string,string>( "zhangming","ZM")},
            {"王玥", new Tuple<string,string>( "wangyue","WY")},
            {"王思琪", new Tuple<string,string>( "wangsiqi","WSQ")},
            {"董云强", new Tuple<string,string>( "dongyunqiang","DYQ")},
            {"宋红培", new Tuple<string,string>( "songhongpei","SHP")},
            {"石磊", new Tuple<string,string>( "shilei","SL")},
            };

            foreach (var keyval in dict)
            {
                var name = keyval.Key;

                var spell1 = keyval.Value.Item1;
                var spell2 = keyval.Value.Item2;

                var val = ChineseSpell.ConvertToAllSpell(name).TrimAll();

                val = FlexLogicFramework.Library.CommonLib.PingYinHelper.ConvertToAllSpell(name)
                    .TrimAll().ToLower();

                Assert.IsTrue(val == spell1, "转换错误");

                val = FlexLogicFramework.Library.CommonLib.ChineseSpell.GetFirstSpell(name).TrimAll();

                val = FlexLogicFramework.Library.CommonLib.PingYinHelper.GetFirstSpell(name).TrimAll();

                Assert.IsTrue(val == spell2, "转换错误");
            }

        }