说明：  中文转换成拼音的开源工具 方法有 1.获取拼音集合 2.字符串集合转换字符串(逗号分隔)3.获取汉字串拼音首字母，英文字符不变
( Chinese pinyin converted into open source tool methods set 2. 1. Obtain Pinyin string set string conversion (comma separated) 3. Being Chinese Characters Pinyin initials, English characters intact)