1、将list转换为“,”隔开的字符串
//videoIdList值转换成 1,2,3 String videoIds = StringUtils.join(videoIdList.toArray(), ",");
2、取字符串的开始到最后 "." ;如(01.03.09.mp4 取后就为:01.03.09)
String title = fileName.substring(0, fileName.lastIndexOf("."));
1、将list转换为“,”隔开的字符串
//videoIdList值转换成 1,2,3 String videoIds = StringUtils.join(videoIdList.toArray(), ",");
2、取字符串的开始到最后 "." ;如(01.03.09.mp4 取后就为:01.03.09)
String title = fileName.substring(0, fileName.lastIndexOf("."));