要拆分的字符串
abc:def:ghi\:klm:nop
字符串应基于":"分割,"\"是转义字符.所以"\:"不应被视为令牌.
split(":")给出
[abc]
[def]
[ghi\]
[klm]
[nop]
必需的输出是字符串数组
[abc]
[def]
[ghi\:klm]
[nop]
如何才能被忽略