https://www.vipvideoplay/mbox/homepage?short=（等号后面里是七位任意大小写字母和数字）的正则表达式，怎么写呢？
https\:\/\/www\.vipvideoplay\/mbox\/homepage\?short\=[a-zA-Z0-9]{7}
https:\/\/www.vipvideoplay\/mbox\/homepage\?short\=[a-zA-Z0-9]{7}