boolean result=”101.99.255”.matches(“((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d)||(\d\d)||([1]\d\d)||([2][0-5][0-5]))”);
结果:true
boolean result=”101.99.255”.matches(“((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d\.)||(\d\d\.)||([1]\d\d\.)||([2][0-5][0-5]\.))((\d)||(\d\d)||([1]\d\d)||([2][0-5][0-5]))”);
结果:true