java 正则表达式报错(Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ )
ftp:\/\/(([1-9]|([1-9]\d)|(1\d\d)|(2([0-4]\d|5[0-5])))\.)((\d|([1-9]\d)|(1\d\d)|(2([0-4]\d|5[0-5])))\.){2}([1-9]|([1-9]\d)|(1\d\d)|(2([0-4]\d|5[0-5])))(:(\d){1,5}){0,1}\/这是ftp url的正则表达式,在java中报错(Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ ) ,菜鸟不解,求大神解释 --------------------编程问答-------------------- 要转义的。\都换成\\就行了。 --------------------编程问答-------------------- 谢了,已解决
补充:Java , Java相关