String PW_PATTERN = "^(?![A-Za-z0-9]+$)(?![a-z0-9\\W]+$)(?![A-Za-z\\W]+$)(?![A-Z0-9\\W]+$)[a-zA-Z0-9\\W]{8,}$"; String pw1 = "ABCDEFGHIG"; String pw2 = "abcdefghig"; String pw3 = "0123456789"; String pw4 = "!@#$%^&*()"; String pw5 = "ABCDEabcde"; String pw6 = "ABCDE01234"; String pw7 = "ABCDE!@#$%"; String pw8 = "abcde01234"; String pw9 = "abcde!@#$%"; String pw10 = "01234!@#$%"; String pw11 = "abcde01234!@#$%"; String pw12 = "ABCDE01234!@#$%"; String pw13 = "ABCDEabcde!@#$%"; String pw14 = "ABCDEabcde01234"; String pw15 = "Aa0!"; //符合要求密码 String pw16="ABCabc012!@#"; System.out.println(pw1.matches(PW_PATTERN)); System.out.println(pw2.matches(PW_PATTERN)); System.out.println(pw3.matches(PW_PATTERN)); System.out.println(pw4.matches(PW_PATTERN)); System.out.println(pw5.matches(PW_PATTERN)); System.out.println(pw6.matches(PW_PATTERN)); System.out.println(pw7.matches(PW_PATTERN)); System.out.println(pw8.matches(PW_PATTERN)); System.out.println(pw9.matches(PW_PATTERN)); System.out.println(pw10.matches(PW_PATTERN)); System.out.println(pw11.matches(PW_PATTERN)); System.out.println(pw12.matches(PW_PATTERN)); System.out.println(pw13.matches(PW_PATTERN)); System.out.println(pw14.matches(PW_PATTERN)); System.out.println(pw15.matches(PW_PATTERN)); System.out.println(pw16.matches(PW_PATTERN));