正则表达式验证密码（大小写字母、数字、特殊符号 四选三）

String patten = "^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-ZW_]+$)(?![a-z0-9]+$)(?![a-zW_]+$)(?![0-9W_]+$)[a-zA-Z0-9W_]{8,}$";

String password1 = "fukang";      // false
String password2 = "Fukanggggg";  // false
String password3 = "fukang123";   // false
String password4 = "Fukang123";   // true
String password5 = "##Fuk%%";     // false
String password6 = "###fukang%%"; // false
String password7 = "66FFFFFFFFFF";// false

System.out.println(password1.matches(patten));
System.out.println(password2.matches(patten));
System.out.println(password3.matches(patten));
System.out.println(password4.matches(patten));
System.out.println(password5.matches(patten));
System.out.println(password6.matches(patten));
System.out.println(password7.matches(patten));