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谁能帮我理解为什么这行不通
public boolean validatePassword(String pass){
final int MIN_LENGTH = 6;// Minimum length 6
// check if password is correct length and that it does not
// contain any invalid characters
if(pass.length() >= MIN_LENGTH && !pass.matches("(.*)[^.-_+!?=a-zA-Z0-9](.*)")){
// 4 rules, 3 should be fulfilled
// 1: Contain upper characters (A-Z)
// 2: Contain lower characters (a-z)
// 3: Contain numbers (0-9)
// 4: Contain following character . - _ + ! ? =
int ruleCount = 0; // counting fulfilled rules
if(pass.matches("(.*)[A-Z](.*)")) ruleCount++;
if(pass.matches("(.*)[a-z](.*)")) ruleCount++;
if(pass.matches("(.*)[0-9](.*)")) ruleCount++;
if(pass.matches("(.*)[.-_+!?=](.*)")) ruleCount++;
if(ruleCount >= 3) return true; // password verified
}
// password not verified
return false;
}
出于某种原因，它接受包含大写字母和小写字母的密码，并且还会验证包含数字和小写字母的密码。但它应该只验证是否满足了 3 个 for 规则。