Passay 简明教程
Passay - LengthComplexityRule
LengthComplexityRule 有助于根据密码长度定义其适用的规则。请考虑以下策略。
LengthComplexityRule helps in defining the applicable rule on a password based on its length. Consider the following policy.
-
If length of password is in between 1 to 5 characters, only lower case alphabets are allowed.
-
If length of password is in between 6 to 8 characters, then only a, b and c are allowed.
Example
以下示例显示了使用 Passay 库根据上述策略对密码进行验证的过程。
The below example shows the validation of a password against above policy using Passay library.
import org.passay.AllowedCharacterRule;
import org.passay.CharacterRule;
import org.passay.EnglishCharacterData;
import org.passay.LengthComplexityRule;
import org.passay.PasswordData;
import org.passay.PasswordValidator;
import org.passay.RuleResult;
public class PassayExample {
public static void main(String[] args) {
LengthComplexityRule lengthComplexityRule = new LengthComplexityRule();
//Rule: Password of 1 to 5 characters should contains lower case alphabets only
lengthComplexityRule.addRules("[1,5]",
new CharacterRule(EnglishCharacterData.LowerCase, 5));
//8 and 16 characters
lengthComplexityRule.addRules("[6,8]",
new AllowedCharacterRule(new char[] { 'a', 'b', 'c' }));
PasswordValidator validator = new PasswordValidator(lengthComplexityRule);
PasswordData password = new PasswordData("abcdef");
RuleResult result = validator.validate(password);
if(result.isValid()){
System.out.println("Password validated.");
}else{
System.out.println("Invalid Password: " + validator.getMessages(result));
}
}
}