import org.passay.LengthRule; //导入依赖的package包/类
@Override
public boolean isValid(final String password, final ConstraintValidatorContext context) {
    // @formatter:off
    final PasswordValidator validator = new PasswordValidator(Arrays.asList(
        new LengthRule(8, 30), 
        new UppercaseCharacterRule(1), 
        new DigitCharacterRule(1), 
        new SpecialCharacterRule(1), 
        new NumericalSequenceRule(3,false),
        new AlphabeticalSequenceRule(3,false),
        new QwertySequenceRule(3,false),
        new WhitespaceRule()));
    final RuleResult result = validator.validate(new PasswordData(password));
    if (result.isValid()) {
        return true;
    }
    context.disableDefaultConstraintViolation();
    context.buildConstraintViolationWithTemplate(Joiner.on(",").join(validator.getMessages(result))).addConstraintViolation();
    return false;
}
 

import org.passay.LengthRule; //导入依赖的package包/类
private boolean passwordComplexityCheck(String password){

		PasswordValidator validator = new PasswordValidator(Arrays.asList(
				new LengthRule(8,20),
				new UppercaseCharacterRule(1),
				new LowercaseCharacterRule(1),
				new DigitCharacterRule(1),
				new SpecialCharacterRule(2),
				new WhitespaceRule()
		));
		RuleResult result = validator.validate(new PasswordData(password));
		if(result.isValid()){
			return true;
		}
		else{
			for (String msg : validator.getMessages(result)) {
				Toast.makeText(this, msg,Toast.LENGTH_SHORT).show();
			}
			return false;
		}
	}
 

import org.passay.LengthRule; //导入依赖的package包/类
@Override
public boolean isValid(final String password, final ConstraintValidatorContext context) {
    final PasswordValidator validator = new PasswordValidator(singletonList(
        new LengthRule(8, 30)
        // More rules can be added to increase security
    ));

    final RuleResult result = validator.validate(new PasswordData(password));
    if (result.isValid()) {
        return true;
    }

    context.disableDefaultConstraintViolation();
    context.buildConstraintViolationWithTemplate(
        validator.getMessages(result).stream().collect(joining("\n"))
    ).addConstraintViolation();

    return false;
}
 

import org.passay.LengthRule; //导入依赖的package包/类
@Override
public boolean isValid(final String password, final ConstraintValidatorContext context) {
    final PasswordValidator validator = new PasswordValidator(Arrays.asList(new LengthRule(8, 30), new UppercaseCharacterRule(1), new DigitCharacterRule(1), new SpecialCharacterRule(1), new WhitespaceRule()));
    final RuleResult result = validator.validate(new PasswordData(password));
    if (result.isValid()) {
        return true;
    }
    context.disableDefaultConstraintViolation();
    context.buildConstraintViolationWithTemplate(Joiner.on("\n").join(validator.getMessages(result))).addConstraintViolation();
    return false;
}
 

import org.passay.LengthRule; //导入依赖的package包/类
public SecurityPasswordRulesBuilder minLength(int min) {
	rules.add(new LengthRule(min, Integer.MAX_VALUE));
	return this;
}
 

import org.passay.LengthRule; //导入依赖的package包/类
public SecurityPasswordRulesBuilder maxLength(int max) {
	rules.add(new LengthRule(0, max));
	return this;
}
 

import org.passay.LengthRule; //导入依赖的package包/类
public SecurityPasswordRulesBuilder minMaxLength(int min, int max) {
	rules.add(new LengthRule(min, max));
	return this;
}