Java 密码检查

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我遇到的问题是让它在确认密码之前重复第一个密码过程。

The password must be at least 8 characters long.

The password must contain at least:

• one alpha character [a-zA-Z]
• one numeric character [0-9]
• one character that is not alpha or numeric, such as ! # @ $ % ^ & * ( ) - _ = + [ ] ; : ' " , < . > / ?

The password must not:

• contain spaces
• begin with an exclamation [!] or a question mark [?]

这是代码

public static void main(String[] args) {

    //declare variables
    String inputPassword;       // variable for password
    String confirmPassword;

    // set up input stream from the keyboard
    Scanner input = new Scanner (System.in);

    // ask for password
    System.out.print("Password : ");
    inputPassword = input.next();
    passCheck(inputPassword);

    System.out.print("Please confirm your password : ");
    confirmPassword = input.next();


    if(inputPassword.matches(confirmPassword)){
        System.out.println("Password successfully created.");
    } else {
        System.out.println("Passwords do not match.");
    }


}

public static void passCheck(String password){
    boolean valid = true;
    if(password.length() < 8){
        System.out.println("Password is not eight characters long.");
        valid = false;
    }
    String upperCase = "(.*[A-Z].*)";
    if(!password.matches(upperCase)){
        System.out.println("Password must contain at least one capital letter.");
        valid = false;
    }
    String numbers = "(.*[0-9].*)";
    if(!password.matches(numbers)){
        System.out.println("Password must contain at least one number.");
        valid = false;
    }
    String specialChars = "(.*[ ! # @ $ % ^ & * ( ) - _ = + [ ] ; : ' \" , < . > / ?].*)";
    if(!password.matches(specialChars)){
        System.out.println("Password must contain at least one special character.");
        valid = false;
    }
    String space = "(.*[   ].*)";
    if(password.matches(space)){
        System.out.println("Password cannot contain a space.");
        valid = false;
    }
    if(password.startsWith("?")){
        System.out.println("Password cannot start with '?'.");
        valid = false;

    }
    if(password.startsWith("!")){
        System.out.println("Password cannot start with '!'.");
        valid = false;
    }
    if(valid){
        System.out.println("Password is valid.");
    }
}

我得到的是在它告诉我其中一个问题后，它会要求确认密码，这不是我想要的。

Answer 1

如果密码无效，用户无需重复密码

我对此的看法；

  System.out.print("Password : ");
    inputPassword = input.next();


   if(passCheck(inputPassword))
    {
    System.out.print("Please confirm your password : ");
    confirmPassword = input.next();


          if(inputPassword.matches(confirmPassword)){
           System.out.println("Password successfully created.");
          } else {
          System.out.println("Passwords do not match.");
           }
    }
    else {....}

......

编辑:我注意到你的方法 passCheck 的返回类型是 void。尝试将其更改为 boolean 值