验证路由号码

Question

如何在java中验证银行路由号码？谁能帮我吗。例如

void boolean validate(String str){

  // some code
  return true;     //if valid otherwise return false
}

Answer 1

我得到了解决方案。银行路由号码使用这种简单的方法进行验证。

public boolean validateRoutingNumber(String s) {

    int checksum=0, len=0, sum=0, mod = 0;
    len = s.length();

    if(len != 9){
        return false;
    }else {
        String newString = s.substring(s.length()-1);
        checksum = Integer.parseInt(newString);

        sum = (7*(Integer.parseInt(""+s.charAt(0))+Integer.parseInt(""+s.charAt(3))+ Integer.parseInt(""+s.charAt(6)))) +
                (3*(Integer.parseInt(""+s.charAt(1))+Integer.parseInt(""+s.charAt(4))+ Integer.parseInt(""+s.charAt(7))))+
             (9*(Integer.parseInt(""+s.charAt(2))+Integer.parseInt(""+s.charAt(5))));


        mod = sum % 10;

        if(mod == checksum)
            return true;
        else
            return false;

    }
}

Answer 2

为了好玩，我写了一个Angular js指令来做同样的事情：

angular.module('ldPortal.directives')

.directive('routingnumber', function(){
    return {
      // only use as an attribute
      restrict: 'A',
      require: 'ngModel',
      link: function(scope, elem, attr, ctrl){

        var regex = new RegExp('^[0-9]{9}$','');
        var num_at = function(str, index){
          try {
            return parseInt(str.charAt(index))
          }catch (execption){
            console.write(execption);
          }
        };

        var validate = function(value){
          if(! (value)){
            return false;
          }
          var strVal = value.toString();
          if (!regex.test(strVal)){
            return false;
          }
          var checksum = parseInt(strVal.substr(strVal.length-1));
          var sum = 0;
          sum += 7 * (num_at(strVal, 0)+num_at(strVal, 3)+num_at(strVal,6));
          sum += 3 * (num_at(strVal, 1)+num_at(strVal, 4)+num_at(strVal, 7));
          sum += 9 * (num_at(strVal, 2)+num_at(strVal, 5));

          var mod = sum % 10;
          return checksum == mod;
        };


        ctrl.$parsers.push(function(value){
          var is_valid = validate(value);
          ctrl.$setValidity('routingnumber', is_valid);
          return is_valid ? value : undefined;
        });

        ctrl.$formatters.push(function(value){
          var is_valid = validate(value);
          ctrl.$setValidity('routingnumber', is_valid);
          return value;
        });
      }
    };
  });

Answer 3

这是python：

  def validate_routing_number(routing_number):
     # quick easy validations
     if routing_number is None or routing_number == '':
         return False
    invalid_routing_message = 'invalid routing number'
    if not re.match(r'^[0-9]{9}$', routing_number):
        return False

    # here is the more complicated validation!
    checksum = int(routing_number[-1])  # last digit
    sum = 0  # http://en.wikipedia.org/wiki/Routing_transit_number
    sum += 7 * (int(routing_number[0])+int(routing_number[3])+int(routing_number[6]))
    sum += 3 * (int(routing_number[1])+int(routing_number[4])+int(routing_number[7]))
    sum += 9 * (int(routing_number[2])+int(routing_number[5]))

    mod = sum % 10
    return checksum != mod

Answer 4

我创建了一个简单的路由验证器，希望这个工作。

RoutingNumberValidator：import static java.lang.Character.getNumericValue;

public static class RoutingNumberValidator {
    public boolean isValid(String value) {
      boolean isValid = value != null && value.matches("[0-9]{9}");
      if (isValid) {
        int check = 0;
        for ( int index = 0; index < 3; index++ ) {
          int pos = index * 3;
          check += getNumericValue(value.charAt(pos)) * 3;
          check += getNumericValue(value.charAt(pos + 1)) * 7;
          check += getNumericValue(value.charAt(pos + 2));
        }
        isValid = check != 0 && check % 10 == 0;
      }
      return isValid;
    }
}

路由号码验证器测试：

public class RoutingNumberValidatorTest {
    private List<String> validRoutingNumbers = Arrays.asList("122105155", "082000549");
    private List<String> invalidRoutingNumbers =  Arrays.asList("1232101155", "032000549");
    @Test
    public void isValid() throws Exception {
        RoutingNumberValidator routingNumberValidator = new RoutingNumberValidator();
        validRoutingNumbers.forEach(it-> assertThat(routingNumberValidator.isValid(it)).as("Invalid Routing Number should not be valid %s", it).isTrue());
        invalidRoutingNumbers.forEach(it-> assertThat(routingNumberValidator.isValid(it)).as("Invalid Routing Number should not be valid %s", it).isFalse());
    }
}

Answer 5

    package RoutingNumberAlgo;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int checksum = 0, len = 0, sum = 0, mod = 0, rem = 0;
        Scanner ss = new Scanner(System.in);
        System.out.print("Enter the Routing Number: ");
        String s = ss.nextLine();
        len = s.length();
        if (len != 9) {
            System.out.print("Length not 9");
        } else {
            String newString = s.substring(s.length() - 1);
            checksum = Integer.parseInt(newString);
            sum = (3 * (Integer.parseInt("" + s.charAt(0)))) + (7 * (Integer.parseInt("" + s.charAt(1))))
                    + (1 * (Integer.parseInt("" + s.charAt(2)))) + (3 * (Integer.parseInt("" + s.charAt(3))))
                    + (7 * (Integer.parseInt("" + s.charAt(4)))) + (1 * (Integer.parseInt("" + s.charAt(5))))
                    + (3 * (Integer.parseInt("" + s.charAt(6)))) + (7 * (Integer.parseInt("" + s.charAt(7))));
            mod = 10 - (sum % 10);
            if (mod == checksum)
                System.out.print("True");
            else
                System.out.print("False");
            ;

        }

    }
}