XSD 架构:如何指定值中的位数? [英] XSD schema: How to specify the number of digits in a value?

问题描述

我想将元素中允许的位数限制为 6:

i want to limit the number of digits allowed in an element to 6:

<AccountNumber>123456</AccountNumber>
<AccountNumber>999999</AccountNumber>
<AccountNumber>000000</AccountNumber>

字段格式规范为 6 位、零填充、数字.

The field format specification is 6-digit, zero-padded, numeric.

我读到我可能想使用 totalDigits 限制，基于:

totalDigits 指定允许的确切位数.必须大于零

totalDigits Specifies the exact number of digits allowed. Must be greater than zero

所以我有简单的类型:

<xs:simpleType name="AccountNumber">
   <xs:restriction base="xs:int">
      <xs:totalDigits value="6"/>
   </xs:restriction>
</xs:simpleType>

当它捕获无效数字时，例如:

And while it catches invalid numbers, such as:

<AccountNumber>1234567</AccountNumber>
<AccountNumber>0000000</AccountNumber>
<AccountNumber></AccountNumber>

它不会捕获无效数字:

<AccountNumber>12345</AccountNumber>
<AccountNumber>01234</AccountNumber>
<AccountNumber>00123</AccountNumber>
<AccountNumber>00012</AccountNumber>
<AccountNumber>00001</AccountNumber>
<AccountNumber>00000</AccountNumber>
<AccountNumber>0000</AccountNumber>
<AccountNumber>000</AccountNumber>
<AccountNumber>00</AccountNumber>
<AccountNumber>0</AccountNumber>

指定允许的确切位数的建议限制是什么?

What is a suggested restriction to specify the exact number of digits allowed?

推荐答案

您需要使用 xs:pattern 并提供正则表达式以将其限制为数字.

You need to use xs:pattern and provide a regular expression to limit it to a number.

<xs:simpleType name="AccountNumber">
   <xs:restriction base="xs:int">
      <xs:pattern value="\d{6}"/>
   </xs:restriction>
</xs:simpleType>

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