xml - XSD 架构 : How to specify the number of digits in a value?

Question

我想将元素中允许的数字位数限制为 6:

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

字段格式规范为 6 位数字，零填充，数字。

i read that i might want to use totalDigits 限制，基于:

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>

同时它会捕获无效数字，例如:

<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？

Answer 1

您需要使用 xs:pattern并提供一个正则表达式以将其限制为一个数字。

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