Question

我有这个DTD：

<!DOCTYPE recipes [ <!ELEMENT recipes (Recipe+)> <!ELEMENT Recipe (Title,(Ingredients*|Preparation?),Comments?, Nutrition,Fat,Carbohydrates,Protein)> <!ELEMENT Title (#PCDATA)> <!ELEMENT Ingredients EMPTY> <!ATTLIST Ingredients name CDATA #REQUIRED amount CDATA #IMPLIED unit CDATA #IMPLIED> <!ELEMENT Preparation(steps,filling?,dough?,sauce?)> <!ELEMENT steps (#PCDATA)> <!ELEMENT filling (#PCDATA)> <!ELEMENT dough (#PCDATA)> <!ELEMENT sauce (#PCDATA)> <!ELEMENT Comments (#PCDATA)> <!ATTLIST Nutrition Calories CDATA #REQUIRED> <!ELEMENT Fat EMPTY> <!ATTLIST Fat fat CDATA #IMPLIED> <!ELEMENT Carbohydrates EMPTY> <!ATTLIST Carbohydrates carb CDATA #IMPLIED> <!ELEMENT Protein EMPTY> <!ATTLIST Protein prot CDATA #IMPLIED> ]>

我想将其转换为XSD，但我不明白如何为所有元素创建属性以及整个DTD到XSD的方式如何？提前致谢。

Answer 1

您的DTD没有为营养定义任何元素，但如果添加了这些元素，那么它看起来就像是XSD。

<?xml version="1.0" encoding="utf-8"?>
<!--Created with Liquid Studio 2017 - Developer Bundle Edition (Trial) 15.0.0.7084 (https://www.liquid-technologies.com)-->
<xs:schema elementFormDefault="qualified"
           xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="recipes">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="Recipe"
                    maxOccurs="unbounded" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="Recipe">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="Title" />
        <xs:choice>
          <xs:element ref="Ingredients"
                      minOccurs="0"
                      maxOccurs="unbounded" />
          <xs:element ref="Preparation"
                      minOccurs="0" />
        </xs:choice>
        <xs:element ref="Comments"
                    minOccurs="0" />
        <xs:element ref="Nutrition" />
        <xs:element ref="Fat" />
        <xs:element ref="Carbohydrates" />
        <xs:element ref="Protein" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="Title"
              type="xs:string" />
  <xs:element name="Ingredients">
    <xs:complexType>
      <xs:attribute name="name"
                    type="xs:string"
                    use="required" />
      <xs:attribute name="amount"
                    type="xs:string" />
      <xs:attribute name="unit"
                    type="xs:string" />
    </xs:complexType>
  </xs:element>
  <xs:element name="Preparation">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="steps" />
        <xs:element ref="filling"
                    minOccurs="0" />
        <xs:element ref="dough"
                    minOccurs="0" />
        <xs:element ref="sauce"
                    minOccurs="0" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="steps"
              type="xs:string" />
  <xs:element name="filling"
              type="xs:string" />
  <xs:element name="dough"
              type="xs:string" />
  <xs:element name="sauce"
              type="xs:string" />
  <xs:element name="Nutrition">
    <xs:complexType mixed="true">
      <xs:attribute name="Calories"
                    type="xs:string"
                    use="required" />
    </xs:complexType>
  </xs:element>
  <xs:element name="Comments"
              type="xs:string" />
  <xs:element name="Fat">
    <xs:complexType>
      <xs:attribute name="fat"
                    type="xs:string" />
    </xs:complexType>
  </xs:element>
  <xs:element name="Carbohydrates">
    <xs:complexType>
      <xs:attribute name="carb"
                    type="xs:string" />
    </xs:complexType>
  </xs:element>
  <xs:element name="Protein">
    <xs:complexType>
      <xs:attribute name="prot"
                    type="xs:string" />
    </xs:complexType>
  </xs:element>
</xs:schema>

DTD到XML架构

1 个答案: