我尝试使用 XSD 文件验证我的 XML 文件，但收到以下错误消息:

[Error]: cvc-complex-type.2.3: Element 'paragraph' cannot have character [children], because the type's content type is element-only

这(如果我理解正确的话)意味着复杂类型不能将简单类型元素和复杂类型元素的组合作为子元素。

但是我该如何解决这个问题呢？我对此还是有点陌生​​，所以解决方案可能很简单？

我的代码如下所示:

XSD:

<?xml version="1.0" encoding="UTF-8"?>
   <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
         <xs:element name="biography">
               <xs:complexType>
                     <xs:sequence>
                           <xs:element name="paragraph" maxOccurs="unbounded">
                                 <xs:complexType>
                                       <xs:sequence>
                                             <xs:element name="name">
                                                   <xs:complexType>
                                                         <xs:sequence>
                                                               <xs:element name="first_name" type="xs:string" minOccurs="0"></xs:element>
                                                               <xs:element name="last_name" type="xs:string"></xs:element>
                                                         </xs:sequence>
                                                   </xs:complexType>
                                             </xs:element>
                                             <xs:element name="emphasize" maxOccurs="unbounded" minOccurs="0" type="xs:string"></xs:element>
                                             <xs:element name="profession" maxOccurs="unbounded" minOccurs="0" type="xs:string"></xs:element>
                                             <xs:element name="date" minOccurs="0">
                                                   <xs:complexType>
                                                         <xs:sequence>
                                                               <xs:element name="month" type="xs:string"></xs:element>
                                                               <xs:element name="day" type="xs:int"></xs:element>
                                                               <xs:element name="year" type="xs:int"></xs:element>
                                                         </xs:sequence>
                                                   </xs:complexType>
                                             </xs:element>
                                       </xs:sequence>
                                 </xs:complexType>
                           </xs:element>
                           <xs:element name="definition" maxOccurs="unbounded">
                                 <xs:complexType>
                                       <xs:sequence>
                                             <xs:element name="term" type="xs:string"></xs:element>
                                       </xs:sequence>
                                 </xs:complexType>
                           </xs:element>
                     </xs:sequence>
               </xs:complexType>
         </xs:element>
   </xs:schema>

XML:

<biography>
 <paragraph>
  <name><first_name>Alex</first_name> <last_name>Turing</last_name></name>
  was one of the first people to truly deserve the name <emphasize>computer
  scientist</emphasize>. Although his contributions to the fields are too
  numerous to lst, his best-known are the famous <emphasize>Turing
  Test</emphasize> and <emphasize>Turing Machine</emphasize>.
 </paragraph>

 <definition>The <term>Turing Test</term> is to this day the standard test
  for determining whether a computer is truly intelligent. This test yet
  has to be passed.</definition>

 <definition>A <term>Turing Machine</term> is an abstract finite state
 automaton with infinite memory that can be proven equivalent to any other
 finite state automaton with arbitrarily large memory. Thus what is true
 for one Turing machine is true for all Turing machines no matter how
 implemented.</definition>

 <paragraph>
  <name><last_name>Turing</last_name></name> was also an accomplished
  <profession>mathematician</profession> and
  <profession>cryptographer</profession>. His assistance was crucial in
  helping the Allies decode the German Enigma cipher. He committed suicide
  on <date><month>June</month> <day>7</day>, <year>1954</year></date>
  after being convicted of homosexuality and forced to take female hormone
  injections.
  </paragraph>
</biography>

最佳答案

这正是混合内容的目的:

    <xs:element name="paragraph" maxOccurs="unbounded">
      <xs:complexType mixed="true">

和:

    <xs:element name="definition" maxOccurs="unbounded">
      <xs:complexType mixed="true">

请注意，您可能还希望 paragraph 和 definition 位于 xs:choice macOccurs="unbounded" 给定的 XML 中。

这是您的 XSD，其中包含所有需要的更改，以便您的 XML 有效:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="biography">
    <xs:complexType>
      <xs:choice maxOccurs="unbounded">
        <xs:element name="paragraph">
          <xs:complexType mixed="true">
            <xs:sequence>
              <xs:element name="name">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element name="first_name" type="xs:string" minOccurs="0"></xs:element>
                    <xs:element name="last_name" type="xs:string"></xs:element>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
              <xs:element name="emphasize" maxOccurs="unbounded" minOccurs="0" type="xs:string"></xs:element>
              <xs:element name="profession" maxOccurs="unbounded" minOccurs="0" type="xs:string"></xs:element>
              <xs:element name="date" minOccurs="0">
                <xs:complexType mixed="true">
                  <xs:sequence>
                    <xs:element name="month" type="xs:string"></xs:element>
                    <xs:element name="day" type="xs:int"></xs:element>
                    <xs:element name="year" type="xs:int"></xs:element>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element name="definition">
          <xs:complexType mixed="true">
            <xs:sequence>
              <xs:element name="term" type="xs:string"></xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>
</xs:schema>

关于xml - 元素不能有字符 [children]，因为该类型的内容类型是仅限元素的，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34493270/