XML模式和字符串類型的元素

Question

我想創建一個XML模式，我卡住了。看來我無法定義一個包含字符串內容的元素。我究竟做錯了什麼？

模式：

<?xml version="1.0"?> 
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://ponderka.wz.cz/MusicLibrary0" targetNamespace="http://ponderka.wz.cz/MusicLibrary0"> 
    <xs:element name="music-library"> 
     <xs:complexType> 
      <xs:sequence> 
       <xs:element name="artist" type="xs:string"/> 
      </xs:sequence> 
     </xs:complexType> 
    </xs:element> 
</xs:schema> 

文件：

<?xml version="1.0"?> 
<music-library xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://ponderka.wz.cz/MusicLibrary0 data0.xsd" xmlns="http://ponderka.wz.cz/MusicLibrary0"> 
    <artist>a</artist> 
</music-library> 

驗證器說：

Element <artist> is not allowed under element <music-library>. 
    Reason: The following elements are expected at this location (see below) 
     <artist> 
    Error location: music-library/artist 
    Details 
     cvc-model-group: Element <artist> unexpected by type '{anonymous}' of element <music-library>. 
     cvc-elt.5.2.1: The element <music-library> is not valid with respect to the actual type definition '{anonymous}'. 

Answer 1

你缺少這樣的：

attributeFormDefault="unqualified" 

試試這個：

<?xml version="1.0" encoding="utf-8"?> 
<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://ponderka.wz.cz/MusicLibrary0" xmlns:xs="http://www.w3.org/2001/XMLSchema"> 
    <xs:element name="music-library"> 
    <xs:complexType> 
     <xs:sequence> 
     <xs:element name="artist" type="xs:string" /> 
     </xs:sequence> 
    </xs:complexType> 
    </xs:element> 
</xs:schema>