我有以下工作正常的架构:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="bindings">
<xs:complexType>
<xs:sequence maxOccurs="unbounded">
<xs:element name="bind">
<xs:complexType>
<xs:attribute name="trigger" use="required">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute> <!-- trigger -->
<xs:attribute name="command" use="required">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute> <!-- command -->
</xs:complexType>
</xs:element> <!-- bind -->
</xs:sequence>
</xs:complexType>
</xs:element> <!-- bindings -->
</xs:schema>
但是,当我尝试为顶级bindings
元素定义属性时,无论我将属性代码放在何处,都会出现错误。我错过了什么或做错了什么?
编辑:看起来我的 Java XML 代码或 Xerces 有一些问题。如果我更改 XSD 为顶级元素提供可选的“父”属性,Xerves 会给我错误"Problem: schema_reference.4: Failed to read schema document 'null', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>."
但是,如果我给属性任何名称 //other// 而不是“父”,它会报告Attribute 'parent' is not allowed to appear in element 'bindings'.
,就像你一样d 期望。
我关于 XSD 和 Xerces 的 Java 代码是:
bindingsDocumentBuilderFactory =
DocumentBuilderFactory.newInstance();
DocumentBuilderFactory bdbf = bindingsDocumentBuilderFactory;
bdbf.setValidating(true);
// I get the input stream here as "is"
bdbf.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage",
"http://www.w3.org/2001/XMLSchema");
bdbf.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaSource", is);
编辑 2:
正在验证的 XML 文件:
<bindings parent="game/movement">
<bind trigger="i" command="INVENTORY"/>
</bindings>