XJC

Question

我遇到 xjc 的奇怪问题，试图映射 java 属性中的元素。我想在 Test2 getter 和 setter 上为 test3.

我设置了我的绑定：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<jaxb:bindings xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
    version="2.1">
    <jaxb:globalBindings localScoping="toplevel" underscoreBinding="asCharInWord">
    </jaxb:globalBindings>
    <jaxb:bindings schemaLocation="test.xsd">
        <jaxb:schemaBindings>
            <jaxb:package name="test.detail" />
        </jaxb:schemaBindings>
        <jaxb:bindings node="//xsd:element[@name='TEST']">
            <jaxb:class name="Test"></jaxb:class>
        </jaxb:bindings>
        <jaxb:bindings node="//xsd:element[@name='TEST1']">
            <jaxb:class name="Test1" />
        </jaxb:bindings>
        <jaxb:bindings node="//xsd:element[@name='TEST2']">
            <jaxb:class name="Test2Impl" />
        </jaxb:bindings>
        <jaxb:bindings node="//xsd:element[@name='TEST3']">
            <jaxb:property name="test3" />
        </jaxb:bindings>
    </jaxb:bindings>
</jaxb:bindings>

而我的 xsd 与此类似：

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="" elementFormDefault="qualified"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:jaxb="http://java.sun.com/xml/ns/jaxb">
    <xsd:element name="TEST1">
        <xsd:complexType mixed="true">
            <xsd:sequence>
                <xsd:element name="TEST2" maxOccurs="unbounded">
                    <xsd:complexType mixed="true">
                        <xsd:sequence>
                            <xsd:element name="TEST3" minOccurs="0" type="xsd:string" />
                        </xsd:sequence>
                    </xsd:complexType>
                </xsd:element>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
    <xsd:element name="TEST">
        <xsd:complexType mixed="true">
            <xsd:sequence>
                <xsd:element ref="TEST1" minOccurs="0" />
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
</xsd:schema>

当我尝试使用 xjc -b binding.xjb -d out test.xsd 生成时，我得到：

parsing a schema...
[WARNING] EmptyTargetNamespace: In schema document 'jaxb-generate-test/test.xsd',
the value of the 'targetNamespace' attribute cannot be an empty string.
  line 3 of jaxb-generate-test/test.xsd

[ERROR] compiler was unable to honor this property customization. 
It is attached to a wrong place, or its inconsistent with other bindings.
  line 20 of jaxb-generate-test/binding.xjb

[ERROR] (the above customization is attached to the following location in the schema)
  line 10 of jaxb-generate-test/test.xsd

Failed to parse a schema.

我创建了一个github project你可以测试。

Answer 1

首先，您需要修复 XSD 以便定义与 targetNamespace 关联并且元素引用正确。

尝试：

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://myns" elementFormDefault="qualified"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" xmlns:tns="http://myns">
    <xsd:element name="TEST1">
        <xsd:complexType mixed="true">
            <xsd:sequence>
                <xsd:element name="TEST2" maxOccurs="unbounded">
                    <xsd:complexType mixed="true">
                        <xsd:sequence>
                            <xsd:element name="TEST3" minOccurs="0" type="xsd:string" />
                        </xsd:sequence>
                    </xsd:complexType>
                </xsd:element>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
    <xsd:element name="TEST">
        <xsd:complexType mixed="true">
            <xsd:sequence>
                <xsd:element ref="tns:TEST1" minOccurs="0" />
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
</xsd:schema>

但是你还有一个更难的问题，那就是如何从其余的混合内容中挑选出带有 'test3' getter 的 TEST3 子元素。 JAXB 将把它们全部映射到一个列表中。

通过查看 this it looks like the JAXB2 Simplify plugin 等其他帖子可能会对您的用例有所帮助。

（也许有人会写出更好的答案，更详细地展示如何，但这可能对我有帮助，所以我按原样发布）。

XJC - [错误] 编译器无法接受此 属性 自定义

XJC - [ERROR] compiler was unable to honor this property customization

xml

xsd

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XJC - [错误] 编译器无法接受此属性自定义