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xml - 不支持的绑定(bind)命名空间 ""

转载 作者：行者123 更新时间：2023-12-04 01:38:20 25 4
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我有一个架构，JAXB每次都能完美地生成java类。我正在尝试获取 hyperjaxb处理相同的模式。为此，我下载并解压了 hyperjaxb maven项目from this link然后使用 cmd.exe 导航到根目录
并通过运行 mvn clean install 使用样本数据对其进行测试以确保它适用于示例架构。然后我替换了 schema.xsd , po.xml , 和 bindings.xjb在 JAXB 中完美运行的具有完整 shema 的文件，包括许多导入的命名空间。然后我跑了mvn clean install再次。但是，我收到以下错误消息:

[ERROR] Error while parsing schema(s).Location [ file:/C:/path/to/src/main/resources/schema.xsd{4,32}].
org.xml.sax.SAXParseException; systemId: file:/C:/path/to/src/main/resources/schema.xsd; 
lineNumber: 4; columnNumber: 32; Unsupported binding namespace "". 
Perhaps you meant "http://annox.dev.java.net"?

在示例中，schema.xsd 顶部的模式标记是: 
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="1.0">

相比之下，我的自定义架构使用: 
<xs:schema targetNamespace="urn:some-org:v3" xmlns:mif="urn:some-org:v3/mif" xmlns="urn:some-org:v3"
    xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
    xmlns:sdtc="urn:some-org:sdtc" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="1.0">

注意 xmlns="urn:some-org:v3"在我的自定义架构中的架构标记中。它不包括像 xmlns:somequalifier="urn:some-org:v3" 这样的限定符。 .这是造成问题的原因吗？它在没有限定符的 JAXB 中完美运行。遍历整个命名空间并在每种类型前面添加一个限定符将是一个很大的痛苦。

或者，可能是示例项目的 pom.xml 中定义的结构(在上面链接的 zip 文件中)导致了问题。它们不同于基本的 JAXB 工具。

我怎样才能避免这个问题？ 最好不要为每种类型添加限定符。我的架构中有几千行。

堆栈跟踪的以下行可能会有所帮助: 
[ERROR] Error while parsing schema(s).Location [ file:/C:/path/to/src/main/resources/schema.xsd{4,32}].
org.xml.sax.SAXParseException; systemId: file:/C:/path/to/src/main/resources/schema.xsd; lineNumber: 4; columnNumber: 32; Unsupported binding namespace "". Perhaps you meant "http://annox.dev.java.net"?
    at com.sun.tools.xjc.reader.AbstractExtensionBindingChecker.error(AbstractExtensionBindingChecker.java:213)
    at com.sun.tools.xjc.reader.AbstractExtensionBindingChecker.checkAndEnable(AbstractExtensionBindingChecker.java:115)
    at com.sun.tools.xjc.reader.ExtensionBindingChecker.startElement(ExtensionBindingChecker.java:133)
    at org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:551)
    at com.sun.tools.xjc.reader.xmlschema.parser.IncorrectNamespaceURIChecker.startElement(IncorrectNamespaceURIChecker.java:128)
    at org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:551)
    at com.sun.tools.xjc.reader.xmlschema.parser.CustomizationContextChecker.startElement(CustomizationContextChecker.java:193)
    at org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:551)
    at com.sun.tools.xjc.reader.internalizer.DOMForestScanner$LocationResolver.startElement(DOMForestScanner.java:147)
    at com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:244)
    at com.sun.xml.bind.unmarshaller.DOMScanner.scan(DOMScanner.java:127)
    at com.sun.tools.xjc.reader.internalizer.DOMForestScanner.scan(DOMForestScanner.java:92)
    at com.sun.tools.xjc.reader.internalizer.DOMForestScanner.scan(DOMForestScanner.java:100)
    at com.sun.tools.xjc.reader.internalizer.DOMForestParser.parse(DOMForestParser.java:104)
    at com.sun.tools.xjc.ModelLoader$XMLSchemaParser.parse(ModelLoader.java:269)
    at com.sun.xml.xsom.impl.parser.NGCCRuntimeEx.parseEntity(NGCCRuntimeEx.java:347)
    at com.sun.xml.xsom.impl.parser.ParserContext.parse(ParserContext.java:128)
    at com.sun.xml.xsom.parser.XSOMParser.parse(XSOMParser.java:168)
    at com.sun.xml.xsom.parser.XSOMParser.parse(XSOMParser.java:157)
    at com.sun.tools.xjc.ModelLoader.createXSOM(ModelLoader.java:534)
    at com.sun.tools.xjc.ModelLoader.loadXMLSchema(ModelLoader.java:378)
    at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:174)
    at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:119)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.loadModel(XJC22Mojo.java:50)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.doExecute(XJC22Mojo.java:40)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.doExecute(XJC22Mojo.java:28)
    at org.jvnet.jaxb2.maven2.RawXJC2Mojo.doExecute(RawXJC2Mojo.java:318)
    at org.jvnet.jaxb2.maven2.RawXJC2Mojo.execute(RawXJC2Mojo.java:161)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)

最佳答案

您看到的错误是由于缺少标签上的前缀 <property name="xsid"/> .正确的标签如下

<jaxb:bindings node="//xs:complexType[@name='Section']/xs:attribute[@name='ID']">
    <jaxb:property name="xsid"/>
</jaxb:bindings>

无论如何，您的 XSD 有一些问题，因为 maven-jaxb2-plugin可以生成所有类和 maven-hyperjaxb3-plugin不可能。

我建议解决您的整个问题。如果您不需要将生成的所有类标记为@Entity 或@Table，则可以使用以下配置。

许家宝 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<jaxb:bindings
    version="2.1"
    xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:annox="http://annox.dev.java.net"  >

    <jaxb:bindings schemaLocation="schema.xsd" node="/xs:schema">
        <jaxb:globalBindings generateIsSetMethod="true"/>
        <jaxb:schemaBindings>
            <jaxb:package name="org.jvnet.hyperjaxb3.ejb.tests.pocustomized"/>
        </jaxb:schemaBindings>
        <jaxb:bindings node="//xs:complexType[@name='InfrastructureRoot.typeId']">
            <annox:annotate>
                <annox:annotate annox:class="javax.persistence.Entity">
                </annox:annotate>
                <annox:annotate annox:class="javax.persistence.Table" name="typeId">
                </annox:annotate>
            </annox:annotate>
        </jaxb:bindings>
        <jaxb:bindings node="//xs:complexType[@name='ObservationMedia']/xs:attribute[@name='ID']">
            <jaxb:property name="xsid"/>
        </jaxb:bindings>
        <jaxb:bindings node="//xs:complexType[@name='RegionOfInterest']/xs:attribute[@name='ID']">
            <jaxb:property name="xsid"/>
        </jaxb:bindings>
        <jaxb:bindings node="//xs:complexType[@name='Section']/xs:attribute[@name='ID']">
            <jaxb:property name="xsid"/>
        </jaxb:bindings>


    </jaxb:bindings>

</jaxb:bindings>

Maven 插件 
<plugin>
    <groupId>org.jvnet.jaxb2.maven2</groupId>
    <artifactId>maven-jaxb2-plugin</artifactId>
    <version>0.8.1</version>
    <executions>
        <execution>
            <phase>generate-sources</phase>
            <goals>
                <goal>generate</goal>
            </goals>
        </execution>
    </executions>
    <dependencies>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>
    </dependencies>
    <configuration>
        <args>
            <arg>-Xannotate</arg>
            <arg>-nv</arg>
        </args>
        <extension>true</extension>
        <schemaDirectory>src/main/resources/</schemaDirectory>
        <schemaIncludes>
            <schemaInclude>schema.xsd</schemaInclude>
        </schemaIncludes>
        <bindingDirectory>src/main/resources/</bindingDirectory>
        <bindingIncludes>
            <include>*.xjb</include>
        </bindingIncludes>
        <debug>true</debug>
        <verbose>true</verbose>
        <episode>true</episode>
        <forceRegenerate>true</forceRegenerate>
        <plugins>
            <plugin>
                <groupId>org.jvnet.jaxb2_commons</groupId>
                <artifactId>jaxb2-basics</artifactId>
                <version>0.6.3</version>
            </plugin>
            <plugin>
                <groupId>org.jvnet.jaxb2_commons</groupId>
                <artifactId>jaxb2-basics-annotate</artifactId>
                <version>0.6.3</version>
            </plugin>
        </plugins>
    </configuration>
</plugin>

不是最佳实践，但工作正常。

关于xml - 不支持的绑定(bind)命名空间 ""，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26413793/

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