不支持的绑定名称空间“”

时间：2014-10-16 20:59:34

标签： xml maven jaxb xsd hyperjaxb

我有一个架构，JAXB每次都能完美地生成java类。我试图让hyperjaxb处理相同的架构。为此，我下载并解压缩了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对样本数据进行测试，以确保它与示例模式一起使用。然后，我使用在schema.xsd中完美运行的完整shema替换了po.xml，bindings.xjb和JAXB文件，包括许多导入的命名空间。然后我又跑了mvn clean install。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顶部的架构标记为：

<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">

请注意我的自定义架构中架构标记中的xmlns="urn:some-org:v3"。它不包含xmlns:somequalifier="urn:some-org:v3"之类的限定符。这会导致问题吗？它在没有限定符的情况下在JAXB中完美运行。遍历整个命名空间并在每种类型前面添加限定符将是一个巨大的痛苦。

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。它们与基本的JAXB工具不同。

如何避免此问题？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消失：

[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)

1 个答案:

答案 0 :(得分：3)

您看到的错误是由于错过了标记<property name="xsid"/>上的前缀。正确的标签位于

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

无论如何，您的XSD存在一些问题，因为maven-jaxb2-plugin可以生成所有类，并且maven-hyperjaxb3-plugin是不可能的。

我建议您解决整个问题。如果您不需要将所生成的所有类标记为@Entity或@Table，则可以使用以下配置。

<强> XJB 

<?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>

Ain是最佳实践，但工作正常。

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