问题
I have a schema for which JAXB is able to generate java classes perfectly every time. I am trying to get hyperjaxb to process the same schema. Towards that end, I downloaded and unzipped the hyperjaxb maven project from this link and then navigated to the root directory using cmd.exe
and tested it with the sample data by running mvn clean install to make sure that it works with the example schema. I then replaced the schema.xsd, po.xml, and bindings.xjb files with the full shema that works perfectly in JAXB, including a number of imported namespaces. I then ran mvn clean install again. However, I am getting the following error message:
[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"?
In the sample, the schema tag at the top of schema.xsd is:
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="1.0">
By contrast, my custom schema uses:
<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">
Note the xmlns="urn:some-org:v3" in the schema tag in my custom schema. It does not include a qualifier like xmlns:somequalifier="urn:some-org:v3". Is this causing the problem? It works perfectly in JAXB without the qualifier. It would be a major pain to go through the entire namespace and add a qualifier in front of every type.
Alternatively, it may be that the structures defined in the pom.xml for the sample project (in the zip file linked above) are causing the problem. They are different than the basic JAXB tools.
How can I avoid this problem? Perferably without adding a qualifier to every type. There are several thousand lines in my schema.
The following lines of the stack trace might shed light:
[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)
回答1:
The error that you see is due to missing the prefix on tag <property name="xsid"/>. The correct tag is below
<jaxb:bindings node="//xs:complexType[@name='Section']/xs:attribute[@name='ID']">
<jaxb:property name="xsid"/>
</jaxb:bindings>
Anyway your XSDs have some problem because by maven-jaxb2-plugin is possible to generates all classes and maven-hyperjaxb3-plugin is not possible.
I suggest a work around for your entire problem. If you don't needed to mark as @Entity or @Table all class that you generated, you could use below configuration.
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 Plugin
<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't a best practices but works fine.
来源：https://stackoverflow.com/questions/26413793/unsupported-binding-namespace