javajaxbwsdlxjc

Getting The prefix "jxb" for element "jxb:bindings" is not bound exception after migrating to jaxb3/java21

While migrating a service to java21 and jaxb3.0, the class generation for xjb file from a wsdl is giving a 'org.xml.sax.SAXParseException; XXX The prefix "jxb" for element "jxb:bindings" is not bound.' Not sure if the problem is the file it self or the way the plugin is configured.

The final error for the maven build is: [ERROR] Failed to execute goal org.jvnet.jaxb:jaxb-maven-plugin:4.0.0:generate (WSDL) on project project-api: Unable to parse input schema(s). Error messages should have been provided. -> [Help 1]

The cause of the exception is the class generation by the plugin. Main exception: [ERROR] Error while parsing schema(s).Location [ file:/C:/project/project-api/src/main/resources/bindings/wsBinding.xjb{8,52}]. org.xml.sax.SAXParseException: The prefix "jxb" for element "jxb:bindings" is not bound. ... (long stacktrace)

following the exception: org.xml.sax.SAXParseException; systemId: file:/C:/project/project-api/src/main/resources/bindings/wsBinding.xjb; lineNumber: 8; columnNumber: 52; The prefix "jxb" for element "jxb:bindings" is not bound. ... (more stacktrace)

Here are the binding in question:

original bindings (jaxb2, java8):

<?xml version="1.0" encoding="UTF-8"?>
<jxb:bindings version="1.0"
              xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
              xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
              xmlns:xsd="http://www.w3.org/2001/XMLSchema"
              xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
              xmlns:annox="http://annox.dev.java.net"
              jxb:extensionBindingPrefixes="annox">

<jxb:globalBindings>
    <xjc:serializable uid="7702"/>
    <xjc:javaType adapter="com.cie.project.adapter.LocalDateAdapter" name="java.time.LocalDate"
                  xmlType="xsd:date"/>
</jxb:globalBindings>

   <jxb:bindings schemaLocation="../clients/wsBinding.wsdl" node="/wsdl:definitions/wsdl:types/xsd:schema">
    <jxb:bindings node="//xsd:complexType[@name='theRequest']">
        <jxb:class name="TheRequestType"/>
        <annox:annotateClass>@javax.xml.bind.annotation.XmlRootElement(name="theRequest")</annox:annotateClass>
      </jxb:bindings>

      <jxb:bindings node="//xsd:complexType[@name='theResponse']">
        <jxb:class name="TheResponseType"/>
        <annox:annotateClass>@javax.xml.bind.annotation.XmlRootElement(name="theResponse")</annox:annotateClass>
      </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>

new updated binding with the error (java21, jaxb3)

<?xml version="1.0" encoding="UTF-8"?>
<jxb:bindings version="1.0"
              xmlns:jaxb="https://jakarta.ee/xml/ns/jaxb"
              xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
              xmlns:xsd="http://www.w3.org/2001/XMLSchema"
              xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
              xmlns:annox="http://annox.dev.java.net"
              jxb:extensionBindingPrefixes="annox">

    <jxb:globalBindings>
        <xjc:serializable uid="7702"/>
        <xjc:javaType adapter="com.cie.project.adapter.LocalDateAdapter" name="java.time.LocalDate"
                      xmlType="xsd:date"/>
    </jxb:globalBindings>

    <jxb:bindings schemaLocation="../clients/wsBinding.wsdl" node="/wsdl:definitions/wsdl:types/xsd:schema">
        <jxb:bindings node="//xsd:complexType[@name='theRequest']">
            <jxb:class name="TheRequestType"/>
            <annox:annotateClass>@jakarta.xml.bind.annotation.XmlRootElement(name="theRequest")</annox:annotateClass>
        </jxb:bindings>

        <jxb:bindings node="//xsd:complexType[@name='theResponse']">
            <jxb:class name="TheResponseType"/>
            <annox:annotateClass>@jakarta.xml.bind.annotation.XmlRootElement(name="theResponse")</annox:annotateClass>
        </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>

Here the jaxbplugin config in maven if it could help

  <plugin>
      <groupId>org.jvnet.jaxb</groupId>
      <artifactId>jaxb-maven-plugin</artifactId>
    <executions>
      <execution>
        <id>WSDL</id>
        <goals>
          <goal>generate</goal>
        </goals>
      </execution>
    </executions>
    <configuration>
      <schemaLanguage>WSDL</schemaLanguage>
      <generatePackage>com.cie.project.ws</generatePackage>
      <schemaDirectory>${project.basedir}</schemaDirectory>
      <schemaIncludes>
        <include>src/main/resources/clients/*.wsdl</include>
      </schemaIncludes>
      <bindingDirectory>${project.basedir}</bindingDirectory>
      <bindingIncludes>
        <include>src/main/resources/bindings/*.xjb</include>
      </bindingIncludes>
      <verbose>true</verbose>
      <plugins>
        <plugin>
            <groupId>org.jvnet.jaxb</groupId>
            <artifactId>jaxb-plugins</artifactId>
        </plugin>
      </plugins>
    </configuration>
  </plugin>

Note sure if this is related I got a weird warning before these exception: org.xml.sax.SAXParseException: Are you trying to compile a WSDL ? Support for WSDL is experimental. You may enable it by using the -wsdl option.

EDIT: Answer:

The header for the binding file need to be updated from xmlns:jaxb to xmlns:jxb (from @Laurent Schoelens answer) and need to be version 3.

    <jxb:bindings version="3.0"
          xmlns:jxb="https://jakarta.ee/xml/ns/jaxb"
          xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
          xmlns:xsd="http://www.w3.org/2001/XMLSchema"
          xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
          xmlns:annox="urn:jaxb.jvnet.org:annox"
          jxb:extensionBindingPrefixes="annox">

Not sure if it related but the plugin needed to include the following plugin to work:

    <groupId>org.jvnet.jaxb</groupId>
    <artifactId>jaxb-basics-annotate</artifactId>
    <version>2.0.9</version>
Solution

  • Your binding has a simple error :

    <jxb:bindings version="3.0"
              xmlns:jaxb="https://jakarta.ee/xml/ns/jaxb"
              xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
              xmlns:xsd="http://www.w3.org/2001/XMLSchema"
              xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
              xmlns:annox="http://annox.dev.java.net"
              jxb:extensionBindingPrefixes="annox">

    You got jxb:bindings declaration but xmlns:jAxb as declared namespace.

    If you still want to use jxb, replace xmlns:jaxb with xmlns:jxb namespace prefix.

    And you can also replace the xmlns:annox="http://annox.dev.java.net" with the new annox namespace urn:jaxb.jvnet.org:annox (so with xmlns:annox="urn:jaxb.jvnet.org:annox"). See plugin's migration guide