Invalid content was found starting with element ошибка

I’m using Java’s JAXB parser to marshal and unmarshal XML files to a specific class. The unmarshaling works fine, however, it chokes on marshaling a file with the following error:

cvc-complex-type.2.4.a: Invalid content was found starting with element ‘DataPath’. One of ‘{«http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd»:DataPath}’ is expected.

I don’t understand why this wouldn’t work, cause unmarshaling a file works fine.

As requested, here is a MCVE:

ProjectRepository.java:

package com.flyingwhales;

import org.xml.sax.SAXException;

import javax.xml.XMLConstants;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import java.io.File;
import java.io.IOException;

/**
 * Created by Jesse on 11/13/2016.
 */

public final class ProjectRepository {
    private static Validator validator;
    private static Marshaller marshaller;
    private static Unmarshaller unmarshaller;

    // This class is not meant to be instantiated.
    private ProjectRepository() {}

    static {
        File schemaFile = new File("project.xsd");
        SchemaFactory schemaFactory = SchemaFactory
                .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

        try {
            Schema schema = schemaFactory.newSchema(schemaFile);
            validator = schema.newValidator();

            // Initialize JAXB stuff too.
            JAXBContext jaxbContext = JAXBContext.newInstance(Project.class);
            marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            marshaller.setSchema(schema);
            unmarshaller = jaxbContext.createUnmarshaller();
        } catch (SAXException | JAXBException e) {
            e.printStackTrace();
        }
    }

    public static Project load(File file) throws Exception {
        if (!validate(file)) {
            throw new Exception("project file contains invalid markup");
        }

        Project project = (Project)unmarshaller.unmarshal(file);
        project.setProjectFile(file);

        return project;
    }

    public static void save(Project project, File path) throws JAXBException {
        marshaller.marshal(project, path);
    }

    public static boolean validate(File file) throws IOException {
        Source source = new StreamSource(file);

        try {
            validator.validate(source);
        } catch (SAXException e) {
            return false;
        }

        return true;
    }
}

Project.java

package com.flyingwhales;

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import java.io.File;

@XmlRootElement(name = "Project")
public class Project {
    private String name = "Project";
    private String type = "Standalone";
    private String dataPath = "Data";
    private String scriptPath = "Data/Scripts";
    private String artPath = "Art";
    private String sfxPath = "Sound/SFX";
    private String bgmPath = "Sound/BGM";

    private File projectFile;

    public Project() { }

    public Project(File file) {
        setProjectFile(file);
    }

    @XmlAttribute( name = "name" )
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @XmlAttribute (name = "type" )
    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    @XmlElement(name = "DataPath")
    public String getDataPath() {
        return dataPath;
    }

    public void setDataPath(String dataPath) {
        this.dataPath = dataPath;
    }

    @XmlElement (name = "ScriptPath")
    public String getScriptPath() {
        return scriptPath;
    }

    public void setScriptPath(String scriptPath) {
        this.scriptPath = scriptPath;
    }

    @XmlElement (name = "ArtPath")
    public String getArtPath() {
        return artPath;
    }

    public void setArtPath(String artPath) {
        this.artPath = artPath;
    }

    @XmlElement (name = "SFXPath")
    public String getSfxPath() {
        return sfxPath;
    }

    public void setSfxPath(String sfxPath) {
        this.sfxPath = sfxPath;
    }

    @XmlElement (name = "BGMPath")
    public String getBgmPath() {
        return bgmPath;
    }

    public void setBgmPath(String bgmPath) {
        this.bgmPath = bgmPath;
    }

    void setProjectFile(File file) {
        projectFile = file;
    }

    public File getProjectFile() {
        return projectFile;
    }
}

package-info.java

@XmlSchema(namespace = "http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd")
package com.flyingwhales;

import javax.xml.bind.annotation.XmlSchema;

Main.java

    package com.flyingwhales;

import javax.xml.bind.JAXBException;
import java.io.File;

public class Main {
    public static void main(String[] args) {
        // Open and parse a file from the filesystem.
        try {
            Project loadedProject = ProjectRepository.load(new File("Test.cinnabar"));
            System.out.print("Loaded project: " + loadedProject.getName());
        } catch (Exception e) {
            e.printStackTrace();
        }

        // Try to create a project and save it to the hard drive.
        Project newProject = new Project(new File("New.cinnabar"));

        try {
            ProjectRepository.save(newProject, new File("New.cinnabar"));
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}

project.xsd

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           targetNamespace="http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd"
           xmlns="http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd"
           elementFormDefault="qualified">

    <xs:element name="Project">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="DataPath" type="xs:string" />
                <xs:element name="ScriptPath" type="xs:string" />
                <xs:element name="ArtPath" type="xs:string" />
                <xs:element name="SFXPath" type="xs:string" />
                <xs:element name="BGMPath" type="xs:string" />
            </xs:sequence>

            <xs:attribute name="name" type="xs:string" use="required" />
            <xs:attribute name="type" type="xs:string" use="required" />
        </xs:complexType>
    </xs:element>
</xs:schema>

Test.cinnabar

<?xml version="1.0" encoding="UTF-8"?>
<Project name="Test project" type="Standalone"
         xmlns="http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://hg.flyingwhales.nl/cinnabar/schemas/project.xsd">

    <DataPath>Data</DataPath>
    <ScriptPath>Data/Scripts</ScriptPath>
    <ArtPath>Art</ArtPath>
    <SFXPath>Sound/SFX</SFXPath>
    <BGMPath>Sound/BGM</BGMPath>
</Project>

Simply run the code and it will produce the error. Make sure project.xsd is in the working directory.

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Hi,

I am getting an error while parsing(unmarshallling) the xml using JAXB thru XSD validation.

Here is the xsd, that I am using for the validation followed by the xml sample and exception that I am getting.

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

	<xs:complexType name="process_variable_type">
	      <xs:sequence>
		<xs:element name="variable_name" type="xs:string"/>
		<xs:element name="label" type="xs:string"/>
		<xs:element name="value" type="xs:string"/>
		<xs:element name="previous_value" type="xs:string"/>
		<xs:element name="format" type="xs:string"/>
	      </xs:sequence>
	</xs:complexType>
	
	<xs:complexType name="text_field_type">
	  <xs:complexContent>
	    <xs:extension base="process_variable_type">
	    </xs:extension>
	  </xs:complexContent>
	</xs:complexType>
	
	<xs:complexType name="part_type">
	  <xs:sequence>
	   <xs:choice>
		<xs:element name="textFieldElement" type="text_field_type" /> 
	   </xs:choice>
	  </xs:sequence>
	  <xs:attribute name="name" type="xs:string" />
	</xs:complexType>
	
	<xs:element name="variable">
	  <xs:complexType>
	   <xs:sequence>
		<xs:element name="part" type="part_type" minOccurs="1" maxOccurs="1" /> 
	   </xs:sequence>
	  <xs:attribute name="dataIncluded" type="xs:string" />
	  <xs:attribute name="hasData" type="xs:string" />
	  <xs:attribute name="name" type="xs:string" />
	  <xs:attribute name="version" type="xs:string" />
	  </xs:complexType>
	</xs:element>
	
</xs:schema>

Sample XML:

<variable dataIncluded="yes" hasData="true" name="V1" version="25">
   <part name="textFieldElement">
      <textFieldElement xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/" xmlns:abx="http://www.activebpel.org/bpel/extension" xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/" xmlns:ext="http://www.activebpel.org/2.0/bpel/extension" xmlns:ns1="urn:ValueDisplayer" xmlns:ns2="urn:ValueProvider" xmlns:ns3="Invalid Document" xmlns:ns4="http://temp" xmlns:ns5="http://active-endpoints.com/services/order" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
         <variable_name>Variable1</variable_name>
         <label>Label2</label>
         <value>Value1</value>
         <previous_value>prevValue1</previous_value>
         <format>format1</format>
         <form_element_type>formElement1</form_element_type>
      </textFieldElement>
   </part>
</variable>

Error that I am getting is:

javax.xml.bind.UnmarshalException
 - with linked exception:
[org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'textFieldElement'. One of '{"":textFieldElement}' is expected.]
	at javax.xml.bind.helpers.AbstractUnmarshallerImpl.createUnmarshalException(AbstractUnmarshallerImpl.java:315)
	at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.createUnmarshalException(UnmarshallerImpl.java:476)
	at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:204)
	at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:173)
	at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:137)
	at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:194)
	at com.enfs.bpel.client.BpelClientUtility.unMarshal(BpelClientUtility.java:158)
	at com.enfs.bpel.client.BpelClientUtility.main(BpelClientUtility.java:140)
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'textFieldElement'. One of '{"":textFieldElement}' is expected.
	at com.sun.org.apache.xerces.internal.jaxp.validation.Util.toSAXParseException(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.validation.ErrorHandlerAdaptor.error(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.startElement(Unknown Source)
	at com.sun.xml.bind.v2.runtime.unmarshaller.ValidatingUnmarshaller.startElement(ValidatingUnmarshaller.java:67)
	at com.sun.xml.bind.v2.runtime.unmarshaller.SAXConnector.startElement(SAXConnector.java:117)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
	at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:200)
	... 5 more

If I remove the following attribute in the textFieldElement from the sample, then I am able to unmarshal it successfully.

xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"

But at the runtime, I cannot avoid this attribute in the XML message which I should unmarshal it.

Need help to resolve this.

..Thiruppathy.R

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Notice! This page describes the nature of the error using a hypothetical example and not the erroneous data of the input test file. You should however be able to apply this information to your error case.

General description of the error:

cvc-complex-type.2.4.a: Invalid content was found starting with element »{0}». One of »{1}» is expected.

Error description in schema standard: http://www.w3.org/TR/2007/WD-xmlsche…c-complex-type

Possible causes for this error:

• Element name is mistyped.
• Mandatory element is missing
• The end tag for an earlier element is missing
• Element not described in schema is trying to be used.
  • One reason for the above could be that not all of the expected elements are given. E.g. InitgPty/PstlAdr/Ctry is expected, instead InitgPty/Ctry is given
• Elements are in incorrect order.
• Namespace definitions declared either in the root tag or a parent element don’t match with the prefix (or no prefix) used in the element.

<House xmlns="http://house.ns" xmlns:car="http://car.ns">
    <Garage>
        <Car> <!-- This element is defined in the "car.ns" namespace. Therefore its name should be typed as "car:Car" -->
            <Brand>BMW</Brand> <!-- Same thing here -->
        </Car>
    </Garage>
</House>

<House xmlns="http://house.ns" xmlns:car="http://car.ns">
    <Garage>
        <car:Car>
            <car:Brand>BMW</car:Brand>
        </car:Car>
    </Garage>
</House>

<House xmlns="http://house.ns">
    <Garage>
        <Car xmlns="http://car.ns">
            <Brand>BMW</Brand>
        </Car>
    </Garage>
</House>