如何修复 Camel Jaxb unmasharlling 问题

Question

我创建了一个 xsd 并将其与 jaxb 插件一起使用，如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns="http://www.mycompany.fr/Canonical/Schema/invoices.xsd"
           targetNamespace="http://www.mycompany.fr/Canonical/Schema/invoices.xsd"
           elementFormDefault="qualified"
           attributeFormDefault="unqualified">

    <xs:element name="invoices">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="invoice" maxOccurs="unbounded" minOccurs="0">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element minOccurs="0" name="invoice-type" type="xs:string"/>
                            <xs:element minOccurs="0" name="insertion-date" type="xs:dateTime"/>
                            <xs:element minOccurs="0" name="amount" type="xs:double"/>
                        </xs:sequence>
                        <xs:attribute name="invoice-number" type="xs:string" use="required"/>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

插件：

<plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>jaxb2-maven-plugin</artifactId>
                <version>2.5.0</version>
                <executions>
                    <execution>
                        <id>xsd-to-java</id>
                        <goals>
                            <goal>xjc</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <packageName>com.mycompany.model</packageName>
                    <sources>
                        <source>src/main/resources/xsd/invoices.xsd</source>
                    </sources>
                </configuration>
            </plugin>

它让我产生了这个 class:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "invoice"
})
@XmlRootElement(name = "invoices")
public class Invoices {

    protected List<Invoice> invoice;

    /**
     * Gets the value of the invoice property.
     * 
     * <p>
     * This accessor method returns a reference to the live list,
     * not a snapshot. Therefore any modification you make to the
     * returned list will be present inside the JAXB object.
     * This is why there is not a <CODE>set</CODE> method for the invoice property.
     * 
     * <p>
     * For example, to add a new item, do as follows:
     * <pre>
     *    getInvoice().add(newItem);
     * </pre>
     * 
     * 
     * <p>
     * Objects of the following type(s) are allowed in the list
     * {@link Invoice }
     * 
     * 
     */
    public List<Invoice> getInvoice() {
        if (invoice == null) {
            invoice = new ArrayList<Invoice>();
        }
        return this.invoice;
    }


    /**
     * <p>Classe Java pour anonymous complex type.
     * 
     * <p>Le fragment de schéma suivant indique le contenu attendu figurant dans cette classe.
     * 
     * <pre>
     * &lt;complexType&gt;
     *   &lt;complexContent&gt;
     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"&gt;
     *       &lt;sequence&gt;
     *         &lt;element name="invoice-type" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
     *         &lt;element name="insertion-date" type="{http://www.w3.org/2001/XMLSchema}dateTime" minOccurs="0"/&gt;
     *         &lt;element name="amount" type="{http://www.w3.org/2001/XMLSchema}double" minOccurs="0"/&gt;
     *       &lt;/sequence&gt;
     *       &lt;attribute name="invoice-number" use="required" type="{http://www.w3.org/2001/XMLSchema}string" /&gt;
     *     &lt;/restriction&gt;
     *   &lt;/complexContent&gt;
     * &lt;/complexType&gt;
     * </pre>
     * 
     * 
     */
    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlType(name = "", propOrder = {
        "invoiceType",
        "insertionDate",
        "amount"
    })
    public static class Invoice {

        @XmlElement(name = "invoice-type")
        protected String invoiceType;
        @XmlElement(name = "insertion-date")
        @XmlSchemaType(name = "dateTime")
        protected XMLGregorianCalendar insertionDate;
        protected Double amount;
        @XmlAttribute(name = "invoice-number", required = true)
        protected String invoiceNumber;

        /**
         * Obtient la valeur de la propriété invoiceType.
         * 
         * @return
         *     possible object is
         *     {@link String }
         *     
         */
        public String getInvoiceType() {
            return invoiceType;
        }

        /**
         * Définit la valeur de la propriété invoiceType.
         * 
         * @param value
         *     allowed object is
         *     {@link String }
         *     
         */
        public void setInvoiceType(String value) {
            this.invoiceType = value;
        }

        /**
         * Obtient la valeur de la propriété insertionDate.
         * 
         * @return
         *     possible object is
         *     {@link XMLGregorianCalendar }
         *     
         */
        public XMLGregorianCalendar getInsertionDate() {
            return insertionDate;
        }

        /**
         * Définit la valeur de la propriété insertionDate.
         * 
         * @param value
         *     allowed object is
         *     {@link XMLGregorianCalendar }
         *     
         */
        public void setInsertionDate(XMLGregorianCalendar value) {
            this.insertionDate = value;
        }

        /**
         * Obtient la valeur de la propriété amount.
         * 
         * @return
         *     possible object is
         *     {@link Double }
         *     
         */
        public Double getAmount() {
            return amount;
        }

        /**
         * Définit la valeur de la propriété amount.
         * 
         * @param value
         *     allowed object is
         *     {@link Double }
         *     
         */
        public void setAmount(Double value) {
            this.amount = value;
        }

        /**
         * Obtient la valeur de la propriété invoiceNumber.
         * 
         * @return
         *     possible object is
         *     {@link String }
         *     
         */
        public String getInvoiceNumber() {
            return invoiceNumber;
        }

        /**
         * Définit la valeur de la propriété invoiceNumber.
         * 
         * @param value
         *     allowed object is
         *     {@link String }
         *     
         */
        public void setInvoiceNumber(String value) {
            this.invoiceNumber = value;
        }

    }

}

并且我使用了这条 Camel 路线来解压缩 xml:

    JaxbDataFormat jaxbDataFormat = new JaxbDataFormat();
        jaxbDataFormat.setSchema("classpath:xsd/invoices.xsd");
from("file:{{xml.location}}?delay=1000")
                .log("Reading invoice XML data from ${header.CamelFileName}")
                .unmarshal(jaxbDataFormat)
                .split(body())
            .to("direct:processedXml");

但是当我运行我的应用程序时，我收到以下错误...

[route2 ] [unmarshal1 ] [unmarshal[org.apache.camel.model.dataformat.JaxbDataFormat@7aff8796] ] [ 0]

Stacktrace --------------------------------------------------------------------------------------------------------------------------------------- : java.io.IOException: javax.xml.bind.UnmarshalException

with linked exception: [com.sun.istack.SAXParseException2; lineNumber: 2; columnNumber: 72; élément inattendu (URI : "http://www.mycompany.fr/Canonical/Schema/invoices.xsd", local : "invoices"). Les éléments attendus sont (none)] at org.apache.camel.converter.jaxb.JaxbDataFormat.unmarshal(JaxbDataFormat.java:312) at org.apache.camel.support.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:64) at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:471) at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:187) at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:64) at org.apache.camel.processor.Pipeline.process(Pipeline.java:184) at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:398) at org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:492) at org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:245) at org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:206) at org.apache.camel.support.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:202) at org.apache.camel.support.ScheduledPollConsumer.run(ScheduledPollConsumer.java:116) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829) Caused by: javax.xml.bind.UnmarshalException

请问你知道问题所在吗？

非常感谢和最诚挚的问候

Answer 1

当解组时，您不需要引用模式，而是引用 JAXB contextPath。您必须告诉 JAXB 在哪里（=在哪些包中）找到带注释的 pojo，以便它能够将 xml 转换为相应的 java 对象。

所以试试这个：

JaxbDataFormat jaxbDataFormat = new JaxbDataFormat();
jaxbDataFormat.setContextPath("com.mycompany.model");

如何修复 Camel Jaxb unmasharlling 问题

How to fix Camel Jaxb unmasharlling problem

jaxb

apache-camel

jaxb2-maven-plugin

quarkus