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Allow to provide custom configuration for JAXB context
==== Advanced JAXB-specific features
When using the `quarkus-resteasy-reactive-jaxb` extension there are some advanced features that RESTEasy Reactive supports.
===== Inject JAXB components
The JAXB resteasy reactive extension will serialize and unserialize requests and responses transparently for users. However, if you need finer usage of the JAXB components, you can inject either the JAXBContext, Marshaller, or Unmarshaller components into your beans:
[source,java]
----
@ApplicationScoped
public class MyService {
@Inject
JAXBContext jaxbContext;
@Inject
Marshaller marshaller;
@Inject
Unmarshaller unmarshaller;
// ...
}
----
[NOTE]
====
Quarkus will automatically register all the classes annotated with `@XmlRootElement` to the JAXB context.
====
===== Customize the JAXB configuration
To customize the JAXB configuration for either the JAXB context, and/or the Marshaller/Unmarshaller components, the suggested approach is to define a CDI bean of type `io.quarkus.jaxb.runtime.JaxbContextCustomizer`.
An example where a custom module needs to be registered would look like so:
[source,java]
----
@singleton
public class RegisterCustomModuleCustomizer implements JaxbContextCustomizer {
// For JAXB context configuration
@OverRide
public void customizeContextProperties(Map<String, Object> properties) {
}
// For Marshaller configuration
@OverRide
public void customizeMarshaller(Marshaller marshaller) throws PropertyException {
marshaller.setProperty("jaxb.formatted.output", Boolean.TRUE);
}
// For Unmarshaller configuration
@OverRide
public void customizeUnmarshaller(Unmarshaller unmarshaller) throws PropertyException {
// ...
}
}
----
[NOTE]
====
It's not necessary to implement the three methods, but only the want you need.
====
Alternatively, you can provide your own `JAXBContext` bean by doing:
[source,java]
----
public class CustomJaxbContext {
// Replaces the CDI producer for JAXBContext built into Quarkus
@singleton
JAXBContext jaxbContext() {
// ...
}
}
----
[IMPORTANT]
====
By replacing the JAXB context, you need to bound the classes to be serialized/unserialized and also configure the JAXB context accordingly.
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22
...xb/deployment/src/main/java/io/quarkus/jaxb/deployment/JaxbClassesToBeBoundBuildItem.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| package io.quarkus.jaxb.deployment; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Objects; | ||
|
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| import io.quarkus.builder.item.MultiBuildItem; | ||
|
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| /** | ||
| * List of classes to be bound in the JAXB context. | ||
| */ | ||
| public final class JaxbClassesToBeBoundBuildItem extends MultiBuildItem { | ||
|
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| private final List<String> classes; | ||
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| public JaxbClassesToBeBoundBuildItem(List<String> classes) { | ||
| this.classes = Objects.requireNonNull(classes); | ||
| } | ||
|
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| public List<String> getClasses() { | ||
| return classes; | ||
| } | ||
| } |
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15 changes: 15 additions & 0 deletions
15
...jaxb/deployment/src/test/java/io/quarkus/jaxb/deployment/CustomJaxbContextCustomizer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| package io.quarkus.jaxb.deployment; | ||
|
|
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| import javax.inject.Singleton; | ||
| import javax.xml.bind.Marshaller; | ||
| import javax.xml.bind.PropertyException; | ||
|
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| import io.quarkus.jaxb.runtime.JaxbContextCustomizer; | ||
|
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| @Singleton | ||
| public class CustomJaxbContextCustomizer implements JaxbContextCustomizer { | ||
| @Override | ||
| public void customizeMarshaller(Marshaller marshaller) throws PropertyException { | ||
| marshaller.setProperty("jaxb.formatted.output", Boolean.TRUE); | ||
| } | ||
| } |
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53
...sions/jaxb/deployment/src/test/java/io/quarkus/jaxb/deployment/InjectJaxbContextTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package io.quarkus.jaxb.deployment; | ||
|
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| import static org.junit.jupiter.api.Assertions.assertEquals; | ||
| import static org.junit.jupiter.api.Assertions.assertNotNull; | ||
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| import java.io.StringWriter; | ||
|
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| import javax.inject.Inject; | ||
| import javax.xml.bind.JAXBContext; | ||
| import javax.xml.bind.JAXBException; | ||
| import javax.xml.bind.Marshaller; | ||
| import javax.xml.bind.Unmarshaller; | ||
|
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| import org.junit.jupiter.api.Test; | ||
|
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| import io.quarkus.test.junit.QuarkusTest; | ||
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| @QuarkusTest | ||
| public class InjectJaxbContextTest { | ||
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| @Inject | ||
| JAXBContext jaxbContext; | ||
|
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| @Inject | ||
| Marshaller marshaller; | ||
|
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| @Inject | ||
| Unmarshaller unmarshaller; | ||
|
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| @Test | ||
| public void shouldInjectJaxbBeans() { | ||
| assertNotNull(jaxbContext); | ||
| assertNotNull(marshaller); | ||
| assertNotNull(unmarshaller); | ||
| } | ||
|
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| @Test | ||
| public void shouldPersonBeInTheJaxbContext() throws JAXBException { | ||
| Person person = new Person(); | ||
| person.setFirst("first"); | ||
| person.setLast("last"); | ||
|
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| StringWriter sw = new StringWriter(); | ||
| marshaller.marshal(person, sw); | ||
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| assertEquals("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n" | ||
| + "<person>\n" | ||
| + " <first>first</first>\n" | ||
| + " <last>last</last>\n" | ||
| + "</person>\n", sw.toString()); | ||
| } | ||
|
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| } |
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