RESTEasy,is required JAXB to support XML file. In this tutorial,we show you how to create an “user” object,convert it into XML file,and return it back to the client.
1. RESTEasy + JAXB
To use JAXB in RESTEasy,you need to include the “resteasy-jaxb-provider.jar
” dependency.
File : pom.xml
<repositories>
<repository>
<id>JBoss repository</id>
<url>https://repository.jboss.org/nexus/content/groups/public-jboss/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>2.2.1.GA</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
<version>2.2.0.GA</version>
</dependency>
</dependencies>
2. JAXB XML Provider
Create an object,annotate with JAXB annotation to support XML file conversion.
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "user")
public class User {
String username;
String password;
int pin;
@XmlElement
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@XmlElement
public String getpassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@XmlAttribute
public int getPin() {
return pin;
}
public void setPin(int pin) {
this.pin = pin;
}
}
With JAXB annotation,above object will convert it into following XML format.
<user pin="value">
<password>value</password>
<username>value</username>
</user>
3. JAX-RS
To return a XML file,annotate the service method with @Produces("application/xml")
. RESTEasy will convert the JAXB annotated object into XML file,and return back to the client.
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
@Path("/xml/user")
public class XMLService {
@GET
@Path("/get")
@Produces("application/xml")
public User getUserInXML() {
User user = new User();
user.setUsername("mkyong");
user.setPassword("password");
user.setPin(123456);
return user;
}
}
3. Demo
When URI pattern “·/xml/user/get·” is requested,following XML file will be returned.
<user pin="123456">
<password>password</password>
<username>mkyong</username>
</user>
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