SEVERE: MessageBodyWriter not found for media type=application/xml - jersey

Question

I know this may sound like a duplicate of this or some others, but bear with me.
I have a very basic JAX-RS resource, have added all the required annotations that I saw in this tutorial I followed here.
But I keep getting HTTP Status 500 and the following log output in Eclipse's console.
Mar 18, 2021 1:35:23 AM org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor aroundWriteTo
SEVERE: MessageBodyWriter not found for media type=application/xml, type=class com.varun.demorest.model.User, genericType=class com.varun.demorest.model.User.
Using Maven, but even after adding most suggestions I am finding on similar questions, I see that it was all mostly already included under
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.varun</groupId>
<artifactId>demorest</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>demorest</name>
<build>
<finalName>demorest</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<!-- use the following artifactId if you don't need servlet 2.x compatibility -->
<!-- artifactId>jersey-container-servlet</artifactId -->
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-moxy</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/jakarta.xml.bind/jakarta.xml.bind-api -->
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>3.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
<jersey.version>3.0.1</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
My Model class:
User.java:
package com.varun.demorest.model;
import jakarta.xml.bind.annotation.XmlRootElement;
#XmlRootElement
public class User {
private String name;
private String phone;
public User() {
}
public void setName(String name) {
this.name = name;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getName() {
return name;
}
public String getPhone() {
return phone;
}
}
CustomResource.java:
package com.varun.demorest;
import com.varun.demorest.model.User;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;
#Path("getUser")
public class CustomResource {
#GET
#Produces(MediaType.APPLICATION_XML)
public User getUser() {
System.out.println("getUser Called!");
User user = new User();
user.setName("Varun");
user.setPhone("xxxxxxxxxx");
System.out.println(user);
return user;
}
}
I am unexperienced in JAX-RS, so any help is much appreciated.
Using Java 11 and Tomcat 10.

Answer 1

as say #Paul Samsotha, it solve this problem for me, I append in pom.xml this:
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.2</version>
</dependency>
and it fix problem.

Answer 2

I am on JDK 17 and Tomcat 10, faced the same issue. Adding the following dependencies worked for me to enable JAXB without any error. (If you don't have any of these - some or the other error would come)
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>4.0.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.2</version>
</dependency>
<dependency>
<groupId>jakarta.activation</groupId>
<artifactId>jakarta.activation-api</artifactId>
<version>2.1.0</version>
</dependency>

Answer 3

I was following the same tutorial and having the same issue, I fixed it by adding the following dependencies:
` <dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>3.0.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.2</version>
</dependency>
`

Answer 4

I have used the jaxb-runtime and jersey-media-jaxb jars which fixed the error.
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>4.0.0-M4</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.4</version>
</dependency>

Answer 5

added #jakarta.xml.bind.annotation.XmlRootElement in pojo class.
and in pom.xml added below dependencies
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>4.0.0-M4</version>
</dependency>
this resolved issue.

Answer 6

was running a similar code in Eclipse 2022-03, ran into same error
fixed it with these three dependencies
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>3.0.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-jaxb</artifactId>
<version>3.0.2</version>
</dependency>
all before I was able to return Xml data,
I wonder why these works

Answer 7

Instead of using #XmlRootElement, use #jakarta.xml.bind.annotation.XmlRootElement
This is such a silly thing that solved my problem. This is so frustrating I spent hours solving this and this freaking small thing solved it. Please confirm if my answer helped you. Thanks.