Deploying a Jersey webapp on Jboss AS 7

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Currently running some webapps on Jboss AS 4/5 and I am testing migration to jboss7. When I try to deploy a jersey based webapp on JBoss AS 7 (full profile with standalone-preview config file), I get:

org.jboss.as.server.deployment.DeploymentUnitProcessingException: Only one JAX-RS Application Class allowed.

I've done a bit of hunting around on it and found that RestEasy is the default JAX-RS implementation embedded into Application Server. Posts like http://community.jboss.org/message/579996 and https://issues.jboss.org/browse/JBAS-8830) mention that the RestEasy deployer takes over.

In AS 6, it seems easier to remove the deployer whereas I have not seen any solutions for AS 7.

jboss7.x jersey jboss migration
10 Answers

Here is what worked for me for JBoss 7.1.1 and Jersey 1.17.1. No need to modify standalone.xml or domain.xml. Besides filtering restEasy in web.xml instruct Jersey to use Jackson. You can read about this configuration here.

To save time in configuration guesses, I am posting web.xml and pom.xml from test project.

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>TestJerseyonJBoss</display-name>
  <servlet>
    <servlet-name>Jersey REST Service</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <init-param>
      <param-name>com.sun.jersey.config.property.packages</param-name>
      <param-value>com.test.rest</param-value>
    </init-param>
    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Jersey REST Service</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>
   <context-param>
        <param-name>resteasy.scan</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>resteasy.scan.providers</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>resteasy.scan.resources</param-name>
        <param-value>false</param-value>
    </context-param>
</web-app>

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>TestJerseyOnJBoss</groupId>
  <artifactId>TestJerseyOnJBoss</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.3</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-bundle</artifactId>
        <version>1.17.1</version>
    </dependency>

        <dependency>
           <groupId>com.sun.jersey</groupId>
           <artifactId>jersey-json</artifactId>
           <version>1.17.1</version>
        </dependency>
    <dependency>
               <groupId>asm</groupId>
               <artifactId>asm</artifactId>
               <version>3.3.1</version>
               <type>jar</type>
               <scope>compile</scope>
    </dependency>
  </dependencies>

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