Jersey REST Web Service, Tomcat, Eclipse and 404's

Question

I've read through a number of posts, but just can't seem to solve my problem. You'll also see tons of posts very similar to this one, even the same tutorial. Even following them, I can't seem to get to the answer.

Essentially, I'm trying to follow the simple tutorial at: http://www.vogella.com/articles/REST/

I've made a few changes to make it compatible with Jersey 2.x

I'm using: Eclipse Tomcat 6 (Deployed/Run as within Eclipse) jaxrs-ri-2.0 I've enabled the JAX-RS Facet in Eclipse

Everything builds fine Tomcat starts fine within Eclipse I can get to a static page content via:

http://localhost:8080/RestTEST2/index.html

However, when I try to access my service via:

http://localhost:8080/RestTEST2/jaxrs/hello

I receive a 404 with "message not found" and "The requested resource (Not Found) is not available."

Here is my web.xml which is located at /WebContent/WEB-INF/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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>TestREST2</display-name>
<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet>
  <description>JAX-RS Tools Generated - Do not modify</description>
  <servlet-name>JAX-RS Servlet</servlet-name>
  <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
    <init-param>
      <param-name>com.sun.jersey.config.property.packages</param-name>
      <param-value>TestREST</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>  
  </servlet>
    <servlet-mapping>
      <servlet-name>JAX-RS Servlet</servlet-name>
      <url-pattern>/jaxrs/*</url-pattern>
    </servlet-mapping>
</web-app>

Here is my Java class:

package TestREST;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

// Plain old Java Object it does not extend as class or implements 
// an interface

// The class registers its methods for the HTTP GET request using the @GET annotation. 
// Using the @Produces annotation, it defines that it can deliver several MIME types,
// text, XML and HTML. 

// The browser requests per default the HTML MIME type.

//Sets the path to base URL + /hello
@Path("/hello")
public class Hello {

  // This method is called if TEXT_PLAIN is request
  @GET
  @Produces(MediaType.TEXT_PLAIN)
  public String sayPlainTextHello() {
    return "Hello Jersey";
  }

  // This method is called if XML is request
  @GET
  @Produces(MediaType.TEXT_XML)
  public String sayXMLHello() {
    return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
  }

  // This method is called if HTML is request
  @GET
  @Produces(MediaType.TEXT_HTML)
  public String sayHtmlHello() {
    return "<html> " + "<title>" + "Hello Jersey" + "</title>"
        + "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
  }   
}

I also have a JAX-RS User Library configured and referenced that includes all the JAX-RS jars.

Thoughts on what would cause the web service to not be found?

Michal Gajdos Michal Gajdos · Accepted Answer · 2013-07-17T21:17:34

Jersey 2.0 does not recognize init-param with name com.sun.jersey.config.property.packages (web.xml). Try to change it to jersey.config.server.provider.packages as described in ServerProperties.PROVIDER_PACKAGES.

UPDATE (2020): try this link for current apidocs ServerProperties.PROVIDER_PACKAGES:

Jersey REST Web Service, Tomcat, Eclipse and 404's

5 Answers