java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

Question

I am trying to build a simple hello world application for two days using Jersey + Google app engine. For simple AppEngine project I followed these tutorials and both works just fine https://developers.google.com/appengine/docs/java/gettingstarted/creating https://developers.google.com/appengine/docs/java/webtoolsplatform

But now I am trying to add Jersey and following this tutorial http://www.vogella.com/articles/REST/article.html.

But server keeps giving me

java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

when I add these lines in 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_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>TestServer</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.myproject</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>
</web-app>

I have downloaded Jersey JAX-RS 2.1 RI bundle from here and have added all jar files in WEB-INF/lib folder as described in tutorial. And even after two days nothing is working. I have searched several times on Google and apparently people who are using Maven have solved it somehow but I am not using Maven neither did the guy who wrote that tutorial.

Just to check if even com.sun.jersey.spi.container.servlet.ServletContainer exists in imported Jersey jars I tried to just write this fully qualified name in Java and let the intellisense finish names but I couldn't get any intellisense after com.sun.je so my last guess is that there have been some package rearrangement in latest Jersey build and jersey is no longer inside com.sun. I am exhausted and I would appreciate any kind of help.

Answer 1

You have downloaded Jersey 2 (which RI of JAX-RS 2). The tutorial you're referring to uses Jersey 1. Download Jersey 1.17.1 from (here), should be sufficient for you.

Jersey 1 uses com.sun.jersey, and Jersey 2 uses org.glassfish.jersey hence the exception.

Also note that also init-param starting with com.sun.jersey won't be recognized by Jersey 2.

Edit

Registering Resources and Providers in Jersey 2 contains additional info on how to register classes/instances in Jersey 2.

Answer 2

If you are using jersey 2.x then you need different configuration in web.xml as servlet class is change in it. you can update your web.xml with following configuration.

    <servlet>
    <servlet-name>myrest</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>    
    <init-param>
      <param-name>jersey.config.server.provider.packages</param-name>
      <param-value>your.package.path</param-value>
    </init-param>
    <init-param>
     <param-name>unit:WidgetPU</param-name>
     <param-value>persistence/widget</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>myrest</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>

Answer 3

Add this in pom

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-server</artifactId>
    <version>1.17.1</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-core</artifactId>
    <version>1.17.1</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-servlet</artifactId>
    <version>1.17.1</version>
</dependency>

Answer 4

It's an eclipse setup issue, not a Jersey issue.

From this thread ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

Right click your eclipse project Properties -> Deployment Assembly -> Add -> Java Build Path Entries -> Gradle Dependencies -> Finish.

So Eclipse wasn't using the Gradle dependencies when Apache was starting .

Answer 5

I also faced a similar issue. Resolved the problem by going through the step step tutorial from the below link.

http://examples.javacodegeeks.com/enterprise-java/rest/jersey/jersey-hello-world-example/

• The main thing to notice is that the jersey libraries should be placed correctly in TOMCAT WEB-INF/lib folder. It is done automatically by the Eclipse settings mentioned in the above link. It will create a WAR file with the dependent JAR Files. Else, you will run into problems with ClassNotFound Exception.

apache-tomcat-7.0.56-windows-x64\apache -tomcat-7.0.56\webapps\JerseyJSONExample\WEB-INF\lib

"11/23/2014 12:06 AM 130,458 jersey-client-1.9.jar

11/23/2014 12:06 AM 458,739 jersey-core-1.9.jar

11/23/2014 12:06 AM 147,952 jersey-json-1.9.jar

11/23/2014 12:06 AM 713,089 jersey-server-1.9.jar" 4 File(s) 1,450,238 bytes

• The second tutorial explains about how to create a Webservice which produces and consumes JSON output.

http://examples.javacodegeeks.com/enterprise-java/rest/jersey/json-example-with-jersey-jackson/

Both the links gave a good picture on how things work and save a lot of time.

Answer 6

try this :

org.glassfish.jersey.servlet.ServletContainer

on servlet-class

Answer 7

I had the same problem as you though I have followed a different guide: http://www.mkyong.com/webservices/jax-rs/jersey-hello-world-example/

The strange part is that, in this guide I have used, I should not have any problem with compatibility between versions (1.x against 2.x) because following the guide you use the jersey 1.8.x on pom.xmland in the web.xmlyou refer to a class (com.sun.jersey.spi.container.servlet.ServletContainer) as said before of 1.x version. So as I can infer this should be working.

My guess is because I'm using JDK 1.7 this class does not exist anymore.

---

After, I tried to resolve with the answers before mine, did not helped, I have made changes on the pom.xmland on the web.xml the error changed to: java.lang.ClassNotFoundException: org.glassfish.jersey.servlet.ServletContainer

Which supposedly should be exist!

As result of this error, I found a "new" solution: http://marek.potociar.net/2013/06/13/jax-rs-2-0-and-jersey-2-0-released/

With Maven (archetypes), generate a jersey project, likes this:

mvn archetype:generate -DarchetypeGroupId=org.glassfish.jersey.archetypes -DarchetypeArtifactId=jersey-quickstart-webapp -DarchetypeVersion=2.0

And it worked for me! :)

Answer 8

We get this error because of build path issue. You should add "Server Runtime" libraries in Build Path.

"java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer"

Please follow below steps to resolve class not found exception.

Right click on project --> Build Path --> Java Build Path --> Add Library --> Server Runtime --> Apache Tomcat v7.0