Develop Reference

CXF : java.lang.ClassNotFoundException: org.apache.cxf.transport.servlet.CXFServlet

I am trying to deploy a rest web service in WAS 8.0
The application EAR is getting installed successfully.
However, both on publishing as well as on hitting the service from web browser after publishing, I am getting below error:
[3/13/14 13:42:20:652 IST] 00000024 servlet E com.ibm.ws.webcontainer.servlet.ServletWrapper run SRVE8052E: Logging ClassNotFoundException
java.lang.ClassNotFoundException: class java.lang.ClassNotFoundException: org.apache.cxf.transport.servlet.CXFServlet
at java.beans.Beans.instantiate(Beans.java:190)
at java.beans.Beans.instantiate(Beans.java:75)
at com.ibm.ws.webcontainer.servlet.ServletWrapper$1.run(ServletWrapper.java:1471)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java:1460)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.load(ServletWrapper.java:1358)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:982)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3751)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:962)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1690)
However, the jar containing the class viz. cxf-rt-transports-http-2.7.4.jar is present inside lib directory of the WAR inside the EAR installed.
What is the cause of the issue ?
How can I resolve it ?
Update: My web.xml is as below:
<web-app>
<display-name>MyService</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>CXFServlet</servlet-name>
<display-name>CXF Servlet</display-name>
<servlet-class>
org.apache.cxf.transport.servlet.CXFServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>CXFServlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>

I see that you mentioned the word "publish", which hints that you might be using Eclipse, or possibly IBM's RAD or even MyEclipse Blue.
In case that's true, read on...
While your .ear, generated by m2e/Maven, may have the .jar file present in the .war file, there's a chance that the .ear and .war file, generated by m2e-wtp, is missing the .jar file. m2e-wtp's generated .ear file is what's used when you publish/republish your application to WAS from within Eclipse/RAD/MyEclipse Blue.
Try removing the app from your local WAS, finding the location of that m2e-wtp-generated .ear file, and deleting it. From there, m2e-wtp should automatically generate a fresh .ear file if you clean your project (all associated pom, ear, war, etc.)
When you publish your app, it should find the class. I've had the same problem happen to me in the past. My suggestion has fixed the problem.
Other than that, you may need to set the Classloader Policy to PARENT_LAST and check that you're using a single classloader for the entire app (the 2nd set of radio buttons below the Classloader Policy radio buttons) within the WAS admin console. However, I doubt that the Classloader Policy is the issue.

Faces Servlet - ClassNotFound Exception [duplicate]

This question already has an answer here:
How to properly install and configure JSF libraries via Maven?
(1 answer)
Closed 3 years ago.
I am developing a sample application using JSF 1.2 and PrimeFaces 3.5. I have RAD in my desktop and created a new dynamic web project. I have written xhtml file with primeface editor tag. But, when I ran the project.. it is throwing "java.lang.ClassNotFoundException" for FacesServlet though the servlet exists in the classpath.
My web.xml looks like this
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>
PrimeFacesNew</display-name>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<!-- JSF mapping -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map these files with JSF -->
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>HelloWorld.xhtml</welcome-file>
</welcome-file-list>
</web-app>
and my HelloWorld.xhtml looks like this
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
</h:head>
<h:body>
<h1>Hello World PrimeFaces</h1>
<h:form>
<p:editor value="This is PrimeFace editor" />
</h:form>
</h:body>
</html>
I have added below jars in to my classpath..
myfaces-api-2.1.12.jar
myfaces-impl-2.1.12.jar
myfaces-bundle-2.1.12.jar
slf4j-api-1.7.5.jar
slf4j-simple-1.7.5.jar
primefaces-3.5.jar
and when I ran using tomcat 6.0 in RAD, it is throwing below exception..
SEVERE: Error loading WebappClassLoader
delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader#78a978a9
javax.faces.webapp.FacesServlet
Throwable occurred: java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1083)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Jun 18, 2013 1:15:10 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /primefaces threw load() exception
Throwable occurred: java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1083)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
The prime face components are also displayed as question mark in the RAD. I tried all the possible solutions in Google, but it hasn't worked for me. Please correct me where I am doing wrong..
Thanks.

This issue occured to me because i didn't provide path in Deployement option in properties of project:
Right click on project ---> select "properties" --> Deployement assembly --> "ADD" option --> select "java build path entries" --> select path

Faces Servlet class is not recognized from what you added jars
myfaces-api-2.1.12.jar, myfaces-impl-2.1.12.jar
Add below jars to WEB-INF/lib
Download jsf-impl-2.2.5, jsf-api-2.2.5 or from maven dependency jsf-api, jsf-impl

You need to use jsf-impl.jar and jsf-api.jar since you are using JSF 1.2. Other people are also having this problem read this which talks about incompatibility and you specifies the same error which have described here. Hope this helps you resolve this classNotFound error.

if you get classnotfoundExecption error for servlets always check have you added the required
libraries in the WEB-INF/lib folder...
jars added to build path are not available to server components....
you must explicitly add the jars to WEB-INF/lib folder only...

Adding the following dependencies should solve the problem. I was creating a webapp with the JSF dependencies in the web.xml. So, had to add these in pom.xml to get the problem resolved.
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.1.7</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.1.7</version>
</dependency>
Use whichever version you require.

The requested resource is not available while publishing on tomcat

I'm trying to publish a simple java web service using tomcat. Referring to below screenshot, I have HelloWorld.java which is service interface and its HelloWorldImpl.java implementation class.
Also I've created web.xml and sun-jaxws.xml.
When I right click the project, select Run As and then Run on Server, I get 404 error message as shown in bottom of screenshot.
The URL which internal browser tries to reach is http://localhost:8081/MySqlConnect/ where MySqlConnect is project name. Note that I'm using 8081 as port number.
I also tried http://localhost:8081/HelloWorld/hello, but it didn't worked.
I have also provided the code for all files below.
I'm not able to understand where am I going wrong? Any help appreciated.
HelloWorldImpl.java
package com.mycompany.service;
import javax.jws.WebService;
#WebService(endpointInterface = "com.mycompany.service.HelloWorld", serviceName = "HelloWorld")
public class HelloWorldImpl implements HelloWorld {
#Override
public String sayGreeting(String name) {
return "Greeting " + name + "!";
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems,
Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">
<web-app>
<listener>
<listener-class>
com.sun.xml.ws.transport.http.servlet.WSServletContextListener
</listener-class>
</listener>
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>
com.sun.xml.ws.transport.http.servlet.WSServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>120</session-timeout>
</session-config>
</web-app>
sun-jaxws.xml
<?xml version="1.0" encoding="UTF-8"?>
<endpoints xmlns="http://java.sun.com/xml/ns/jax-ws/ri/runtime"
version="2.0">
<endpoint name="HelloWorld" implementation="com.mycompany.service.HelloWorldImpl"
url-pattern="/hello" />
</endpoints>
Edit 1
Log-cat
INFO: Starting Servlet Engine: Apache Tomcat/7.0.33
com.sun.xml.ws.transport.http.servlet.WSServletContextListener parseAdaptersAndCreateDelegate
SEVERE: WSSERVLET11: failed to parse runtime descriptor: java.lang.NoClassDefFoundError: javax/xml/ws/soap/AddressingFeature$Responses
java.lang.NoClassDefFoundError: javax/xml/ws/soap/AddressingFeature$Responses
Caused by: java.lang.ClassNotFoundException: javax.xml.ws.soap.AddressingFeature$Responses
Edit 2
As suggested here, I downloaded all libraries and place in tomcat lib folder but now I get this error in log:
com.sun.xml.ws.transport.http.servlet.WSServletContextListener parseAdaptersAndCreateDelegate
SEVERE: WSSERVLET11: failed to parse runtime descriptor: java.lang.NoSuchMethodError: com.sun.xml.ws.assembler.TubelineAssemblyController: method <init>()V not found
java.lang.NoSuchMethodError: com.sun.xml.ws.assembler.TubelineAssemblyController: method <init>()V not found
If I add all libraries to project and then try to run it, I get following error:
com.sun.xml.ws.transport.http.servlet.WSServletContextListener parseAdaptersAndCreateDelegate
SEVERE: WSSERVLET11: failed to parse runtime descriptor: com.sun.xml.ws.util.ServiceConfigurationError: com.sun.xml.ws.policy.jaxws.spi.PolicyFeatureConfigurator: Provider com.sun.xml.ws.transport.tcp.policy.TCPTransportFeatureConfigurator is specified in jar:file:/C:/Apache-Tomcat-7/lib/webservices-rt-2.1-b16.jar!/META-INF/services/com.sun.xml.ws.policy.jaxws.spi.PolicyFeatureConfiguratorbut could not be instantiated: java.lang.ClassCastException
com.sun.xml.ws.util.ServiceConfigurationError: com.sun.xml.ws.policy.jaxws.spi.PolicyFeatureConfigurator: Provider com.sun.xml.ws.transport.tcp.policy.TCPTransportFeatureConfigurator is specified in jar:file:/C:/Apache-Tomcat-7/lib/webservices-rt-2.1-b16.jar!/META-INF/services/com.sun.xml.ws.policy.jaxws.spi.PolicyFeatureConfiguratorbut could not be instantiated: java.lang.ClassCastException
Note this: com.sun.xml.ws.policy.jaxws.spi.PolicyFeatureConfiguratorbut could not be instantiated: java.lang.ClassCastException

The correct url is http://localhost:8081/MySqlConnect/hello as MySqlConnect is the name of your context and hello the web service url.
Also its a webservice so to access it properly you can make a SOAP call.
But the root cause is your web application is not starting due to unable to find class javax.xml.ws.soap.AddressingFeature$Responses.
Have you added right dependencies? Search in those dependencies if this class exists. Response is a inner class of AddressingFeature.

Jersey setup on app engine

I recently added jersey to my app engine project, everything works great on my local machine but when I try to access the page on the deployed site I get errors. I think I might be including an unsupported class, but I don't think I'm using any. Most of my code is an exact copy from this guide to setting up jQuery upload
Here is my code:
#GET
#Path("/url")
public Response getCallbackUrl() {
/* this is /_ah/upload and it redirects to its given path */
String url = blobstoreService.createUploadUrl("/rest/file");
return Response.ok(new FileUrl(url), MediaType.APPLICATION_JSON).build();
}
web.xml:
<servlet>
<servlet-name>jersey</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.thedailycaption</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>jersey</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
here is the error I am getting:
Uncaught exception from servlet
java.lang.NullPointerException
at com.sun.jersey.spi.container.ContainerRequest.<init>(ContainerRequest.java:188)
at com.sun.jersey.spi.container.servlet.WebComponent.createRequest(WebComponent.java:450)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:380)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.thedailycaption.Controller.FacebookLogin.doFilter(FacebookLogin.java:165)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:102)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
Here are the errors on startup:
java.lang.SecurityException: Unable to get members for class com.sun.jersey.atom.rome.impl.provider.entity.AtomFeedProvider
at com.google.appengine.runtime.Request.process-51d788e4ae40f0dc(Request.java)
at java.lang.Class.getDeclaredMethods(Class.java:253)
at com.sun.jersey.core.reflection.MethodList.getAllDeclaredMethods(MethodList.java:70)
at com.sun.jersey.core.reflection.MethodList.<init>(MethodList.java:64)
at com.sun.jersey.core.spi.component.ComponentConstructor.getPostConstructMethods(ComponentConstructor.java:131)
at com.sun.jersey.core.spi.component.ComponentConstructor.<init>(ComponentConstructor.java:123)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:165)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:137)
and
com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider: The provider class, class com.sun.jersey.atom.rome.impl.provider.entity.AtomEntryProvider, could not be instantiated. Processing will continue but the class will not be utilized
java.lang.SecurityException: Unable to get members for class com.sun.jersey.atom.rome.impl.provider.entity.AtomEntryProvider
at com.google.appengine.runtime.Request.process-51d788e4ae40f0dc(Request.java)
at java.lang.Class.getDeclaredMethods(Class.java:253)
at com.sun.jersey.core.reflection.MethodList.getAllDeclaredMethods(MethodList.java:70)
at com.sun.jersey.core.reflection.MethodList.<init>(MethodList.java:64)
at com.sun.jersey.core.spi.component.ComponentConstructor.getPostConstructMethods(ComponentConstructor.java:131)
at com.sun.jersey.core.spi.component.ComponentConstructor.<init>(ComponentConstructor.java:123)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:165)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:137)
at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:256)
at com.sun.jersey.core.spi.component.ProviderServices.getServices(ProviderServices.java:160)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:176)
and
com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider: The provider class, class com.sun.jersey.atom.rome.impl.provider.entity.AtomFeedProvider, could not be instantiated. Processing will continue but the class will not be utilized
java.lang.SecurityException: Unable to get members for class com.sun.jersey.atom.rome.impl.provider.entity.AtomFeedProvider
at com.google.appengine.runtime.Request.process-51d788e4ae40f0dc(Request.java)
at java.lang.Class.getDeclaredMethods(Class.java:253)
at com.sun.jersey.core.reflection.MethodList.getAllDeclaredMethods(MethodList.java:70)
at com.sun.jersey.core.reflection.MethodList.<init>(MethodList.java:64)
at com.sun.jersey.core.spi.component.ComponentConstructor.getPostConstructMethods(ComponentConstructor.java:131)
at com.sun.jersey.core.spi.component.ComponentConstructor.<init>(ComponentConstructor.java:123)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:165)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:137)
at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:256)
at com.sun.jersey.core.spi.component.ProviderServices.getServices(ProviderServices.java:160)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initWriters(MessageBodyFactory.java:207)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:163)
at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1310)
at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:168)
and
com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider: The provider class, class com.sun.jersey.atom.rome.impl.provider.entity.AtomEntryProvider, could not be instantiated. Processing will continue but the class will not be utilized
java.lang.SecurityException: Unable to get members for class com.sun.jersey.atom.rome.impl.provider.entity.AtomEntryProvider
at com.google.appengine.runtime.Request.process-51d788e4ae40f0dc(Request.java)
at java.lang.Class.getDeclaredMethods(Class.java:253)
at com.sun.jersey.core.reflection.MethodList.getAllDeclaredMethods(MethodList.java:70)
at com.sun.jersey.core.reflection.MethodList.<init>(MethodList.java:64)
at com.sun.jersey.core.spi.component.ComponentConstructor.getPostConstructMethods(ComponentConstructor.java:131)
at com.sun.jersey.core.spi.component.ComponentConstructor.<init>(ComponentConstructor.java:123)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:165)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:137)
at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:256)
and
Uncaught exception from servlet
java.lang.ExceptionInInitializerError
at com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:83)
at com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:176)
at com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:282)
at com.sun.xml.bind.v2.runtime.property.ArrayProperty.<init>(ArrayProperty.java:69)
at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.<init>(ArrayERProperty.java:88)
at com.sun.xml.bind.v2.runtime.property.ArrayElementProperty.<init>(ArrayElementProperty.java:100)
at com.sun.xml.bind.v2.runtime.property.ArrayElementNodeProperty.<init>(ArrayElementNodeProperty.java:62)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:33)

You need to add
<init-param>
<param-name>com.sun.jersey.config.feature.DisableWADL</param-name>
<param-value>true</param-value>
</init-param>
to web.xml
This prevents classes that use reflection, which is not allowed on app engine.

Servlet "newspring" is not available

Trying to set up a new spring project and im having this issue where I get this error (HTTP Status 404 - Servlet newspring is not available) when I navigate to a page that I expect to get routed through to a controller.
web.xml
<servlet>
<servlet-name>springapp</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springapp</servlet-name>
<url-pattern>/app/*</url-pattern>
</servlet-mapping>
So I looked in the tomcat logs and I see this exception:
SEVERE: Error loading
WebappClassLoader delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader: org.apache.catalina.loader.StandardClassLoader#a1807c
org.springframework.web.servlet.DispatcherServlet
java.lang.ClassNotFoundException:
org.springframework.web.servlet.DispatcherServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1095)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4149)
but the supposedly missing class is actually present in the spring-webmvc.jar which is present in the WEB-INF/libs(at tomcatfolder/webapp/newSpring/WEB-INF/libs).
Is it unable to look here ?

Assuming I read correctly, the folder should be /WEB-INF/lib, not /WEB-INF/libs - note the lack of s at the end!