Faces Servlet - ClassNotFound Exception

Question

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.

oh I am not aware of that. Let me try adding 2.0 jars and try. — samuelebe, Jun 18 '13 at 18:58
Alex: I am using myfaces-2.1.2.jar and FacesServlet comes from that jar. So, I guess am using JSF 2.1 jar. — samuelebe, Jun 18 '13 at 19:06
yes they should provide necessary classes. Are they in the right place? `WEB-INF/lib/` or `/lib/` ? — Alexandre Lavoie, Jun 18 '13 at 19:13
I have placed them in classpath(properties-> add external jars) and also, I have added them in J2EE module dependencies. — samuelebe, Jun 19 '13 at 14:16

score 8 · Answer 1 · answered Dec 20 '14 at 16:31

8

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

answered Dec 20 '14 at 16:31

Justcurious

2,201
1
21
36

score 2 · Answer 2 · answered Feb 05 '14 at 10:30

2

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

answered Feb 05 '14 at 10:30

UdayKiran Pulipati

6,579
7
67
92

score 0 · Answer 3 · answered Jun 18 '13 at 19:37

0

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.

answered Jun 18 '13 at 19:37

grepit

21,260
6
105
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1

would you please provide a comment as why you marked me down so I can update my answer based on your feedback? (thanks in advance) – grepit Jun 19 '13 at 13:25

score 0 · Answer 4 · answered May 08 '14 at 09:28

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...

score -1 · Answer 5 · answered Jan 17 '20 at 10:33

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.

Like in the other answer, with way more modern versions (yours are 8 years old)... — Kukeltje, Jan 17 '20 at 11:15

Faces Servlet - ClassNotFound Exception

5 Answers5