java.lang.ClassNotFoundException: org.apache.jasper.runtime.JspApplicationContextImpl | jetty:run - maven-3

Question

I am getting
java.lang.ClassNotFoundException: org.apache.jasper.runtime.JspApplicationContextImpl
while using jetty:run plugin on a web project.
The issue is occurring only on some machines while working on some !
Java Version Used : 7
Maven Version : 3.1
Relevant dependencies and plugins:-

Answer 1

Adding this dependency fixed it :-
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jsp-2.1</artifactId>
<version>6.0.0</version>
</dependency>

Answer 2

If you are running jetty on a port below 1024 on linux or osx this could be caused by the process not having permissions to bind to the port. In my case above the stack trace was the error.
Blockquote[ERROR] Failed to execute goal org.mortbay.jetty:jetty-maven-plugin:8.1.4.v20120524:run (default-cli) on project projectName: Failure: Permission denied -> [Help 1]
Blockquote
Running the command with sudo fixed the issue.

Answer 3

This is occurred for me because the port to be used by the Jasper is already occupied by other process. I did stopped the application running on that port and restarted the app it worked fine.

Answer 4

you can use this configuration in pom.xml in ide->idea
<properties>
<jdk.version>1.7</jdk.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<!-- resource plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<!-- compiler plugin, set JDK version -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
<compilerArguments>
<verbose />
<bootclasspath>${java.home}/lib/rt.jar${path.separator}${java.home}/lib/jce.jar</bootclasspath>
</compilerArguments>
</configuration>
</plugin>
<!-- deploye plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.7</version>
<configuration>
<skip>false</skip>
</configuration>
</plugin>
<!-- war plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.2</version>
</plugin>
<!-- jetty plugin -->
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>maven-jetty-plugin</artifactId>
<version>6.1.26</version>
<configuration>
<systemProperties>
<systemProperty>
<name>tomcat.port</name>
<value>8098</value>
</systemProperty>
</systemProperties>
<webApp>${basedir}/target/${project.artifactId}.war</webApp>
<connectors>
<connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
<port>8088</port>
</connector>
</connectors>
<scanIntervalSeconds>5</scanIntervalSeconds>
<webAppConfig>
<contextPath>/</contextPath>
</webAppConfig>
</configuration>
</plugin>
</plugins>
</build>