Erro com Servidor Jetty: 503

Boa tarde! Estou realizando o jetty:run no terminal e tento acessar o localhost:8080 no browse, porém ele sobe o servidor mas não consigo visualizar o Hello World do JSP.

Pom.xml

<build>
        <finalName>lojaweb</finalName>
        <plugins>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.3.7.v20160115</version>
            </plugin>
        </plugins>
    </build>

Alguns dos erros q ocorrem no jetty:run

Caused by: javax.servlet.UnavailableException: org.springframework.web.filter.CharacterEncodingFilter
[WARNING] Failed startup of context o.e.j.m.p.JettyWebAppContext@6272c96f{/,file:///C:/Eclipse/Eduardo/ws/lojaweb/src/main/webapp/,STARTING}{file:///C:/Eclipse/Eduardo/ws/lojaweb/src/main/webapp/} org.eclipse.jetty.util.MultiException: Multiple exceptions
[WARNING] unavailable javax.servlet.UnavailableException: com.quhaodian.servlet.RpcServlet
[WARNING] unavailable javax.servlet.UnavailableException: org.springframework.web.servlet.DispatcherServlet
[WARNING] java.lang.ClassNotFoundException: org.springframework.web.filter.DelegatingFilterProxy

Muito Obrigado.