@RemoteServiceRelativePath("backendService")
public interface BackendService extends RemoteService {.......}

@Service (value = "backendService")
public class BackendServiceImpl extends RemoteServiceServlet implements BackendService {
    @Autowired
    private static JdbcTemplate jdbcTemplate;
.....
}

 <!--Backend page-->
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
         version="2.5">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:/applicationContext.xml
            classpath:/spring-security.xml
            classpath:/admin-config.xml
        </param-value>
    </context-param>
......
    <servlet-mapping>
        <servlet-name>pages</servlet-name>
        <url-pattern>/backend</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>admin</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:/admin-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>admin</servlet-name>
        <url-pattern>/backendService/*</url-pattern>
    </servlet-mapping>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

    <bean id="urlMapping" class="org.gwtwidgets.server.spring.GWTHandler">
        <property name="mappings">
            <map>
                <entry key="/service" value-ref="backendService"/>
            </map>
        </property>
    </bean>
</beans>

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to load bean class: com.backend.server.BackendServiceImpl; nested exception is java.io.FileNotFoundException: class path resource [com/google/gwt/user/server/rpc/RemoteServiceServlet.class] cannot be opened because it does not exist