servlet not available error in eclipse spring mvc projects

Question

i am running the project using eclipse. in one project i get the following error

18/02/2011 12:23:41 AM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\java\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\java\bin;C:\Program Files (x86)\MySQL\MySQL Server 5.1\bin;C:\Program Files (x86)\IDM Computer Solutions\UltraEdit\;C:\java\bin 18/02/2011 12:23:42 AM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:test' did not find a matching property. 18/02/2011 12:23:42 AM org.apache.coyote.AbstractProtocolHandler init INFO: Initializing ProtocolHandler ["http-bio-8085"] 18/02/2011 12:23:42 AM org.apache.coyote.AbstractProtocolHandler init INFO: Initializing ProtocolHandler ["ajp-bio-8009"] 18/02/2011 12:23:42 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 511 ms 18/02/2011 12:23:42 AM org.apache.catalina.core.StandardService startInternal INFO: Starting service Catalina 18/02/2011 12:23:42 AM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/7.0.8 18/02/2011 12:23:42 AM org.apache.catalina.core.ApplicationContext log INFO: Marking servlet ds as unavailable 18/02/2011 12:23:42 AM org.apache.catalina.core.StandardContext loadOnStartup SEVERE: Servlet /test threw load() exception java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1048) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:996) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4834) at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5155) at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5150) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) 18/02/2011 12:23:42 AM org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["http-bio-8085"] 18/02/2011 12:23:42 AM org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["ajp-bio-8009"] 18/02/2011 12:23:42 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 332 ms 18/02/2011 12:23:52 AM org.apache.catalina.core.StandardWrapperValve invoke INFO: Servlet ds is currently unavailable

my ds.servlet is

<?xml version="1.0" encoding="UTF-8"?>
<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.orf/schema/beans/spring-beans-2.0.xsd">

    <!-- Configuring DataSource -->
    <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
        <property name="url">
            <value>jdbc:mysql://localhost:3306/springdb</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>root</value>
        </property>
    </bean>


    <!-- Configuring jdbcTemplate -->
    <bean id="jdbctemp" class="org.springframework.jdbc.core.JdbcTemplate">
        <constructor-arg>
            <ref local="datasource" />
        </constructor-arg>
    </bean>

    <bean id="loginModel" class="com.santosh.spring.LoginModel">
        <constructor-arg>
            <ref local="jdbctemp" />
        </constructor-arg>
    </bean>

    <bean id="logincnt" class="com.santosh.spring.LoginController">
        <property name="loginModel" >
            <ref local="loginModel"/>
        </property>

        <!-- Configure Command ClassName  -->

        <property name="commandClass" >
        <value type="java.lang.Class"> com.santosh.spring.UserDetails </value>
        </property>

        <!-- Configure the command name , the name to use when binding the instantiated command class to the request -->

        <property name="commandName">
            <value> UserDetails </value>
        </property>

    </bean>


    <!-- Configure URL Mapping   -->

    <bean id="myurlmapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" >
        <property name="mappings">
            <props>
                <prop key="/login.spring">logincnt</prop>
            </props>
        </property>
        <property name="urlMap">
<map>
<entry key="/hello.springs">
<ref bean="helloController"/>
</entry>
</map>
</property>
    </bean>
    <bean id="helloController" class="net.roseindia.web.HelloWorldController"> </bean>

</beans>

rahulmohan rahulmohan · Accepted Answer · 2011-02-17T19:40:50

Dave is right. However, Tomcat has some hot-deployment issues because of which it sometimes fails to load the class which is actually present in the classpath. So, if you find that you actually have the jar at the right place, then simply clean the tomcat (right click the server and select clean) and then start again.

servlet not available error in eclipse spring mvc projects

2 Answers