HttpServlet not found?

Question

Hi,
I get an NoClassDefFoundError, when I try to access a servlet. I compiled it with "javac -cp /home/tomcat/j2ee/lib/j2ee.jar:/home/tomcat/mysql MyServlet.java". this displays no error.
But I can't access the servlet. it shows me that:
exception
javax.servlet.ServletException: Error allocating a servlet instance
root cause
java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletall that happens only in one "webapps"-dircetory, all others are working fine. Even when I copy one servlet from another "webapp" to it, I get that error.

Answer 1

The error indicate that your class file is not found by servlet container. I guess your directory structure looks kinda weird. What you need to do is
1. replace db with Servlets
2. create a package "test" and store your file under $CATALINA_HOME/webapps/Servlets/WEB-INF/classes/test/Servlet.java
3. Edit your web.xml
<servlet>
<servlet-name>Servlet</servlet-name>
<servlet-class>test.Servlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Servlet</servlet-name>
<url-pattern>*.try</url-pattern>
</servlet-mapping>
4. Access by http://localhost:8080/Servlets/first.try
That should work