public class CustomServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
}
<servlet>
<servlet-name>customServlet</servlet-name>
<servlet-class>com.example.CustomServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>customServlet</servlet-name>
<url-pattern>/custom</url-pattern>
</servlet-mapping>
@WebServlet(name = "customServlet", urlPatterns = "/custom")
public class CustomServlet extends HttpServlet {
// ...
}
public class CustomFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
filterChain.doFilter(request, response);
}
@Override
public void destroy() {
}
}
<filter>
<filter-name>customFilter</filter-name>
<filter-class>com.example.CustomFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>customFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
public class CustomListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent servletContextEvent) {
}
@Override
public void contextDestroyed(ServletContextEvent servletContextEvent) {
}
}
<listener>
<listener-class>com.example.CustomListener</listener-class>
</listener>
