ServletContextImpl.java 文件源码

@Override
public ServletRegistration.Dynamic addServlet(final String servletName, final String className) {
    ensureNotProgramaticListener();
    ensureNotInitialized();
    try {
        if (deploymentInfo.getServlets().containsKey(servletName)) {
            return null;
        }
        ServletInfo servlet = new ServletInfo(servletName, (Class<? extends Servlet>) deploymentInfo.getClassLoader().loadClass(className));
        readServletAnnotations(servlet);
        deploymentInfo.addServlet(servlet);
        ServletHandler handler = deployment.getServlets().addServlet(servlet);
        return new ServletRegistrationImpl(servlet, handler.getManagedServlet(), deployment);
    } catch (ClassNotFoundException e) {
        throw UndertowServletMessages.MESSAGES.cannotLoadClass(className, e);
    }
}