AppInitializer.java

package net.liuxuan.spring.mvc;

import org.apache.catalina.security.SecurityConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import org.springframework.web.servlet.support.AbstractDispatcherServletInitializer;

import javax.servlet.ServletRegistration;

/**
 * Copyright (c) 2010-2016.  by Liuxuan   All rights reserved.
 * ***************************************************************************
 * 源文件名:  net.liuxuan.spring.mvc.AppInitializer
 * 功能:
 * 版本:	@version 1.0
 * 编制日期: 2016/2/27 14:25
 * 修改历史: (主要历史变动原因及说明)
 * YYYY-MM-DD |    Author      |	 Change Description
 * 2016/2/27  |    Moses       |     Created
 */
//@Order(2)
@Controller
public class AppInitializer  extends AbstractAnnotationConfigDispatcherServletInitializer  {

    private static Logger log =  LoggerFactory.getLogger(AppInitializer.class);
    /**
     * Specify {@link Configuration @Configuration}
     * and/or {@link Component @Component} classes to be
     * provided to the {@linkplain #createRootApplicationContext() root application context}.
     *
     * @return the configuration classes for the root application context, or {@code null}
     * if creation and registration of a root context is not desired
     */
    @Override
    protected Class<?>[] getRootConfigClasses() {
        log.debug("=====================***********1*************===================");
//        return new Class[] {ServicesConfig.class, PersistenceConfig.class, SecurityConfig.class};
        return null;
    }

    /**
     * Specify {@link Configuration @Configuration}
     * and/or {@link Component @Component} classes to be
     * provided to the {@linkplain #createServletApplicationContext() dispatcher servlet
     * application context}.
     *
     * @return the configuration classes for the dispatcher servlet application context or
     * {@code null} if all configuration is specified through root config classes.
     */
    @Override
    protected Class<?>[] getServletConfigClasses() {
        log.debug("=====================************2************===================");
//        return new Class<?>[0];
        return null;
    }

    /**
     * Specify the servlet mapping(s) for the {@code DispatcherServlet} &mdash;
     * for example {@code "/"}, {@code "/app"}, etc.
     *
     * @see #registerDispatcherServlet(ServletContext)
     */
    @Override
    protected String[] getServletMappings() {
        log.debug("=====================***********3*************===================");
        return new String[]{"/"};
    }

    @Override
    protected void customizeRegistration(ServletRegistration.Dynamic registration) {
        log.debug("=====================*************4***********===================");
        registration.setInitParameter("throwExceptionIfNoHandlerFound", "true");
    }

    @Override
    protected DispatcherServlet createDispatcherServlet(WebApplicationContext servletAppContext) {
        final DispatcherServlet dispatcherServlet = (DispatcherServlet) super.createDispatcherServlet(servletAppContext);
        log.debug("=====================*************5***********===================");
        dispatcherServlet.setThrowExceptionIfNoHandlerFound(true);
        return dispatcherServlet;
    }


}