方式一：繼承WebMvcConfigurerAdapter類

1、使用一個類來繼承

package com.wbg.springJavaConfig.spring;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.WebApplicationInitializer;
 
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import
 
 org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;

import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

@Configuration//聲明當前類是一個配置類（相當於一個Spring的xml檔案）
@EnableWebMvc//若無此註解，WebMvcConfigurerAdapter無效
/**
 *
 * @ComponentScan 掃描（"xxx"）包下的@Service、@Controller、@Component、@Repository的類，並註冊為Bean
 *相當於：<context:component-scan base-package="xxx" />
 
 
*/
@ComponentScan("com.wbg.springJavaConfig.controller")
public class SpringConfig extends WebMvcConfigurerAdapter {
    /**
     * @Bean 相當Spring配置檔案bean節點
     * 新增一個ViewResolver解析view 配置jsp
     * @return InternalResourceViewResolver
     * 這裡的配置相當於：
     * <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     *         <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
     *         <property name="prefix" value="/WEB-INF/jsp/" />
     *         <property name="suffix" value=".jsp" />
     *     </bean>
     */
    @Bean
    public InternalResourceViewResolver viewResolver(){
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".jsp");
        viewResolver.setViewClass(JstlView.class);
        return viewResolver;
    }

}
class WebInitializer implements WebApplicationInitializer {
    /**
     * <context-param>
     *         <param-name>contextConfigLocation</param-name>
     *         <param-value>classpath:spring/spring-*.xml</param-value>
     *     </context-param>
     *     <listener>
     *         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     *     </listener>
     *
     *
     * <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     *         <init-param>
     *             <param-name>contextConfigLocation</param-name>
     *             <param-value>classpath:spring-web.xml</param-value>
     *         </init-param>
     *
     * @param servletContext
     */
    public void onStartup(ServletContext servletContext){
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(SpringConfig.class);
        ctx.setServletContext(servletContext);
        ServletRegistration.Dynamic dynamic = servletContext.addServlet("dispatcher",new DispatcherServlet(ctx));
        dynamic.addMapping("/");
        dynamic.setLoadOnStartup(1);
    }

}

2、建立jsp

3、使用

方式二：繼承AbstractAnnotationConfigDispatcherServletInitializer類

1、建立WebInit繼承 ：

package com.wbg.springJavaConfig.spring2;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{ContextConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{SpringWebConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

2、建立：SpringWebConfig類

package com.wbg.springJavaConfig.spring2;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;


@Configuration
public class SpringWebConfig {
    @Bean
    public InternalResourceViewResolver internalResourceViewResolverConfig(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setViewClass(JstlView.class);
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Bean
    public StandardServletMultipartResolver multipartResolverConfig(){
        return new StandardServletMultipartResolver();
    }

    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();//對靜態資源的請求轉發到容器預設的servlet,而不使用 DispatcherServlet
    }
}

3、建立ContextConfig類

package com.wbg.springJavaConfig.spring2;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = {"com.wbg.springJavaConfig.controller"},excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,value = EnableWebMvc.class)})
public class ContextConfig {
}

3、使用

 demo:https://github.com/weibanggang/SpirngwebConfig.git