零配置搭建SpringMVC

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第一步，配置DispatcherServlet

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;public class DispatcherServlet extends AbstractAnnotationConfigDispatcherServletInitializer{@Overrideprotected Class<?>[] getRootConfigClasses() {return new Class<?>[] {RootConfig.class};}@Overrideprotected Class<?>[] getServletConfigClasses() {return new Class<?>[] {WebConfig.class};}@Overrideprotected String[] getServletMappings() {return new String[] {"/"};}}

第二步，创建RootConfig

import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.ComponentScan.Filter;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.FilterType;import org.springframework.web.servlet.config.annotation.EnableWebMvc;@Configuration@ComponentScan(basePackages={"com.shopcz"},excludeFilters={@Filter(type=FilterType.ANNOTATION , value=EnableWebMvc.class)})public class RootConfig {}

第三步，创建WebConfig

import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.ViewResolver;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.EnableWebMvc;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.view.InternalResourceViewResolver;@Configuration@EnableWebMvc@ComponentScan("com.shopcz")public class WebConfig extends WebMvcConfigurerAdapter{@Beanpublic ViewResolver viewResolver(){InternalResourceViewResolver resolver = new InternalResourceViewResolver();resolver.setPrefix("/WEB-INF/views/");resolver.setSuffix(".jsp");resolver.setExposeContextBeansAsAttributes(true);return resolver;}@Overridepublic void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {configurer.enable();}}

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