SpringMvc 以配置类的形式代替xml文件

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1、配置类

1.1、创建Mvc 项目之后创建 MyWebApplicationInitializer 类

实现接口 WebApplicationInitializer

public class MyWebApplicationInitializer implements WebApplicationInitializer {@Overridepublic void onStartup(ServletContext servletContext) throws ServletException {//关联AppConfig配置类AnnotationConfigWebApplicationContext context =new AnnotationConfigWebApplicationContext();context.register(AppConfig.class);//前端控制器DispatcherServlet dispatcherServlet = new DispatcherServlet(context);//添加前端控制器到web容器ServletRegistration.Dynamic dynamic =servletContext.addServlet("springmvc", dispatcherServlet);//设置该servlet启动时机 （web容器启动时，实列化servlet）dynamic.setLoadOnStartup(1);//设置servlet的匹配路径dynamic.addMapping("/");//添加编码过滤器servletContext.addFilter("encodingFilter",new CharacterEncodingFilter("UTF-8"));}}

1.2、创建 AppConfig 类

@Configuration
@ComponentScan("com.cxd")
public class AppConfig {@Beanpublic ViewResolver viewResolver() {InternalResourceViewResolver viewResolver =new InternalResourceViewResolver();viewResolver.setPrefix("/WEB-INF/views/");viewResolver.setSuffix(".jsp");return viewResolver;}
}

这样就可以访问页面了

2、用到的jar包

 <dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>6.1.11</version></dependency><dependency><groupId>jakarta.servlet</groupId><artifactId>jakarta.servlet-api</artifactId><version>6.0.0</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.34</version></dependency></dependencies>