• 使用原生注解注入servlet組件：@WebServlet處理請(qǐng)求路由，+主配置類(lèi)中標(biāo)注@ServletComponentScan掃描原生注解所在的路徑

• @WebServlet(urlPatterns = "/my")

• public class MyServlet extends HttpServlet {

• @Override

• protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

• resp.getWriter().write("66666");

• }

• }

• 


• @MapperScan("com.atguigu.admin.mapper")

• @ServletComponentScan(basePackages = "com.atguigu.admin")

• @SpringBootApplication(exclude = RedisAutoConfiguration.class)

• public class Boot05WebAdminApplication {

• public static void main(String[] args) {

• SpringApplication.run(Boot05WebAdminApplication.class, args);

• }

• }

• ``

• 


• - 使用原生注解注入filter組件：@WebFilter + @ServletComponentScan

• 


@Slf4j
@WebFilter(urlPatterns={"/css/","/images/"}) // 表示攔截該路徑下的靜態(tài)資源
public class MyFilter implements Filter {

• @Override

• public void init(FilterConfig filterConfig) throws ServletException {

• log.info("MyFilter初始化完成");

• }

• 


• @Override

• public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

• log.info("MyFilter工作"); ? // 攔截后進(jìn)行邏輯處理

• chain.doFilter(request,response); ? // 最后放行，放行后可訪問(wèn)

• }

• 


• @Override

• public void destroy() {

• log.info("MyFilter銷(xiāo)毀");

• }

• 


}

• 


• - 使用原生組件注入listener組件：@WebListener + @ServletComponentScan

• 


@Slf4j
@WebListener
public class MyServletContextListener implements ServletContextListener {

• @Override

• public void contextInitialized(ServletContextEvent sce) {

• log.info("MySwervletContextListener監(jiān)聽(tīng)到項(xiàng)目初始化完成");

• }

• 


• @Override

• public void contextDestroyed(ServletContextEvent sce) {

• log.info("MySwervletContextListener監(jiān)聽(tīng)到項(xiàng)目銷(xiāo)毀");

• }

• 


}

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