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SpringBoot注册Servlet的三种方式     所属分类 springboot 浏览量 219
ServletRegistrationBean 注册
Servlet组件扫描
ServletContextInitializer 动态注册


SpringBoot 提供ServletRegistrationBean, FilterRegistrationBean, ServletListenerRegistrationBean 分别注册 Servlet, Filter, Listener @Bean public ServletRegistrationBean registerHelloServlet() { ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new HelloServlet(), "/hello"); servletRegistrationBean.addInitParameter("name", "dyyx"); return servletRegistrationBean; }
Servlet3.0 之前,Servlet Filter Listener 在 web.xml 中配置 Servlet3.0之后 可基于代码或注解配置 @WebServlet @WebFilter @WebListener @WebServlet(name = "helloServlet2", urlPatterns = "/hello2", asyncSupported = true, initParams = {@WebInitParam(name = "name", value = "dyyx"),}) public class HelloServlet2 extends HttpServlet { 注意!!! 使用内嵌容器 ,需要开启 Servlet 组件扫描 @ServletComponentScan @SpringBootApplication @ServletComponentScan public class App {
org.springframework.boot.web.servlet.ServletContextInitializer @Component public class ServletInitBean implements ServletContextInitializer{ @Override public void onStartup(ServletContext servletContext) { ServletRegistration initServlet = servletContext .addServlet("helloServlet3", HelloServlet3.class); initServlet.addMapping("/hello3"); initServlet.setInitParameter("name", "dyyx"); } }
完整代码 https://gitee.com/dyyx/demos/tree/master/springboot_servlet

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