java - 如何在 Spring Boot 应用程序中配置 DispatcherServlet？

Question

在传统的 Spring Web 应用程序中，是否可以覆盖 AbstractDispatcherServletInitializer.createDispatcherServlet，调用 super.createDispatcherServlet，然后在返回的实例上设置以下初始化参数？

setThreadContextInheritable
setThrowExceptionIfNoHandlerFound

如何在 Spring Boot 应用中实现这一点？

Answer 1

您可以定义自己的配置并实现它，如下所示:

@Configuration
public class ServletConfig {

@Bean
public DispatcherServlet dispatcherServlet() {
    DispatcherServlet dispatcherServlet = new DispatcherServlet();
    dispatcherServlet.setThreadContextInheritable(true);
    dispatcherServlet.setThrowExceptionIfNoHandlerFound(true);
    return dispatcherServlet;
}

@Bean
public ServletRegistrationBean dispatcherServletRegistration() {

    ServletRegistrationBean registration = new ServletRegistrationBean(dispatcherServlet());
    registration.setLoadOnStartup(0);
    registration.setName(DispatcherServletAutoConfiguration.DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME);

    return registration;
}