Question

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

setThreadContextInheritable
setThrowExceptionIfNoHandlerFound

如何在Spring Boot应用程序中实现此目的？

Answer 1

您可以定义自己的配置并实现此配置，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;
}

}

Answer 2

对于试图解决此问题的任何人，我们都是通过以下方式解决的：

@Configuration
public class ServletConfig {

  @Autowired
  RequestContextFilter filter;

  @Autowired
  DispatcherServlet servlet;

  @PostConstruct
  public void init() {
    // Normal mode
    filter.setThreadContextInheritable(true);

    // Debug mode
    servlet.setThreadContextInheritable(true);

    servlet.setThrowExceptionIfNoHandlerFound(true);
  }
}

由于某些原因，当以非调试模式运行我们的Spring Boot应用程序时，Spring的RequestContextFilter会覆盖DispatcherServlet ThreadContextInheritable属性。在调试模式下，设置servlet就足够了。

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

2 个答案: