In the configuration there is an error about DispatcherServletPath - spring

Question

Error output, error occurs when the application starts and in the version spring-boot-starter-parent 2.0.5.RELEASE, in 1.5 versions it works fine. In versions 2.0.5 the distribution of the SpringBootServletInitializer file has changed;
Dependency annotations: {}
19:03:05.312 [main] ERROR o.s.b.d.LoggingFailureAnalysisReporter -
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 1 of constructor in
org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration required a bean of type 'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath' that could not be found.
- Bean method 'dispatcherServletRegistration' not loaded because DispatcherServlet Registration found servlet registration bean dispatcherServletRegistration
Action:
Consider revisiting the entries above or defining a bean of type 'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath' in your configuration.
Configuration:
#SpringBootApplication
#Import({
CityContextConfig.class,
CityPersistenceJpaConfig.class,
CityServiceConfig.class,
CityWebConfig.class
})
public class CityApp extends SpringBootServletInitializer {
#Bean
public DispatcherServlet dispatcherServlet() {
return new DispatcherServlet();
}
#Bean
public ServletRegistrationBean dispatcherServletRegistration() {
final ServletRegistrationBean registration = new ServletRegistrationBean<>(dispatcherServlet(), "/api/*");
final Map<String, String> params = new HashMap<String, String>();
params.put("contextClass", "org.springframework.web.context.support.AnnotationConfigWebApplicationContext");
params.put("contextConfigLocation", "org.spring.sec2.spring");
params.put("dispatchOptionsRequest", "true");
registration.setInitParameters(params);
registration.setLoadOnStartup(1);
return registration;
}
//
#Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
return application.initializers(new MyApplicationContextInitializer()).sources(CityApp.class);
}
public static void main(final String... args) {
new SpringApplicationBuilder(CityApp.class).initializers(new MyApplicationContextInitializer()).listeners().run(args);
}
}
The project structure is divided into two modules common and webapp

Answer 1

A bit old, but for the record, you can fix it quickly just adding next bean:
#Bean
public DispatcherServletRegistrationBean dispatcherServletRegistrationBean() {
return new DispatcherServletRegistrationBean(dispatcherServlet(), "/");
}

Answer 2

Servlet context path has been changed in 2.x
here are my recommendation which should work
define servlet context path in application.properties.
server.servlet.path=/ # Path of the main dispatcher servlet.
make sure you have #Configuration notation on these configuration classes CityContextConfig.class, CityPersistenceJpaConfig.class, CityServiceConfig.class, CityWebConfig.class
#SpringBootApplication
public class CityApp {
#Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
return application.initializers(new MyApplicationContextInitializer()).sources(CityApp.class);
}
public static void main(final String... args) {
new SpringApplicationBuilder(CityApp.class).initializers(new MyApplicationContextInitializer()).listeners().run(args);
}
}

Answer 3

I am also searching for the answer. There is a migration guide from spring 1.5.x to 2.0. here Migration Guide
I think our solution is that. But I dont know how to implement their suggestion.