只看到白色标签错误页面 - Spring boot + hibernate

Question

没有映射到我的请求[/]引用方法allHotels（） 以下是我的应用程序和控制器类。

Application.class

@SpringBootApplication(scanBasePackages = {"comexam.example"}) 
@EnableAutoConfiguration 
public class Application 
{ 
public static void main(String[] args) throws ParseException 
{ 
    SpringApplication.run(Application.class, args); 
} 

}

HotelController.class

@RestController 
public class HotelController 
{ 
@Autowired HotelService hotelService; 

@RequestMapping(value = "/hotels/", method = RequestMethod.GET) 
public ResponseEntity<List<Hotel>> allHotels() { 
    List<Hotel> hotels = hotelService.getAllHotels(); 
    if (hotels.isEmpty()) { 
     return new ResponseEntity<List<Hotel>>(HttpStatus.NO_CONTENT);//You many decide to return HttpStatus.NOT_FOUND 
    } 
    return new ResponseEntity<List<Hotel>>(hotels, HttpStatus.OK); 
} 

}

以下是错误堆栈i“的米获得。

2017-04-19 17:17:23.729 INFO 5808 --- [   main] o.apache.catalina.core.StandardService : Starting service Tomcat 
2017-04-19 17:17:23.730 INFO 5808 --- [   main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.36 
2017-04-19 17:17:23.836 INFO 5808 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring embedded WebApplicationContext 
2017-04-19 17:17:23.836 INFO 5808 --- [ost-startStop-1] o.s.web.context.ContextLoader   : Root WebApplicationContext: initialization completed in 1646 ms 
2017-04-19 17:17:24.077 INFO 5808 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/] 
2017-04-19 17:17:24.080 INFO 5808 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 
2017-04-19 17:17:24.081 INFO 5808 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 
2017-04-19 17:17:24.081 INFO 5808 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 
2017-04-19 17:17:24.081 INFO 5808 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 
2017-04-19 17:17:24.277 INFO 5808 --- [   main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@382db087: startup date [Wed Apr 19 17:17:22 IST 2017]; root of context hierarchy 
2017-04-19 17:17:24.334 INFO 5808 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hotels/],methods=[GET]}" onto public org.springframework.http.ResponseEntity<java.util.List<comexam.example.model.Hotel>> comexam.example.controller.HotelController.allHotels() 
2017-04-19 17:17:24.337 INFO 5808 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 
2017-04-19 17:17:24.338 INFO 5808 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 
2017-04-19 17:17:24.365 INFO 5808 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-19 17:17:24.365 INFO 5808 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-19 17:17:24.402 INFO 5808 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-19 17:17:24.497 INFO 5808 --- [   main] o.s.j.e.a.AnnotationMBeanExporter  : Registering beans for JMX exposure on startup 
2017-04-19 17:17:24.582 INFO 5808 --- [   main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 

Answer 1

您已指定程序包进行扫描，以便您的控制器类必须位于“it.exam.training”程序包内的某个位置。

@SpringBootApplication(scanBasePackages = {"it.exam.training"}) 

要解决此问题，请将HotelController类移至例如“it.exam.training.controller”。

Answer 2

将您的Applicaiton.class移动到it.example.training包和您的控制器到it.example.training.controller再试一次。