Getting "No message available" error with Spring Boot + REST application

Question

I have created demo Spring Boot project and implemented Restful services as shown here

@RestController public class GreetingsController {     @RequestMapping(value="/api/greetings", method=RequestMethod.GET, produces=MediaType.APPLICATION_JSON_VALUE)     public ResponseEntity<String> getGreetings(){         return new ResponseEntity<String>("Hello World", HttpStatus.OK);     } } 

When I tried to invoke the service with Postman tool with url "http://localhost:8080/api/greetings" as request method GET, I am getting below error message

{   "timestamp": 1449495844177,   "status": 404,   "error": "Not Found",   "message": "No message available",   "path": "/api/greetings" } 

Per Spring Boot application, I don't have to configure the Spring Dispatcher servlet in web.xml.

Can someone help me to find out the missing point here?

Answer 1

You're probably missing @SpringBootApplication:

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;  @SpringBootApplication public class Application {      public static void main(String[] args) throws Exception {         SpringApplication.run(Application.class, args);     } } 

@SpringBootApplication includes @ComponentScan which scans the package it's in and all children packages. Your controller may not be in any of them.