In this tutorials explain the following annotations
RestController : is used for creating a restful API services.
RequestMapping: is used for specify following request GET, PUT, POST, DELETE, etc.
Cross-origin : is an important annotation which used to calling restful API request from the front-end application
like Anqular or React or vue js or other.
Create the new Controller as
TestController
package com.springschool.firstapp.controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@CrossOrigin
@RequestMapping("api/v1/test")
public class TestController {
@PostMapping
public void getMyApp()
{
String myApp = "This my First Application";
System.out.println(myApp);
}
}