Spring Boot Example.

Create Spring Boot Example.
There are three way creating spring boot

1.       Create project from spring.io
       http://start.spring.io/
2.      Install Spring from the command line
      c:\> spring init -d=web my-app
3.  Project Snapshot
4. DemoApplication Class
   package com.example.springBootExample;

import java.util.Arrays;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;

import com.abc.foo.User;

@ComponentScan({"com.abc.foo","com.example.springBootExample"})
@SpringBootApplication
public class DemoApplication {
@Bean
public User user(){
return new User("Chandra","Gauro");
}

public static void main(String[] args) {
ApplicationContext ctx=SpringApplication.run(DemoApplication.class, args);
String []names=ctx.getBeanDefinitionNames();
Arrays.sort(names);
System.out.println("===============");
for(String name:names){
System.out.println(name);
}
System.out.println("=========******======");
System.out.println(ctx.getBean("user").toString());
}
}

5. PageController Class
package com.example.springBootExample;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.abc.foo.NotificationService;

@RestController
public class PageController {
//using default
//@Autowired
private NotificationService notificationService;

//using setter
// @Autowired
// public void setNotificationService(NotificationService notificationService) {
// this.notificationService = notificationService;
// }
//using Constructor
@Autowired
public PageController(NotificationService notificationService) {
this.notificationService = notificationService;
}

@RequestMapping("/")
public String home(){
return notificationService.toString();
//return "Hello, Spring Boot  !";
}

}


6.NotificationService class


package com.abc.foo;

import org.springframework.stereotype.Service;


@Service
public class NotificationService {

public NotificationService() {
// TODO Auto-generated constructor stub
}
public void send(){
}
public void sendAsync(){
}
@Override
public String toString(){
return "NotificationService from CKG from constructor()";
}
}

7. User Class

package com.abc.foo;

public class User {
private String firstName;
private String lastNmae;
private String emailAddress;
public User(String firstName, String lastNmae) {

this.firstName = firstName;
this.lastNmae = lastNmae;
}

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getLastNmae() {
return lastNmae;
}

public void setLastNmae(String lastNmae) {
this.lastNmae = lastNmae;
}

public String getEmailAddress() {
return emailAddress;
}

public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}

@Override
public String toString() {
return "User [firstName=" + firstName + ", lastNmae=" + lastNmae + ", emailAddress=" + emailAddress + "]";
}

}

8. Change port 
server.port = 9009








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