Not able to run the starter guide code of Building Spring Boot Rest Service - spring

Question

I am trying to build rest service using Spring Boot. I am learning to implement it using the this Spring's guide. I have built the application using STS as a Maven application and the code is exact replica of the guide and when I try to run the application I get the below connection error
I also tried to run the github code for the same guide provided by Spring and that code also gives same the error as above. I am new to Spring Boot and any help would be appreciated.
Below is my code
App.java
package Greetings.Web_Services;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class App
{
public static void main( String[] args )
{
System.out.println("App Started");
SpringApplication.run(App.class, args);
}
}
Greetings.java
package Greetings.Web_Services;
public class Greetings {
private final long id;
private final String content;
public Greetings(long id, String content){
this.id = id;
this.content = content;
}
public long getId(){
return id;
}
public String getContent(){
return content;
}
}
GreetingsController.java
package Greetings.Web_Services;
import java.util.concurrent.atomic.AtomicLong;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class GreetingsController {
private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();
#RequestMapping("/greeting")
public Greetings greeting(#RequestParam(value="name", defaultValue="World") String name) {
return new Greetings(counter.incrementAndGet(),
String.format(template, name));
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework</groupId>
<artifactId>gs-rest-service</artifactId>
<version>0.1.0</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
GitHub link for the project of above code
Thanks!!

Answer 1

The code in the guide is correct and it was not working earlier for which I had also raised an issue in the GitHub community of the guide. Later when I updated the STS and restarted, it seems to work now. One of the modifier in the community also recommended the same after I explained the scenario. Hope this saves someone's time.