Spring Hello World Web App on Intellij -

this first spring application ever. trying display hello,world in browser. followed steps below, wrong dependencies. using intellij 1.2017

• installed zip https://spring.io/guides/gs/maven/#initial
• copied initial directory file system

on intellij:

• import project
• choose ../initial/pom.xml
• next -> selected org.springframework:gs-maven:0.1.0 -> jdk 1.8 -> finish
• run: works fine here.

now want dispaly hello, world! in browser, follwoing steps here: http://projects.spring.io/spring-boot/

• added class samplecontroller
• modified pom.xml follows:

<modelversion>4.0.0</modelversion>     <groupid>org.springframework</groupid>     <artifactid>gs-maven</artifactid>     <packaging>jar</packaging>     <version>0.1.0</version>     <parent>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-parent</artifactid>         <version>1.5.2.release</version>     </parent>     <dependencies>         <dependency>             <groupid>org.springframework.boot</groupid>             <artifactid>spring-boot-starter-web</artifactid>         </dependency>     </dependencies>     <build>         <plugins>             <plugin>                 <groupid>org.apache.maven.plugins</groupid>                 <artifactid>maven-shade-plugin</artifactid>                 <version>2.1</version>                 <executions>                     <execution>                         <phase>package</phase>                         <goals>                             <goal>shade</goal>                         </goals>                         <configuration>                             <transformers>                                 <transformer                                     implementation="org.apache.maven.plugins.shade.resource.manifestresourcetransformer">                                     <mainclass>hello.helloworld</mainclass>                                 </transformer>                             </transformers>                         </configuration>                     </execution>                 </executions>             </plugin>         </plugins>     </build> 

• right click on project, , add framework support -> added spring
• getting: cannot resolve symbole boot, , : cannot resolve symbole enableautoconfiguration

i not have experience on maven, , dependencies, hence trying follow instructions literally. wrong in steps?

explaining comment – mohsan shakir

1. click on "view" , enable "tool buttons".
2. on right panel click on "maven projects"
3. add (by click on +) project (find pom file).
4. click leftmost button on maven panel "reimport all..."