创建springboot demo

pom.xml

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+<?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-spring-boot</artifactId>
+    <version>0.1.0</version>
+    
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.0.5.RELEASE</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </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>
+
+</project>

src/main/java/hello/Application.java

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+package hello;
+
+import java.util.Arrays;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+
+@SpringBootApplication
+public class Application {
+    
+    public static void main(String[] args) {
+        ApplicationContext ctx = SpringApplication.run(Application.class, args);
+        
+        System.out.println("Let's inspect the beans provided by Spring Boot:");
+        
+        String[] beanNames = ctx.getBeanDefinitionNames();
+        Arrays.sort(beanNames);
+        for (String beanName : beanNames) {
+            System.out.println(beanName);
+        }
+    }
+
+}

src/main/java/hello/HelloController.java

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+package hello;
+
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@RestController
+public class HelloController {
+    
+    @RequestMapping("/")
+    public String index() {
+        return "Greeting for springboot, Hi xadocker.....";
+    }
+    
+}