package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootSimpleApplication {
 public static void main(String[] args) {
  SpringApplication.run(SpringBootSimpleApplication.class, args);
 }
}

<?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>com.example</groupId>
 <artifactId>Spring-boot-simple</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>jar</packaging>
 <name>Spring-boot-simple</name>
 <description>Demo project for Spring Boot</description>
 <parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>1.5.2.RELEASE</version>
  <relativePath/> <!-- lookup parent from repository -->
 </parent>
 <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  <Java.version>1.8</java.version>
 </properties>
 <dependencies>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-test</artifactId>
   <scope>test</scope>
  </dependency>
 </dependencies>
 <build>
  <plugins>
   <plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
   </plugin>
  </plugins>
 </build>
</project>

package com.example.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/hello")
public class HelloWorldController {
 @RequestMapping
 public String hello() {
  return "Hello Spring-Boot";
 }
 @RequestMapping("/info")
 public Map<String, String> getInfo(@RequestParam String name) {
  Map<String, String> map = new HashMap<String,String>();
  map.put("name", name);
  return map;
 }
 @RequestMapping("/list")
 public List<Map<String, String>> getList() {
  List<Map<String, String>> list = new ArrayList<Map<String, String>>();
  Map<String, String> map = null;
  for (int i = 1; i <= 5; i++) {
   map = new HashMap<>();
   map.put("name-"+i, "spring-boot-"+i);
   list.add(map);
  }
  return list;
 }
}