Spring Java

java -jar spring-tool-suite-4-4.5.1.RELEASE-e4.14.0-win32.win32.x86_64.self-extracting.jar
C:\Program Files\Java\jdk1.8.0_211\bin\javaw.exe

File → New → Spring Starter Project → Next → Check the following to use web features and hot deploy

  1. Developer Tools→Spring Boot DevTools
  2. Web→Spring Web → Finish



・ ・ ・
 <!-- web -->
 <!--Hot deploy-->
・ ・ ・


package com.example.demo;
import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

public class IndexController {
	private static final Logger log = LoggerFactory.getLogger( IndexController.class );

    private String index() {
        return "index";

    @RequestMapping(value="/", method=RequestMethod.GET)
    private Map<String, Object> index( @RequestParam("id") Integer id) {
        Map<String, Object> map = new HashMap<>();
        map.put("id", id);
        return map;

    @RequestMapping(value="/items/{id}", method=RequestMethod.GET)
    private Item get(@PathVariable int id) {
    	return new Item(id);

    @RequestMapping(value="/items", method=RequestMethod.POST)
    private void post(@RequestBody String body) {
    	log.info("post, " + body);

    @RequestMapping(value="/items/{id}", method=RequestMethod.PUT)
    private void put(@PathVariable int id, @RequestBody String body) {
    	log.info("put, " + id + ", " + body);

    @RequestMapping(value="/items/{id}", method=RequestMethod.DELETE)
    private void delete(@PathVariable("id") int id) {
    	log.info("delete, " + id);

    public static class Item {
        private int id;

    	Item (int id) {

    	public int getId() {
    		return id;

    	public void setId(int id) {
    		this.id = id;

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