17. Ant で Spring の WAR を作る

// src/jp/co/example/shop/web/HelloController.java
// このプロジェクトのどこにも main メソッドはない。呼び出すのは Tomcat と Spring
package jp.co.example.shop.web;

import jakarta.servlet.http.HttpServletRequest;

import jp.co.example.shop.service.GreetingService;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    private final GreetingService greetingService;

    public HelloController(GreetingService greetingService) {
        this.greetingService = greetingService;
    }

    @GetMapping("/hello")
    public String hello(@RequestParam(name = "name", defaultValue = "world") String name) {
        return greetingService.greet(name) + "\n";
    }

    // URL のどの部分を誰が決めたかを返す
    @GetMapping("/where")
    public String where(HttpServletRequest request) {
        return "contextPath=" + request.getContextPath()
                + " servletPath=" + request.getServletPath()
                + " pathInfo=" + request.getPathInfo()
                + " thread=" + Thread.currentThread().getName() + "\n";
    }
}

// Tomcat 11.0.26 に shop.war を置いて呼んだ結果(ホスト側のポート 18391 を、コンテナの中の 8080 につないでいる)
//   $ curl http://localhost:18391/shop/app/where
//   contextPath=/shop servletPath=/app pathInfo=/where thread=http-nio-8080-exec-4
//   /shop = WAR のファイル名、/app = web.xml の url-pattern、/where = @GetMapping