路由定义 conf/routes
GET    /                 controllers.HomeController.hello
GET    /hello            controllers.HomeController.hello

Controller
HomeController

package controllers;
import play.mvc.*;
import java.time.LocalDateTime;
public class HomeController extends Controller {
    public Result hello() {
        return ok("hello,"+ LocalDateTime.now());
    }
}
   
启动运行 
sbt run
-Dhttp.port=9100 

http://127.0.0.1:9000
http://127.0.0.1:9000/hello

http://127.0.0.1:9000/xxx
xxx 路由未注册 ，会显示所有路由信息


idea 里 导入运行
run  / edit configurations 
添加一个 sbt task
tasks 里 输入 run
use sbt shell  不要勾选



动态获取参数
http://127.0.0.1:9000/hello2
/app/controllers/HelloController.scala


package controllers

import play.api.mvc._
import java.time.LocalDateTime
import javax.inject._

@Singleton
class HelloController @Inject()(cc: ControllerComponents) extends AbstractController(cc) {
  def hello() = Action { implicit request: Request[AnyContent] =>
    var name = request.getQueryString("name").getOrElse(null);
    if(name==null){
      name = "scala"
    }
    Ok("hello "+name+","+LocalDateTime.now())
  }
}




完整代码
https://gitee.com/dyyx/hellocode/tree/master/demo/scala/play-rest-hello