php框架slim使用（2）- 路由中使用控制器类

常规路由写法：

$app->get('/hello/{name}', function (Request $request, Response $response) {
    $name = $request->getAttribute('name');
    $response->getBody()->write("Hello, $name");

    return $response;
});

假设项目名称和文件夹叫t3

但是我们通常会把程序逻辑写在控制器类中。
首先，修改composer.json
让我们有个放自己程序的类文件的地方。

"autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/",
            "app\\": "src/app/"
        }
}

然后在cmd下，
cd t3
composer install

然后
建立目录，src已存在，建立src\app\control
然后在src\app\control下建立Test.php

<?php

namespace app\control;
// use \Psr\Http\Message\ServerRequestInterface as Request;
// use \Psr\Http\Message\ResponseInterface as Response;
class Test {
   
 public function a1( $req, $res, $args) {
      // 获取 root URI
      echo '$uri = $req->getUri()';
      echo "<br>";
      echo $req->getUri();
      echo "<hr>";
      
      $uri = $req->getUri();
      
      echo '$uri->getScheme()';
      echo "<br>";
      echo $uri->getScheme();
      echo "<br>";
      
      echo '$uri->getAuthority()';
      echo "<br>";
      echo $uri->getAuthority();
      echo "<br>";
      
      echo '$uri->getUserInfo()';
      echo "<br>";
      echo $uri->getUserInfo();
      echo "<br>";
      
      echo '$uri->getHost()';
      echo "<br>";
      echo $uri->getHost();
      echo "<br>";
      
      echo '$uri->getPort()';
      echo "<br>";
      echo $uri->getPort();
      echo "<br>";
      
      echo '$uri->getPath()';
      echo "<br>";
      echo $uri->getPath();
      echo "<br>";
      
      echo '$uri->getBasePath()';
      echo "<br>";
      echo $uri->getBasePath();
      echo "<br>";
      
      echo '$uri->getQuery()';
      echo "<br>";
      echo $uri->getQuery();
      echo "<br>";
      
      echo '$uri->getFragment()';
      echo "<br>";
      echo $uri->getFragment();
      echo "<br>";
      
      echo '$uri->getBaseUrl()';
      echo "<br>";
      echo $uri->getBaseUrl();
      echo "<br>";
      
        return $res;
   }
}

修改 src/routs.php

<?php
$app->get('/home/s',  '\app\control\Test:a1' );

然后，打开浏览器
http://www.t3.com/home/s