Question

我是Restful API的新手。我正在尝试制作自己的以下互联网教程。对于此API，我使用的是Slim PHP Framework。

我已经创建了db.php（配置文件）：

<?php
class db{
    //Properties
    private $dbhost = 'localhost';
    private $dbuser = 'root';
    private $dbpass = '';
    private $dbname = 'Connect';
    //Connect
    //create MYSQL connect string
    public function connect(){
        $mysql_connect_str = "mysql:host=$this->dbhost;dbname=$this->dbname";
        $dbConnection = new PDO($mysql_connect_str, $this->dbuser, $this->dbpass);
        $dbConnection->setAttribute(PDO::ATTR_ERRMODE, POD::ERRMODE_EXCEPTION);
        return $dbConnection;
    }
}

然后我得到了students.php（我要在其中获取数据的地方）：

<?php
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;

$app = new \Slim\App;

//Get All Students 

$app->get('/api/students', function(Request $request, Response $response){

    $sql = "SELECT * FROM student";

        try{
            $db = new db();
            // connect 
            $db = $db->connect();

            $stmt = $db->query($sql);
            $students = $stmt->fetchAll(PDO::FETCH_OBJ);
            $db = null;
            echo json_encode($students);


        } catch(PDOException $e){
            //e for errors exception handling
             echo '{"error": {"text": '.$e->getMessage().'}';
        }

});

我的index.php：

<?php
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;


require __DIR__ . '/vendor/autoload.php';
require 'src/config/db.php'; 

$app = new \Slim\App;

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

//Customer Routes
require 'src/routes/students.php';

$app->run();

在即时加载我的students.php文件（http://localhost:8080/rest/index.php/api/students）时，显示此错误：

Slim应用程序错误网站发生错误。抱歉给您带来的不便。

当我运行终端并使用此命令时： mysql -u root -p -h本地主机它连接到数据库。因此属性应该是正确的。我仍然不知道问题出在哪里。谢谢大家阅读和回答！

编辑：我在数据库中使用xampp

第二次修改：我删除了db.php文件

<?php
class db{
    //Properties
    private $dbhost = 'localhost';
    private $dbuser = 'root';
    private $dbpass = '';
    private $dbname = 'Connect';
    //Connect
    //create MYSQL connect string
    public function connect(){
        $mysql_connect_str = "mysql:host=$this->dbhost;dbname=$this->dbname";
        $dbConnection = new PDO($mysql_connect_str, $this->dbuser, $this->dbpass);
        //$dbConnection->setAttribute(PDO::ATTR_ERRMODE, POD::ERRMODE_EXCEPTION);
        return $dbConnection;
    }
}

我删除了这一行，现在它显示了我选择的表。但是为什么我必须删除此行？我遵循了教程，并显示了这一行。

连接到数据库时出现Slim Application错误

0 个答案: