【发布时间】:2014-12-17 17:42:45
【问题描述】:
我正在创建一个简单的 API。我有一个index.php 文件,所有对 API 的请求都会通过。 index.php 处理请求的参数以确定使用哪个控制器和操作。所有这些都包含在try/catch 块中,因此每当我需要为客户端生成错误消息时,我都可以throw new Exception()。这一直按预期工作,但现在我创建了一个处理用户注册和登录的用户类。在注册操作中,我检查从客户端应用程序传递的用户名是否已经存在于数据库中,如果存在,我 throw new Exception('Username already exists!')。但是,这并没有被我的catch 发现。相反,我收到的是正常的Fatal error: uncaught exception 消息。这是我的index.php代码
include_once 'models/UserItem.php';
try {
$enc_request = $_REQUEST['enc_request'];
$app_id = $_REQUEST['app_id'];
if( !isset($applications[$app_id]) ) {
throw new Exception('Application does not exist!');
}
$params = json_decode(trim(mcrypt_decrypt( MCRYPT_RIJNDAEL_256, $applications[$app_id], base64_decode($enc_request), MCRYPT_MODE_ECB )));
if( $params == false || isset($params->controller) == false || isset($params->action) == false ) {
throw new Exception('Request is not valid');
}
$params = (array) $params;
$controller = ucfirst(strtolower($params['controller'])); //User
$action = strtolower($params['action']).'Action'; //registerAction
if( file_exists("controllers/{$controller}.php") ) {
include_once "controllers/{$controller}.php";
} else {
throw new Exception('Controller is invalid.');
}
$controller = new $controller($params);
if( method_exists($controller, $action) === false ) {
throw new Exception('Action is invalid.');
}
$result['data'] = $controller->$action();
$result['success'] = true;
} catch( Exception $e ) {
$result = array();
$result['success'] = false;
$result['errormsg'] = $e->getMessage();
}
发送给请求的参数在一个数组中如:
array(
'controller' => 'user',
'action' => 'register',
'username' => $_POST['username'],
'userpass' => $_POST['userpass']
);
index.php 中的代码然后调用我的user controller 中的registerAction(),即:
public function registerAction() {
$user = new UserItem();
$user->username = $this->_params['username'];
$user->password = $this->_params['userpass'];
$user->user_id = $user->save();
return $user->toArray();
}
然后这段代码在我的UserItem model 中调用save 方法,即:
public function save() {
$db = new Database();
$db->query('select * from users where username = :user');
$db->bind(':user', $this->username);
$r = $db->single();
if ( $r ) {
throw new Exception('Username already exists! Please choose another.');
}
else {
$db->query('insert into users(username, password) values(:username, :password)');
$db->bind(':username', $this->username);
$db->bind(':password', $this->password);
$r = $db->execute();
$user_array = $this->toArray();
if ( !$r ) {
throw new Exception('There was a problem creating your account. Please try again later.');
}
}
return $db->lastInsertId();
}
服务器抛出异常,只是没有被正确捕获。有没有人看到我在 try/catch 方面做错了什么?
谢谢
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