求助~!文章操作這部分，_handleArticleList()，使用 return時(shí)，response 的 body 部分為空，用print_r()能顯示，代碼照著視頻中的敲的。User部分的注冊(cè)就沒問題，得到的response 的 body中有注冊(cè)用戶信息。謝謝！

getList

```php

public function getList($user_id,$page=1,$size=10){

????????if($size > 100) {

????????????throw new Exception('Page limited 100', ErrorCode::PAGE_LIMIT_EXCEED);

????????}

????????$sql = 'SELECT * FROM `article` WHERE `user_id`=:user_id LIMIT :limit, :offset';

????????$limit = ($page-1)*$size;

????????$limit = $limit < 0 ? 0 : $limit;

????????$stmt = $this->_db->prepare($sql);

????????$stmt->bindValue(':user_id', $user_id);

????????$stmt->bindValue(':limit', $limit);

????????$stmt->bindValue(':offset', $size);

????????$stmt->execute();

????????$data = $stmt->fetchAll(PDO::FETCH_ASSOC);

??????? //print_r($data);

????????return $data;

????

????}

```

_handleArticleList()

```php

????private function _handleArticleList(){

????????$user = $this->_userLogin($_SERVER['PHP_AUTH_USER'],$_SERVER['PHP_AUTH_PW']);

????????$page = isset($_GET['page']) ? $_GET['page'] : 1;

????????$size = isset($_GET['size']) ? $_GET['size'] : 10;

????????if($size > 100){

????????????throw new Exception("Page is too large", 400);

????????}

????????return $this->_article->getList($user['user_id'], $page, $size);

????}

????private function _handleArticleView(){

????????

????}

????private function _userLogin($PHP_AUTH_USER, $PHP_AUTH_PW){

????????try{

????????????return $this->_user->login($PHP_AUTH_USER, $PHP_AUTH_PW);

????????}catch(Exception $e){

????????????if(in_array($e->getCode(),

????????????????[

????????????????????ErrorCode::USERNAME_CANNOT_EMPTY,

????????????????????ErrorCode::PASSWORD_CANNOT_EMPTY,

????????????????????ErrorCode::USERNAME_OR_PASSWORD_INVALID

????????????????])) {

????????????????????throw new Exception($e->getMessage(), 400);

????????????}

????????????throw new Exception($e->getMessage(), 500);

????????}

????}

```