使用TP5创建一个REST API

原文在这里 ： http://hmw.iteye.com/blog/1190827

tp自带的api,get请求接口

/**
     * 显示资源列表
     *
     * @return \think\Response
     */
    public function index(Request $request)
    {
//        $request_method = strtolower($_SERVER['REQUEST_METHOD']);
//        $return_onj = new RestRequest();
//        $data = db('ShopGoods')->select();

        $data = RestUtils::processRequest();
        $method = $data->getMethod();
//        print_r($method);

        switch($method){
            case 'get':
                $user_list = db('ShopGoods')->limit(2)->select();
//                print_r($user_list);
                if($data->getHttpAccept() == 'json'){
                    RestUtils::sendResponse(200, json_encode($user_list), 'application/json');
                }else if ($data->getHttpAccept() == 'xml') {
                    // using the XML_SERIALIZER Pear Package
                    $options = array
                    (
                        'indent' => '     ',
                        'addDecl' => false,
//                        'rootName' => $fc->getAction(),
                        XML_SERIALIZER_OPTION_RETURN_RESULT => true
                    );
                    $serializer = new XML_Serializer($options);

                    RestUtils::sendResponse(200, $serializer->serialize($user_list), 'application/xml');
                }
                break;
            case 'post':
                $user = new User();
                $user->setFirstName($data->getData()->first_name);  // just for example, this should be done cleaner
                // and so on...
                $user->save();
                break;
            // etc, etc, etc...
        }

    }

2、　　实现接口请求处理和请求处理的方法‘’

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2017/6/26
 * Time: 10:18
 */
namespace app\api\controller;
use app\api\controller\RestRequest;

//简单的class来存储request的一些信息（RestRequest），和一个提供几个静态方法的class来处理请求和响应
class RestUtils
{
    //根据请求的内容类型来处理JSON或者XML，但是让我们现在简单一点。那么，我们处理请求的方法将会类似于这样
    public static function processRequest(){
        // get our verb 获取动作
        $request_method = strtolower($_SERVER['REQUEST_METHOD']);
        $return_obj     = new RestRequest();
        // we'll store our data here 在这里存储请求数据
        $data           = array();
        switch ($request_method){
            // gets are easy...
            case 'get':
                $data = $_GET;
                break;
            // so are posts
            case 'post':
                $data = $_POST;
                break;
            // here's the tricky bit...
            case 'put':
                // basically, we read a string from PHP's special input location,
                // and then parse it out into an array via parse_str... per the PHP docs:
                // Parses str  as if it were the query string passed via a URL and sets
                // variables in the current scope.
                parse_str(file_get_contents('php://input'), $put_vars);
                $data = $put_vars;
                break;
            case 'delete':

                break;
        }

        // store the method
        $return_obj->setMethod($request_method);

        // set the raw data, so we can access it if needed (there may be
        // other pieces to your requests)
        $return_obj->setRequestVars($data);

        if(isset($data['data'])){
            // translate the JSON to an Object for use however you want
            $return_obj->setData(json_decode($data['data']));
        }
        return $return_obj;
    }

    public static function sendResponse($status = 200, $body = '', $content_type = 'text/html'){
        $status_header = 'HTTP/1.1 ' . $status . ' ' . RestUtils::getStatusCodeMessage($status);
        // set the status
        header($status_header);
        // set the content type
        header('Content-type: ' . $content_type);

        // pages with body are easy
        if($body != ''){
            // send the body
            echo $body;
            exit;
        }
        // we need to create the body if none is passed
        else
        {
            // create some body messages
            $message = '';

            // this is purely optional, but makes the pages a little nicer to read
            // for your users.  Since you won't likely send a lot of different status codes,
            // this also shouldn't be too ponderous to maintain
            switch($status) {
                case 401:
                    $message = 'You must be authorized to view this page.';
                    break;
                case 200:
                    $message = 'You must be authorized to view this page. 200';
                    break;
                case 404:
                    $message = 'The requested URL ' . $_SERVER['REQUEST_URI'] . ' was not found.';
                    break;
                case 500:
                    $message = 'The server encountered an error processing your request.';
                    break;
                case 501:
                    $message = 'The requested method is not implemented.';
                    break;
            }

            // servers don't always have a signature turned on (this is an apache directive "ServerSignature On")
            $signature = ($_SERVER['SERVER_SIGNATURE'] == '') ? $_SERVER['SERVER_SOFTWARE'] . ' Server at ' . $_SERVER['SERVER_NAME'] . ' Port ' . $_SERVER['SERVER_PORT'] : $_SERVER['SERVER_SIGNATURE'];

            // this should be templatized in a real-world solution
            $body = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
                    <html>
                        <head>
                            <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
                            <title>' . $status . ' ' . RestUtils::getStatusCodeMessage($status) . '</title>
                        </head>
                        <body>
                            <h1>' . RestUtils::getStatusCodeMessage($status) . '</h1>
                            ' . $message . '  

                            <hr />
                            <address>' . $signature . '</address>
                        </body>
                    </html>';

            echo $body;
            exit;
        }
    }

    public static function getStatusCodeMessage($status){
        // these could be stored in a .ini file and loaded
        // via parse_ini_file()... however, this will suffice
        // for an example
        // 这些应该被存储在一个.ini的文件中，然后通过parse_ini_file()函数来解析出来，然而这样也足够了，比如：
        $codes = Array(
            100 => 'Continue',
            101 => 'Switching Protocols',
            200 => 'OK',
            201 => 'Created',
            202 => 'Accepted',
            203 => 'Non-Authoritative Information',
            204 => 'No Content',
            205 => 'Reset Content',
            206 => 'Partial Content',
            300 => 'Multiple Choices',
            301 => 'Moved Permanently',
            302 => 'Found',
            303 => 'See Other',
            304 => 'Not Modified',
            305 => 'Use Proxy',
            306 => '(Unused)',
            307 => 'Temporary Redirect',
            400 => 'Bad Request',
            401 => 'Unauthorized',
            402 => 'Payment Required',
            403 => 'Forbidden',
            404 => 'Not Found',
            405 => 'Method Not Allowed',
            406 => 'Not Acceptable',
            407 => 'Proxy Authentication Required',
            408 => 'Request Timeout',
            409 => 'Conflict',
            410 => 'Gone',
            411 => 'Length Required',
            412 => 'Precondition Failed',
            413 => 'Request Entity Too Large',
            414 => 'Request-URI Too Long',
            415 => 'Unsupported Media Type',
            416 => 'Requested Range Not Satisfiable',
            417 => 'Expectation Failed',
            500 => 'Internal Server Error',
            501 => 'Not Implemented',
            502 => 'Bad Gateway',
            503 => 'Service Unavailable',
            504 => 'Gateway Timeout',
            505 => 'HTTP Version Not Supported'
        );

        return (isset($codes[$status])) ? $codes[$status] : '';
    }
}

　　

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2017/6/26
 * Time: 10:18
 */
namespace app\api\controller;
use app\api\controller\RestUtils;

//简单的class来存储request的一些信息（RestRequest），和一个提供几个静态方法的class来处理请求和响应

class RestRequest
{
    private $request_vars;
    private $data;
    private $http_accept;
    private $method;

    public function __construct()
    {
        $this->request_vars = array();
        $this->data = '';
        $this->http_accept = 'json';//(strpos($_SERVER['HTTP_ACCEPT'],'json')) ? 'json' : 'xml';
        $this->method = 'get';
    }

    public function setData($data){
        $this->data = $data;
    }

    public function setMethod($method){
        $this->method = $method;
    }

    public function setRequestVars($request_vars){
        $this->request_vars = $request_vars;
    }

    public function getData(){
        return $this->data;
    }

    public function getMethod(){
        return $this->method;
    }

    public function getHttpAccept(){
        return $this->http_accept;
    }

    public function getRequestVars(){
        return $this->request_vars;
    }
}