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235 lines
8.5 KiB
PHP
235 lines
8.5 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace Think\Controller;
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use Think\Controller;
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use Think\App;
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/**
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* ThinkPHP REST控制器类
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*/
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class RestController extends Controller {
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// 当前请求类型
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protected $_method = '';
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// 当前请求的资源类型
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protected $_type = '';
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// REST允许的请求类型列表
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protected $allowMethod = array('get','post','put','delete');
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// REST默认请求类型
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protected $defaultMethod = 'get';
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// REST允许请求的资源类型列表
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protected $allowType = array('html','xml','json','rss');
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// 默认的资源类型
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protected $defaultType = 'html';
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// REST允许输出的资源类型列表
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protected $allowOutputType= array(
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'xml' => 'application/xml',
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'json' => 'application/json',
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'html' => 'text/html',
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);
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/**
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* 架构函数
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* @access public
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*/
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public function __construct() {
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// 资源类型检测
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if(''==__EXT__) { // 自动检测资源类型
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$this->_type = $this->getAcceptType();
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}elseif(!in_array(__EXT__,$this->allowType)) {
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// 资源类型非法 则用默认资源类型访问
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$this->_type = $this->defaultType;
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}else{
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$this->_type = __EXT__ ;
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}
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// 请求方式检测
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$method = strtolower(REQUEST_METHOD);
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if(!in_array($method,$this->allowMethod)) {
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// 请求方式非法 则用默认请求方法
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$method = $this->defaultMethod;
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}
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$this->_method = $method;
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parent::__construct();
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}
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/**
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* 魔术方法 有不存在的操作的时候执行
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* @access public
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* @param string $method 方法名
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* @param array $args 参数
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* @return mixed
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*/
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public function __call($method,$args) {
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if( 0 === strcasecmp($method,ACTION_NAME.C('ACTION_SUFFIX'))) {
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if(method_exists($this,$method.'_'.$this->_method.'_'.$this->_type)) { // RESTFul方法支持
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$fun = $method.'_'.$this->_method.'_'.$this->_type;
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App::invokeAction($this,$fun);
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}elseif($this->_method == $this->defaultMethod && method_exists($this,$method.'_'.$this->_type) ){
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$fun = $method.'_'.$this->_type;
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App::invokeAction($this,$fun);
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}elseif($this->_type == $this->defaultType && method_exists($this,$method.'_'.$this->_method) ){
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$fun = $method.'_'.$this->_method;
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App::invokeAction($this,$fun);
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}elseif(method_exists($this,'_empty')) {
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// 如果定义了_empty操作 则调用
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$this->_empty($method,$args);
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}elseif(file_exists_case($this->view->parseTemplate())){
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// 检查是否存在默认模版 如果有直接输出模版
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$this->display();
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}else{
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E(L('_ERROR_ACTION_').':'.ACTION_NAME);
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}
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}
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}
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/**
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* 获取当前请求的Accept头信息
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* @return string
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*/
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protected function getAcceptType(){
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$type = array(
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'xml' => 'application/xml,text/xml,application/x-xml',
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'json' => 'application/json,text/x-json,application/jsonrequest,text/json',
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'js' => 'text/javascript,application/javascript,application/x-javascript',
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'css' => 'text/css',
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'rss' => 'application/rss+xml',
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'yaml' => 'application/x-yaml,text/yaml',
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'atom' => 'application/atom+xml',
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'pdf' => 'application/pdf',
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'text' => 'text/plain',
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'png' => 'image/png',
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'jpg' => 'image/jpg,image/jpeg,image/pjpeg',
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'gif' => 'image/gif',
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'csv' => 'text/csv',
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'html' => 'text/html,application/xhtml+xml,*/*'
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);
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foreach($type as $key=>$val){
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$array = explode(',',$val);
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foreach($array as $k=>$v){
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if(stristr($_SERVER['HTTP_ACCEPT'], $v)) {
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return $key;
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}
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}
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}
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return false;
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}
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// 发送Http状态信息
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protected function sendHttpStatus($code) {
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static $_status = array(
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// Informational 1xx
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100 => 'Continue',
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101 => 'Switching Protocols',
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// Success 2xx
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200 => 'OK',
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201 => 'Created',
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202 => 'Accepted',
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203 => 'Non-Authoritative Information',
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204 => 'No Content',
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205 => 'Reset Content',
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206 => 'Partial Content',
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// Redirection 3xx
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300 => 'Multiple Choices',
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301 => 'Moved Permanently',
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302 => 'Moved Temporarily ', // 1.1
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303 => 'See Other',
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304 => 'Not Modified',
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305 => 'Use Proxy',
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// 306 is deprecated but reserved
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307 => 'Temporary Redirect',
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// Client Error 4xx
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400 => 'Bad Request',
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401 => 'Unauthorized',
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402 => 'Payment Required',
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403 => 'Forbidden',
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404 => 'Not Found',
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405 => 'Method Not Allowed',
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406 => 'Not Acceptable',
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407 => 'Proxy Authentication Required',
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408 => 'Request Timeout',
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409 => 'Conflict',
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410 => 'Gone',
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411 => 'Length Required',
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412 => 'Precondition Failed',
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413 => 'Request Entity Too Large',
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414 => 'Request-URI Too Long',
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415 => 'Unsupported Media Type',
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416 => 'Requested Range Not Satisfiable',
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417 => 'Expectation Failed',
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// Server Error 5xx
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500 => 'Internal Server Error',
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501 => 'Not Implemented',
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502 => 'Bad Gateway',
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503 => 'Service Unavailable',
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504 => 'Gateway Timeout',
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505 => 'HTTP Version Not Supported',
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509 => 'Bandwidth Limit Exceeded'
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);
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if(isset($_status[$code])) {
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header('HTTP/1.1 '.$code.' '.$_status[$code]);
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// 确保FastCGI模式下正常
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header('Status:'.$code.' '.$_status[$code]);
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}
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}
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/**
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* 编码数据
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* @access protected
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* @param mixed $data 要返回的数据
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* @param String $type 返回类型 JSON XML
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* @return string
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*/
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protected function encodeData($data,$type='') {
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if(empty($data)) return '';
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if('json' == $type) {
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// 返回JSON数据格式到客户端 包含状态信息
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$data = json_encode($data);
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}elseif('xml' == $type){
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// 返回xml格式数据
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$data = xml_encode($data);
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}elseif('php'==$type){
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$data = serialize($data);
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}// 默认直接输出
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$this->setContentType($type);
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//header('Content-Length: ' . strlen($data));
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return $data;
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}
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/**
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* 设置页面输出的CONTENT_TYPE和编码
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* @access public
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* @param string $type content_type 类型对应的扩展名
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* @param string $charset 页面输出编码
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* @return void
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*/
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public function setContentType($type, $charset=''){
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if(headers_sent()) return;
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if(empty($charset)) $charset = C('DEFAULT_CHARSET');
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$type = strtolower($type);
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if(isset($this->allowOutputType[$type])) //过滤content_type
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header('Content-Type: '.$this->allowOutputType[$type].'; charset='.$charset);
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}
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/**
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* 输出返回数据
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* @access protected
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* @param mixed $data 要返回的数据
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* @param String $type 返回类型 JSON XML
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* @param integer $code HTTP状态
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* @return void
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*/
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protected function response($data,$type='',$code=200) {
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$this->sendHttpStatus($code);
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exit($this->encodeData($data,strtolower($type)));
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}
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}
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