php 微信企业号回调模式开发

根据上篇http://blog.csdn.net/u014454539/article/details/44626123的介绍，我们对微信企业号基本配置，开发人员管理、应用管理等，有了基本的了解。在开发过程中，我们可以申请开发者测试号，进行开发，了解企业号的接口与作用。

今天我们接着介绍微信企业号回调模式的开发，这里的回调模式开发主要是介绍，用户在微信端发出请求，服务器进行响应。比如：微信菜单的点击事件、关键字的响应等。

开发语言：php

因为企业号刚出来的缘故，所以网上资料十分少，而企业号官方给的demo里面的Simple.php无法正常使用。

以下贴出我测试过的代码，并进行了面向对象的封装，可以给相关开发进行参考：

mytpl.php 功能：编辑处理文本、新闻模板

  
				  
				  
				".$text_mes['CreateTime']."  
				  
				  
			";  
			return $str;
		}

		public function news_tpl($mes, $news_mes){
			$allNews = "";
			foreach($news_mes as $news){
				$allNews.= "
				            
				           
				           
				           
				       ";
			}

			$str = "
			   
			   
			   ".$mes['CreateTime']."
			   
			   ".count($news_mes)."
			   
			       ".$allNews."
			   
			";
			return $str;
		}
	}
?>

weixin.php 功能：响应微信回调模式

 sVerifyMsgSig = $_GET["msg_signature"];
			$this -> sVerifyTimeStamp = $_GET["timestamp"];
			$this -> sVerifyNonce = $_GET["nonce"];
		}

		public function valid(){
			$wxcpt = new WXBizMsgCrypt($this -> token, $this -> encodingAesKey, $this -> corpId);
			$sVerifyEchoStr = $_GET["echostr"];
			$errCode = $wxcpt->VerifyURL($this -> sVerifyMsgSig, $this -> sVerifyTimeStamp, $this -> sVerifyNonce, $sVerifyEchoStr, $sEchoStr);
			if ($errCode == 0) {
				// 验证URL成功，将sEchoStr返回
				echo $sEchoStr;
			} else {
				print("ERR: " . $errCode . "\n\n");
			}
		}

		public function responseMsg(){
			$sReqData = file_get_contents("php://input");
			$wxcpt = new WXBizMsgCrypt($this -> token, $this -> encodingAesKey, $this -> corpId);
			//decrypt  
			$sMsg = "";  //解析之后的明文  
			$errCode = $wxcpt->DecryptMsg($this -> sVerifyMsgSig, $this -> sVerifyTimeStamp, $this -> sVerifyNonce, $sReqData, $sMsg); 
			if ($errCode == 0) {  
				if(!empty($sMsg)){
					$postObj = simplexml_load_string($sMsg, 'SimpleXMLElement', LIBXML_NOCDATA);
					if(trim($postObj -> MsgType) == "text"){
						$this -> responseText($postObj);
					}else if(trim($postObj -> MsgType) == "event"){
						$this -> responseEvent($postObj, $news_mes);
					}
				}
							
			} else {  
				print($errCode . "\n\n");  
			}  
		}

		public function responseText($postObj){
			$wxcpt = new WXBizMsgCrypt($this -> token, $this -> encodingAesKey, $this -> corpId);
			switch($postObj -> Content){  
				case "1001":  
				$mycontent="功能1";  
				break;  
				case "1002":  
				$mycontent="功能2";  
				$this -> returnText($postObj, $mycontent);
				break;  
				default :  
				$mycontent="输入无效，请查看相应说明";  
				$this -> returnText($postObj, $mycontent);
				break;  
			}  
			 
		}

		public function responseEvent($postObj){
			if($postObj -> Event == "click"){
				switch($postObj -> EventKey)
				{
					case get_interface_list:
						$mycontent = "1001.功能1\n1002.功能2\n\n请输入对应编号查询！";
						$this -> returnText($postObj, $mycontent);
						break;
					case message_board:
						$message = "问题反馈";
						$this -> returnText($postObj, $message);
						break;
				}
			}
		}

		public function returnText($postObj, $content){
			$wxcpt = new WXBizMsgCrypt($this -> token, $this -> encodingAesKey, $this -> corpId);
			$mytpl = new Mytpl;
			$text_mes = array("ToUserName" => $postObj->FromUserName, "FromUserName" => $this->corpId, "CreateTime" => $this->sVerifyTimeStamp, "Content" => $content);
			$sRespData = $mytpl -> text_tpl($text_mes); 
			$sEncryptMsg = ""; //xml格式的密文  
			$errCode = $wxcpt->EncryptMsg($sRespData, $this -> sVerifyTimeStamp, $this -> sVerifyNonce,  $sEncryptMsg);
			if ($errCode == 0) {  
				//file_put_contents('test.txt', $sEncryptMsg); //debug:查看smg  
				print($sEncryptMsg);  
			} else {  
				print($errCode . "\n\n");  
			} 
		}

		public function returnNews($postObj, $news_mes){
			$wxcpt = new WXBizMsgCrypt($this -> token, $this -> encodingAesKey, $this -> corpId);
			$mytpl = new Mytpl;
			$mes = array("ToUserName" => $postObj->FromUserName, "FromUserName" => $this->corpId, "CreateTime" => $this->sVerifyTimeStamp);
			$sRespData = $mytpl -> news_tpl($mes, $news_mes); 
			$sEncryptMsg = ""; //xml格式的密文  
			$errCode = $wxcpt->EncryptMsg($sRespData, $this -> sVerifyTimeStamp, $this -> sVerifyNonce,  $sEncryptMsg);
			if ($errCode == 0) {  
				//file_put_contents('test.txt', $sEncryptMsg); //debug:查看smg  
				print($sEncryptMsg);  
			} else {  
				print($errCode . "\n\n");  
			} 
		}
	}

	$weixin = new Weixin;
	//$weixin -> valid();
	$weixin -> responseMsg();
?>