微信公众平台开发入门教程（四）获取接收消息

2024年4月30日 互联网

定义消息类型处理函数

在接收到的消息中根据消息类型，定义不同的消息处理函数，

public function responseMsg()
{$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];if (!empty($postStr)){$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$RX_TYPE = trim($postObj->MsgType);switch ($RX_TYPE){case "text":$resultStr = $this->receiveText($postObj);break;case "image":$resultStr = $this->receiveImage($postObj);break;case "location":$resultStr = $this->receiveLocation($postObj);break;case "voice":$resultStr = $this->receiveVoice($postObj);break;case "video":$resultStr = $this->receiveVideo($postObj);break;case "link":$resultStr = $this->receiveLink($postObj);break;case "event":$resultStr = $this->receiveEvent($postObj);break;default:$resultStr = "unknow msg type: ".$RX_TYPE;break;}echo $resultStr;}else {echo "";exit;}
}

  原文：http://www.cnblogs.com/txw1958/p/wechat-tutorial.html 

定义并实现回复函数

在这里，我们先全部用文本消息回复实现

    private function transmitText($object, $content, $flag = 0){$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>%d</FuncFlag>
</xml>";$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag);return $resultStr;}

  原文：http://www.cnblogs.com/txw1958/p/wechat-tutorial.html 

各种消息类型函数实现

1、事件消息

    private function receiveEvent($object){$contentStr = "";switch ($object->Event){case "subscribe":$contentStr = "欢迎关注方倍工作室";break;case "unsubscribe":$contentStr = "";break;case "CLICK":switch ($object->EventKey){default:$contentStr = "你点击了菜单: ".$object->EventKey;break;}break;default:$contentStr = "receive a new event: ".$object->Event;break;}$resultStr = $this->transmitText($object, $contentStr);return $resultStr;}

2、文本消息

    private function receiveText($object){$funcFlag = 0;$contentStr = "你发送的是文本，内容为：".$object->Content;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

3、图片消息

    private function receiveImage($object){$funcFlag = 0;$contentStr = "你发送的是图片，地址为：".$object->PicUrl;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

4、语音消息

    private function receiveVoice($object){$funcFlag = 0;$contentStr = "你发送的是语音，媒体ID为：".$object->MediaId;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

5、视频消息

    private function receiveVideo($object){$funcFlag = 0;$contentStr = "你发送的是视频，媒体ID为：".$object->MediaId;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

6、位置消息

    private function receiveLocation($object){$funcFlag = 0;$contentStr = "你发送的是位置，纬度为：".$object->Location_X."；经度为：".$object->Location_Y."；缩放级别为：".$object->Scale."；位置为：".$object->Label;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

7、链接消息

    private function receiveLink($object){$funcFlag = 0;$contentStr = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}

 

完整代码

/*
方倍工作室 
http://www.cnblogs.com/txw1958/
*/define("TOKEN", "pondbay");$wechatObj = new wechatCallbackapiTest();
if (isset($_GET['echostr'])) {$wechatObj->valid();
}else{$wechatObj->responseMsg();
}class wechatCallbackapiTest
{public function valid(){$echoStr = $_GET["echostr"];if($this->checkSignature()){echo $echoStr;exit;}}private function checkSignature(){$signature = $_GET["signature"];$timestamp = $_GET["timestamp"];$nonce = $_GET["nonce"];$token = TOKEN;$tmpArr = array($token, $timestamp, $nonce);sort($tmpArr);$tmpStr = implode( $tmpArr );$tmpStr = sha1( $tmpStr );if( $tmpStr == $signature ){return true;}else{return false;}}public function responseMsg(){$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];if (!empty($postStr)){$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$RX_TYPE = trim($postObj->MsgType);switch ($RX_TYPE){case "text":$resultStr = $this->receiveText($postObj);break;case "image":$resultStr = $this->receiveImage($postObj);break;case "location":$resultStr = $this->receiveLocation($postObj);break;case "voice":$resultStr = $this->receiveVoice($postObj);break;case "video":$resultStr = $this->receiveVideo($postObj);break;case "link":$resultStr = $this->receiveLink($postObj);break;case "event":$resultStr = $this->receiveEvent($postObj);break;default:$resultStr = "unknow msg type: ".$RX_TYPE;break;}echo $resultStr;}else {echo "";exit;}}private function receiveText($object){$funcFlag = 0;$contentStr = "你发送的是文本，内容为：".$object->Content;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveImage($object){$funcFlag = 0;$contentStr = "你发送的是图片，地址为：".$object->PicUrl;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveLocation($object){$funcFlag = 0;$contentStr = "你发送的是位置，纬度为：".$object->Location_X."；经度为：".$object->Location_Y."；缩放级别为：".$object->Scale."；位置为：".$object->Label;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveVoice($object){$funcFlag = 0;$contentStr = "你发送的是语音，媒体ID为：".$object->MediaId;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveVideo($object){$funcFlag = 0;$contentStr = "你发送的是视频，媒体ID为：".$object->MediaId;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveLink($object){$funcFlag = 0;$contentStr = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;$resultStr = $this->transmitText($object, $contentStr, $funcFlag);return $resultStr;}private function receiveEvent($object){$contentStr = "";switch ($object->Event){case "subscribe":$contentStr = "欢迎关注方倍工作室";break;case "unsubscribe":$contentStr = "";break;case "CLICK":switch ($object->EventKey){default:$contentStr = "你点击了: ".$object->EventKey;break;}break;default:$contentStr = "receive a new event: ".$object->Event;break;}$resultStr = $this->transmitText($object, $contentStr);return $resultStr;}private function transmitText($object, $content, $flag = 0){$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>%d</FuncFlag>
</xml>";$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag);return $resultStr;}

 

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