在尝试了几个小时之后,终于把这事搞定了。其实想法很简单,就是普通用户在关注公众后之后,输入一条消息,公众号能自动回复一条已经设计好的消息即可,其实也已经有很多网友做了这件事了,我就不在此大讲了,我碰到了问题竟然是测试代码的问题,所以我会把已经验证通过的php代码贴上来。(偷偷说一句,LZ不会php,倒是想用python写应用)
1、首先在BAE或SAE上搭建一个简单的应用。我是在BAE上搭的,貌似还0.4元/天,呃!应用语言倒是多样化,java-web,python-web,php-web,node-js都可以。在我这次验证中,选择了php-web。下图为添加部署后的列表:
我是选用了git方式,所以在windows本地用git客户端首先将服务端代码pull下来,然后修改index.php文件,此文件用来帮助微信平台验证服务器有效性,代码如下:
<?php // 注意要将***改成你自己的token define("TOKEN", "***"); $wechatObj = new wechatCallbackapiTest(); $wechatObj->valid(); class wechatCallbackapiTest { public function valid() { $echoStr = $_GET["echostr"]; //valid signature , option if($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; } } } ?>
2、接下来在微信开发者中心,设置好BAE中已经设置好的URL和index.php中的token,验证通过后就可以正式开发了
3、接下来上传真正的业务代码到BAE服务端,起名也可叫index.php,可以覆盖先前的index.php。新内容如下:
<?php /** * wechat php test */ //define your token define("TOKEN", "cshitest"); $wechatObj = new wechatCallbackapiTest(); $wechatObj->responseMsg(); //$wechatObj->valid(); class wechatCallbackapiTest { /*public function valid() { $echoStr = $_GET["echostr"]; //valid signature , option if($this->checkSignature()){ echo $echoStr; exit; } }*/ public function responseMsg() { //get post data, May be due to the different environments $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //extract post data if (!empty($postStr)){ $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); $RX_TYPE = trim($postObj->MsgType); switch($RX_TYPE) { case "text": $resultStr = $this->handleText($postObj); break; case "event": $resultStr = $this->handleEvent($postObj); break; default: $resultStr = "Unknow msg type: ".$RX_TYPE; break; } echo $resultStr; }else { echo ""; exit; } } public function handleText($postObj) { $fromUsername = $postObj->FromUserName; $toUsername = $postObj->ToUserName; $keyword = trim($postObj->Content); $time = time(); $textTpl = "<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[%s]]></MsgType> <Content><![CDATA[%s]]></Content> <FuncFlag>0</FuncFlag> </xml>"; if(!empty( $keyword )) { $msgType = "text"; if($keyword=="你好"){ $contentStr = "hello"; }elseif($keyword=="苏州"){ $contentStr = "上有天堂,下有苏杭"; }else{ $contentStr = "感谢您关注【卓锦苏州】 微信号:zhuojinsz"; } $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr); echo $resultStr; }else{ echo "Input something..."; } } public function handleEvent($object) { $contentStr = ""; switch ($object->Event) { case "subscribe": $contentStr = "感谢您关注【卓锦苏州】"."\n"."微信号:zhuojinsz"."\n"."卓越锦绣,名城苏州,我们为您提供苏州本地生活指南,苏州相关信息查询,做最好的苏州微信平台。"."\n"."目前平台功能如下:"."\n"."【1】 查天气,如输入:苏州天气"."\n"."【2】 查公交,如输入:苏州公交178"."\n"."【3】 翻译,如输入:翻译I love you"."\n"."【4】 苏州信息查询,如输入:苏州观前街"."\n"."更多内容,敬请期待..."; break; default : $contentStr = "Unknow Event: ".$object->Event; break; } $resultStr = $this->responseText($object, $contentStr); return $resultStr; } public function responseText($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; } 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; } } } ?>
注意成功用git commit之后,要重新发布下应用。
4、用微信登陆,关注自己创建的微信号,当输入“你好”时,返回hello,即成功了!
参考链接
http://www1.phpchina.com/archives/view-43385-1.html
http://blog.csdn.net/zxianyong/article/details/9298963