相信很多人会跟我一样,token验证之后,发送消息给订阅号,没有消息返回。
以下,说一下我辛苦调试得到的解决办法:
首先,token验证:
自己写的token一直验证失败,找了好久,没有发现bug。实在没办法,就用了官方的示例代码。并且通过示例代码调试,发现了一个让我吐血的bug(也不算bug):
token验证貌似要求字符编码格式!!!!
官方的示例代码,直接上传到服务器,token直接过!
把官方示例代码改为UTF-8格式,再上传覆盖,token失败!失败!失败!
后来,把自己写的修改为ANSI格式还是token失败!醉了醉了!那只好用官方示例代码。在此,说下,token是一次握手验证,验证过一次就不用了。
下面,言归正传,貌似偏题了...orz
token验证之后,直接用官方示例代码,赶紧测试自己的订阅号,结果....发出去的消息就跟泼出去的水一样,什么鬼都没有返回...orz
又各种找bug,各种群问,各种搜索....历经本博主九九八十一的努力,终于找出了问题所在(这里是指我自己开发的,并不包括全部,如果你有不同的bug,欢迎交流):
1、最容易被忽视的一个bug,官方给的示例代码,压根就没调用写好的那个responseMsg()函数!
2、把之前的token代码注释,也就是$wechatObj->valid();这行代码。因为toke验证那段代码会有一个echo $echostr,会把responseMsg()函数里的echo $resultStr;(56行)xml格式混乱,输回给微信服务器就无法识别了(貌似只能识别xml格式,还有json格式)。(token验证是一次握手验证,验证开发者之后,就可以不用了,赶紧让它消失在我们整洁的代码orz...)
3、最恶心的一个bug,还是字符编码问题!orz...xml要求UTF-8编码,所以,把示例代码改回UTF-8编码!这个bug找的让我崩溃!!!
下面是我修改后的代码,能正常运行,无bug,需要的可以参考一下
<?php /** * wechat php test */ //define your token define("TOKEN", "codcodog"); $wechatObj = new wechatCallbackapiTest(); //$wechatObj->valid(); $wechatObj->responseMsg(); class wechatCallbackapiTest { public function valid() { $echoStr = $_GET["echostr"]; //valid signature , option if($this->checkSignature()){ header('content-type:text'); echo $echoStr; exit; } } public function responseMsg() { //get post data, May be due to the different environments $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //$postStr = file_get_contents("php://input"); file_put_contents("log.txt",$postStr,FILE_APPEND ); //extract post data if (!empty($postStr)){ /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection, the best way is to check the validity of xml by yourself */ libxml_disable_entity_loader(true); $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); $fromUsername = $postObj->FromUserName; //用户 $toUsername = $postObj->ToUserName; //公众平台 $keyword = trim($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></FuncFlag> </xml>"; if(!empty( $keyword )) { $msgType = "text"; $contentStr = "Welcome to wechat world!"; $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr); echo $resultStr; }else{ echo "Input something..."; } }else { echo ""; exit; } } private function checkSignature() { // you must define TOKEN by yourself if (!defined("TOKEN")) { throw new Exception('TOKEN is not defined!'); } $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $token = TOKEN; $tmpArr = array($token, $timestamp, $nonce); // use SORT_STRING rule sort($tmpArr, SORT_STRING); $tmpStr = implode( $tmpArr ); $tmpStr = sha( $tmpStr ); if( $tmpStr == $signature ){ return true; }else{ return false; } } } ?>
以上所述是小编给大家分享的php微信订阅号开发之token验证后自动发送消息给订阅号但是没有消息返回的解决方案,希望大家喜欢。

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