下面通过图文并茂的方式介绍微信公众平台开发过程,具体内容如下:
微信公众平台有两种模式:编辑模式 和 开发模式。
普通的功能可以通过编辑模式来搞定。开发模式具有更多的功能。让我们来使用开发模式开发helloword吧
步骤如下:
第一步:先注册一个公众号(https://mp.weixin.qq.com)
第二步:注册sae(http://sae.sina.com.cn/),作为你的服务器。
第三步:登录微信公众平台(https://mp.weixin.qq.com)查看开发文档并下载官方提供的demo。做适当修改。
第四步:将代码压缩成zip格式,上传到sae平台。
第五步:登录微信公众平台,进入开发者中心。开启“服务者配置”。
第六步:成功了。
开始吧:
1.先注册一个公众号(https://mp.weixin.qq.com)
2.注册sae(http://sae.sina.com.cn/)
注册完以后要记得进行实名认证,不然绑定到公众平台的时候,会有永远的“无法获取token”的提示。(实名认证需要3个工作日才能成功)
然后可以点击创建应用。创建后可以在下面看到。
进入自己创建的应用。然后点击代码管理。
3.登录微信公众平台(https://mp.weixin.qq.com)
查看开发文档并下载官方提供的demo。
打开后是如下的代码:
<?php /** * wechat php test */ //define your token define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); $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)){ /* 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; $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"; $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 = sha1( $tmpStr ); if( $tmpStr == $signature ){ return true; }else{ return false; } } } ?>
我试过,如上代码,似乎无法执行到response那一块。所以做了更改
<?php /** * wechat php test */ //define your token define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); //这里做了更改 if($_GET["echostr"]){ $wechatObj->valid(); }else{ $wechatObj->responseMsg(); } 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)){ /* 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; $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"; $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 = sha1( $tmpStr ); if( $tmpStr == $signature ){ return true; }else{ return false; } } } ?>
你可以将Welcome to wechat world!更改为Hello Word!
4.将代码压缩成zip格式,上传到sae平台。
点击“编辑代码”,可以看到你上传的php文件。然后右击,url查看。复制url(http://1.carlzhang.sinaapp.com/wx_carlzhang819.php)。在这里要记住在此php文件中定义的token。此处为“weixin”,可以在如下图中看到。
5.登录微信公众平台,进入开发者中心。开启“服务者配置”。url填写上一步复制的url(这里我删除了前面的1.因为我的sae默认第一版。你可以试试,删除1,若是url访问,不报404,那就是没问题)。token填写的是代码中的token(上面是“weixin”)。
如果启用成功,就可以关注你的微信平台,输入内容,看看提示是不是Welcome to wechat world!或者Hello Word!
以上全部内容就是针对微信公众平台做的讲解,希望可以帮助到大家。

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