最近在修改一个移动商城,由于wap端是HTML5的,还大量使用了art模板技术,一开始修改很不适应,而且实现HTML5取openid一直没能实现很好的实现,经过对获取原理的理解和学习,终于还是实现了HTML获取微信openid,而且改动不大,闲话少说,直接上干货:
一、写个js,用于取accesscode,并直接通过openid读取用户表中的注册信息
$(function () { var wxopenid=getcookie('wxopenid'); var key=getcookie('key'); if (key==''){ var access_code=GetQueryString('code'); if (wxopenid==""){ if (access_code==null) { var fromurl=location.href; var url='https://open.weixin.qq.com/connect/oauth2/authorize?appid=填你自已的appid哟&redirect_uri='+encodeURIComponent(fromurl)+'&response_type=code&scope=snsapi_base&state=STATE%23wechat_redirect&connect_redirect=1#wechat_redirect'; location.href=url; } else { $.ajax({ type:'get', url:ApiUrl+'/index.php?act=payment&op=getopenid', async:false, cache:false, data:{code:access_code}, dataType:'json', success:function(result){ if (result!=null && result.hasOwnProperty('openid') && result.openid!=""){ addcookie('wxopenid',result.openid,360000); getlogininfo(result.openid); } else { alert('微信身份识别失败 \n '+result); location.href=fromurl; } } }); } }else{ if (key=='' && wxopenid!='') getlogininfo(wxopenid); } function getlogininfo(wxopenid){ $.ajax({ type:'get', url: ApiUrl + '/index.php?act=login&op=autologininfo', data: { wxopenid:wxopenid}, dataType:'json', async:false, cache:false, success: function (result) { if (result.return_code=='OK'){ addcookie('key',result.memberinfo.key); addcookie('username',result.memberinfo.username); }else{ alert(result.return_msg); location.href=WapSiteUrl+'/tmpl/member/login.html'; } } }); } } });第二步:在html页的head中加载js文件
<head> <meta charset="UTF-8"> <title>麦斯卡商城</title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <meta name="format-detection" content="telephone=no"> <link rel="stylesheet" type="text/css" href="css/reset.css"> <link rel="stylesheet" type="text/css" href="css/main.css"> <link rel="stylesheet" type="text/css" href="css/index.css"> <link rel="stylesheet" type="text/css" href="css/member.css"> <script type="text/javascript" src="js/config.js"></script> <script type="text/javascript" src="js/zepto.min.js"></script> <script type="text/javascript" src="js/template.js"></script> <script type="text/javascript" src="js/common.js"></script> <script type="text/javascript" src="js/getwxopenid_index.js"></script> </head>第三步:实现openid的后台方法,这个方法不详列了,官方有示例
/** * 获取openid * @return type */ public function getopenidOp(){ $jsApi=new JsApi_pub(); $code = $_GET['code']; $jsApi->setCode($code); echo $jsApi->getOpenId(); }
function getOpenid() <span style="white-space:pre"> </span>{ $url = $this->createOauthUrlForOpenid(); return $this->httpGet($url); <span style="white-space:pre"> </span>}
/** <span style="white-space:pre"> </span> * <span style="white-space:pre"> </span>作用:生成可以获得openid的url <span style="white-space:pre"> </span> */ <span style="white-space:pre"> </span>function createOauthUrlForOpenid() <span style="white-space:pre"> </span>{ <span style="white-space:pre"> </span>$urlObj["appid"] = WxPayConf_pub::APPID; <span style="white-space:pre"> </span>$urlObj["secret"] = WxPayConf_pub::APPSECRET; <span style="white-space:pre"> </span>$urlObj["code"] = $this->code; <span style="white-space:pre"> </span>$urlObj["grant_type"] = "authorization_code"; <span style="white-space:pre"> </span>$bizString = $this->formatBizQueryParaMap($urlObj, false); //api.weixin.qq.com=101.226.90.58 <span style="white-space:pre"> </span>return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString; <span style="white-space:pre"> </span>}另外,js文件中的变量,尽量不要用全局的,当多个js加载时,变量可能冲突,造成一些不可预则的问题;
这样就实现了在html5页面直接取accesscode,再通过ajax方法在后台取openid;
如果要看效果,可以微信扫码进入商城(本来只想放个二维码,又怕有人以为是什么下载链接)