多个域名使用微信获取用户信息的解决办法

网页授权
应用 A  ：a.com
其他应用：b.com，c.com ...

一、网页授权 

注意授权域名 写主域名A 的域名地址

1. 方式一

   主应用 A 获取用户信息 并缓存
   其他应用 通过 返回的唯一标识 来调用主应用的接口 获取信息


   1) 跳转A应用 url?redirect_uri=外部uri
   2) 缓存外部uri
   3) 跳转微信授权url?redirect_uri=当前uri
   4) 微信授权完成 获取code
      根据code 获取到用户所有信息 并用
      key(code,userinfo) 格式缓存
   5) 跳回 外部uri 并携带参数 code
   6) 外部应用 根据code 向A应用请求接口

      取到用户信息 

主应用 A---------------------------------------

/** * 入口文件 */public function wysq(){$this->session->set_userdata('redirect_uri',$this->input->get('redirect_uri'));$array=array(    'appid'=>$this->_appid,    'redirect_uri'=>'http://'.$_SERVER['HTTP_HOST'].'/home/api/oauth',    'response_type'=>'code',    'scope'=>'snsapi_userinfo',//snsapi_base ,snsapi_userinfo    'state'=>'state');$list=http_build_query($array);$url = 'https://open.weixin.qq.com/connect/oauth2/authorize?'.$list.'#wechat_redirect';echo '<script> location.href="'.$url.'"</script>';exit;}public function oauth(){     $code = $this->input->get('code');            if($code){$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$userinfo =  $this->curl->simple_get("https://api.weixin.qq.com/sns/oauth2/access_token?appid=$this->_appid&secret=$this->_appsecret&code=$code&grant_type=authorization_code");$user=json_decode($userinfo);$access_token =  $user->access_token;$openid   =  $user->openid;                //这里判断用户是否存在啊                if($openid !== ''){                    $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));                    $baseinfo   = $this->curl->simple_get('https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN');                    $info    = json_decode($baseinfo);    if(empty($info)){         die('微信返回有误！！！');    }        //coding here... 将info 存入缓存 key $code : $info                    $gouri = $this->session->userdata('redirect_uri');                    $gouri = stripos($gouri, '?') === false ? $gouri.'?code='.$code:$gouri.'&code='.$code;                    header("Location:".$gouri);    exit;            }else{                die('微信返回有误！！！');                }    }else{die('微信返回有误！！！');    }}//获取用户信息接口public function getinfo(){    header("Content-type: application/json");    $code = $this->input->get('code');    if($code){        //coding here... 这里根据code 拿到用户信息 并删除缓存        if($userinfo){                    echo json_encode(array('status'=>1,'msg'=>'信息获取成功！','userinfo'=>$userinfo));    exit;}echo json_encode(array('status'=>-2,'msg'=>'code已失效，请重新授权！'));exit;     }else{echo json_encode(array('status'=>-1,'msg'=>'code不存在！'));exit;     }}

其他应用：--------------------------------------------------

//授权入口  public function other_auth(){        $userinfo = $this->session->userdata('userinfo');        if(!$userinfo){    $redirect_uri = '当前url'.'/getuser';    $uri = 'A应用地址'."?redirect_uri=".$redirect_uri;    header("Location:".$uri);    exit;}   }   public function getuser(){$code = $this->input->get('code');$userinfo = $this->curl->simple_get('A应用地址'."/getinfo",array('code'=>$code));//此处即取到用户信息...   }

2. 方式二

   主应用 A 只跳转从微信取到 code
   其他应用 通过 code 直接从微信拉取用户信息
   1) 跳转A应用 url?redirect_uri=外部uri
   2) 缓存外部uri
   3) 跳转微信授权url?redirect_uri=当前uri
   4) 微信授权完成 获取code
   5) 跳回 外部uri 并携带参数 code
   6) 根据 code 从微信拉取用户信息


 主应用 A----------------------------------------------

 

/** * 入口文件 */public function wysq(){$this->session->set_userdata('redirect_uri',$this->input->get('redirect_uri'));$array=array(    'appid'=>$this->_appid,    'redirect_uri'=>'http://'.$_SERVER['HTTP_HOST'].'/home/api/oauth',    'response_type'=>'code',    'scope'=>'snsapi_userinfo',//snsapi_base ,snsapi_userinfo    'state'=>'state');$list=http_build_query($array);$url = 'https://open.weixin.qq.com/connect/oauth2/authorize?'.$list.'#wechat_redirect';echo '<script> location.href="'.$url.'"</script>';exit;}public function oauth(){     $code = $this->input->get('code');    if($code){        $gouri = $this->session->userdata('redirect_uri');                $gouri = stripos($gouri, '?') === false ? $gouri.'?code='.$code:$gouri.'&code='.$code;        header("Location:".$gouri);        exit;    }else{        die('微信返回有误！！！');    }}

其他应用：------------------------------------------

//授权入口  public function other_auth(){        $userinfo = $this->session->userdata('userinfo');        if(!$userinfo){    $redirect_uri = '当前url'.'/getuser';    $uri = 'A应用地址'."?redirect_uri=".$redirect_uri;    header("Location:".$uri);    exit;}   }   public function getuser(){     $code = $this->input->get('code');            if($code){$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$userinfo =  $this->curl->simple_get("https://api.weixin.qq.com/sns/oauth2/access_token?appid=$this->_appid&secret=$this->_appsecret&code=$code&grant_type=authorization_code");$user=json_decode($userinfo);$access_token =  $user->access_token;$openid   =  $user->openid;                //这里判断用户是否存在啊                if($openid !== ''){                    $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));                    $baseinfo   = $this->curl->simple_get('https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN');                    $info    = json_decode($baseinfo);    if(empty($info)){         die('微信返回有误！！！');    }        //coding here... 这里已经获取到用户信息了    exit;            }else{                die('微信返回有误！！！');                }    }else{die('微信返回有误！！！');    }}

二、jssdk 获取

 (这个最多只能绑定3个域名)

1.方式一 

    主应用 A 获取ticket
    其他应用通过A 提供的ticket接口 获取ticket 并组建jssdk

主应用A ---------------------------------------------

//载入时    public function index(){header("Content-type: application/json");$token=  file_get_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt');$nowtime = time();if($token){    $str=explode('`',$token);    if($nowtime>=$str[1] or !$str[0]){$access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->_appid."&secret=".$this->_appsecret;$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$src =  $this->curl->simple_get($access_token_url);$crect=json_decode($src);$access= $crect->access_token;$time=time()+7100;$string=$access.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt',$string);       }else{$access=$str[0];      }}else{       $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));    $src =  $this->curl->simple_get("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->_appid."&secret=".$this->_appsecret);     $crect = json_decode($src);    $access = $crect->access_token;    $time = time()+7100;    $string = $access.'`'.$time;      $write = file_put_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt',$string);}$access_token = $access; //获取到基础access_token//开始获取ticket$ticket= file_get_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt');if($ticket){    $str = explode('`',$ticket);    if($nowtime>=$str[1] or !$str[0]){                $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$access_token_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$access_token&type=jsapi";$src =  $this->curl->simple_get($access_token_ticket_url);$crect=json_decode($src);$access_ticket= $crect->ticket;$time=time()+7100;$string=$access_ticket.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt',$string);    }else{$access_ticket=$str[0];    }}else{    $access_token_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$access_token&type=jsapi";    $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));    $src =  $this->curl->simple_get($access_token_ticket_url);    $crect=json_decode($src);    $access_ticket= $crect->ticket;    $time=time()+7100;    $string=$access_ticket.'`'.$time;    $write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt',$string);}echo json_encode(array('ticket'=>$access_ticket));exit;   }

其他应用-------------------------------------------------------

public function getjssdk(){        $access_ticket = ->curl->simple_get('A应用提供的ticket接口地址');;$data['timestamp'] = $nowtime;$url = urldecode($_POST['url']);//这里获取url参数有个坑$data['jsapi_ticket']= $access_ticket;$data['nonceStr']= $this->getRandChar(16);$data['signature'] = sha1("jsapi_ticket={$data['jsapi_ticket']}&noncestr={$data['nonceStr']}×tamp={$data['timestamp']}&url=$url");$data['appId'] = $this->_appid;        echo json_encode($data);exit;   }

2.方式二

    主应用 A 组建 jssdk 
    其他应用通过A 提供的jssdk 接口 直接获取

主应用A------------------------------------------------------------------

//载入时public function index(){header("Content-type: application/json");$token=  file_get_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt');$nowtime = time();if($token){ $str=explode('`',$token);if($nowtime>=$str[1] or !$str[0]){$access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->_appid."&secret=".$this->_appsecret;$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$src =  $this->curl->simple_get($access_token_url);$crect=json_decode($src);$access= $crect->access_token;$time=time()+7100;$string=$access.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt',$string);}else{$access=$str[0];} } else{ $this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$src =  $this->curl->simple_get("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->_appid."&secret=".$this->_appsecret);$crect=json_decode($src);$access= $crect->access_token;$time=time()+7100;$string=$access.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/token.txt',$string); }$access_token = $access; //获取到基础access_token//开始获取ticket$ticket=file_get_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt'); if($ticket) { $str=explode('`',$ticket);if($nowtime>=$str[1] or !$str[0]){$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$access_token_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$access_token&type=jsapi";$src =  $this->curl->simple_get($access_token_ticket_url);$crect=json_decode($src);$access_ticket= $crect->ticket;$time=time()+7100;$string=$access_ticket.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt',$string);}else{$access_ticket=$str[0];} } else {$access_token_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$access_token&type=jsapi";$this->curl->options(array(CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false));$src =  $this->curl->simple_get($access_token_ticket_url);$crect=json_decode($src);$access_ticket= $crect->ticket;$time=time()+7100;$string=$access_ticket.'`'.$time;$write=file_put_contents($_SERVER['DOCUMENT_ROOT'].'/ticket.txt',$string); } if($this->input->get('gourl')) { redirect($this->input->get('gourl')); } $data['timestamp'] = $nowtime; $url= urldecode($_POST['url']);//这里获取url参数有个坑 $data['jsapi_ticket']= $access_ticket; $data['nonceStr']= $this->getRandChar(16); $data['signature'] = sha1("jsapi_ticket={$data['jsapi_ticket']}&noncestr={$data['nonceStr']}×tamp={$data['timestamp']}&url=$url"); $data['appId'] = $this->_appid; echo json_encode($data); exit;}