获取code
https://open.weixin.qq.com/connect/oauth2/authorize?appid=这里是你的公众号的APPID&redirect_uri=http://www.xx.com/getcode&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect
用户点击确认登录,自动跳转下面地址得到code
镇扮 http://www.xx.com/getcode 这个是你自己的跳转地址
http://www.xx.com/getcode?code=0064f7afef7af7b395147bfe8b51f7bf&state=123
后面的这个 ?code=……123 是微信自动跳转添加的,不是你自己加的
下面是PHP语言,写在纯旅贺getcode这个页面里
$code = $_GET['code']//获取code
$weixin = file_get_contents("https://api.weixin.qq.com/sns/oauth2/access_token?appid=这里是你的APPID&secret=这里是你的SECRET&code=".$code."&grant_type=authorization_code")//通过code换取网页授权access_token
$jsondecode = json_decode($weixin)//对JSON格式的字符串进行编码
$array = get_object_vars($jsondecode)//转换成数组
$openid = $array['openid']//输出openid
//***方法二
$appid = "公众号在微信的appid"
$secret = "公众号在微信的app secret"
$code = $_GET["code"]
$get_token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid.'&secret='.$secret.'&code='.$code.'&grant_type=authorization_code'
$ch = curl_init()
curl_setopt($ch,CURLOPT_URL,$get_token_url)
curl_setopt($ch,CURLOPT_HEADER,0)
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 )
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10)
$res = curl_exec($ch)
curl_close($ch)
$json_obj = json_decode($res,true)
//根据openid和access_token查询用户信息
$access_token = $json_obj['access_token']
$openid = $json_obj['openid']
$get_user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN'
$ch = curl_init()
curl_setopt($ch,CURLOPT_URL,$get_user_info_url)
curl_setopt($ch,CURLOPT_HEADER,0)
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 )
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10)
$res = curl_exec($ch)
curl_close($ch)
//解析json
$user_obj = json_decode($res,true)
$_SESSION['user'] = $user_obj
print_r($user_obj)
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