网页授权登录"/>
laravel+guzzle微信网页授权登录
1 第一步：用户同意授权，获取code
2 第二步：通过code换取网页授权access_token
3 第三步：刷新access_token（如果需要）
4 第四步：拉取用户信息(需scope为 snsapi_userinfo)
1.因为没有直接操作公众号。所以在建立了视图login.为了调起用户授权，获取code
<html><head><title>login</title></head><body><div class="container"><input type="button" name="login" id="login" value="登录"></div><script src="{{asset('js/jquery-1.10.2.min.js')}}"></script><script>function getUrlParam(name) {var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");var r = window.location.search.substr(1).match(reg);if (r != null) return unescape(r[2]);return null;}$('#login').click(function (callback) {var appId = 'wxdecc14c9870858d6';var oauth_url = '';var url = "=" + appId + "&redirect_uri=" + oauth_url + "&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect"
// =wxdecc14c9870858d6&redirect_uri=;response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect
var code = getUrlParam("code");if (!code) {window.location = url;}else {console.log(code);$.ajax({type: 'POST',url: oauth_url,dataType: 'json',data: {code: code
},success: function (data) {if (data.code === 200) {callback(data.data)}},error: function (error) {throw new Error(error)}})}})</script></body>
</html>
2.安装guzzle依赖详细查看.html#installation；
3.获取access_token与openid;
private function Token($code){
$appId = env('WECHAT_OFFICIAL_ACCOUNT_APPID');
$secret = env('WECHAT_OFFICIAL_ACCOUNT_SECRET');
$url = "=".$appId."&secret=".$secret."&code=".$code."&grant_type=authorization_code";
$client = new GuzzleClient();
$response = $client->get($url);
$Tokendata =json_decode($response->getBody()->getContents());
$token = $Tokendata->access_token;
//不echo token会报错
echo "<p style='display: none;'>".$token."</p>";
$openid = $Tokendata->openid;
$comp = compact('token','openid');
return $comp;
}
//获取用户数据
public function testindex(Request $request){
$code = $request->code;
//获取Token返回数据
$comp = $this->Token($code);
$token = $comp['token'];
$openid = $comp['openid'];
$userinfo_url ="=".$token."&openid=".$openid."&lang=zh_CN";
$client = new GuzzleClient();
$response = $client->get($userinfo_url);
$userinfo = json_decode($response->getBody()->getContents());
// dd($userinfo);
$unionid = $userinfo->unionid;
$nickname = $userinfo->nickname;
$sex = $userinfo->sex;
$headimgurl = $userinfo->headimgurl;
// echo "<p style='display: none;'>".$unionid.$sex.$nickname.$headimgurl."</p>";
//判断数据是否存在用户
$check_user = User::where('openId', $openid)->first();
if (empty($check_user)){
//不存在则存入用户数据
$user = new User();
$user->openId = $openid;
$user->unionId = $unionid;
$user->nickName = $nickname;
$user->sex = $sex;
$user->avatar = $headimgurl;
$user->save();
return response()->json([
'status'=>1000,
'msg'=>'success',
]);
}else{
return response()->json([
'status'=>1001,
'msg'=>'用户'.$nickname.'已存在',
]);
}
}
遇到的坑：
1.login的路由不能在微信开发工具调试，因为不能触发登录回调。需要把微信开发工具授权登录页的路由复制到微信客户端访问。
2.不知道是微信api的问题还是laravel dd()输出的原因。function Token（）中
$Tokendata =json_decode($response->getBody()->getContents());
这里有个bug：dd()输出的话，在苹果机中是可以打印出完整信息。但是在安卓机中一直显示code已经被使用。但是使用echo ，print_r()输出。无论在苹果机中还是安卓机中都是可以打印出完整的信息。所以在function Token（）中需要加上以下语句。否则显示stdClass错误，原因不详。
echo "<p style='display: none;'>".$token."</p>";
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