upate alipay login

@@ -43,13 +43,10 @@ function paramsToRaw(params) {
 function AlipayStrategy(options, verify) {
     if (typeof options === 'function') {
         verify = options;
-        options = {};
     }
-    options = options || {};
     passport.Strategy.call(this);
     this.name = 'alipay';
     this._verify = verify;
-    this._options = options;
 }
 
 util.inherits(AlipayStrategy, passport.Strategy);
@@ -63,34 +60,33 @@ AlipayStrategy.prototype.authenticate = function(req, options) {
 
         delete query.sign_type;
         delete query.sign;
-        let signString = paramsToRaw(query) + this._options.key;
+        let signString = paramsToRaw(query) + options.key;
 
         if (signType === 'MD5' && sign !== md5(signString)) {
             this.error('alipay callback sign check fail');
             this.fail('alipay callback sign check fail');
+            return;
         }
 
         if (req.query.is_success === 'T') {
             let user = {
                 userId: req.query.user_id,
-                realName: req.query.real_name,
+                realName: req.query.realName,
                 email: req.query.email
             };
-
+            
             this.success(user, null);
         } else {
             this.error('alipay login fail');
             this.fail(req.error_code);
         }
     } else {
-        let params = _.assign(defaultOptions, this._options, options);
+        let params = _.assign(defaultOptions, options);
         let signType = params.sign_type;
-        let key = params.key;
 
         delete params.sign_type;
         delete params.sign;
-        delete params.key;
-        let signString = paramsToRaw(params) + key;
+        let signString = paramsToRaw(params) + options.key;
 
         if (signType === 'MD5') {
             params.sign = md5(signString);
@@ -103,4 +99,3 @@ AlipayStrategy.prototype.authenticate = function(req, options) {
 exports = module.exports = AlipayStrategy;
 
 exports.Strategy = AlipayStrategy;
-