怎么配置session和cookie让它保持登录呢？下面这段代码有问题吗？

  init(http){
       console.log('init base')
	      var self = this;
	      super.init(http);
        self.assign({
          productImgPath:productImgUrl,
          globalFid:0
        })
        //var userInfo = self.session('userInfo');
        //console.log(userInfo);
	      return self.session('userInfo').then(function (userInfo) {
	        if (isEmpty(userInfo)) {
	          self.assign({
	            loginStatus: 0,
	            userInfo: {}
	          })
	        } else {
            console.log(userInfo);
	          self.assign({
	            loginStatus: 1,
	            userInfo: userInfo
	          })
	        }
	      return Promise.resolve();
	      })
	    };