首先我在onload函数中获取openid并setdata到页面data中，此时打印data，存在openid

wx.cloud.callFunction({
            name:'getOpenidtest',
            success:res =>{
                console.log(res,'11111111111');
                //console.log(res.result.openid);
                this.setData({
                    openid:res.result.openid
                })
                console.log(this.data);
            },
            fail:res =>{
                console.log(res,'11111111111');
            }
        })

然后在onshow里调用openapi，他却消失了，打印data，openapi存在

 onShow:function(){
        const { goods_id,countDownTxt} = this.data;
        const openid = this.data.openid
        
        if(countDownTxt == null){
            wx.cloud.callFunction({
                name:'sendMessagetest',
                data:{
                     goods_id,
                     openid
                     
                },
                success:res =>{
                    console.log(this.data);
                    console.log(res,'sendMessage正在被执行',openid,goods_id);
                },
                fail:res =>{
                    console.log(res,'fail');
                }
            })
        }
        //获取openid
        
    }

大致就是这种情况，求解答