node.js 的return执行问题

Question

}else if(data == '1'){
console.log('2:data:'+data);
return_msg='没有你想要听的这首歌';
let card = new Bot.Card.TextCard(return_msg);
console.log(return_msg);
return {
card: card,
outputSpeech: return_msg
};
}else{node.js  在百度cfc下调用bot-sdk开发，第一个console.log可以正常返回，第二个console.log不显示信息，下面的return也不执行，请问这是什么原因

Answer 1

        this.addIntentHandler('readbook', () => {
let lessonid;
let lessonname;
let lessonurl;
let lessoninfo;
let kemu;
let nianji;
let xueqi;
let lessonnumber;            kemu=this.getSlot('e_type');
            nianji=this.getSlot('e_class');
            xueqi=this.getSlot('e_part');
            lessonnumber=this.getSlot('e_lesson');
            this.waitAnswer();
            this.setExpectSpeech(false);
if(!kemu){
                this.nlu.ask('e_type');
                let card = new Bot.Card.TextCard('你想听哪个科目呢');
                return {
                    card: card,
                    outputSpeech: '你想听哪个科目呢'
                };
            }else if(!nianji){
this.nlu.ask('e_class');
let card = new Bot.Card.TextCard('你想听哪个年级的呢');
return {
card: card,
outputSpeech: '你想听哪个年级的呢'
                };
}else if(!xueqi){
this.nlu.ask('e_part');
let card = new Bot.Card.TextCard('你想听哪个学期');
return {
card: card,
outputSpeech: '你想听哪个学期'
};
}else{
                if(!lessonnumber){
                    this.nlu.ask('e_lesson');
                    let card = new Bot.Card.TextCard('你想听第几课呢');
                    return {
                        card: card,
                        outputSpeech: '你想听第几课呢'
                    };
                }else{
                    lessons(kemu,nianji,xueqi,lessonnumber);
lessonname=kemu+nianji+xueqi+'第'+lessonnumber+'课';


return mysql_connect().then(function(data){
if(data == 'connect_yes'){
   return mysql_find_lesson(playid);   
}else{
return '0';                   
} 
}).then(function(data){
if(data == '0'){
return '0'; }else if(data == 'find_no'){
return '1'; }else{
playurl=data[0].lurl;
playname=lessonname;
return playurl;
}
}).then(function(data){
connection.end();
console.log('0:data:'+data);
if (data == '0'){
console.log('1:data:'+data);
return_msg='数据库连接错误';
let card = new Bot.Card.TextCard(return_msg);
return {
card: card,
outputSpeech: return_msg
};
}else if(data == '1'){
console.log('2:data:'+data);
return_msg='没有你想要听的这首歌';
let card = new Bot.Card.TextCard(return_msg);
console.log(return_msg);
return {
card: card,
outputSpeech: return_msg
};
}else{
console.log('3:data:'+data);
return_msg='sdfsdfsadfasdfsadf';
console.log('3:return_msg:'+return_msg)
this.waitAnswer();
this.setExpectSpeech(false);
let card = new Bot.Card.TextCard(return_msg);

return {
card: card,
directives: [this.playSound(0)],
outputSpeech: '正在为你播放'+return_msg
};
}
})  }
}
        });
这是完整的代码，外连mysql库 以上代码就是最后三个return{card: card,outputSpeech: return_msg... ....}无法执行