我正在使用AWS Lambda和Serverless框架创建Facebook Messenger机器人。现在,我只希望它重复发送回给用户的所有内容。这是代码:
'use strict';
var https = require('https');
const axios = require('axios');
var VERIFY_TOKEN = "VERIFY";
var PAGE_ACCESS_TOKEN = "TOKEN";
module.exports.hello = (event, context, callback) => {
const response = {
statusCode: 200,
body: JSON.stringify({
message: 'Go Serverless v1.0! Your function executed successfully!',
input: event,
}),
};
callback(null, response);
// Use this code if you don't use the http event with the LAMBDA-PROXY integration
// callback(null, { message: 'Go Serverless v1.0! Your function executed successfully!', event });
};
// Receive user messages
module.exports.botReply = (event, context, callback) => {
var data = JSON.parse(event.body);
console.log("BOT REPLY")
// Make sure this is a page subscription
if (data.object === 'page') {
// Iterate over each entry - there may be multiple if batched
data.entry.forEach(function(entry) {
var pageID = entry.id;
var timeOfEvent = entry.time;
// Iterate over each messaging event
entry.messaging.forEach(function(msg) {
if (msg.message) {
console.log("received message");
const payload = {
recipient: {
id: msg.sender.id
},
message: {
text: "test"
}
};
const url = "https://graph.facebook.com/v2.6/me/messages?access_token=" + PAGE_ACCESS_TOKEN;
axios.post(url, payload).then((response) => callback(null, response));
} else {
console.log("Webhook received unknown event: ", event);
var response = {
'body': "ok",
'statusCode': 200
};
callback(null, response);
}
});
});
}
}
因此,该机器人确实成功地回显了消息,但是在我的日志中,我可以看到它多次执行。有时由于某种原因,消息在JSON中没有“消息”键,因此多次执行的结果不同。我认为这与我将消息发送回用户有关,因为当我注释掉axios.post时,问题停止了。知道为什么会这样吗?
最佳答案
@Asanka在评论中指出了这一点。基本上,facebook发送的多个事件超出了我在代码中未考虑的范围。 “消息已传递”和“消息已读”之类的东西也是我不知道的事件。我只需要在开发人员控制台中退订它们。