Wit.ai - 通过Facebook Messenger Send API发送图片

时间:2016-09-15 08:38:39

标签: javascript node.js facebook-messenger messenger wit.ai

我需要我的Wit.ai聊天机器人用图像回复某些消息,因为我已经重构了我的代码以匹配node-wit SDK中的最新信使示例,我无法弄清楚如何这样做。

以前这个FB消息功能对我有用:

var newMessage = function (recipientId, msg, atts, cb) {
    var opts = {
        form: {
            recipient: {
                id: recipientId
            },
        }
    }

    if (atts) {
        var message = {
            attachment: {
                "type": "image",
                "payload": {
                    "url": msg
                }
            }
        }
    } else {
        var message = {
            text: msg
        }
    }
    opts.form.message = message

    newRequest(opts, function (err, resp, data) {
        if (cb) {
            cb(err || data.error && data.error.message, data)
        }
    })
}

现在我已更新为node-wit SDK messenger example

const fbMessage = (id, text) => {
     const body = JSON.stringify({
     recipient: { id },
     message: { text },
     });
    const qs = 'access_token=' + encodeURIComponent(FB_PAGE_TOKEN);
    return fetch('https://graph.facebook.com/me/messages?' + qs, {
         method: 'POST',
         headers: {'Content-Type': 'application/json'},
         body,
    })
    .then(rsp => rsp.json())
    .then(json => {
         if (json.error && json.error.message) {
              throw new Error(json.error.message);
         }
    return json;
    });
};

我已经像这样修改过以尝试使图片回复工作:

const fbMessage = (id, text, atts) => {

    if (atts) {
        var body = {
            attachment: {
                "type": "image",
                "payload": {
                    "url": { text }
                }
            },
        };
    } else {
        var body = JSON.stringify({
            recipient: { id },
            message: { text },
        });
    }
    const qs = 'access_token=' + encodeURIComponent(FB_PAGE_TOKEN);
    return fetch('https://graph.facebook.com/me/messages?' + qs, {
        method: 'POST',
        headers: {'Content-Type': 'application/json'},
        body,
    })
    .then(rsp => rsp.json())
    .then(json => {
        if (json.error && json.error.message) {
            throw new Error(json.error.message);
        }
        return json;
    });
};

正常发送短信,但当我尝试发送图片附件时,我的图片网址引用只是作为字符串发送。

The FB Messenger Send API reference is here

非常感谢任何帮助!

1 个答案:

答案 0 :(得分:0)

使用它:

const fbMessage = (id, text) => {

    var x = text.substring(0,4);

    if (x == 'http') {
        var body = JSON.stringify({
            recipient: { id },
            message: {
                attachment: {
                    "type": "image",
                    "payload": {
                        "url": text
                    }
                }
            },
    });

    } else {
        var body = JSON.stringify({
            recipient: { id },
            message: { text },
        });
    }

    const qs = 'access_token=' + encodeURIComponent(FB_PAGE_TOKEN);
    return fetch('https://graph.facebook.com/me/messages?' + qs, {
        method: 'POST',
        headers: {'Content-Type': 'application/json'},
        body,
    })
    .then(rsp => rsp.json())
    .then(json => {
        if (json.error && json.error.message) {
            throw new Error(json.error.message);
        }
        return json;
     });
};

*注意 - 如果您打算发送仅仅是网址的文字回复,即{' http://example.com',这显然不会奏效。要解决此问题,您可以在邮件中的网址地址前面添加任何符号,如下所示:'> http://example.com'和链接将正常工作。