我正在尝试向知识库发出 POST 请求。我可以在 5-10% 的时间内从请求中得到正确的响应。所有其他时候我从服务器返回标题中的错误:
No argument passed{“Error”:{“Code”:“BadArgument”,“Message”:“Request body Is Null or Empty.”}}
我感觉这是由于 Node.js 是异步的,并且在请求通过时我的变量仍未定义。虽然,当 req.write()
包含变量时怎么办?也许我可以插入延迟以确保在发送请求之前定义变量?
var https = require('https');
var resData = "";
var options = {
host: "westus.api.cognitive.microsoft.com",
port: 443,
path: "/qnamaker/v2.0/knowledgebases/<kb-key>/generateAnswer",
method : 'POST',
headers: {
'Content-Type': 'application/json',
"Ocp-Apim-Subscription-Key":"<sub-key>",
},
};
bot.dialog('qnaReq', function (session, args) {
//call QnA Bot and ask that bot the question
var req = https.request(options, function(res) {
res.on('data', function (chunk) {
resData += chunk;
});
res.on('error', function(e) {
console.log('problem with request: ' + e.message);
});
res.on('end', function() {
if (resData.length != 75) { //75 is the length of the error I get almost every time. This line prevents the application from crashing since I am trying to access values that won't be there.
var accessibleData = JSON.parse(resData);
session.send(accessibleData["answers"][0]["answer"]);
} else {
session.send("No argument passed" + resData);
}
resData = "";
});
});
var postData = {question: session.message.text};
console.log(postData); //postData is defined
req.write(JSON.stringify(postData));
req.end();
}).triggerAction({
matches: 'IT Help'
});
最佳答案
关于node.js - POST 请求正文为 Null 或空,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45080723/