如何从lambda函数调用POST API ?

Question

我正在尝试使用Node.js 12.x从lambda函数集成POST API调用。

我试了如下:

var posturl = "My post api path";
var jsonData = "{'password':'abcdef','domain':'www.mydomain.com','username':'abc.def'}";
var req = require('request');
const params = {
url: posturl,
headers: { 'jsonData': jsonData }
};
req.post(params, function(err, res, body) {
if(err){
console.log('------error------', err);
} else{
console.log('------success--------', body);
}
});

但是当我使用状态机执行它时，我得到了下面的异常:

{
"errorType": "Error",
"errorMessage": "Cannot find module 'request'nRequire stack:n- /var/task/index.jsn- /var/runtime/UserFunction.jsn- /var/runtime/index.js",
"trace": [
"Error: Cannot find module 'request'",
"Require stack:",
"- /var/task/index.js",
"- /var/runtime/UserFunction.js",
"- /var/runtime/index.js",
"    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)",
"    at Function.Module._load (internal/modules/cjs/loader.js:667:27)",
"    at Module.require (internal/modules/cjs/loader.js:887:19)",
"    at require (internal/modules/cjs/helpers.js:74:18)",
"    at Runtime.exports.handler (/var/task/index.js:8:14)",
"    at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)"
]
}

这里posturl是我的api路径，jsondata是我的键值对数据。

那么我如何从lambda函数调用POST API ?当调用API时，我如何传递整个jsondata键?如何解析服务调用后的响应?

更新:我已经尝试过下面的

我所有的细节都传递一个关键jsonData，在哪里我可以指定?如果没有这个键，它将无法工作。

exports.handler = (event, context, callback) => {
const http = require('http');
const data = JSON.stringify({
password: 'mypassword',
domain: 'www.mydomain.com',
username: 'myusername'
});
const options = {
hostname: 'http://abc.mydomain.com',
path: 'remaining path with ticket',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': data.length
}
};
const req = http.request(options, (res) => {
let data = '';
console.log('Status Code:', res.statusCode);
res.on('data', (chunk) => {
data += chunk;
});
res.on('end', () => {
console.log('Body: ', JSON.parse(data));
});
}).on("error", (err) => {
console.log("Error: ", err.message);
});
req.write(data);
req.end();  
};

Answer 1

source: How Make HTTP Post Request using Node.js

const https = require('https');
const data = JSON.stringify({
name: 'John Doe',
job: 'Content Writer'
});
const options = {
hostname: 'reqres.in',
path: '/api/users',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': data.length
}
};

const req = https.request(options, (res) => {
let data = '';
console.log('Status Code:', res.statusCode);
res.on('data', (chunk) => {
data += chunk;
});
res.on('end', () => {
console.log('Body: ', JSON.parse(data));
});
}).on("error", (err) => {
console.log("Error: ", err.message);
});
req.write(data);
req.end();