我有一个使用基本身份验证的外部API端点,我正在尝试从JSON响应中查找特定的键和/或值。
结果:
hrefsOnly返回一个包含两个项目的数组。
[
"https://192.168.254.133/api/json/v2/types/volumes/1",
"https://192.168.254.133/api/json/v2/types/volumes/3"
]
调用hrefsOnly [1]显示以下JSON响应:
{ "content": {
"ancestor-vol-name": null,
"small-io-alerts": "disabled",
"last-refreshed-from-obj-name": null,
"small-iops": "0",
"wr-latency": "1738",
"obj-severity": "information"
}}
volumeInfo在我的代码中未定义如下:
const express = require('express');
const app = express();
const request = require("request");
const bodyParser = require('body-parser');
const auth = 'YWRtaW46WHRyZW0xMA==';
//Get Volume api endpoint values
var getVols = {
method: 'GET',
url: 'https://192.168.254.133/api/json/v2/types/volumes/',
headers:
{
'cache-control': 'no-cache',
Accept: 'application/json',
'Content-Type': 'application/json',
Authorization: `Basic ${auth}`
}
};
//Get above api endpoint data
var volsData = {
method: 'GET',
url: 'https://192.168.254.133/api/json/v2/types/volumes/1',
headers:
{
'cache-control': 'no-cache',
Accept: 'application/json',
'Content-Type': 'application/json',
Authorization: `Basic ${auth}`
}
};
var hrefsOnly = [];
var volumeInfo = [];
//GET request to parse hfref data only
request(getVols, function (error, response, body) {
var data = JSON.parse(body);
if (error){
console.log('error: ', error);
} else {
for(var i = 0; i < data["volumes"].length; i++){
hrefsOnly.push(data["volumes"][i].href);
}
}
});
app.get('/url', (req, res, next) => {
res.send(hrefsOnly);
});
// GET Volumes JSON response
request(volsData, function (error, response, body) {
var vols = body;
if (error){
console.log('error: ', error);
} else {
for(var elem in vols){
volumeInfo.push(vols);
}
}
});
app.get('/volume', (req, res, next) => {
console.log(volumeInfo["content"]);
res.send(volumeInfo["content"]);
});
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
app.listen(3000, () => {
console.log("Server running on port 3000");
});
我希望当我访问页面localhost:3000 / volume时从API返回内容部分。该页面显示为空白。 console.log(volumeInfo [1])显示JSON数据,但是volumeInfo [1] .content未定义。不知道该怎么做才能得到“未定义”的结果。
答案 0 :(得分:0)
var volumeInfo = [];
,但您将其用作 map res.send(volumeInfo["content"]);
res.send(volumeInfo[0].content);