I am wrote API method, after calling that method , I got my response like
[
{
"spark_version": "7.6.x-scala2.12"
}
]
Now I want to have variable in my API method which store value 7.6.x-scala2.12.
API Controller method
[HttpGet]
public IActionResult GetTest(int ActivityId)
{
string StoredJson = "exec sp_GetJobJSONTest " +
"#ActivityId = " + ActivityId ;
var result = _context.Test.FromSqlRaw(StoredJson);
return Ok(result);
}
So how this variable should call on this response to get string stored in spark_version?
Thank you
As you have the JavaScript tag, here's how you'd do it in JS:
If you are able to call your API method, then you can just assign the response to a variable. For example, if you are calling it using the fetch API, it would look something like:
let apiResponse;
fetch('myApiUrl.com').then((response) => {
if (response.status === 200) {
apiResponse = response.body;
console.log('Response:', apiResponse[0]['spark_version']);
}
});
(I defined the variable outside the then to make it globally accessible)
I tried to get a random Wikipedia page over their API via Google Cloud Functions. The Wikipedia API works fine. This is my request:
https://de.wikipedia.org/w/api.php?action=query&format=json&generator=random
For testing you can change the format to jsonfm in see the result in the browser. Click here 👍.
But it seems that my functions get destroyed even before the request was completely successfully. If I want to parse the data (or even if I want to log that data) I got a
SyntaxError: Unexpected end of json
The log look like (for example) that (no I haven't cut it by myself):
DATA: ue||"},"query":{"pages":{"2855038":{"pageid":2855038,"ns":0,"title":"Thomas Fischer
Of course, that is not a valid json and can't be parsed. Whatever this is my function:
exports.randomWikiPage = function getRandomWikiPage (req, res) {
const httpsOptions = {
host: "de.wikipedia.org",
path: "/w/api.php?action=query&format=json&generator=random"
};
const https = require('https');
https.request(httpsOptions, function(httpsRes) {
console.log('STATUS: ' + httpsRes.statusCode)
console.log('HEADERS: ' + JSON.stringify(httpsRes.headers))
httpsRes.setEncoding('utf8')
httpsRes.on('data', function (data) {
console.log("DATA: " + data)
const wikiResponse = JSON.parse(data);
const title = wikiResponse.query.title
res.status(200).json({"title": title})
});
}).end();
};
I've already tried to return something here. Like that video explained. But as I look into the node docs https.request don't return a Promise. So return that is wrong. I've also tried to extract the on('data', callback) into it's own function so that I can return the callback. But I haven't a success with that either.
How have to look my function that it return my expected:
{"title": "A random Wikipedia Page title"}
?
I believe your json comes through as a stream in chunks. You're attempting to parse the first data chunk that comes back. Try something like:
https.request(httpsOptions, function(httpsRes) {
console.log('STATUS: ' + httpsRes.statusCode)
console.log('HEADERS: ' + JSON.stringify(httpsRes.headers))
httpsRes.setEncoding('utf8')
let wikiResponseData = '';
httpsRes.on('data', function (data) {
wikiResponseData += data;
});
httpRes.on('end', function() {
const wikiResponse = JSON.parse(wikiResponseData)
const title = wikiResponse.query.title
res.status(200).json({"title": title})
})
}).end();
};
I am trying to return the raw JSON from my server path (I use rpc for the API) with a Closure, because I want to keep it in the same function instead of using .then() and calling another one.
This is my code:
GetEntryDiscussionsFromDb(){
var url = "http://localhost:8082/discussionApi/v1/getAllDiscussions";
getRawJson(String response){
return response;
}
HttpRequest.getString(url).then(getRawJson);
return getRawJson;
}
then in my main function I do this:
var getRawJson = GetEntryDiscussionsFromDb();
print(getRawJson());
By doing so I get this error:
G.GetEntryDiscussionsFromDb(...).call$0 is not a function
Did I use Closures wrong? Is there maybe a way to return the actual raw Json inside of .then() instead of calling another function?
Thanks in advance
Not sure what you try to accomplish. What is return getRawJson; supposed to do?
getRawJson just returns a reference to the getRawJson method. When you use getRawJson
print(getRawJson());
calls getRawJson without a parameter, but it expects String response. This is why you get the error message.
You can't avoid using then. Alternatively you can use async/await
GetEntryDiscussionsFromDb(){
var url = "http://localhost:8082/discussionApi/v1/getAllDiscussions";
getRawJson(String response){
return response;
}
return HttpRequest.getString(url).then(getRawJson);
}
main
GetEntryDiscussionsFromDb()
.then(print);
or
main() async {
...
var json = await GetEntryDiscussionsFromDb();
print(json);
}
I would like to return the result of an HTTP request in my AWS Lambda function:
var http = require('http');
exports.someFunction = function(event, context) {
var url = "http://router.project-osrm.org/trip?loc=47.95,12.95&loc=47.94,12.94";
http.get(url, function(res) {
context.succeed(res);
}).on('error', function(e) {
context.fail("Got error: " + e.message);
});
}
It should return exactly what I get when I open the url directly in my browser (try it to see the expected json).
AWS Lambda return the following error message when I call context.succeed(res):
{
"errorMessage": "Unable to stringify body as json: Converting circular structure to JSON",
"errorType": "TypeError"
}
I assume that I need to use some property of res instead of res itself, but I couldn't figure out which one contains the actual data I want.
If you are using the raw http module you need to listen for data and end events.
exports.someFunction = function(event, context) {
var url = "http://router.project-osrm.org/trip?loc=47.95,12.95&loc=47.94,12.94";
http.get(url, function(res) {
// Continuously update stream with data
var body = '';
res.on('data', function(d) {
body += d;
});
res.on('end', function() {
context.succeed(body);
});
res.on('error', function(e) {
context.fail("Got error: " + e.message);
});
});
}
Using another module such as request https://www.npmjs.com/package/request would make it so you don't have to manage those events and your code could go back to almost what you had before.
I am having trouble getting the contents of JSON object from a JQery.ajax call. My call:
$('#Search').click(function () {
var query = $('#query').valueOf();
$.ajax({
url: '/Products/Search',
type: "POST",
data: query,
dataType: 'application/json; charset=utf-8',
success: function (data) {
alert(data);
for (var x = 0; x < data.length; x++) {
content = data[x].Id;
content += "<br>";
content += data[x].Name;
content += "<br>";
$(content).appendTo("#ProductList");
// updateListing(data[x]);
}
}
});
});
It seems that the JSON object is being returned correctly because "alert(data)" displays the following
[{"Id": "1", "Name": "Shirt"}, {"Id": "2", "Name":"Pants"}]
but when I try displaying the Id or Name to the page using:
content = data[x].Id;
content += "<br>";
content += data[x].Name;
content += "<br>";
it returns "undefined" to the page. What am I doing wrong?
Thanks for the help.
The data is coming back as the string representation of the JSON and you aren't converting it back to a JavaScript object. Set the dataType to just 'json' to have it converted automatically.
I recommend you use:
var returnedData = JSON.parse(response);
to convert the JSON string (if it is just text) to a JavaScript object.
It works fine,
Ex :
$.ajax({
url: "http://localhost:11141/Search/BasicSearchContent?ContentTitle=" + "تهران",
type: 'GET',
cache: false,
success: function(result) {
// alert(jQuery.dataType);
if (result) {
// var dd = JSON.parse(result);
alert(result[0].Id)
}
},
error: function() {
alert("No");
}
});
Finally, you need to use this statement ...
result[0].Whatever
One of the way you can ensure that this type of mistake (using string instead of json) doesn't happen is to see what gets printed in the alert. When you do
alert(data)
if data is a string, it will print everything that is contains. However if you print is json object. you will get the following response in the alert
[object Object]
If this the response then you can be sure that you can use this as an object (json in this case).
Thus, you need to convert your string into json first, before using it by doing this:
JSON.parse(data)
Well... you are about 3/4 of the way there... you already have your JSON as text.
The problem is that you appear to be handling this string as if it was already a JavaScript object with properties relating to the fields that were transmitted.
It isn't... its just a string.
Queries like "content = data[x].Id;" are bound to fail because JavaScript is not finding these properties attached to the string that it is looking at... again, its JUST a string.
You should be able to simply parse the data as JSON through... yup... the parse method of the JSON object.
myResult = JSON.parse(request.responseText);
Now myResult is a javascript object containing the properties that were transmitted through AJAX.
That should allow you to handle it the way you appear to be trying to.
Looks like JSON.parse was added when ECMA5 was added, so anything fairly modern should be able to handle this natively... if you have to handle fossils, you could also try external libraries to handle this, such as jQuery or JSON2.
For the record, this was already answered by Andy E for someone else HERE.
edit - Saw the request for 'official or credible sources', and probably one of the coders that I find the most credible would be John Resig ~ ECMA5 JSON ~ i would have linked to the actual ECMA5 spec regarding native JSON support, but I would rather refer someone to a master like Resig than a dry specification.
Try the jquery each function to walk through your json object:
$.each(data,function(i,j){
content ='<span>'+j[i].Id+'<br />'+j[i].Name+'<br /></span>';
$('#ProductList').append(content);
});
you can use the jQuery parseJSON method:
var Data = $.parseJSON(response);
input type Button
<input type="button" Id="update" value="Update">
I've successfully posted a form with AJAX in perl. After posting the form, controller returns a JSON response as below
$(function() {
$('#Search').click(function() {
var query = $('#query').val();
var update = $('#update').val();
$.ajax({
type: 'POST',
url: '/Products/Search/',
data: {
'insert': update,
'query': address,
},
success: function(res) {
$('#ProductList').empty('');
console.log(res);
json = JSON.parse(res);
for (var i in json) {
var row = $('<tr>');
row.append($('<td id=' + json[i].Id + '>').html(json[i].Id));
row.append($('<td id=' + json[i].Name + '>').html(json[i].Name));
$('</tr>');
$('#ProductList').append(row);
}
},
error: function() {
alert("did not work");
location.reload(true);
}
});
});
});
I'm not sure whats going wrong with your set up. Maybe the server is not setting the headers properly. Not sure. As a long shot, you can try this
$.ajax({
url : url,
dataType : 'json'
})
.done(function(data, statusText, resObject) {
var jsonData = resObject.responseJSON
})
From the jQuery API: with the setting of dataType, If none is specified, jQuery will try to infer it with $.parseJSON() based on the MIME type (the MIME type for JSON text is "application/json") of the response (in 1.4 JSON will yield a JavaScript object).
Or you can set the dataType to json to convert it automatically.
parse and convert it to js object that's it.
success: function(response) {
var content = "";
var jsondata = JSON.parse(response);
for (var x = 0; x < jsonData.length; x++) {
content += jsondata[x].Id;
content += "<br>";
content += jsondata[x].Name;
content += "<br>";
}
$("#ProductList").append(content);
}
Use
dataType: 'json'
In .NET you could also return Json(yourModel) in your action method/API controller.
And parse the returned JSON as follows in the Jquery .ajax:
if you've a complex object: navigate to it directly.
success: function (res) {
$.each(res.YourObject, function (index, element) {
console.log(element.text);
console.log(element.value);
});
});