I am building a mobile application for Redmine. So, to get data from the Redmine server, I need to authenticate the user by passing his password and username. In Redmine API documentation, two methods are mentioned for authentication.
using your regular login/password via HTTP Basic authentication.
using your API key which is a handy way to avoid putting a password
in a script. The API key may be attached to each request in one of
the following way:
- passed in as a "key" parameter
- passed in as a username with a random password via HTTP Basic
authentication
- passed in as a "X-Redmine-API-Key" HTTP header (added in Redmine
1.1.0)
I tried to send a get request as follows, I can see the issue list in response to the Get request in browser. But the success callback is not triggering.
var url= "http://username:password#redmine.qburst.com/issues.json";
$http({
method: 'JSONP',
url: url
}).
success(function(data, status) {
console.log(data);
}).
error(function(data, status) {
console.log("Error "+status);
});
The following error is coming in console.
SyntaxError: missing ; before statement
{"issues":[{"id":139989,"project":{"id":215,"name":"Book Meeting Room
Error status is 0.
Different to standard JSON, JSONP responses should be wrapped in a function call.
Instead of:
{"issues":[{"id":139989,"project":{"id":215,"name":"Book Meeting Room...
You should be getting something like the following from the server:
handler({"issues":[{"id":139989,"project":{"id":215,"name":"Book Meeting Room"}}]});
I ran into a similar issue and found that passing the callback or jsonp parameter with a handler name solved it. More info here in the redmine documentation.
In jQuery this would be my request:
$.get('someurl', {'callback': 'foo'}, function (data, status, xhr) {
... request logic ...
}, 'jsonp'
);
...and this would be your request with the callback parameter:
$http({
method: 'JSONP',
url: url,
callback: 'something'
}).
success(function(data, status) {
console.log(data);
}).
error(function(data, status) {
console.log("Error "+status);
});
This may not help you with the authentication woes but will hopefully get you past this error.
Related
This question already has an answer here:
Why does my JSONP request give me Uncaught SyntaxError: Unexpected token < (less than)?
(1 answer)
Closed 5 years ago.
We are working on java project in which backend is java + spring and fronted is angular 2 + HTML.
I want to do cross domain html parsing but we don't have permission to access external links on server side as we have some security issues for outsite domains, so we have to get the DOM content of link on client side using jquery.
I have tried these:
var url = "http://xyz.aspx";
$http({
method: 'JSONP',
url: url,
params: {
format: 'jsonp',
json_callback: 'JSON_CALLBACK'
}
}).
success(function(response) {
$scope.test = response;
}).
error(function(status) {
//your code when fails
});
The external link which I need to parse contains many href links. I also need to parse content of those links.
Have tried above mentioned code:
getting error in console - Uncaught SyntaxError: Unexpected token < on
xyz.aspx page
What will be best solution to get content of the pages and pass to server side for parsing?
Solution 1)
getting error in console - Uncaught SyntaxError: Unexpected token < on xyz.aspx page
This means that the server callback isn't a valid JavaScript application. Please ensure your server returns a valid JavaScript application. In that way this error will go away. JSONP needs a valid JavaScript application response to make it work. For example this is how a JSONP callback should look like:
jsonCallback(
{
sites: [
{
siteName: "Test"
}
]
}
);
Solution 2)
If your server side does not return a JSON Object try to use a GET request and enable CORS.
$http({
method: 'GET',
url: "http://xyz.aspx",
}).success(function(response) {
$scope.test = response.data;
}).error(function(status) {
//your code when fails
});
Solution 3)
If you are still be unable to add CORS to your backend you could create an PROXY application yourself. This for example is an public CORS Proxy https://crossorigin.me/. Adding an example on how to create a proxy service would be to much. Please research by yourself. There are a lot of examples in the web.
See ng.$http. Your URL is missing the callback parameter,instead of giving like
json_callback: 'JSON_CALLBACK'
Try below way
$http({
method: 'jsonp',
url: 'http://xyz.aspx?callback=JSON_CALLBACK',
params: { name: 'xyz' }
}).success(function(data, status , header, config) {
console.log('success');
}).error(function(data, status , header, config) {
console.log('error');
});
What is wrong with this code:
function mainCtrl($scope, $http) {
function loadData(){ $http.jsonp('http://www.pais.co.il/Lotto/Pages/last_Results.aspx?download=1')
.then(function (data, status, headers, config) {
console.log(data);
},
function (data, status, headers, config) {
console.log(data);
});
}
loadData();
};
I have a simple call to a URL.
I can see in my network that it was a success (200).
But my the response is beeing catch in the error function:
You aren't getting a 404 error. You are getting an invalid JS error.
You are making a JSONP request. The URL is returning CSV data, not JSONP.
You need to either:
Use a URL that returns JSONP
Use XMLHttpRequest instead of <script> (which is what $http.jsonp does behind the scenes) to load the data and ensure that the suitable Access-Control headers are set to give your JS permission to read the data
Fetch the data from your server instead
I got this page which uses Angular and when the page is loaded, it requests some data from a HTTP get call. My problem is that if the user navigates to a other page while the HTTP get call is going on, the system gives a error and then gives me the HTTP error callback showing the alert with "Error".
$http.get('/api/something/).success(function (data, status, headers, config) {
alert(data);
}).error(function (data, status, headers, config) {
alert('Error');
});
What I want instead is to just abort the http call and then move the user to the other page without the error function being called.
So far I found this.
But I can't see how I can use it to fix my problem.
Im stuck at this 2 days I can not find a solution.
When im doing an AngularJS POST it Sends OPTIONS in the header and returns error from the API the code looks like this nothing special.
$http.defaults.headers.post["Content-Type"] = "application/json";
$http.post(URL, JSON.stringify(data)).
success(function(data, status, headers, config) {
alert(data);
error(function(data, status, headers, config) {
console.log("Error");
});
CORS is enabled on the API it has the Headers, when i do POST with fiddler or POSTMan in Chrome it works fine only when i use angularJS post it won't go thru.
why do i get OPTIONS /SubmitTicket HTTP/1.1 instead of POST?
What do i need to do to POST ? I have read about it it says something like CORS is adding OPTIONS header but why?
When you invoke the CORS requests, the browser always sends the OPTIONS request to server to know what methods are actually allowed. So this is the desired behaviour. This is so called: "Preflighted request", see: http://www.nczonline.net/blog/2010/05/25/cross-domain-ajax-with-cross-origin-resource-sharing/ (section: "Preflighted requests")
Therefore in your case, you have to allow the OPTIONS method in 'Access-Control-Allow-Methods' header of your CORS filter.
My understanding is that angular initially sends an OPTIONS request to the server in order to ask the server if the full request is permissable.
The server will then respond with Headers specifying what is and is not allowed.
I guess this might be an issue with the server returning the wrong CORS headers.
You said that the server returns an error please post that error here.
See Preflighted CORS request at: http://www.staticapps.org/articles/cross-domain-requests-with-cors
and
AngularJS performs an OPTIONS HTTP request for a cross-origin resource
// Simple POST request example (passing data) :
$http.post('/someUrl', {msg:'hello word!'}).
success(function(data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
}).
error(function(data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
});
Should only need to do this code to get it to work:
angular.module('TestApp', [])
.factory('someService', ['$http', someService]);
function someService() {
var service = {
save: save
};
var serviceUrl = '/some/Url';
return service;
function save(data) {
$http.post(serviceUrl, data)
.success(function(data, status, headers, config) {
alert(data);
})
.error(function(data, status, headers, config) {
console.log("Error");
});
}
}
Then pull your someService into your controller and use:
someService.save(data);
I'm using Expressjs as an API and I'm using angular to hit that POST. I would like to respond to the redirect that express is sending. Success from my Angular POST returns a HTML of the page I intend to redirect to but nothing happens on my DOM. I can see that my redirect is working in my network traffic, and that console.log data, below contains the DOM of the redirected page.
How can I refresh the DOM, to reflect this successful POST, or handle the "redirect"?
ANGULAR CODE:
$http({method: 'POST', url: '/login', data:FormData}).
success(function(data, status, headers, config) {
console.log(data)
}).
error(function(data, status, headers, config) {
});
$scope.userName = '';
Expressjs API:
app.post('/login', function(req, res){
var name = req.param('name', null); // second parameter is default
var password = req.param('password', "changeme")
// Lots Authenticationcode
// returns succesfful login
res.redirect('http://localhost:3000/');
}); // end app.post
console.log(data) (from Angular POST success)
returns the HTML of the page I intended to redirect to
AngularJS is meant to work as a client-side framework coupled with (mostly) RESTfull APIs. Your login API isn't supposed to return a HTML, it is supposed to return the instruction to redirect. So in your case you should simply call $location.url('/') in your $http success callback, which would use the Angular router to "redirect" to '/' (the root URL).