Hi i am getting No **Access-Control-Allow-Origin** header is present on the requested resource when i am hitting spring URL using ajax call
any once can help me to resolve this ...
You need to adjust on your server side, not inside your app. Even you using JSONP, it still not working.
in web service, just add the #CrossOrigin(origins = "", allowedHeaders = "")
for crossbrowser service call requires access.
Related
Render Html/js from server side in Spring boot .I want that when there is a backend REST Api call .I want to render everything in js but not using jsp .I want to know how to use viewResolver so that I can do it in js using xhr requests and html .
Thanking you in advance ,any help will be extremely helpful
I don't know if i understood your problem correctly but for spring there is a good extension Hateoas to build RESTful APIs. There you can define how to render your output.
https://spring.io/guides/gs/rest-hateoas/
I´m working on an ASP.NET MVC project, that does the following:
Users collect data using an android app, this data is being sent as json. This app is under development by someone else, not me, but we´re in contact.
I created a JSONController with the following action:
[HttpPost]
public JsonResult PutJSON(JSONModel json){
// do something
}
My JSONModel only contains a public string LastName for testing purposes.
For now, I can only publish the project to IIS on localhost, which can be accessed from other devices in my home network. As far as I know, that should be okay for testing, right? The project is accessible and works when entering the ip of that machine in a browser on another device in network.
Is there anything else I need to do in my ASP.NET MVC project to make it accept AJAX calls from "outside"? Am I missing something?
I tried to test with a simple AJAX call from another device, but that´s just giving me internal server errors, because of cross domain call. Accepting those cross domain calls didn´t work though (do I need this when the project is finally being published?)
I´d be very thankful if someone could help, maybe by providing a link to a tutorial explaining how to configure ASP.NET project to accept AJAX calls from the internet.
Please take a look in the following question:
How to pass JSON POST data to Web API method as object
How to receive JSON data on WebAPI backend C#?
How to receive JSON as an MVC 5 action method parameter
How to receive JSON in asp.net web API?
Hope these will help you.
I trying to create a freeboard dashboard. I have a Arduino with four sensors that send their informations by mqtt. So, I on Node-RED I gen a JSON to response get request in /saida.
[{"id":"3f699b5.c91f064","type":"http response","z":"c7d4e8c8.509218","name":"","x":1184,"y":589,"wires":[]},{"id":"a3ed6250.1d64","type":"json","z":"c7d4e8c8.509218","name":"","x":1120.5,"y":540,"wires":[["3f699b5.c91f064"]]},{"id":"971f41c1.a1265","type":"function","z":"c7d4e8c8.509218","name":"","func":"msg.payload = {\"temperatura\":\"25\"}\nreturn msg;","outputs":1,"noerr":0,"x":1015.5,"y":584,"wires":[["a3ed6250.1d64"]]},{"id":"ed9f7a2a.604728","type":"http in","z":"c7d4e8c8.509218","name":"http in","url":"/saida","method":"get","swaggerDoc":"","x":850,"y":582,"wires":[["5b40d38c.5cc7ec","971f41c1.a1265"]]}]
In this moment, I`m using a static JSON to make a test. I have a use the host like:
my-public-host:1880/saida -> {"temperatura":"25"}
I access it by a proxy, the JSON returns ok. On ping.eu port check, the port is open. I ensure that my host is public.
But on my freeboard, I add it as datasource, then it says "never" update and I can`t read the JSON info.
What I should do to solve it?
I solved my problem.
There is a bug in freeboard.io. the thingproxy.freeboard.io don't work. The the browser don't let the freeboard.io make AJAX request for other link that isn't https. Besides, the browser don't let make a AJAX request for an other host.
There is two solutions:
Use sitelock on your host and add Access-Control-Allow-Origin to you response headers.
Use a https proxy and a browser extension to allow cross access.
bye!
Correct.
If the data source is flask based app, you can follow this link below to make freeboard read.
https://flask-cors.readthedocs.io/en/latest/
I have created a Liferay Web Service and made it accessible via JSON.
I call successfully call and use the JSON WebService using this URL:
https://localhost:8080/api/jsonws/my-portlet-name/my-method/time-unit/HOUR/class-name/TEST
I have annotated my Web Services like this:
#com.liferay.portal.security.ac.AccessControlled(guestAccessEnabled = true, hostAllowedValidationEnabled = false)
When I am using this call locally (http) I have no problems.
As soon as I deploy it to our test server (https) I do get "Forbidden - no permissions to access this resource".
What can I do to access my JSON Web Service calls ?
Ok, honestly : I don´t know if there is an answer for that ;)
I have used the Liferay.Service js call to do the same and it works.
So no more URL calling from jQuery ...
I am building a webapp using AngularJS on top of a MarkLogic 7 XML database. I am using the REST API provided by MarkLogic to access the database. The code I'm using in my controller is as follows.
app.controller("mainController", function($scope, $http){
var addr = 'http://localhost:8011/v1/search?q=test&options=newtest';
$http({method:'GET', url: addr})
.success(function(data){
alert('Success');
console.log(data);
});
});
Now, when I open my view, a 'bad request' error is logged in the console.
OPTIONS http://localhost:8011/v1/search?q=test&options=newtest 400 (Bad Request)
angular.min.js:99
OPTIONS http://localhost:8011/v1/search?q=test&options=newtest No 'Access-Control-Allow-
Origin' header is present on the requested resource. Origin 'null' is therefore not
allowed access. angular.min.js:99
XMLHttpRequest cannot load http://localhost:8011/v1/search?q=test&options=newtest. No
'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null'
is therefore not allowed access. index.html:1
Are there any settings to be configured on the MarkLogic server to make the API accessible? Please help.
Thanks,
Krishna
Krishna, is your AngularJS code hosted by MarkLogic, or are you running it in node.js (via grunt, perhaps)? This looks like a cross-site scripting problem. Two solutions come to mind:
If you don't need a middle tier, MarkLogic can host the Angular code. Put it in the modules database of the app server on port 8011. Then the request is going to the same place the JS came from and the problem goes away.
If you want to keep a node layer, set up a proxy. Assuming you're using Grunt, you can see how I handled that in the Gruntfile.js of an app with the same stack.
Once you get past that error, you might consider moving the interaction with the MarkLogic REST API into a service. The Demo Cat application I linked to above has an early version of an MLRest AngularJS service; that might be a useful starting point.