I need to connect to an asmx webservice using javascript. the webservice accepts and returns a soap response. im looking for an example bit of code of how i can connect to the webservice using javascript. it returns lat and long details which i'll then use to plot markers on a google map. i also have the issue of cross domain scripting...
should i provide and example of the soap response?
thanks.
There are some JavaScript SOAP client libraries out there:
jQuery SOAP Client
JavaScript SOAP Client
Those libraries will allow you to easily make a SOAP Request and handle the results.
I strongly suggest that you implement the SOAP client on your web domain. Let the JS call your server, which in turn calls the ASMX. The response of the web service should then be converted to a suitable JSON on your server before sending it down to the client.
This way, you get rid of your cross-domain problems, you don't load a SOAP client in the browser, you transmit less wordy data to the client, and you have the option of caching web service calls at your server to speed things up if you want to.
Related
I want to get data from a public API:
https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?limit=1500&CMC_PRO_API_KEY=...
I don't understand why I'm getting a CORS error
Here a really simple Fiddle JS to see the error : http://tpcg.io/51kVwI
Thank you for your help :)
From: https://coinmarketcap.com/api/documentation/v1/#section/Quick-Start-Guide
Note: Making HTTP requests on the client side with Javascript is currently prohibited through CORS configuration. This is to protect your API Key which should not be visible to users of your application so your API Key is not stolen. Secure your API Key by routing calls through your own backend service.
They have example code for sending the request through a server, such as Node.js.
There's no way to hide API Key in Javascript, that's why the endpoint didn't allow client side (Javascript) to call it. You will need to make the request from server side. There are several serverless options with free tier out there, AWS Lambda, Google Cloud Functions, Azure Functions.
I need to create a web page that gets data from an SQL database, and can run certain executables (that have already been written from previous projects).The code to retrieve data from SQL was written in C#, as it was used previously with ASP.NET. Is it possible to reuse all of this code the way it is with my current application (using Angular)?
How to set up the server side? I know I probably have to create a web server, and then use "get" and "post" requests from the client side, am I on the right track. Can JavaScript client side communicate with a C#-written server side?
Unequivocally yes, you can have a JavaScript frontend communicate with a C# backend. There are two primary MS provided technologies that can be used:
ASP.NET WebAPI
SignalR
And lots of 3rd party ones (like Nancy).
WebAPI is a simple HTTP server typically used to build RESTful backends. Given your description its probably what you want to use.
SignalR is a protocol for "push" applications (though it can be used for server invocations). If you don't need to call client-side code its a bit overkill.
On the client side, if using WebAPI or similar on the backend, you just do HTTP requests as you would against any standard API. For AngularJS that's done with the $http service, for Angular (2+) that's Http and for 4+ HttpClient.
I am new in nativescript app development, I want to use SOAP web services in nativescript, i.e how to implement SOAP request & response in nativescript. Please give me suggestions, didn't find any way to implement SOAP, all search results are implemented in JavaScript code.
I do open github issues, please check - https://github.com/NativeScript/NativeScript/issues/2284
Thanks :)
Well, their is no built in soap handling. However, you can make you own in a couple steps.
NativeScript has built in http requests, and XMLHttpRequest and Fetch; this means you can query and receive back data you want from any service url. http://docs.nativescript.org/api-reference/modules/http.html, https://docs.nativescript.org/cookbook/fetch, http://docs.nativescript.org/cookbook/http
In addition, their is a third party plugin called nativescript-apiclient which makes it easier to deal with http requests with changing parameters. (i.e. http://somewhere/getdata/{token}/{data} where you can just pass in a token and data value...) See http://plugins.nativescript.rocks for different plugins available.
NativeScript has a XML parser built in, Soap responses are typically XML based. So you can easily instantiate the xml engine to parse your soap requests (http://docs.nativescript.org/cookbook/xml-parser)
I am new to web services so please help me to sort out my issue. I have a requirement to create a web service in C#. This web service will return the soap response.
my webservice should send response as a soap message, Is there any exmple of client and server which send an receive soap message , it is a non wcf webservice i tried with msdn but cant grab it.
thanks for any help....
You can try Fiddler or SOAPUI tool.
Using Fiddler, You can issue requests and get response from your Webservices locally.
Very efficient for testing your webservices locally on your m/c.
You can create a web service as an "ASP.Net Website" project in visual studio. Then you can add .asmx (web service code behind file) to your project. You can define your web methods in asmx file which may return xml as response. Then you have to publish and host the web service in IIS.
In client side project, you can add the reference to the webservice by using "Add Service reference" option in visual studio that will generate classes through which you can access your web service. Then you can call your web methods through those classes.
when you are adding service reference in client side, you have to give the url of the wsdl file of your web service to locate it.
I want to connect to a Java Restful webservice that uses SSL from a Javascript client.
I could write standalone Java client that connects to the keystore and imports the certificates and could connect successfully.
How can I achieve the same thing using Javascript, XMLHttpRequest.
Thanks in advance for any pointers.
I'm not entirely sure I understand your question. But, to make a SSL asynchronous request against a server with JavaScript, the only change you need to make is to use https in your RESTful target URL instead of http.