So I have been supplied an URL for an "exposed JSON endpoint" similar to one found here-only difference is the functions are different. First of all what does this mean("exposed JSON endpoint") ? And how do I call this web service ? I have used web services like the Google Maps with C# where I would download and parse the XML from URL and use the data. But with this, I have no idea how to use the service. (any code in Javascript, C#, Java is fine). Thanks for any help !
An "exposed JSON endpoint" is a publicly available URL (sometimes with query or path parameters added by you) which you can send an HTTP request to and it will return JSON from the remote server that is related to the request you sent.
You then parse the returned JSON (into the structure of whatever programming language you are using) so you can then use the returned data in your own code.
Maybe you can try something like this:
WebClient client = new WebClient();
Stream stream = client.OpenRead("Endpoint");
StreamReader reader = new StreamReader(stream);
Newtonsoft.Json.Linq.JObject jObject = Newtonsoft.Json.Linq.JObject.Parse(reader.ReadLine());
As the service end point states:
You need to include the following element in your page
<script src="http://orc.csres.utexas.edu/orchard/json/compiler?js"/></script>
Then you call the service using something like this
try {
compilerService.compile(
{
devKey : "key",
program : "program"
},
function(returnValue) {
// it worked do something with returnValue
console.log(returnValue);
},
function(response, status, exception) {
// something went wrong
console.log(response);
console.log(status);
console.log(exception);
}
);
}
catch (e) {
console.log(e);
}
Related
How to be confirmed whether a backbonejs .save() is sending PUT request ?? I checked my server side, which is working good, there is no problem in server side. But my .save() is not working.
Here is my model of backbone
define(['underscore','backbone'],function(_,Backbone)
{
var my_model = Backbone.Model.extend(
{
urlRoot: "http://localhost/back/server_file.php/number"
});
return my_model;
});
Here is how I am using .save()
var my_data = {
id: data.id,
code: data.code
};
var My_model = new my_model();
My_model.save(my_data,
{
success: function(response)
{
alert('Yes');
},
error: function(response)
{
alert('No');
}
});
I think my .save() is sending POST request to server.
UPDATE
I think I could find out my problem. I am describing that here.
What I would like to do
I would like to send 2 parameters from backbonejs model to server side script (I am using PHP SLIM Framework). Based on those 2 parameters server side script update a record's(2 field of this record match with those 2 parameters ) another field with a static parameter at database.
What backbonejs provide (As I think )
Backbonejs has a model with id as JSON format. Backbonejs sends PUT request to server side script. Server side script just dump (update) the data(which was as JSON format,like a bundle) to the database with matching id. Serer side script would not like to look inside the data.
I am getting (from network tab of firebug) my PUT request URL is like http://localhost/back/server_file.php/number/1 (This is the id) . On the other hand I would like to get URL is like http://localhost/back/server_file.php/number/1 (id the first parameter)/456 (Second parameter).
If I am right, anyone could say how can I implement my plan??
This should work,
My_model.set(my_data);
My_model.save(null, {
wait : true,
url : "http://localhost/back/server_file.php/number/1/456",
success : function(response){
},
error : function(e){
}
});
You can debug the request being sent in network tab of Chrome Developer Tools or you can use a network tool like Fiddler to see all requests.
Refer the attached on where to see the request method being used.
Relatively new to Parse, but can't seem to find any help on this topic although it seems to be a basic thing to do.
In a cloud function, I am requesting JSON data from an API and want to turn this data into a PFObject so that I can access the data from an iOS app much quicker than just calling the data straight from the API. At the moment in my cloud function I have the following code which is happily retrieving the data. I have tried for a while now but not been able to create a Parse object from this JSON data. As an example I have put the facebook website API in.
Parse.Cloud.define("updateUniversities", function(request, response) {
Parse.Cloud.httpRequest({,
url: 'https://graph.facebook.com/alex.tsaptsinos',
success: function(httpResponse) {
response.success(httpResponse.data)
},
error: function(httpResponse) {
console.error('Request failed with response code ' + httpResponse.status);
response.error(httpResponse.text);
}
});
});
I assume that I will have to create my object in the success part and then create and instance of it and manipulate it somehow, something along the lines of:
var NewObject = Parse.Object.extend("Object");
var newObject = new NewObject();
//manipulation
Any help would be amazing, thanks a lot!
Im working in an application that uses java + spring on the server side aswell as extdirectspring. On the client side it uses extjs/javascript.
I want to poke a method on the serverside and retrieve a file from the database. If the file doesn't exist then I'd like to display an error in some way.
The attempt to retrieve the file and the check it exists need to happen in the same call - the file could be deleted in between calls.
The way I can see people have done it in the current application is using spring controllers + request mappings and a window.open("someUrl/filename.blah"); with the server returning the file from the mapped method.
This doesnt seem to let you handle the case where the file doesn't exist though.
Ideally I'd just like to send some json back from the server which has the file data (possibly null) and sucess/failure. When I get the response I can then either show some information about the failure or open the file. Unfortunately I can't observe the current failure mode because something somewhere is caching the files - if I delete them from the database then they appear to still exist and you can still download them!
By 'open' I mean show the standard 'what do you want to do with this file open/save' dialog. I'm not trying to parse the file or do anything with it - I just want to serve it up to the browser/user.
Is there a way to do that without using a url and window.open? Eg some method that takes a blob of data and a file name or similar?
Update
The transfer of the data/json isn't the problem I'm trying to solve.
As I'm using extdirect I'll probably just do it like this:
public class SomeClass
{
#ExtDirectMethod
public AFile getFile(Long id) throws Exception
{
//do stuff
}
}
Then on the clientside you just do:
someClass.getFile(id, function(file){
if(file.found){
SomeHowGiveThisToTheUser(file.name,file.data); ????
return;
}
ReportCouldntFind(file.name);
});
The bit I dont know how to do is the give the file to the user.
Further update
I dont think it's possible to do this without blob urls or data uri's. Both of these are mentioned in this post. I haven't tried them out as we are having to support a browser that is too old for both techniques.
You are wanting to do some standard Ajax (Assuming you have jQuery available).
Something like:
$.getJSON( url, function( data ) {
if (data.success){
} else {
}
});
And on the server side, add code to return the expected JSON.
In extJS:
Ext.Ajax.request({
url : url,
method: 'GET',
headers: { 'Content-Type': 'application/json' },
params : params,
success: function (response) {
var jsonResp = Ext.util.JSON.decode(response.responseText);
if (response.success){
// do success stuff, like using response.fileData
} else {
// do fail stuff
}
failure: function (response) {
var jsonResp = Ext.util.JSON.decode(response.responseText);
// etc.
});
On the server in a Java servlet you could something like this (assumes apache commons file util):
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
InputStream in = new URL( "http://remote.file.url" ).openStream();
IOUtils.copy(in, response.getOutputStream());
}
Probably a more spring specific way to do it, but that gives you an idea.
For your case, you want to wrap the file contents in a JSON object that includes the success proeprty. For that, use the Java JSON jar: http://json.org/java/
Update: Finally understand what you are asking.
It finally occurred to me that you are asking how to handle the actual download.
There's a couple ways these days.
Take a look at this SO answer, this is using an iFrame: Download File Using Javascript/jQuery
There are also several fancy downloader components, including several for jQuery.
So you would do a two part process: check for the file availability using a standard ajax call, and then if response.success, use the downloader to serve the file to the user.
The situation is that i am trying to get d3 to read a JSON file which is stored in Windows Azure Blob storage. If i paste the url into a browser then the file is downloaded to my machine. I would like to be able get the JSON file from the url with d3, but no graph is produced which leads me to believe that the d3 is unable to read the file.
Here is a snippet of the code:
var url = "http://storageName.blob.core.windows.net/containerName/file.json";
d3.json("url", function (json) {
//code here
})
I have set the container to public on Azure, so i believe that it should be accessible to anyone with the url. Any suggestions?
Should be:
var url = "http://storageName.blob.core.windows.net/containerName/file.json";
d3.json(url, function (json) {
//code here
});
Relevant for 2019:
d3.json("http://127.0.0.1:8080/mydata.json").then( data => {
console.log(data);
})
you'll have to set the Content-Type http header to "application/json" on your blob.
It can be done programmatically or using the rest API, or using a free utility like cloudberry explorer for azure blob storage.
For REST api use d3.request:
d3.fetch("api_url/path")
.header("Content-Type", "application/json")
.post(function(data) {
console.log(data);
})
I am trying to make a request to a SOS service using Openlayers like this (part of the code):
var params = {'service':'SOS','version':'1.0.0','request':'getCapabilities'};
var paramString = OpenLayers.Util.getParameterString(params);
url = OpenLayers.Util.urlAppend(this.url, paramString);
OpenLayers.Request.GET({url: url,
success: this.parseSOSCaps, scope: this,
failure: alert(url)});
}
For some reason the url that I produced in this code is not correct. The failure function, alerts this url:
http://cawa.gfz-potsdam.de:8080/SOS/sos?service=SOS&version=1.0.0&request=getCapabilities
I also tried manually, through my browser to send the request (using the above url) but it doesn't work. I am sure that the host server is correct.
My questions are: what am I doing wrong? Is the above format of the url wrong? What would be the alternative? Perhaps to send the request in XML format?
Thanks
Dimitris
After all I managed to make the above code to work. There is not a bug in the code. The problem was that I haven't included in the allowedHosts of the proxy.cgi (wamp\bin\apache\apache2.2.22\cgi-bin\proxy.cgi) file, the host of the service. After I did it was working perfectly.