I'm writing a RESTful service using odata4j and need to be able to set the caching header of the response.
How do I do this?
I don't seem to have access to the HttpservletResponse object.
And unlike the JAX-RS support, I can't see anything in odata4j that lets me get hold of a CacheControl object.
Thanks
Sarah
No direct support for this as of 0.5 - however you could write a custom ContainerResponseFilter to modify the outgoing response manually.
Feel free to add a feature request on the project issue list [1], along with any detail on a proposed api if you have thoughts on how this might work.
Or, of course, a patch... : )
Hope that helps,
- john
[1] http://code.google.com/p/odata4j/issues/list
Related
First you must know I'm a total beginner, I'm trying to learn so I almost don't know anything.
On the basic page of the API, there is a curl command used as an example to show us how to make requests.
I'm using Ruby on Rails so I used "curl-to-ruby" website to translate it, but it did not work as expected.
I wanted it to show me this :
uri = URI.parse("REQUEST_URL")
response = JSON.parse(Net::HTTP.get(uri))
Instead I got this :
uri = URI.parse("REQUEST_URL")
response = Net:HTTP.get_response(uri)
I don't understand any of this, I thought I wouldn't need to and just use "curl-to-ruby", but apparently I really need to get this.
Would you please try to explain me ?
Or give me links ?
Or matters to read (curl, API, http) ?
Thank you very much, have a nice day.
It's because that command doesn't return just the content, it returns the whole HTTP response object including headers and body. You need to extract the response body and parse that using JSON.parse(), e.g.
JSON.parse(response.body)
See documentation here: https://docs.ruby-lang.org/en/2.0.0/Net/HTTP.html#method-c-get_response
(Also, there is nothing in the cURL command which would hint to the converter that the content-type of the response was expected to be JSON (e.g. perhaps an "accepts" header or something), so even if it were able to produce extra code adding the JSON.parse part, it has no way of knowing that it would be appropriate to do so in this case.)
I am trying to pass multiple values for a parameter in a POST request body as follows
var1=1&var2=2&var34=3,4&var5=5
I've tried several ways to pass var34 as a string of values 3 and 4 but still not working. Need some help.
Thanks!!!
This isn't really a question about Fiddler, so it's not clear what you're asking specifically.
The server interprets POST data according to its own rules, and there's no standard for handling duplicate name/values in urlencoded data.
Some servers would accept var1=1&var2=2&var34=3,4&var5=5 as you've used, while some would prefer var1=1&var2=2&var34=3&var34=4&var5=5.
What error or problem are you encountering?
It turns out that it's the server (I use R) side that I need to adjust the codes to accommodate the POST request. It has nothing to do with the request. Thank you so much for the suggestion!
I know this question is been discussed many times but for me those solutions are not working. I want to return JSON data from my ASP.NET web API. I am hitting the end point using Firefox REST client plugin.
What I have tried:
I have specific accept header : Accept: application/json. Use accept header
Removed the XML formatter on Application_Start method
var formatters = GlobalConfiguration.Configuration.Formatters;
formatters.Remove(formatters.XmlFormatter);
This is how I return data at the end
return myModel.OrderBy(d => d.SortOrder);
Where myModel is just a class with few public property. I am not decorating this class or its property with any attribute.
But these two approach's are not working. I am still getting data in XML format :(
Please provide your suggestions.
I would like to introduce you to http://www.servicestack.net/
This is rest API framework that hooks up with .net.
It does everything what you require .
https://docs.google.com/presentation/d/16ey0MrpHOSz5N5sjctAliOgYWO3ZYeJe070fLZlPdrE/present#slide=id.i27
FROM COMMENT
Check that the application/json header is the first header and has a q=1 quality attribute: "application/json;q=1".
You can read more about quality attributes in the specs. Basically they are a way for a client of providing a preference system on the returned datatype.
To answer your other question (when I have explicitly removed the XML format in the code, why I was getting the data in XML format?), I can only guess what was going on: either the header was not setup correctly or the client was defaulting the other header to a different quality value.
Another guess could be that your way of removing the formatter is wrong: you can check this answer on SO or this article for alternative methods and see if they do the trick for you as well.
I am trying to get the data from various websites.After searcing in stack overflow, am using crawler4j as many suggested this. Below is my understanding/design:
1. Get sitemap.xml from robots.txt.
2. If sitemap.xml is not available in robots.txt, look for sitemap.xml directly.
3. Now, get the list of all URL's from sitemap.xml
4. Now, fetch the content for all above URL's
5. If sitemap.xml is also not available, then scan entire website.
Now, can you please please let me know, is crawler4J able to do steps 1, 2 and 3 ???
Please suggest any more good design is available (Assuming no feeds are available)
If so can you please guide me how to do.
Thanks
Venkat
Crawler4J is not able to perform steps 1,2 and 3, however it performs quite well for steps 4 and 5. My advice would be to use a Java HTTP Client such as the one from Http Components
to get the sitemap. Parse the XML using any Java XML parser and add the urls into a collection. Then populate your crawler4j seeds with the list :
for(String url : sitemapsUrl){
controller.addSeed(url);
}
controller.start(YourCrawler, nbthreads);
I have never used crawler4j, so take my opinion with a grain of salt:
I think that it can be done by the crawler, but it looks like you have to modify some code. Specifically, you can take a look at the RobotstxtParser.java and HostDirectives.java. You would have to modify the parser to extract the sitemap and create a new field in the directives to return the sitemap.xml. Step 3 can be done in the fetcher if no directives were returned from sitemap.txt.
However, I'm not sure exactly what you gain by checking the sitemap.txt: it seems to be a useless thing to do unless you're looking for something specific.
In Kohana 3.1.x framework.
What are the benefits to send data with internal requests like this
$post = Request::factory('module/data')
->method(Request::POST)
->post(array('some' => 'random data'))
->execute()
->response;
if you could simply send data like this
Module::instance()->data(array('some' => 'random data'));
In this example Module is a random module and data is some random method.
I'll call this Module via ajax and internal requests. I'm planning to design RESTful API.
QUESTION IS: Why use HMVC instead of just directly using an internal class API
Because they're internal requests, there is no additional HTTP request being made.
You might want to take a look at Request_Client_Internal and compare it to Request_Client_External. After that you should feel enlightened :)
Edit:
You should know that AJAX requests aren't the only "external HTTP requests". cURL, PECL HTTP, file_get_contents() and other PHP functions will also send an external HTTP request (imho you should read the RFC 2616 to understand how HTTP actually works).
With HMVC calls you can use the same controller for both Ajax and internal requests. Also, it can handle a standard (non-ajax) http-requests, form submits for example. All-in-one solution, single entry point.
If you dont want HMVC calls, you will require one call for internal request (somewhere in base controller) and another one - in a special Ajax controller. Also you may have a problems with a data rendering (usually HMVC and ajax calls are using different templates). Its not DRY.
I would comment on the above, what biakaveron said, but I can't yet, so I put it as an answer.
#stacknoob: Could you use Module::instance()->data(array(...)) as controller's action? You could - with some extra code.
Instead, what biakaveron already said, you can keep your code logic and have the action return the same result for AJAX and HMVC requests. In one place. DRY + KISS.