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I have json rpc 2.0 server written in php. Currently I'm looking for a library that allows auto generation json rpc requests instead of using manual serialization.
I found a bunch of different libraries and really don't know which is more convenient. Did anybody successfully use one?
The best library json I've ever found is JSON-RPC 2.0
For making requests you will need base part of library. But if you want automatically handle server resonces you can take a look at client library. There are pretty much easy to understand tutorials. Hope it will help.
android-json-rpc is a pretty simple library.
Here is the documentation.
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Play framework 2.5.0 Websockets example.
in play 2.5.0 websockets code is changed to support akka streams but I'm not able find a sample code to use it.
This will be properly documented in 2.5.1 as you can see here: https://github.com/playframework/playframework/issues/5057
In the meantime you can take a look at the Migration Guide which has a part on Streams:
https://www.playframework.com/documentation/2.5.x/StreamsMigration25#Migrating-WebSockets-%28WebSocket%29
You will notice that the important part is the WebSocket.MappedWebSocketAcceptor<In,Out> class. You use this one to tell Play how to convert Message frames to your own types - like String, Json, etc.
Fortunately the Java API of Play provides some predefined implementations. Let's say you want to handle WebSocket connections which exchange JSON data. Then you would use WebSocket.Json (https://github.com/playframework/playframework/blob/master/framework/src/play/src/main/java/play/mvc/WebSocket.java#L71)
return WebSocket.Json.accept(requestHeader -> {
// returns a Flow<JsonNode, JsonNode, ?>
})
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I just want to find a light weight framework or lib based on which rest-style service can be registered. I will use tomcat or jetty as the web server.
Is there an appropriated one?
also look at activeweb . It allows creating of resful controllers.
Loot at dropwizard too
Take a look at jooby It has a nice java8 syntax for defining routes and supports websockets too. It also has a great module system and a bunch of ready modules that range from assets preprocessing to orm integration.
Perhaps Restlet is what you are looking for. I found it's handling very easy and comfortable.
http://www.restlet.org/
Another one is Jersey.
Play framework seems like a considerable option: www.playframework.org, I'm thinking of creating my next software project in this framework.
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I need a fast way to extract data from json responses a I get from a webservice.
By fast, I mean fast for the programmer, not necessarily for the computer.
I was thinking of something like Xpath for Json, if such a thing exists.
Any ideas? I am open to any Java Json library. In fact, the easiness to extract data from Json with a powerful querying language will be central to the choice of json library.
Jackson JSON Processor has been used in a lot of frameworks. The tree model or data binding approach is probably the easiest to work with.
JsonPath emerged as a de facto standard for such tasks. A Java implementation:
https://github.com/nebhale/JsonPath
It seems well maintained and works fine.
https://github.com/jayway/JsonPath
Similar to #alexis-dufrenoy's answer -- but it looks like a more active project.
Disclaimer: I have not tried #nebhale's system, so I can't judge which is best.
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Are there any OData provider SDKs for Ruby or Java?
There are providers for Ruby and Java here:
http://www.odata.org/developers/odata-sdk
Edit: Previous link is broken, as mentioned below the listing is here http://www.odata.org/libraries/
there is a project called odata4j on googlecode that can be used to implement producers and consumers. But i haven't tried it yet
Apache Olingo http://olingo.apache.org/ provides an OData Java Library that implements the Open Data Protocol 2.0, support for 4.0 is in Beta.
There are none, unfortunately.
There are only clients. I've used ruby_odata successfully. It works well against a simple model and provides mappings for all the basic query options, although you do need to know the operators (like eq, substringof, etc).
I did run into a more complex model and needed to tweak the code a bit. It's easy to pick up on: http://odetocode.com/Blogs/scott/archive/2010/07/11/odata-and-ruby.aspx
I published Safrano a few days ago. It's a small ruby based OData provider framework. It's far from complete and a bit experimental, but it may have some use case nevertheless
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I'm really tired of using the Google Web Toolkit for accessing Google Maps in Java using Netbeans... Does anybody know of a good alternative providing a simple(r) API?
Any help would really be appreciated!
OpenStreetMap has a good API in combination with OpenLayers.
Good luck with that!
Driving instructions are included, but since OSM is user-generated, you cannot rely 100% on this information. See OSM-Wiki article "Routing"
If you want another API that has great routing and other mapping alternatives with a J2ME API you can take a look
[Shameless plug]
http://developer.decarta.com
[/shameless plug]
We also do mapping, geocoding, and other cool spatial functionality.
We have an android API, iOS API, mobile JS, and a desktop JS along with XML web services.