If I create a web service using JAX-RS (on netbeans), it is essentially an API to the web service?
The web service would be REST or SOAP based.
I realize that the API provides the interface to the web service's functions, but does JAX-RS expose the interface?
Actually, include the library for JAX-RS depends of the Application Server. If you use a application server in netbeans which is Java EE6 Certified, you don't need any additional libraries.
However, if you use netbeans and also Tomcat o a Java EE 5 server, netbeans automatically add the JAX-RS libraries, in this case, the reference implementation.
The user can also choose to do it by hand.
Read more:
Getting Started with RESTful Web Services
Developing RESTful Web Services with JAX-RS, Netbeans, Glassfish
Related
I am trying add connected services to generate the proxy class and got this error.
Creating WCF Service proxy class
You can try to use dotnet-svcutil tool. The Windows Communication Foundation (WCF) dotnet-svcutil tool is a .NET tool that retrieves metadata from a web service on a network location or from a WSDL file, and generates a WCF class containing client proxy methods that access the web service operations.
Similar to the Service Model Metadata - svcutil tool for .NET Framework projects, the dotnet-svcutil is a command-line tool for generating a web service reference compatible with .NET Core and .NET Standard projects.
For more information about "WCF dotnet-svcutil tool for .NET Core", you can refer to this link.
G'Day mates,
I want to use Dropwizard to access my business logic which is encapsulated in EJB layer hosted on Glassfish.
From Dropwizard website, Dropwizard uses Jetty as a built-in application server. Which as far as I know is not EJB compatible.
How can I build a webservice layer that can consume my business layer and at the same time I can utilize the run any where .jar services?
Regards,
Consuming an EJB web service does not require to use EJB. Its just SOAP over HTTP, so you can do it with a simple HTTP client application.
Normally you would generate proxy code from the wsdl to use with JAVA, check out apache cxf or the jaxws-maven-plugin.
I'm planning to develop a pos application for restaurant. Client will be using pc and mobile. Application will be used in local area connection. I'm still considering whether to go with wcf or web api. What are the advantages of using wcf/web api for the type of application i'm building?
Use WCF to create reliable, secure web services that accessible over a variety of transports.
Use ASP.NET Web API to create HTTP-based services that are accessible from a wide variety of clients.
Use ASP.NET Web API if you are creating and designing new REST-style services. Although WCF provides some support for writing REST-style services, the support for REST in ASP.NET Web API is more complete and all future REST feature improvements will be made in ASP.NET Web API.
If you have an existing WCF service and you want to expose additional REST endpoints, use WCF and the WebHttpBinding.
from the official Microsoft Documentation.
Essentially, my take on this is that WCF is much more difficult to work with, and not completely compatible out of the box with many mobile clients, so only use it if you know that it's something you need.
I am on a WCF project that is going to be interfacing with WebSphere.
They have told me that they will create a WSDL for me to call from my WCF solution.
I know ZERO about WebSphere. So I am asking if the term WSDL is universal. Or is it kind of like "SQL" (meaning the basics are the same, but an Oracle/WebSphere query/call may not run on SQL Server/WCF).
Has anyone tried this? Are there hidden "gotchas"?
From a purely semantic perspective both WCF WSDL's and JAX-RPC (Websphere) WSDL's are compliant with both SOAP 1.1 and SOAP 1.2. However they both tend to have some slight variations in out of the box endpoint generation, wsdl location to endpoint mapping external references location, soap:action generation and WS-* compliance that could present you issues.
IBM mentions the following as a common issue when integrating WCF generated WSDL's with their products which are based on JAX-RPC
Note: Web services allow applications to interoperate by using standard descriptions of services and standard formats for the messages they exchange. For example, the Web service import and export bindings can interoperate with services that are implemented using Web Services Enhancements (WSE) Version 3.5 and Windows Communication Foundation (WCF) Version 3.5 for Microsoft .NET. When interoperating with such services, you must ensure that:
The Web Services Description Language (WSDL) file that is used to access a Web service export includes a non-empty SOAP action value for each operation in the interface.
The Web service client sets either the SOAPAction header or the wsa:Action header when sending messages to a Web service export.
My friend asked to explain me what's the difference between Spring, axis2 and Jersey. Here I listed down a few differences that I'm aware of. Please comment/respond if you know more differences
Spring webservices:
A java web application with a servlet configured in
web.xml(org.springframework.ws.transport.http.MessageDispatcherServlet).
You can use spring annotated POJOs for creating web services
Supports both RESTful and SOAP based web services.
Since it’s a web application you can use http authentication mechanisms
for enabling security
Axis2:
The webservice application is a .aar file that will be deployed in
axis2.war
Use AXIOM for using non-primitive type arguments to web service calls
You can use JSR181 annotations to create webservices
You can use spring-dependency injection using axis2 extensions.
Supports both RESTful and SOAP based web services.
I guess you have to use ws-security implementation for
providing security
to your web services>
They claim hot deployment of webservices works but I haven’t seen
it working.
Jersey:
A regular web application with a servlet configured in web.xml.
Write custom message readers/writers for using
non-primitive type arguments to web
service calls
Since it’s a web application you can use http authentication mechanisms
for enabling security
Supports only RESTful implementation of web services
I have seen hot deployment working may be because it’s a web application
and the container can do hot
deployment
I'm not familiar with Jersey and Axis, but I can tell you something about Spring-WS.
You cannot use Spring-WS for restful webservices. Spring-WS is intended to be used for contract first webservices. You can however use the features of Spring 3.x and Spring-MVC for REST services.
As for authorization, you can easily wire in any sort of security (with Spring-Security for instance).
I'm a big fan of the 'automatic' (de) marshalling features of Spring-WS. Just annotate your methods with the correct types and it'll know what to do.