I am developing SOAP web service using annotation i.e. #WebService, #WebMethod and XML annotation for request and response entities. The web server generates the WSDL contract which the client uses. I am not able to set any xml restriction on the response elements, say for example i want top set a String element to max length to 50 characters. As I am not writing the WSDL/XSD manually is there a way to define this through annotation so the the server includes in the generated WSDL.
JAX-WS web service uses JAXB for data binding. Unfortunately, the default JAXB reference implementation does not support JAXB facet. So with the default implementation, you cannot use annotation to specify string element maxlength restriction. However, you can check out JAXB-Facets project, which does exactly what you want.
Related
I need to use camel cxfrs for rest and i have soap wsdl and all code .
I need to use cxfrs and then add all business logic(as it was implemented in soap).
The service impl is probably (hopefully) just Java logic that the REST service can re-use. The only things that change are the URL's to call the operations and the format of the data in the payload.
The SOAP services generally already have an interface or service impl w/ the SOAP annotations. All you need to do is add the JAX-RS annotations on top of them and boom! You'll have a REST service.
If you want to convert from XML to JSON based payloads.. CXF has some auto-JSON providers. However, at that point you'd probably want to break from the SOAP dependencies and might as well re-implement the models as Jackson-based objects.
I am deploying a Web Service class using #WebService on WebSphere 8.5. I always get the warning
This implementation does not contain a WSDL definition and is not a SOAP 1.1 based binding. Per the JAXWS specification, a WSDL definition cannot be generated for this implementation.
I need to have the WSDL generated. Which is the correct way to specify the correspondent wsdl to my classes in order to get it generated when the webservice is called
The error message indicates that you're using the v1.2 of SOAP.
Per the JAX-WS spec, if you've specified the v1.2 of SOAP in your sun-jaxws.xml file using the following entry, your wsdl will not be automatically generated
binding="http://www.w3.org/2003/05/soap/bindings/HTTP/"
The line above indicates to the JAX-WS runtime that SOAP1.2 is to be used but it also stipulates that the wsdl should not be generated.
If you want to ensure that the wsdl is generated but still want to use SOAP 1.2, you should use the following binding attribute instead
binding="http://java.sun.com/xml/ns/jaxws/2003/05/soap/bindings/HTTP/"
Reference:
JAX-WS 2.1.1/SOAP 1.2 Reference
I have done a few use cases on WSO2-ESB including protocol mediation with transformation and service-chaining.
In all of them I had to manually write the wsdl for the proxy service. Having experienced other vendor products including Oracle and Tibco where wsdl generation is done by the tool.
Would it be right to assume in WSO2 ESB one needs to manually write the wsdl file to expose a proxy service on any protocol, do not see any documents calling that out.
Considering the usage of wsdl in practical use cases.
I have seen posts stating "you can give the WSDL available at your Axis2 service" but most of real time use cases would not be pass through and have custom request and response.
Thanks,
Wajid
I'm also confused with manual wsdl creation. As far as I can see there are gaps in wsdl proxy description. When I do wsdl proxy with WSO2 I have to indicate wsdl to expose
its either as:
"none" and I have only mediate function exposed
"same contract" and this breaks the whole idea of proxy because after that clients read original wsdl and go straight to original server access point.
or and I have several options to make my own wsdl.
With rich SOAP API (hundreds of methods) none of above work well, considering that manual support of exposed WSDL is rather cumbersome.
I wonder if there is more adequate way for proxying WSDL?
You can use java2wsdl generator tool to achieve the WSDL generation.
For the proxies, if you try to restrict access for some operations in your backend service, you can attach customized wsdl to the proxy.
The customization has to be done by yourself and it is simple..
If you want to generate a wsdl fro your service, jsut deploy the service in wso2as, and check the service dashboard, wsdl option to view the wsdls.
I'm new to web services and I'm facing a design issue where we want to create a web service (preferably SOAP based) which will receive 2 parameters:
a string variable (Client Name);
XML data.
There are currently 2 different consumers of this web service but their number will increase. All consumers have separate XSD data that they will be sending, for example:
Consumer1:
<ConData>
<Customer>
<FirstName>FirName</FirstName>
<LastName>LasName</LastName>
</Customer>
<Acocunt>
<Number>112971</Number>
</Account>
<Order>
<OrderNum>0092123</OrderNum>
</Order>
<ConData>
Consumer2:
<ConData>
<SysData>
<CustomerFirstName>Name</CustomerFirstName>
<CustomerLastName>Name</CustomerLastName>
<AccountNumber>Au1o2n</AccountNumber>
<OrderNum>koo912</OrderNum>
</SysData>
<ConData>
This web service is supposed to take the XML data from these clients and store it into the database based on the consumer name. There is no processing required on our end for validating the XML as such, we just take it and store it in the database.
As a good design though, I'd like to define my web service with explicit parameters. The problem is that since their XML data format is different I'm not able to use a single XSD schema as a parameter in my WSDL. I can think of 2 options to address this:
1. Let them pass XML data as String in my web service instead of XSD mapping parameter. Though this is a valid approach, it seems like a bad design based on what I've read so far on the forums as it voids validation and needs lots of manual marshaling and unmarshaling and other problems. Plus my WSDL will not be able to define to my clients what format is expected etc.
2. Create 2 separate web services which will handle different individual consumers with their own XSD's. This again seems less viable since in future if we add more consumers we will have to add new web services with duplicate code for the same operation etc.
I was looking to see if there is a way to define multiple XSD's in a single web service WSDL or maybe a better way of solving this problem.
On a side note, I'd prefer to have a SOAP based web service but if this problem gets resolved using a RESTful web service in a better way then I can consider that as well.
You don't need to have a different web service or skeleton for each client, you just need a different WSDL.
Forget about sending this XML parameter as string, it has disadvantages that I won't repeat here since you already read about it too. So you need to send it as XML.
To keep it into one web service, you create the web service so that it accept any XML as input (type <xsd:any> for the parameter). Type <xsd:any> will mean any kind of XML, but at least it would be XML that you can validate for structure, for starters.
This simplifies versioning of your web service as you don't need to change the code when adding another XML type of input but unfortunately you lose strong typing for your web service and the WSDL generated for the web service will not state anything about the structure of the XML it's expecting (any XML is too vague). Your web service skeleton will be created with a type like Object, XmlElement, XmlDocument or whatever in your code. And the same will happen with all your client stubs.
But for your clients this can be fixed from the WSDL by providing each client with a different WSDL.
For that you create a WSDL of your web service with common content for all clients, except the <types> section, and then merge this common WSDL for each client with their own XML Schema. You will then expose each WSDL on different URLs for each client.
Now the clients will be able to generate strong typed stubs based on their own particular WSDL.
When a client makes a call to your web service, you identify the client XML Schema and use it to validate the XML parameter and see if it's the expected content.
And if the above seem to much, then you can always choose a loosely typed RESTful web service. Whatever solution you choose though, just make sure that you validate the incoming XML using the schema of the client that's sending it.
I am reading so many things to understand various things in WCF.
Very soon, actually, i want to move/convert existing WSE3 web services to WCF. In existing WSE web services, I have some (data) classes that model entities in our environment.
While transforming those classes, should I use Data Contract/Data Member attribute or the MessageContract attribute?
1. How to decide between Message Contract and Data Contract in WCF?
2. Does type of binding (like basicHttpBinding) has any role in this decision?
3. Does proxies created at client side (when we add web reference) change significantly depending on the Data or Message Contract?
(PS: I am trying to find a way so that existing WSE clients should be able to consume the WCF service without much alterations/modifications. Is it possible to use the current proxies generated from ASMX web services, to connect to the new WCF service just by setting URL of the proxy to WCF service?)
Here is a quick go at answering your questions:
1) Unless there is a specific reason like tweaking the structure of the soap XML, use DataContract instead of MessageContract.
2 & PS) Since you are currently using soap over HTTP, you'll most likely need the new services to be configured for basicHttpBinding. This will provide the interoperability that you need for the ASMX clients.
3) It shouldn't if the soap structure created by the WCF service matches your current soap.
I vaguely remember that WSE 3.0 supported some of the WS-* standards. If your current code depends on these then you may be able to also expose a wsHttpBinding for these operations but I don't think a default ASMX client works with a wsHttpBinding configured service.
It depends on control you need over resulting SOAP message. DataContract defines part of message body wrapped by element defined by operation. MessageContract defines a structure of whole message - you can use multiple body members, you don't have to use default wrapper element and you can also place some data into SOAP headers.
In your scenario the most important part is to define WCF to use same SOAP messages as your former WSE3 service. Here the important is how do you currently serialize data? If you use Xml serialization (and attributes) you can use it directly in WCF by switchinig from data contract serialization to xml serialization.
Btw. why did you use WSE3 instead of plain ASMX? Did you use message security? In such case you will need another binding. BasicHttpBinding is not able to do message security.
General answer is yes, you can create service wich your current client proxies will be able to consume. But in reality the effort depends on your current service and current code.