Web Services system

zhaozj2021-02-17  35

1 Summary Services SERVICE ProvIDERS deployed deploy to the Web, and features provided by a given Web Service use WSDL description. Deploying services are published on the Publish to the Web, the service agent Service Broker helps the service provider and service requestor Service Requestor discovers each other. A service requestor uses an API to request a service requested to the service proxy. When the service agent returns the result, the service request is binds Bind to an actual service. All communications discussed here can use any protocol, but for simple, select the SOAPVERSION 2.0 protocol, which allows applications to call the remote object. 2 Web Services Components There are three components: ◆ Service provider: Provide service, registration to make the service available ◆ Service Agent: Service Exchange Office, Service Provider and Service Request Malmony ◆ Service Request: Request to Service Agent Services, call these services to create applications 3 Web Services operations: ◆ Publish / Unpublish: Provider releases (registration) services to the agent or not post (remove) these services ◆ Discovery ( Find: The service request is executed to the service agent to the service agent, the service requestor describes the service you want to find, the result of the service agent distributes the result ◆ Binding (bind): Binds between service requestors and service providers, this Two partial negotiations to enable the requester to access and call the provider's service 4 UDDI - General Discovery, Description and Integration This is a specification of the information registration of Web Services, and UDDI-based Web Services registration can be discovered. UDDI's discovery method is: There is a distributed registration service, business and services in the Web, description in an universal XML format, and the structured data in XML is easy to discover, analyze, and operate. 5 WSDL - Web Services Description Language If we intend to find all the web services, we need a generic language that describes them. If I provide a service, I need to describe it to the outside world, and if I want to use a service, I have to describe what I am looking for, WSDL is this purpose.

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