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Editor to share with you the example analysis of WSD in XML mode, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

The Web Services description language (Web Services Description Language,WSDL) provides a simple way to describe Web services, mostly using SOAP. WSDL allows you to describe the services and interfaces provided by the SOAP standard. For example, you can create a WSDL file that describes the services provided on a server, and then distribute the file to W that needs those services

The Web Services description language (Web Services Description Language,WSDL) provides a simple way to describe Web services, mostly using SOAP. WSDL allows you to describe the services and interfaces provided by the SOAP standard.

For example, you can create a WSDL file that describes the services provided on a server, and then distribute the file to Web service consumers who need those services. By reading and parsing WSDL files, consumers can learn all the information they need to know to use these Web services, including the data types, parameters, and errors and other information that can be exchanged.

Using the example from the W3C again, you can see that the declaration of different remote functions and the data exchanged are processed through the XML definition of the structure, as shown in listing 3.

Listing 3. XML definition of different remote functions and exchanging data

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WSDL declares the message type, default data type and content, and the data structure of the exchange.

All the information needed to access the SOAP structure on the server can be found in this WSDL. Most languages and environments provide a mechanism for reading and parsing WSDL to determine available functions and data exchanges.

WSDL not only defines the SOAP interface for exchanging information, but with the appropriate WSDL generator, it can also be used to create the code needed to send requests, generate, and format responses.

WSDL and SOAP constitute a powerful remote procedure call system.

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