1.WebService, as the name implies, is a web-based service. It uses the Web (HTTP) method to receive and respond to some kind of request from the external system. This allows for remote invocation. 2. We can call the Internet to query the Weather information Web service, and then embed it in our program (c/S or/b program), when the user from our network to see the weather information, he will think we provide him with a lot of information services, but in fact we do nothing, Just a simple call to a piece of code on the server. 3. Learn WebService you can publish your service (a piece of code) to the Internet for others to call, or you can call the WebService published on someone else's machine, just as you would with your own code. WebService bottom is the socket Communication Service noun 1:xml. Extensible Markup Language-Extensible Markup Language XML, used to transfer formatted data, is the foundation of Web services. The namespace-namespace. xmlns= "http://itcast.cn" uses the default namespace. xmlns:itcast= "http://itcast.cn" uses the namespace of the specified name. noun 2:wsdl–webservice Description language–web Service Description Language. • Explain where the service is-address in XML form. • Describe what method the service provides in XML form – how to invoke it. Noun 3:soap-simple Object access Protocol (Simple Object Access Protocol) soap is used as an XML-based protocol for transmitting data online. soap = +xml data on the basis of HTTP. The soap is HTTP-based. The composition of the soap is as follows: envelope– necessary parts. appears as the root element of the XML. headers– is optional. body– is necessary. In the body section, the method that contains the server to be executed. And the data sent to the server.
