WSDL - 示例
下面给出一个 WSDL 文件,用于演示一个简单的 WSDL 程序。
我们假设服务提供了一个公开可用的函数,名为 sayHello。此函数需要一个字符串参数并返回一个字符串问候语。例如,如果您传递参数 world,则服务函数 sayHello 将返回问候语"Hello, world!"。
示例
HelloService.wsdl 文件的内容 −
<definitions name = "HelloService"
targetNamespace = "http://www.examples.com/wsdl/HelloService.wsdl"
xmlns = "http://schemas.xmlsoap.org/wsdl/"
xmlns:soap = "http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:tns = "http://www.examples.com/wsdl/HelloService.wsdl"
xmlns:xsd = "http://www.w3.org/2001/XMLSchema">
<message name = "SayHelloRequest">
<part name = "firstName" type = "xsd:string"/>
</message>
<message name = "SayHelloResponse">
<part name = "greeting" type = "xsd:string"/>
</message>
<portType name = "Hello_PortType">
<operation name = "sayHello">
<input message = "tns:SayHelloRequest"/>
<output message = "tns:SayHelloResponse"/>
</operation>
</portType>
<binding name = "Hello_Binding" type = "tns:Hello_PortType">
<soap:binding style = "rpc"
transport = "http://schemas.xmlsoap.org/soap/http"/>
<operation name = "sayHello">
<soap:operation soapAction = "sayHello"/>
<input>
<soap:body
encodingStyle = "http://schemas.xmlsoap.org/soap/encoding/"
namespace = "urn:examples:helloservice"
use = "encoded"/>
</input>
<output>
<soap:body
encodingStyle = "http://schemas.xmlsoap.org/soap/encoding/"
namespace = "urn:examples:helloservice"
use = "encoded"/>
</output>
</operation>
</binding>
<service name = "Hello_Service">
<documentation>WSDL File for HelloService</documentation>
<port binding = "tns:Hello_Binding" name = "Hello_Port">
<soap:address
location = "http://www.examples.com/SayHello/" />
</port>
</service>
</definitions>
示例分析
Definitions − HelloService
Type − 使用内置数据类型,它们在 XMLSchema 中定义。
Message −
sayHelloRequest − firstName 参数
sayHelloresponse − Greeting 返回值
Port Type − sayHello 操作由请求和响应服务组成。
Binding − 使用 SOAP HTTP 传输协议的方向。
Service −服务可在 http://www.examples.com/SayHello/ 获得
Port − 将绑定与 URI http://www.examples.com/SayHello/ 关联,可从该 URI 访问正在运行的服务。

