SMTP Transport Binding for SOAP
SOAP 除了可以 bind 到 HTTP 上外, 也可以 bind 到 SMTP 上. 其实个人感觉, SOAP bind 到 SMTP 上的场景很少会使用到, 通常限于 one-way operation (比如通知等不需要响应). 如果需要实现 request/response, 那么是需要多做一些工作的(下文会有叙述).
soap:binding element 的 transport 属性需指定一个 http://xxx(例如:http://schemas.xmlsoap.org/soap/smtp) URL 来表明所要 binding 的 protocol. 似乎这个 URL 是任意形式, 只要能让调用方知道要使用什么协议即可. 在 soap:address 要给定 mailto:xxxx@xxx.xxx 这样形式的 URI.
<service name="StockQuoteServiceBinding_service">
<port name="StockQuoteServiceBinding_port"
binding="binding:StockQuoteServiceBinding">
<soap:address location="mailto:getQuote@test.com"/>
</port>
</service>
注意: 在 soap:address element 中, 可能会有一些扩展元素, 例如smtp server, smtp username, smtp password, etc.
在需要 request / response 语义情况下, 需使用标准的 Message-Id 和 In-Reply-To SMTP header 来实现这一目标. 请求包含一个 Message-Id header, 相应的响应则在 In-Reply-To header 中使用请求的 Message-Id header 值, 同时也创建一个新的 Message-Id header. 这样, 在请求与响应之间便建立了关联.
请求:
To: <soap@example.org> From: <soap@client.com> Reply-To: <soap@client.com> Date: Tue, 15 Nov 2001 23:27:00 -0700 Message-Id: <1F75D4D515C3EC3F34FEAB51237675B5@client.com> MIME-Version: 1.0 Content-Type: text/xml; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE <?xml version=3D"1.0" encoding=3D"UTF-8"?> <SOAP-ENV:Envelope SOAP-ENV:encodingStyle=3D"http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENC=3D"http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV=3D"http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd=3D"http://www.w3.org/2001/XMLSchema" xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"> <SOAP-ENV:Body> <m:echoString xmlns:m=3D"http://soapinterop.org/"> <inputString>get your SOAP over SMTP here !</inputString> </m:echoString> </SOAP-ENV:Body> </SOAP-ENV:Envelope>
响应:
To: <soap@client.com> From: <soap@example.org> Date: Tue, 13 Nov 2001 23:27:00 -0700 In-Reply-To: <1F75D4D515C3EC3F34FEAB51237675B5@client.com> Message-Id: <FF75D4D515C3EC3F34FEAB51237675B5@soap.example.org> MIME-Version: 1.0 Content-Type: TEXT/XML; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE <?xml version=3D"1.0" encoding=3D"UTF-8"?> <SOAP-ENV:Envelope SOAP-ENV:encodingStyle=3D"http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENC=3D"http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV=3D"http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd=3D"http://www.w3.org/2001/XMLSchema" xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"> <SOAP-ENV:Body> <m:echoStringResponse xmlns:m=3D"http://soapinterop.org/"> <return>get your SOAP over SMTP here !</return> </m:echoStringResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope>
Resources:
By javafuns on July 19, 2009 at 23:37 ·
Views: 366 · Permalink · RSS
Categorized in: SOA · Tagged with: SOAP, UDDI, Webservice, WSDL, XML
Categorized in: SOA · Tagged with: SOAP, UDDI, Webservice, WSDL, XML
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