Appendix D:XML Web Service

Responses

Lesson: XML Web Service Responses

XML Web Service Responses

Default Formatted XML Web Service Responses

Reshaping XML Web Service Responses

Demonstration: Reshaping XML Web Service Responses

XML Web Service Responses

Web services respond to direct HTTP-GET calls with simple XML documents

Web services respond to application-to-application calls with SOAP envelopes

Envelope definition

Encoding rules

RPC representation

Protocol bindings

<?xml version="1.0" encoding="utf-8" ?> <ArrayOfContact> <Contact>   <name>Janet</name>   <address>Seattle, WA</address>   </Contact> <Contact>  <name>Joe</name>   <address>Attleboro, MA</address>   </Contact></ArrayOfContact>

<?xml version="1.0" encoding="utf-8" ?> <ArrayOfContact> <Contact>   <name>Janet</name>   <address>Seattle, WA</address>   </Contact> <Contact>  <name>Joe</name>   <address>Attleboro, MA</address>   </Contact></ArrayOfContact>

Default Formatted XML Web Service Responses

XML Web service code for an array

Resulting XML dataPublic Structure Contact Public name As String Public address As StringEnd Structure

<WebMethod()>Public Function _ GetContacts() As Contact()

Dim x(1) As Contact x(0).name = "Janet" x(0).address = "Seattle, WA" x(1).name = "Joe" x(1).address = "Attleboro, MA" Return xEnd Function

Public Structure Contact Public name As String Public address As StringEnd Structure

<WebMethod()>Public Function _ GetContacts() As Contact()

Dim x(1) As Contact x(0).name = "Janet" x(0).address = "Seattle, WA" x(1).name = "Joe" x(1).address = "Attleboro, MA" Return xEnd Function

public struct Contact{ public string name; public string address;}

[WebMethod()]public Contact[] GetContacts()

{ Contact[] x; x = new Contact[2]; x[0].name = "Janet"; x[0].address = "Seattle, WA"; x[1].name = "Joe"; x[1].address = "Attleboro, MA"; return x;}

public struct Contact{ public string name; public string address;}

[WebMethod()]public Contact[] GetContacts()

{ Contact[] x; x = new Contact[2]; x[0].name = "Janet"; x[0].address = "Seattle, WA"; x[1].name = "Joe"; x[1].address = "Attleboro, MA"; return x;}

Reshaping XML Web Service Responses

XML Web service revised code

Resulting XML response

<XmlType("MyContact")>Public Structure Contact <XmlAttributeAttribute("ContactName")> _

Public name As String <XmlAttributeAttribute("ContactAddress")> _

Public address As StringEnd Structure

<XmlType("MyContact")>Public Structure Contact <XmlAttributeAttribute("ContactName")> _

Public name As String <XmlAttributeAttribute("ContactAddress")> _

Public address As StringEnd Structure

<?xml version="1.0" encoding="utf-8"?><ArrayOfMyContact>  <MyContact ContactName="Janet"

ContactAddress="Seattle, WA" />   <MyContact ContactName ="Joe"

ContactAddress="Attleboro, MA" /> </ArrayOfMyContact>

<?xml version="1.0" encoding="utf-8"?><ArrayOfMyContact>  <MyContact ContactName="Janet"

ContactAddress="Seattle, WA" />   <MyContact ContactName ="Joe"

ContactAddress="Attleboro, MA" /> </ArrayOfMyContact>

[XmlType("MyContact")]public struct Contact{ [XmlAttributeAttribute("ContactName")] public string name; [XmlAttributeAttribute("ContactAddress")]

public String address;}

[XmlType("MyContact")]public struct Contact{ [XmlAttributeAttribute("ContactName")] public string name; [XmlAttributeAttribute("ContactAddress")]

public String address;}

Demonstration: Reshaping XML Web Service Responses

Add a Web method that returns a list of contacts (structure)

Reshape the returned XML