ASP编程：ASP若何挪用webservice

由于ASP提供的是一对多的服务，所以用户的一些特殊需求很难得到满足。   1. soap恳求体例
2. post恳求体例
3. SHOWALLNODE函数(关于节点各属性和数据显示)

一．SOAP恳求示例

　　上面是一个 SOAP 恳求示例。所显示的占位符需求由实践值交换。

POST /WebService1/UserSignOn.asmx HTTP/1.1
Host: 192.100.100.81
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://tempuri.org/LoginByAccount"

＜?xml version="1.0" encoding="utf-8"?＞
＜soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"＞
＜soap:Body＞
＜LoginByAccount xmlns="http://tempuri.org/"＞
＜username＞string＜/username＞
＜password＞string＜/password＞
＜/LoginByAccount＞
＜/soap:Body＞
＜/soap:Envelope＞

　　为了与WEBSERVICE交互，需求机关一个与上完整不异的SOAP恳求：

＜%
url = "http://192.100.100.81/WebService1/UserSignOn.asmx"

SoapRequest="＜?xml version="&CHR(34)&"1.0"&CHR(34)&" encoding="&CHR(34)&"utf-8"&CHR(34)&"?＞"& _
"＜soap:Envelope xmlns:xsi="&CHR(34)&"http://www.w3.org/2001/XMLSchema-instance"&CHR(34)&" "& _
"xmlns:xsd="&CHR(34)&"http://www.w3.org/2001/XMLSchema"&CHR(34)&" "& _
"xmlns:soap="&CHR(34)&"http://schemas.xmlsoap.org/soap/envelope/"&CHR(34)&"＞"& _
"＜soap:Body＞"& _

"＜LoginByAccount xmlns="&CHR(34)&"http://tempuri.org/"&CHR(34)&"＞"& _
"＜username＞"&username&"＜/username＞"& _
"＜password＞"&password&"＜/password＞"& _
"＜/LoginByAccount＞"& _

"＜/soap:Body＞"& _
"＜/soap:Envelope＞"

Set xmlhttp = server.CreateObject("Msxml2.XMLHTTP")
xmlhttp.Open "POST",url,false
xmlhttp.setRequestHeader "Content-Type", "text/xml; charset=utf-8"
xmlhttp.setRequestHeader "HOST","192.100.100.81"
xmlhttp.setRequestHeader "Content-Length",LEN(SoapRequest)
xmlhttp.setRequestHeader "SOAPAction", "http://tempuri.org/LoginByAccount" ‘必定要与WEBSERVICE的定名空间不异，不然办事会回绝
xmlhttp.Send(SoapRequest)
‘如许就使用XMLHTTP胜利发送了与SOAP示例所符的SOAP恳求.
‘检测一下是不是胜利：
Response.Write xmlhttp.Status&”  ”
Response.Write xmlhttp.StatusText
Set xmlhttp = Nothing
%＞
假如胜利会显示200 ok,不胜利会显示 500 外部办事器毛病? Connection: keep-alive .
胜利后就能够使用WEBSERVICE的呼应，以下：
SOAP呼应示例
上面是一个 SOAP 呼应示例。所显示的占位符需求由实践值交换。
HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

＜?xml version="1.0" encoding="utf-8"?＞
＜soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"＞
＜soap:Body＞
＜LoginByAccountResponse xmlns="http://tempuri.org/"＞
＜LoginByAccountResult＞string＜/LoginByAccountResult＞
＜/LoginByAccountResponse＞
＜/soap:Body＞
＜/soap:Envelope＞
这是与方才SOAP恳求示例所对应的SOAP呼应示例,在胜利发送恳求后，就能够检查该呼应 ：
If xmlhttp.Status = 200 Then

Set xmlDOC =server.CreateObject("MSXML.DOMDocument")
xmlDOC.load(xmlhttp.responseXML)
xmlStr = xmlDOC.xml
Set xmlDOC=nothing
xmlStr = WordStr(xmlStr,"＜","< ")
xmlStr = WordStr(xmlStr,"＞","> ")
Response.write xmlStr
Else

Response.Write xmlhttp.Status&"  "
Response.Write xmlhttp.StatusText

End if
恳求准确则给出完全呼应，恳求不准确（如账号，暗码不合错误）呼应的内容就会信息不完全.
掏出呼应里的数据，以下：
If xmlhttp.Status = 200 Then

Set xmlDOC = server.CreateObject("MSXML.DOMDocument")
xmlDOC.load(xmlhttp.responseXML)
Response.Write xmlDOC.documentElement.selectNodes("//LoginByAccountResult")(0).text ‘显示节点为LoginByAccountResult的数据(有编码则要解码)
Set xmlDOC = nothing

Else

Response.Write xmlhttp.Status&"  "
Response.Write xmlhttp.StatusText


End if

显示某节点各个属性和数据的FUNCTION：

Function showallnode(rootname,myxmlDOC)'望人人不休完鄯 2005-1-9 writed by 844
if rootname＜＞"" then

set nodeobj=myxmlDOC.documentElement.selectSingleNode("//"&rootname&"")'以后结点对像
nodeAttributelen=myxmlDOC.documentElement.selectSingleNode("//"&rootname&"").attributes.length'以后结点属性数

returnstring=returnstring&"＜BR＞节点称号："&rootname

if nodeobj.text＜＞"" then
returnstring=returnstring&"＜BR＞节点的文本：("&nodeobj.text&")"
end if

returnstring=returnstring&"＜BR＞{＜BR＞"

if nodeAttributelen＜＞0 then
returnstring=returnstring&"＜BR＞属性数有  "&nodeAttributelen&" 个,分离是："
end if

for i=0 to nodeAttributelen-1
returnstring=returnstring&"＜li＞"&nodeobj.attributes(i).Name&":  "&nodeobj.getAttribute(nodeobj.attributes(i).Name)&" ＜/li＞"
next

if nodeobj.childNodes.Length＜＞0 then
if nodeobj.hasChildNodes() and lcase(nodeobj.childNodes.item(0).nodeName)＜＞"#text" then'是不是有子节点
set childnodeobj=nodeobj.childNodes
childnodelen=nodeobj.childNodes.Length
returnstring=returnstring&"＜BR＞＜BR＞有 "&childnodelen&" 个子节点; ＜BR＞分离是: "
for i=0 to childnodelen-1
returnstring=returnstring&"＜li＞"&childnodeobj.item(i).nodeName&"＜/li＞"
next
end if
end if

returnstring=returnstring&"＜BR＞}＜BR＞"
response.write returnstring
set nodeobj=nothing
end if
End Function

可以如许用：
If xmlhttp.Status = 200 Then

Set xmlDOC = server.CreateObject("MSXML.DOMDocument")
xmlDOC.load(xmlhttp.responseXML)
showallnode "LoginByAccountResponse",xmlDOC’挪用SHOWALLNODE
Set xmlDOC = nothing

Else

Response.Write xmlhttp.Status&"  "
Response.Write xmlhttp.StatusText

End if

二．POST恳求示例
HTTP POST
上面是一个 HTTP POST 恳求示例。所显示的占位符需求由实践值交换。
POST /WebService1/UserSignOn.asmx/LoginByAccount HTTP/1.1
Host: 192.100.100.81
Content-Type: application/x-www-form-urlencoded
Content-Length: length

username=string&password=string
机关POST恳求:
＜%
url = "http://192.100.100.81/WebService1/UserSignOn.asmx/LoginByAccount"

SoapRequest="username="&username&"&password="&password

Set xmlhttp = server.CreateObject("Msxml2.XMLHTTP")
xmlhttp.Open "POST",url,false
xmlhttp.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"’注重
xmlhttp.setRequestHeader "HOST","192.100.100.81"
xmlhttp.setRequestHeader "Content-Length",LEN(SoapRequest)

xmlhttp.Send(SoapRequest)
‘如许就使用XMLHTTP胜利发送了与HTTP POST示例所符的POST恳求.
‘检测一下是不是胜利：
Response.Write xmlhttp.Status&”  ”
Response.Write xmlhttp.StatusText
Set xmlhttp = Nothing
%＞
假如胜利会显示200 ok,不胜利会显示 500 外部办事器毛病? Connection: keep-alive .
胜利后就能够使用WEBSERVICE的呼应，以下：
HTTP POST
上面是一个 HTTP POST 呼应示例。所显示的占位符需求由实践值交换。
HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

＜?xml version="1.0" encoding="utf-8"?＞
＜string xmlns="http://tempuri.org/"＞string＜/string＞


显示：
If xmlhttp.Status = 200 Then

Set xmlDOC = server.CreateObject("MSXML.DOMDocument")
xmlDOC.load(xmlhttp.responseXML)
showallnode "string",xmlDOC'挪用SHOWALLNODE
Set xmlDOC = nothing

Else

Response.Write xmlhttp.Status&"  "
Response.Write xmlhttp.StatusText

End if
无法实现跨操作系统的应用。当然这也是微软的理由之一，只有这样才能发挥ASP最佳的能力。可是我却认为正是Windows限制了ASP，ASP的概念本就是为一个能让系统运行于一个大的多样化环境而设计的；