关于ASP如何调用webservice

[Sucre_Faith]

请尽量具体
有例子最好

[Joker_myth]

只能帮顶了

[amanizty]

up~

[wenjunqianli]

1.添加web引用,输入webservice的地址,会自动生成一个类
2.调用那个类即可

[sobaby]

使用XMLHTTP调用,然后解析XML
具体 看下面

ASP调用WEBSERVICE
----INDEX----
1. soap请求方式
2. post请求方式
3. SHOWALLNODE函数(关于节点各属性和数据显示)
---------------------
一．SOAP请求示例
下面是一个 SOAP 请求示例。所显示的占位符需要由实际值替换。
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，需要构造一个与上完全相同的SOAP请求：
<%
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" ‘一定要与WEBSERVICE的命名空间相同，否则服务会拒绝
xmlhttp.Send(SoapRequest)
‘这样就利用XMLHTTP成功发送了与SOAP示例所符的SOAP请求.
‘检测一下是否成功：
Response.Write xmlhttp.Status&” ”
Response.Write xmlhttp.StatusText
Set xmlhttp = Nothing
%>
如果成功会显示200 ok,不成功会显示 500 内部服务器错误? Connection: keep-alive .
成功后就可以利用WEBSERVICE的响应，如下：
SOAP响应示例
下面是一个 SOAP 响应示例。所显示的占位符需要由实际值替换。
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>
这是与刚才SOAP请求示例所对应的SOAP响应示例,在成功发送请求后，就可以查看该响应 ：
If xmlhttp.Status = 200 Then

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

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

End if
请求正确则给出完整响应，请求不正确（如账号，密码不对）响应的内容就会信息不完整.
取出响应里的数据，如下：
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)'望大家不断完鄯 2005-1-9 writed by 844
if rootname<>"" then

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

returnstring=returnstring&"<BR>节点名称："&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,分别是："
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'是否有子节点
set childnodeobj=nodeobj.childNodes
childnodelen=nodeobj.childNodes.Length
returnstring=returnstring&"<BR><BR>有 "&childnodelen&" 个子节点;<BR>分别是: "
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
可以这样用：
If xmlhttp.Status = 200 Then

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

Else

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

End if

二．POST请求示例
HTTP POST
下面是一个 HTTP POST 请求示例。所显示的占位符需要由实际值替换。
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
构造POST请求:
<%
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"’注意
xmlhttp.setRequestHeader "HOST","192.100.100.81"
xmlhttp.setRequestHeader "Content-Length",LEN(SoapRequest)

xmlhttp.Send(SoapRequest)
‘这样就利用XMLHTTP成功发送了与HTTP POST示例所符的POST请求.
‘检测一下是否成功：
Response.Write xmlhttp.Status&” ”
Response.Write xmlhttp.StatusText
Set xmlhttp = Nothing
%>
如果成功会显示200 ok,不成功会显示 500 内部服务器错误? Connection: keep-alive .
成功后就可以利用WEBSERVICE的响应，如下：
HTTP POST
下面是一个 HTTP POST 响应示例。所显示的占位符需要由实际值替换。
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'调用SHOWALLNODE
Set xmlDOC = nothing

Else

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

End if

　　

[jinjazz]

asp就用xmlhttp了，如果是aspx可以用web引用

[quincystar]

大致分3步:

1. 首先创建一个WebService,实现函数Test(para1, para2)
2. 创建名为2.asp的表单,编写服务器代码实现Test函数的功能,调用WebService并将返回值赋给函数名

在ASP中调用WebServices,服务器代码要拼接成SOAP的格式:

<%

Dim strWebServicePath
strWebServicePath = Application("Webservice")

Function Test(para1, para2)
Dim xmldocument,xmlhttp,strxml,boolResult,root
Set xmldocument = CreateObject("MSXML2.DOMDocument")
set xmlhttp = CreateObject("Msxml2.XMLHTTP")
xmldocument.async = "false"
strXml = "<?xml version='1.0' encoding='utf-8'?>"
strXml = strXml + "<soap:Envelope "
strXml = strXml + "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
strXml = strXml + "xmlns:xsd='http://www.w3.org/2001/XMLSchema' "
strXml = strXml + "xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>"
strXml = strXml + "<soap:Body>"
strXml = strXml + "<Test xmlns='http://tempuri.org/'>"
strXml = strXml + "<p_para1>"
strXml = strXml + para1
strXml = strXml + "</p_para1><p_para2>"
strXml = strXml + para2
strXml = strXml + "</p_para2></Test></soap:Body></soap:Envelope>"

xmldocument.async = "false"
boolResult = xmldocument.LoadXML(strXml)
if boolResult = "false" then
Test= -1
exit function
end if
xmlhttp.open "post", strWebServicePath, False
xmlhttp.setRequestHeader "SOAPAction", "http://tempuri.org/Test"
xmlhttp.setRequestHeader "Content-Type", "text/xml"
xmlhttp.send xmldocument
Set xmldocument = xmlhttp.responseXML
Set root = xmldocument.selectSingleNode("soap:Envelope/soap:Body/TestResponse/TestResult")
if root is nothing then
Test = -1
exit function
end if
Test = root.text
End Function

%>

3. 在其它表单页面调用Test函数,先引用第2步的表单:<!--#include file="./2.asp"-->, 然后直接call 函数Test(para1, para2)就可以了.

[Sucre_Faith]

不是说要用到COM组件或者其他组件的吗？

[lianfeng5837]

学习中。mark。