The NAnt build system I am working on has a few <exec> tasks which essentially call EXEs that are wrappers around calls to a .NET web service. I would like to streamline things as much as possible, and it occurred to me that that if I could make a web service call directly from the NAnt script, that would eliminate one step. However, I can't find a task to do this. The nearest I can find is the <get> task. At the least, I would need a task called something like <post>.
Does anybody have a suggestions?
You could use a <script language="C#">.
http://nant.sourceforge.net/release/0.92/help/tasks/script.html
<script language="C#">
<code>
<![CDATA[
public static void postToWebservice() {
....
}
]]>
</code>
</script>
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("https://WEB_URL");
myReq.Method = "POST";
myReq.ContentType = "text/xml";
myReq.Timeout = 30000;
myReq.Headers.Add("SOAPAction", ":\"#save\"");
byte[] PostData = Encoding.UTF8.GetBytes(xmlDocument);
myReq.ContentLength = PostData.Length;
using (Stream requestStream = myReq.GetRequestStream())
{
requestStream.Write(PostData, 0, PostData.Length);
}
HttpWebResponse response = (HttpWebResponse)myReq.GetResponse();
I would suggest to take a look at NAnt Contrib. There are many really useful functions including some features for web services.
Related
Well i'm a student , and i'm still learning the dart language and the flutter framework, I was trying to make an application that makes you able to login into a site with a http post request and get data by manipulating the response of the html source code with some regular expressions to get what you need from the website,
(something like data scraping)
I tried to do that but nothing worked as planned.
I did this project! years ago and it was for desktop, with vb.net, I used a library called xNet which helped me to do that.
For this case I used the http dart package.
Is this kind of work can be done with dart?
Is there any specific packages for this?
Is there any docs available ?
I know html is not a regular language, i asked if it is possible to use http requests to login into a site!?
if i can do that i can manipulate the response and get what i need with some regular expressions.
I wanna do something like
C#
using (HttpRequest req = new HttpRequest())
{
req.UserAgent = Http.ChromeUserAgent;
req.Cookies = new CookieDictionary(false);
req.Proxy = null;
req.IgnoreProtocolErrors = true;
req.AddParam("login", cin.Text);
req.AddParam("no_anti_inject_password", pass.Text);
try {
string Respo = req.Post("http://www.example.com/login.php").ToString;
// to with that 'Respo'
if (Respo.Contains("disconnect"))
{
//Logged
//example
Match NAME = Regex.Match(Respo, "(.*?)");
name.Text = "Name: " + NAME.Groups(1).Value;
}else{
//not logged
//some code...
}
catch{
//some exception
}
}
HTML is not a regular language and so a regular expression is not a good way to scrape data from html. You may be interested in package:html which implements an HTML parser.
I have a restful web service that's returning results like this:
<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">Some Text</string>
However, the people on the receiving end need this text to be terminated w/ a special character such as "\r". How can I add that text to the end of my serialized response?
I'm sending this response from inside of a WCF service in C# like this:
[WebGet(UriTemplate = "/MyMethod?x={myId}"), OperationContract]
string GetSomeText(Guid myId);
I can think of three solutions:
1. Http Module (least code but most confusing for maintenance)
Assuming you're hosting your WCF in ASP.Net, you can create an Http module to add a \r to the end of all responses in your application.
This could be the code of the Http module. I've used 'End' as a suffix here because it's easier to read in a browser than \r, but for \r you would change the "End" in context_PostRequestHandlerExecute to "\r".
public class SuffixModule : IHttpModule
{
private HttpApplication _context;
public void Init(HttpApplication context)
{
_context = context;
_context.PostRequestHandlerExecute += context_PostRequestHandlerExecute;
}
void context_PostRequestHandlerExecute(object sender, EventArgs e)
{
// write the suffix if there is a body to this request
string contentLengthHeaderValue = _context.Response.Headers["Content-length"];
string suffix = "End";
if (!String.IsNullOrEmpty(contentLengthHeaderValue))
{
// Increase the content-length header by the length of the suffix
_context.Response.Headers["Content-length"] =
(int.Parse(contentLengthHeaderValue) + suffix.Length)
.ToString();
// and write the suffix!
_context.Response.Write(suffix);
}
}
public void Dispose()
{
// haven't worked out if I need to do anything here
}
}
Then you need to set up your module up in your web.config. The below assumes you have IIS running in Integrated Pipeline mode. If you haven't, you need to register the modules in the <system.web><httpModules> section.
<system.webServer>
<modules runAllManagedModulesForAllRequests="true">
<!-- 'type' should be the fully-qualified name of the type,
followed by a comma and the name of the assembly-->
<add name="SuffixModule" type="WcfService1.SuffixModule,WcfService1"/>
</modules>
</system.webServer>
This option has the problems that it would affect all requests in your application by default and it would probably fall over if you decided to use chunked encoding.
2. Use ASP.NET MVC (changes technology but good maintainability)
Use MVC instead of WCF. You'd have far better control over your output.
3. Custom Serializer (lots of code, but less hacky than option 1)
You could write your own custom serializer. This StackOverflow question gives you pointers on how to do this. I didn't write a prototype for this because it looked as though there were many, many methods which needed to be overridden. I daresay most of them would be pretty simple delegations to the standard serializer.
I'm working on an app that requires extracting data from an xml web service, then I want to store that data (images+titles+datetime ...) to display it on my app then select an item and navigate to another page that displays more info about this item.
Is there a detailed tutorial that explains the parsing and storing process clearly (with the threads) because I'm gonna need it a lot for my app.Thanks!
I usually use this method, but didn't always get me what i want:
var doc = XDocument.Load(new StringReader(e.Result));
var items = from c in doc.Descendants("item")
select new RSSitem()
{
Title = c.Element("title").Value,
Photo = c.Element("img").Attribute("src").Value,
Description = c.Element("description").Value,
Link = c.Element("link").Value,
};
ListBoxNews.ItemsSource = items;
Sounds like you are in over your head (based on the vague nature of your question). So I'm offering my advise to get up to speed, so you can get started and ask a question that we can help give a definitive answer to.
With WP7 and .NET you shouldn't really have to do much manual parsing of Web Services. You should be able to add a Service Reference and generate a proxy which will handle this for you. This will also generate business objects for the data returned by your service.
Once you have that done, you can look into Windows Phone Navigation which should help you transition between pages in your application.
To consume web services:
String baseUri = “your service URI";
WebClient wc = new WebClient();
public MainPage()
{
InitializeComponent();
wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_downloadstringcompleted);
// event handler that will handle the ‘downloadstringsompleted’ event
wc.DownloadStringAsync(new Uri(baseUri));
// this method will download your string URI asynchronously
}
void wc_downloadstringcompleted(Object sender, DownloadStringCompletedEventArgs e)
{
// method will get fired after URI download completes
// writes your every code here
}
To parse the data:
using (XmlReader reader = XmlReader.Create(new StringReader(xmlString)))
{
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
break;
case XmlNodeType.Text:
break;
case XmlNodeType.EndElement:
break;
}
}
}
}
To store in isolated storage: http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings%28v=vs.95%29.aspx
For navigation:
NavigationService.Navigate(new Uri("/SecondPage.xaml?msg=" + navigationstring, UriKind.Relative));
Quick background.
CFHTTP doesn't support Windows NTLM/Authenticate authentication, only basic authentication. I need to make http requests that will have to authenticate against NTLM, so I've ended up rolling my own version of CFHTTP.
I found Terry Ryan's article that uses the apache httpclient version 3.1 to perform digest authentication and have built upon that using version 4.1.2 instead which includes NTLM functionality.
I have a function that will perform a get request and then other functions to handle returning a structure that looks like the cfhttp result set. The changes I made are based on the authentication tutorial example.
public any function httpRequest(url,username,password,domain) {
var httpClient = createObject("java","org.apache.http.impl.client.DefaultHttpClient");
var authScope = createObject("java","org.apache.http.auth.AuthScope");
var httpCredentials = createObject("java","org.apache.http.auth.NTCredentials");
var httpGet = createObject("java","org.apache.http.client.methods.HttpGet");
var jURL = createObject("java", "java.net.URL").init(arguments.url);
var host = jURL.getHost();
var path = jURL.getPath();
var httpHostTarget = createObject("java","org.apache.http.HttpHost").init(host,80,"http");
var localContext = createObject("java","org.apache.http.protocol.BasicHttpContext");
var httpContent = {};
var response = '';
if (len(arguments.username) and len(arguments.password) gt 0){
httpCredentials.init(arguments.Username, arguments.password, cgi.remote_host,arguments.domain);
httpClient.getCredentialsProvider().setCredentials(authScope.ANY, httpCredentials);
}
if (!Len(path)) path = "/";
httpGet.init(path);
response = httpClient.execute(httpHostTarget, httpget, localContext);
httpContent = convertHttpClientResponseToCFHTTPFormat(response);
httpClient.getConnectionManager().shutdown();
return httpContent;
}
This was working fine until I altered the function to perform the authentication.
Unfortunately I'm now getting :
The execute method was not found.
Either there are no methods with the specified method name and argument types or the execute method is overloaded with argument types that ColdFusion cannot decipher reliably. ColdFusion found 2 methods that match the provided arguments. If this is a Java object and you verified that the method exists, use the javacast function to reduce ambiguity.
As far as I can tell there is only one matching execute() function in HttpClient for the object classes passed to it, so I'm a little confused. JavaCast doesn't allow you to cast to complex objects or super types, so that didn't work.
Can anyone suggest how I can get this to work? How can I reduce the ambiguity?
Looking at the error, it's getting confused between two execute methods that have the same number of parameters. Although I don't know why it is...
Anyway, I found a way around the error. It involves pulling the method you're after out of the class and invoking it directly. If ColdFusion was happier with casting Java objects life might be easier.
//response = httpClient.execute(httpHostTarget, httpget, localContext);
classes = [httpHostTarget.getClass(), CreateObject('java', 'org.apache.http.HttpRequest').getClass(), CreateObject('java', 'org.apache.http.protocol.HttpContext').getClass()];
method = httpClient.getClass().getMethod('execute', classes);
params = [httpHostTarget, httpget, localContext];
response = method.invoke(httpClient, params);
There may be another way of doing this (casting instead) but it's all I've got ;)
As a guess, could you be loading the wrong version of the .jars ? You don't seem to be using JavaLoader like Ryan did...
I'm trying to create a code to allow an existing classic asp program to use an asp.net web service. Updating from the classic asp is not an option, as I'm working in a big company and things are the way they are.
I've been browsing through a chunk of tutorials supposedly helping in this, but I haven't managed to get them to work yet. As a beginner I might've made some real obvious mistakes but I just don't know what.
First, the web service is located on an external server. The method "Greeting" needs a String parameter by which it determines which String is sent back. Inputting "g" to it procudes this xml:
<?xml version="1.0" encoding="utf-8" ?>
<string xmlns="http://server1/Logger_WebService/">Greetings and welcome!</string>
I assume the xpath for getting the contents is either "string/*" or "*"?
Next, my web service itself looks like this:
<WebMethod()> _
Public Function Greeting(ByVal stringel As String) As String
If stringel.ToLower = "g" Then
Return "Greetings and welcome!"
Else
Return "Bye then!"
End If
End Function
The web service works fine from a regular asp.net solution.
Now here's the problem, the classic asp code looks like this (4 different ways I've tried to get this to work, SOAP toolkit is installed on the web service server, all examples taken and modified from tutorials):
'******* USING GET METHOD
Dim wsurl="http://server1/Logger_WebService/service.asmx/Greeting?g"
Dim xmlhttp
Set xmlhttp=Server.CreateObject("MSXML2.ServerXMLHTTP")
xmlhttp.open "GET",wsurl,false
xmlhttp.send
Dim rValue
'rValue=xmlhttp.responseXML.selectSingleNode("string") 'use XPATH as input argument
' or you can get response XML
rValue=xmlhttp.responseXML
Set xmlhttp=nothing
'------------------------------------------------------
'******* USING POST METHOD
Dim wsurl="http://server1/Logger_WebService/service.asmx/Greeting"
Dim xmlhttp
Set xmlhttp=Server.CreateObject("MSXML2.ServerXMLHTTP")
xmlhttp.open "POST",wsurl,false
xmlhttp.send "stringeli=g"
Dim rValue
rValue=xmlhttp.responseXML.selectSingleNode("string")
' or you can get response XML
' rValue=xmlhttp.responseXML
Set xmlhttp=nothing
'------------------------------------------------------
Response.Write consumeWebService()
Function consumeWebService()
Dim webServiceUrl, httpReq, node, myXmlDoc
webServiceUrl = "http://server1/Logger_WebService/service.asmx/Greeting?stringel=g"
Set httpReq = Server.CreateObject("MSXML2.ServerXMLHTTP")
httpReq.Open "GET", webServiceUrl, False
httpReq.Send
Set myXmlDoc =Server.CreateObject("MSXML.DOMDocument")
myXmlDoc.load(httpReq.responseBody)
Set httpReq = Nothing
Set node = myXmlDoc.documentElement.selectSingleNode("string/*")
consumeWebService = " " & node.text
End Function
'------------------------------------------------------
Response.Write(Helou())
Public Function Helou()
SET objSoapClient = Server.CreateObject("MSSOAP.SoapClient")
objSoapClient.ClientProperty("ServerHTTPRequest") = True
' needs to be updated with the url of your Web Service WSDL and is
' followed by the Web Service name
Call objSoapClient.mssoapinit("http://server1/Logger_WebService/service.asmx?WSDL", "Service")
' use the SOAP object to call the Web Method Required
Helou = objSoapClient.Greeting("g")
End Function
I seriously have no idea why nothing works, I've tried them every which way with loads of different settings etc. One possible issue is that the web service is located on a server which in ASP.Net required me to input this "[ServiceVariableName].Credentials = System.Net.CredentialCache.DefaultCredentials". I do this from within company network, and there are some security and authorization issues.
I only need to be able to send information anyhow, not receive, as the actual method I will be using is going to insert information into a database. But for now, just getting the Hello World thingie to work seems to provide enough challenge. :)
Thx for all the help. I'll try to check back on holiday hours to check and reply to the comments, I've undoubtedly left out needed information.
Please, talk as you would to an idiot, I'm new to this so chances are I can understand better that way. :)
You might consider writing a bit of .NET wrapper code to consume the web service. Then expose the .NET code as a COM object that the ASP can call directly. As you've seen, there is no tooling to help you in classic ASP, so consider using as much .NET as possible, for the tooling. Then, use COM to interoperate between the two.
A colleague finally got it working after putting a whole day into it. It was decided that it's easier by far to send information than it is to receive it. Since the eventual purpose of the web service is to write data to the DB and not get any message back, we attempted the thing by simply writing a file in the web service.
The following changes were needed:
First, in order to get it to work through the company networks, anonymous access had to be enabled in IIS.
The web service needed the following change in the web.config:
<webServices>
<protocols>
<add name="HttpGet"/>
</protocols>
</webServices>
And the web service code-behind was changed like so:
<WebMethod()> _
Public Function Greeting(ByVal stringel As String) As String
Dim kirj As StreamWriter
'kirj = File.CreateText("\\server1\MyDir\Logger_WebService\test.txt")
'if run locally, the line above would need to be used, otherwise the one below
kirj = File.CreateText("C:\Inetpub\serverroot\MyDir\Logger_WebService\test.txt")
kirj.WriteLine(stringel)
kirj.Close()
kirj.Dispose()
Return stringel
End Function
As we got the above to work, it was a simple matter of applying the same to the big web method that would parse and check the info and insert it into the database.
The classic asp code itself that needs to be added to the old page, which was the biggest problem, turned out to be relatively simple in the end.
function works()
message = "http://server1/mydir/logger_webservice/service.asmx/Greeting?" & _
"stringel=" & "it works"
Set objRequest = Server.createobject("MSXML2.XMLHTTP")
With objRequest
.open "GET", message, False
.setRequestHeader "Content-Type", "text/xml"
.send
End With
works = objRequest.responseText
end function
works()
Took about a week's worth of work to get this solved. :/ The hardest part was simply not ever knowing what was wrong at any one time.
You might be missing the SOAPAction header. Here's a working example:
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class GreetingService : WebService
{
[WebMethod]
public string Greet(string name)
{
return string.Format("Hello {0}", name);
}
}
And the calling VBS script:
Dim SoapRequest
Set SoapRequest = CreateObject("MSXML2.XMLHTTP")
Dim myXML
Set myXML = CreateObject("MSXML.DOMDocument")
myXML.Async=False
SoapRequest.Open "POST", "http://localhost:4625/GreetingService.asmx", False
SoapRequest.setRequestHeader "Content-Type","text/xml;charset=utf-8"
SoapRequest.setRequestHeader "SOAPAction", """http://tempuri.org/Greet"""
Dim DataToSend
DataToSend= _
"<soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:tem=""http://tempuri.org/"">" & _
"<soapenv:Header/>" & _
"<soapenv:Body>" & _
"<tem:Greet>" & _
"<tem:name>John</tem:name>" & _
"</tem:Greet>" & _
"</soapenv:Body>" & _
"</soapenv:Envelope>"
SoapRequest.Send DataToSend
If myXML.load(SoapRequest.responseXML) Then
Dim Node
Set Node = myXML.documentElement.selectSingleNode("//GreetResult")
msgbox Node.Text
Set Node = Nothing
End If
Set SoapRequest = Nothing
Set myXML = Nothing
Might want to double-check the version of the MSXML components. Are you using Windows Authentication? I've noticed some odd XML parsing problems with IIS 7, Classic ASP, and MSXML.
It would also help to get a useful error. Check the ** myXML.parseError.errorCode** and if its not 0 write out the error.
Reference Code:
If (myXML.parseError.errorCode <> 0) then
Response.Write "XML error: " & myXML.parseError.reason
Else
'no error, do whatever here
End If
'You get the idea...