consume java servlet through C# asp.net where input and output is xml
Question
I have a java servlet service which need to be invoked from dot net application. I have found some code but in response stream i am receiving null.Where as when invoked through html it is working fine.
Below is html code which is working when executed and xml structured data is pasted in textbox and invoked.
<html><head><meta http-equiv="Content-Type" content="text/html; charset=windows-1252"></head><body>
<form action="http://172.18.1.57:8080/webdesktop/APIExecutor" method="POST">
<textarea rows="10" cols="150" name="inXml"></textarea>
<br><br>
<input type="submit" value="register">
</form>
</body></html>
below is my input in xml
<?xml version="1.0"?>
<WMConnect_Input>
<Option>WMConnect</Option>
<EngineName>abcuat</EngineName>
<ApplicationInfo>172.18.1.57</ApplicationInfo>
<Participant>
<Name>username</Name>
<Password>test1234</Password>
<Scope></Scope>
<UserExist>Y</UserExist>
<Locale>en-US</Locale>
<ParticipantType>U</ParticipantType>
</Participant>
</WMConnect_Input>
and output is as below in xml.
this works for html but from dot net application it throws null value.
below code i have tried .
click here to check code i have tried .
Thank you in advance.
2 answers
solution1
0 2018-03-20 07:56:00
HttpWebRequest would help you. Put proper Catch Block and get the exception to filter it further.
string myurl = uri + uriTemplate;
string soapAction = string.Empty;
String Method = methodType;//Define your method
try
{
XmlDocument soapEnvelopeXml = new XmlDocument();
var strSOAPXML = (Y)obj;//obj would be your request object
soapEnvelopeXml.LoadXml(Convert.ToString(strSOAPXML));
HttpWebRequest webRequest=(HttpWebRequest)WebRequest.Create(uri);
webRequest.Headers.Add("SOAPAction", soapAction + uriTemplate);
webRequest.ContentType = "text/xml;charset=\"utf-8\"";
webRequest.Accept = "text/xml";
webRequest.Method = Method.ToUpper();
webRequest.KeepAlive = false;
using (Stream stream = webRequest.GetRequestStream())
{ soapEnvelopeXml.Save(stream); }
// begin async call to web request.
IAsyncResult asyncResult = webRequest.BeginGetResponse(null, null);
// suspend this thread until call is complete
asyncResult.AsyncWaitHandle.WaitOne();
// get the response from the completed web request.
string soapResult;
using (WebResponse webResponse = webRequest.EndGetResponse(asyncResult))
using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
{
soapResult = rd.ReadToEnd();
}
}
catch (Exception ex)
{
throw ex;
}
return _result;
solution2
0 2018-03-30 07:13:07
THe parameter name was not specified and content-type/mime was different.
content type as - application/x-www-form-urlencoded
Below is code which worked for me.
> string URI = "http://172.18.1.57:8080/webdesktop/APIExecutor";
> string myParameters = "inXml=<?xml version='1.0'?><WMConnect_Input><Option>WMConnect</Option><EngineName>uat</EngineName><ApplicationInfo>172.18.1.57</ApplicationInfo><Participant><Name>test1234</Name><Password>test1234</Password> <Scope></Scope> <UserExist>Y</UserExist> <Locale>en-US</Locale> <ParticipantType>U</ParticipantType></Participant></WMConnect_Input>";
>
>
> HttpWebRequest req = (HttpWebRequest)System.Net.WebRequest.Create(URI);
> req.Method = "POST";
> req.ContentType = "application/x-www-form-urlencoded";
> byte[] bytes = System.Text.Encoding.ASCII.GetBytes(myParameters);
> req.ContentLength = bytes.Length;
> System.IO.Stream os = req.GetRequestStream();
> os.Write(bytes, 0, bytes.Length); //Push it out there
> os.Close();
> using (HttpWebResponse response = req.GetResponse() as System.Net.HttpWebResponse)
> {
> using (Stream st = response.GetResponseStream())
> {
> StreamReader str = new StreamReader(st, System.Text.Encoding.UTF8);
> var res = str.ReadToEnd();
> }
> }
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