SOAP
Pros:
·
Langauge,
platform, and transport agnostic
·
Designed
to handle distributed computing environments
·
Is the
prevailing standard for web services, and hence has better support from other
standards (WSDL, WS-*) and tooling from vendors
·
Built-in
error handling (faults)
·
Extensibility
Cons:
·
Conceptually
more difficult, more "heavy-weight" than REST
·
More
verbose
·
Harder
to develop, requires tools
REST
Pros:
·
Language
and platform agnostic
·
Much
simpler to develop than SOAP
·
Small
learning curve, less reliance on tools
·
Concise,
no need for additional messaging layer
·
Closer
in design and philosophy to the Web
Cons:
·
Assumes
a point-to-point communication model--not usable for distributed computing
environment where message may go through one or more intermediaries
·
Lack of
standards support for security, policy, reliable messaging, etc., so services
that have more sophisticated requirements are harder to develop ("roll
your own")
·
Tied to
the HTTP transport model
Example
of REST
Use apache http jar
public void callRestWebService(){
System.out.println(".....REST..........");
HttpClient httpclient = new DefaultHttpClient();
HttpGet
request = new HttpGet(wsdlURL);
request.addHeader("company name", "abc");
request.addHeader("getAccessNumbers","http://service.xyz.com/");
ResponseHandler<String> handler = new
BasicResponseHandler();
try
{
result = httpclient.execute(request, handler);
System.out.println("..result..."+result);
} catch
(ClientProtocolException e) {
e.printStackTrace();
} catch
(IOException e) {
e.printStackTrace();
}
httpclient.getConnectionManager().shutdown();
} // end
callWebService()
}
Example
of SOAP
You can use either ksoap or create
soap xml by yourself and send to url
private boolean callSOAPWebService() {
OutputStream
out = null;
int respCode
= -1;
boolean
isSuccess = false;
URL url =
null;
HttpsURLConnection httpURLConnection = null;
try {
url =
new URL(wsdlURL);
httpURLConnection = (HttpsURLConnection) url.openConnection();
do {
//
httpURLConnection.setHostnameVerifier(DO_NOT_VERIFY);
httpURLConnection.setRequestMethod("POST");
httpURLConnection
.setRequestProperty("Connection", "keep-alive");
httpURLConnection
.setRequestProperty("Content-Type", "text/xml");
httpURLConnection.setRequestProperty("SendChunked",
"True");
httpURLConnection.setRequestProperty("UseCookieContainer",
"True");
HttpURLConnection.setFollowRedirects(false);
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
httpURLConnection.setUseCaches(true);
httpURLConnection.setRequestProperty("Content-length",
getReqData().length + "");
httpURLConnection.setReadTimeout(10 * 1000);
//
httpURLConnection.setConnectTimeout(10 * 1000);
httpURLConnection.connect();
out
= httpURLConnection.getOutputStream();
if
(out != null) {
out.write(getReqData());
out.flush();
}
if
(httpURLConnection != null) {
respCode = httpURLConnection.getResponseCode();
Log.e("respCode", ":" + respCode);
}
} while
(respCode == -1);
// If it
works fine
if
(respCode == 200) {
try
{
InputStream responce = httpURLConnection.getInputStream();
String str = convertStreamToString(responce);
System.out.println(".....data....." + new String(str));
// String str
//
=Environment.getExternalStorageDirectory().getAbsolutePath()+"/sunilwebservice.txt";
// File f = new File(str);
//
// try{
// f.createNewFile();
// FileOutputStream fo = new FileOutputStream(f);
// fo.write(b);
// fo.close();
// }catch(Exception ex){
// ex.printStackTrace();
// }
}
catch (Exception e1) {
e1.printStackTrace();
}
} else {
isSuccess = false;
}
} catch (IOException
e) {
e.printStackTrace();
} finally {
if (out
!= null) {
out
= null;
}
if
(httpURLConnection != null) {
httpURLConnection.disconnect();
httpURLConnection
= null;
}
}
return
isSuccess;
}
public static
String createSoapHeader() {
String
soapHeader = null;
soapHeader =
"<?xml version=\"1.0\"
encoding=\"utf-8\"?>"
+
"<soap:Envelope "
+
"xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\""
+
"
xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""
+
" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"" +
">";
return soapHeader;
}
public static
byte[] getReqData() {
StringBuilder requestData = new StringBuilder();
requestData.append(createSoapHeader());
requestData
.append("<soap:Body>"
+ "<getAccessNumbers"
+ " xmlns=\"http://service.xyz.com.com/\""
+ "</getAccessNumbers> </soap:Body>
</soap:Envelope>");
return
requestData.toString().trim().getBytes();
}
private static
String convertStreamToString(InputStream is)
throws
UnsupportedEncodingException {
BufferedReader reader = new BufferedReader(new InputStreamReader(is,
"UTF-8"));
StringBuilder sb = new StringBuilder();
String line
= null;
try {
while
((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch
(IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch
(IOException e) {
e.printStackTrace();
}
}
return
sb.toString();
}
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Android Example
Saturday, December 1, 2012
Soap and Rest Example
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