HTTP
This manual will give you a walk-through on how to use the HTTP web services.
Introduction
HTTP Service is the most lightweight and unrestricted remote service: it supports POST and GET requests to a predefined URL. Result is retrieved as is and rendered as a webpage.
Examples
Example #1
This example will show how to call chemicalize.org via an HTTP web service. In this case we want to calculate the pKa values of a molecule.
Fig. 1 HTTP service calling the pKa calculator of chemicalize.org
An example calculation with this webservice can be found below.
Fig. 2 Result of the pKa calculation via the webservice calling chemicalize.org
Example #2
This example shows how to reach the functionalities of chemicalize.org via HTTP API.
HTTPServiceDescriptor descriptor =
new
HTTPServiceDescriptor();
descriptor.setURL(
"http://chemicalize.org/tomcat-files/datapage.jsp"
);
descriptor.addArgument(ServiceArgument.createArgument(
"mol"
,
""
));
descriptor.addArgument(ServiceArgument.createArgument(
"special"
,
""
));
descriptor.addArgument(ServiceArgument.createArgument(
"pka_width"
,
0
));
Object result =
null
;
try
{
result = descriptor.getServiceHandler().callService(descriptor,
"c1ccnccc1"
,
"pka"
,
300
);
}
catch
(ServiceException e) {
System.err.println(
"Service call failed."
);
}
System.out.println(
"Synchronized call returned: "
+ String.valueOf(result));
descriptor.getServiceHandler().callService(descriptor,
new
AsyncCallback<String>() {
@Override
public
void
onSuccess(String result) {
System.out.println(
"Aynchronous call returned: "
+ result);
}
@Override
public
void
onFailure(ServiceException caught) {
System.err.println(
"Asynchronous call failed."
);
}
},
"c1ccnccc1"
,
"pka"
,
300
);