Perform a simple HTTP GET and print the response:
def http = new HTTPBuilder('http://www.google.com') http.get( path:'/search', query:[q:'Groovy'] ) { resp, reader -> println "response status: ${resp.statusLine}" println 'Response data: -----' System.out << reader println '\n--------------------' }
Note that in this version, the closure is a response handler block, that is only executed on a _successful_ response. A failure response (i.e. status code of 400 or greater) is handled by the builder's default failure handler. (TODO link.)
This is a longer request form for other HTTP methods, which also allows for response-code-specific handlers:
http.request(GET,TEXT) { req -> url.host = 'www.google.com' // overrides default URL headers.'User-Agent' = 'Mozilla/5.0' response.success = { resp, reader -> println 'my response handler!' assert resp.statusLine.statusCode == 200 println resp.statusLine System.out << reader // print response stream } response.'401' = { resp -> // fired only for a 401 (access denied) status code println 'access denied' } }
You can also set a default response handler called for any status code > 399 that is not matched to a specific handler. Setting the value outside a request closure means it will apply to all future requests with this HTTPBuilder instance:
http.handler.failure = { resp -> println "Unexpected failure: ${resp.statusLine}" }
In this example, a registered content-type parser recognizes the response content-type header, and automatically parses the response data into a JSON object before it is passed to the 'success' response handler closure.
http.request( 'http://ajax.googleapis.com', GET, JSON ) { url.path = '/ajax/services/search/web' url.query = [ v:'1.0', q: 'Calvin and Hobbes' ] response.success = { resp, json -> assert json.size() == 3 println "Query response: " json.responseData.results.each { println " ${it.titleNoFormatting} : ${it.visibleUrl}" } } }