HTTP methods and parameters 

Having defined a request endpoint using either url, or host and the path-appending verb, you may now wish to change the HTTP method from its default of GET.

HTTP methods 

Methods may be specified with correspondingly named request-building methods.

def myPost = myRequest.POST

Other HTTP methods can be specified in the same way.

HEAD
GET
POST
PUT
DELETE
PATCH
TRACE
OPTIONS

POST parameters 

To add form-encoded parameters to the request body, you can use RequestBuilder#addParameter method.

def myPostWithParams = myPost.addParameter("key", "value")

POST verb 

The << verb sets the request method to POST and adds form-encoded parameters to the body at once:

def myPostWithParams = myRequest << Map("key" -> "value")

You can also POST an arbitrary string. Be sure to set MIME media type and character encoding:

def myRequestAsJson = myRequest.setContentType("application/json", "UTF-8")
def myPostWithBody = myRequestAsJson << """{"key": "value"}"""

Query parameters 

Query parameters can be appended to request paths regardless of the method. These should be added after all path elements.

def myRequestWithParams = myRequest.addQueryParameter("key", "value")

Query parameter names can repeat in case you need provide multiple values for a query parameter key.

def myRequestWithParams = myRequest
  .addQueryParameter("key", "value1")
  .addQueryParameter("key", "value2")

Query parameters can also be added without values to create urls such as http://mydomain.com?param by just providing the key:

def myRequestWithParams = myRequest
  .addQueryParameter("key")

You can also add query parameters with the <<? verb.

def myRequestWithParams = myRequest <<? Map("key" -> "value")

The <<? verb can consume any kind of Iterable that contains a (String, String), so if you’d like to use the verb form to add multiple query parameters with the same key, you’d just switch to using a List:

def myRequestWithParams = myRequest <<? List(
  ("key", "value1"),
  ("key", "value2")
)

PUT a file 

Similar to the POST verb, Dispatch supplies a <<< verb to apply the PUT method and set a java.io.File as the request body.

def myPut = myRequest <<< myFile

If you wish to supply a string instead of a file, use a setBody method of the RequestBuilder class. Its variants support a number of input types and do not imply a particular HTTP method.