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grailsgrails-plugingrails-2.0grails-controllergrails3

Json calling rest url to grails gsp page

I have tried to find an example who shows my how to render a rest url like this : http://localhost:8080/api/Cars in a gsp page.

I have tried every example people provides. No one of them is totally correct or its not working for my.

Some of the things i have tried is grails.converters.JSON.parse, Jsonslurper, HTTPBuilder.

Can someone give me a step by step introduction on how to just make a call from this url: "http://localhost:8080/api/Cars" to an controller who renders the json to gsp page.

By the way im using grails 3.

Thanks in advance

Solution

  • You can do something like this

    def cars
def url = 'http://localhost:8080/api/Cars'

def httpClient = HttpClients.createDefault()
HttpGet httpGet = new HttpGet(url)
def response = httpClient.execute(httpGet)

cars = EntityUtils.toString(response.getEntity())
cars = new JsonSlurper().parseText(cars);