HTTP CacheControl with Jersey and json implementation - rest

Question

I want to add the CacheControl intormation to a GET service that use the json binding.
I found that to add the cacheControl to a response the REST service sound like this:
#GET
#Path("cacheheadertest")
#Produces({"*/*"})
def testcache():javax.ws.rs.core.Response {
val rb:Response.ResponseBuilder = javax.ws.rs.core.Response.ok("chached test message")
val cc = new CacheControl()
cc.setMaxAge(60)
cc.setNoCache(false)
rb.cacheControl(cc).build()
}
but I have a REST service that produce json messages and the jersey library transform automaticcally the java object from java to xml/json.
#GET
#Path("jsontestcache")
#Produces(Array(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML))
def myjsontestservice(#HeaderParam("X-TOKENID") tokenId: String,
#QueryParam("clientId") clientId: String):com.test.MyResultClass = {
val response= new com.test.MyResultClass
[...]
response
}
How can I add the cache control to the response of myjsontestservice service? Do I need to use a filter and append the cachecontrol once the response has been created by jersey?
thanks million
Flavio

Answer 1

You would still need to return a Response object.
def somejson() : Response = {
val builder = Response.ok(new com.test.MyResultClass);
val cc = new CacheControl()
cc.setMaxAge(60)
cc.setNoCache(false)
builder.cacheControl(cc).build()
}
Jersey's interceptors will automatically convert your class into a JSON object.