java - Spring Controller start processing after response is sent -

i using spring mvc controller , want start execution of task new thread. thread should not start after response has been sent client.

means - in strict temporal order:

1. request
2. return new responseentity ... / client receives http status 200 ok.
3. processing of task begins.

how achieve ?

i wanted use spring's async abstraction, calling method annotated @async, way have not guarantee new thread waits response sent.

you can use interceptor that. order or events handling request in spring mvc :

• dispatcherservlet request, response pair , determines handling
• [optional] interceptors prehandle called (with option stop processing)
• controller called
• [optional] interceptors posthandle called
• viewresolver , view actual response processing , send response
• [optional] interceptors aftercompletion called

the above on simplificated , aimed @ showing interceptor aftercompletion methods called after response has been sended client, following signature :

void aftercompletion(httpservletrequest request,                      httpservletresponse response,                      object handler,                      exception ex)                      throws exception 

in method, can test occurence of exception , correctness of response (ex == null && response.getstatus == httpservletresponse.sc_ok) before starting processing.