如何从Java过滤器调用Spring Controller

Question

This is my scenario: I have two applications, both use Spring MVC. I have a Filter class in one of them and a Controller class in the other one. The requirement is a little weird, when a request is made to the application that contains the filter, this filter should invoke the controller in the another application to "keep alive" the session so I need invoking from filter class a controller class and pass as parameter the JSESSIONID. Any suggestions?

Thanks!

Answer 1

At the end, I achieve my goal using AsyncRestTemplate , the call to the controller from filter was something like this:

        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.add("Cookie", "JSESSIONID=" + sessionId);

        HttpEntity<String> httpEntity = new HttpEntity<String>(null, httpHeaders);

        String controllerUrl = CONTROLLER_URL;
        ListenableFuture<ResponseEntity<String>> responseEntityListenableFuture = restTemplate.exchange(controllerUrl, HttpMethod.GET, httpEntity, String.class);

        responseEntityListenableFuture.addCallback(new ListenableFutureCallback<ResponseEntity<String>>() {
            @Override
            public void onSuccess(ResponseEntity<String> stringResponseEntity) {
                // Nothing to do
            }

            @Override
            public void onFailure(Throwable throwable) {
                // Handle your error
            }
        });