Handling requests and calling the next handler

当Vert.x-Web``route一个HTTP Request到一个与之匹配的route，它会向该route的handler传递一个RoutingContext实例.

如果在当前handler里,你不想结束response, 那么你应该调用下一个相匹配的route继续处理该请求.

你没有必要在当前handler执行完之前调用下一个route, 你可以稍后再做这件事.

  1. Route route1 = router.route("/some/path/").handler(routingContext -> {
  3.   HttpServerResponse response = routingContext.response();
  4.   // enable chunked responses because we will be adding data as
  5.   // we execute over other handlers. This is only required once and
  6.   // only if several handlers do output.
  7.   response.setChunked(true);
  9.   response.write("route1\n");
  11.   // Call the next matching route after a 5 second delay
  12.   routingContext.vertx().setTimer(5000, tid -> routingContext.next());
  13. });
  15. Route route2 = router.route("/some/path/").handler(routingContext -> {
  17.   HttpServerResponse response = routingContext.response();
  18.   response.write("route2\n");
  20.   // Call the next matching route after a 5 second delay
  21.   routingContext.vertx().setTimer(5000, tid ->  routingContext.next());
  22. });
  24. Route route3 = router.route("/some/path/").handler(routingContext -> {
  26.   HttpServerResponse response = routingContext.response();
  27.   response.write("route3");
  29.   // Now end the response
  30.   routingContext.response().end();
  31. });

在上面的例子中, route1被写到response的5秒钟之后,route2被写到response,在过了5秒钟之后,route3被写到response,然后结束掉response.

注意这一切的发生都是非阻塞的,