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This article will explain in detail how SpringMVC uses Callable for asynchronous processing. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Use Callable for asynchronous processing

Using Callable for asynchronous processing is similar to DeferredResult. The difference is that the Callable is handed over to the TaskExecutor specified by the system.

According to the official description, the Spring MVC process is as follows:

Controller returns Callable

Spring MVC calls request.startAsync (), turns on async, and submits Callable to a task thread pool.

DispatcherServlet and all Filter exit the current request thread

The business application returns a value in an asynchronous thread, and Spring MVC sends the request again

DispatcherServlet is called again and uses the return value of Callable

@ RequestMapping (value = "/ async/demo") public Callable async () {Callable callable = ()-> String.valueOf (System.currentTimeMillis ()); / / synchronous return return callable;} this is the end of the article on "how SpringMVC uses Callable for asynchronous processing". I hope the above content can be of some help to you so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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