想要增加web容器的并發(fā)量可以使用這種方式
使用callable 線程池 這個(gè)線程池是spring實(shí)現(xiàn)的一個(gè)簡(jiǎn)單的線程池不會(huì)從用線程

@RestController
public class AsyncController {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

    @RequestMapping("/order")
    public DeferredResult order() throws InterruptedException {
        logger.info("main thread start");
//        Thread.sleep(1000);
        Callable<String> result = new Callable<String>() {
            @Override
            public String call() throws Exception {
                logger.info("secondary thread start");
                //延時(shí)
                Thread.sleep(1000);
                logger.info("secondary thread return");
                return "success";
            }
        };
        logger.info("main thread return");
        return result;
    }
}

這樣寫了之后 可以再開(kāi)辟一個(gè)線程來(lái)執(zhí)行請(qǐng)求 增大訪問(wèn)并發(fā)