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目录
@GetMapping("/email") public Callable<String> order() { System.out.println("主线程开始:" + Thread.currentThread().getName()); Callable<String> result = () -> { System.out.println("副线程开始:" + Thread.currentThread().getName()); Thread.sleep(1000); System.out.println("副线程返回:" + Thread.currentThread().getName()); return "success"; }; System.out.println("主线程返回:" + Thread.currentThread().getName()); return result; }