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我想以這種方式安排我的工作： 1）只有一個線程運行它。 （系列） 2）在兩次運行之間有固定間隔Spring @Scheduled fixedDelay無法正常工作
我在我的方法上面使用@Scheduled(fixedDelay = 10000)，在我的applicationContext.xml中使用<task:annotation-driven/>。但根據我的印刷資料，兩個作業之間的間隔不是我設定的10000毫秒。這是爲什麼？
19:07-25 22:38:46.190 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457526190
20:07-25 22:38:48.191 INFO schedule:45 [21-thread-1] - [job#1] use 2000ms
21:07-25 22:38:48.191 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457528191
25:07-25 22:39:03.198 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457543198
26:07-25 22:39:05.201 INFO schedule:45 [21-thread-1] - [job#1] use 2002ms
27:07-25 22:39:05.202 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457545202
31:07-25 22:39:20.205 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457560205
32:07-25 22:39:22.209 INFO schedule:45 [21-thread-1] - [job#1] use 2004ms
33:07-25 22:39:22.210 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457562210
37:07-25 22:39:37.213 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457577213
38:07-25 22:39:39.215 INFO schedule:45 [21-thread-1] - [job#1] use 2002ms
39:07-25 22:39:39.215 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457579215
43:07-25 22:39:54.221 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457594221
44:07-25 22:39:56.225 INFO schedule:45 [21-thread-1] - [job#1] use 2004ms
45:07-25 22:39:56.225 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457596225
49:07-25 22:40:11.525 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457611525
50:07-25 22:40:13.528 INFO schedule:45 [21-thread-1] - [job#1] use 2003ms
51:07-25 22:40:13.529 INFO schedule:47 [21-thread-1] - [job#1] is finished. -----> 1469457613529
55:07-25 22:40:28.237 INFO schedule:33 [21-thread-1] - [job#1] is running. -----> 1469457628237
你可以看到完成和運行之間的時間不是10000ms。 （更像15000）
的代碼是（春季4.2.1）：
@Scheduled(fixedDelay = 10000)
public void timerJob1(){
SCHEDULER.info("[job#1] is running. -----> {}", System.currentTimeMillis());
Stopwatch stopwatch = Stopwatch.createStarted();
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
long use = stopwatch.elapsed(TimeUnit.MILLISECONDS);
SCHEDULER.info("[timeJob1] use {}ms", use);
}
long use = stopwatch.elapsed(TimeUnit.MILLISECONDS);
SCHEDULER.info("[job#1] use {}ms", use);
SCHEDULER.info("[job#1] is finished. -----> {}", System.currentTimeMillis());
}