使用@Async实现异步调用

Chapter4-1-2/src/test/java/com/didispace/ApplicationTests.java

@@ -0,0 +1,43 @@
+package com.didispace;
+
+import com.didispace.async.Task;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import java.util.concurrent.Future;
+
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = Application.class)
+public class ApplicationTests {
+
+	@Autowired
+	private Task task;
+
+	@Test
+	public void test() throws Exception {
+
+		long start = System.currentTimeMillis();
+
+		Future<String> task1 = task.doTaskOne();
+		Future<String> task2 = task.doTaskTwo();
+		Future<String> task3 = task.doTaskThree();
+
+		while(true) {
+			if(task1.isDone() && task2.isDone() && task3.isDone()) {
+				// 三个任务都调用完成，退出循环等待
+				break;
+			}
+			Thread.sleep(1000);
+		}
+
+		long end = System.currentTimeMillis();
+
+		System.out.println("任务全部完成，总耗时：" + (end - start) + "毫秒");
+
+	}
+
+}