使用Spring @Async异步执行方法

测试代码：

Java代码 收藏代码
<p>@RunWith(SpringJUnit4ClassRunner.class)</p>@ContextConfiguration(locations = { “/spring/*.xml” })
public class JobUtilsTest{

@Autowired
private DaoService service;

@Test
public void testAsync() throws Exception {
System.out.println(“start” );
service.update(); // ★ 假设这个方法会比较耗时，需要异步执行
System.out.println(“end”);

Thread.sleep(3000); // 因为junit结束会结束jvm，所以让它等会异步线程
}
}

DaoService代码：
Java代码 收藏代码
@Service
public class DaoService {
@Async
public void update() {
try {
Thread.sleep(2000);
// do something
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(“operation complete.”);
}
}

applicationContext.xml

Xml代码 收藏代码
<?xml version=”1.0″ encoding=”UTF-8″?>
<beans xmlns=”http://www.springframework.org/schema/beans”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:p=”http://www.springframework.org/schema/p”
xmlns:context=”http://www.springframework.org/schema/context”
xmlns:mvc=”http://www.springframework.org/schema/mvc” xmlns:task=”http://www.springframework.org/schema/task”
xsi:schemaLocation=”http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-3.0.xsd

http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd”>

<context:component-scan base-package=”com.chinacache” />

<task:annotation-driven />

</beans>

输出结果：

start
end
operation complete.

可以看出，输出不是顺序执行，说明异步调用成功了。