Spring @Async异步执行方法

测试代码：

 

<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：

@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 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。