java - @Autowired 在类里面

Question

我在使用 @Autowired 注释时遇到问题

autoWiredLocallyTest() 通过

autoWireAtClassTest() 失败

这是我的测试用例:

    /**
   * Spring Autowired test.
   */
   @ContextConfiguration(locations = {"classpath:applicationContext.xml"})
   @RunWith(SpringJUnit4ClassRunner.class)
   public class AutowiredTest {
    @Autowired
    private ActionBeans localBeans;

    @Test
    public void autoWiredLocallyTest(){
        //pre-test
        Assert.assertNotNull(localBeans);
    }

    @Test
    public void autoWireAtClassTest(){
        TestClazz t = new TestClazz();
        boolean isAutoWiredFromClass =  t.isAutowired();
        Assert.assertTrue(isAutoWiredFromClass);
    }
   }

TestClazz 是:

public class TestClazz {
    @Autowired
    @Qualifier("actions")
    private ActionBeans tempowieBiny;

    public boolean isAutowired(){
        return(this.tempowieBiny!=null);
    }
}

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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <import resource="actions.xml" />
    <import resource="datasources.xml" />
</beans>

actions.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id='actions' class="net.virtalab.jsonio.configuration.actions.ActionBeans" scope="singleton">
        <qualifier value="actions" />
    </bean>

</beans>

哪些事情是错误的或没有做，但需要做的？

我使用 Spring 3.2.5-RELEASE。

Answer 1

您正在使用 new 运算符 (TestClazz t = new TestClazz();) 实例化 TestClazz。如果您希望正确初始化 @autowired beans，您需要从 spring 上下文加载它。

尝试:

@Autowired
ApplicationContext testContext;


@Test
public void autoWireAtClassTest(){
    // TestClazz t = new TestClazz();
    TestClazz t = (TestClazz)testContext.getBean(TestClazz.class);
    boolean isAutoWiredFromClass =  t.isAutowired();
    Assert.assertTrue(isAutoWiredFromClass);
}