Spring依赖注入Spring TestExecutionListeners无法正常工作

Question

如何在我编写的扩展AbstractTestExecutionListener的TestExecutionListener类中使用Spring依赖注入？

Spring DI似乎不适用于TestExecutionListener类.问题示例:

AbstractTestExecutionListener:

class SimpleClassTestListener extends AbstractTestExecutionListener {

    @Autowired
    protected String simplefield; // does not work simplefield = null

    @Override
    public void beforeTestClass(TestContext testContext) throws Exception {
        System.out.println("simplefield " + simplefield);
    }
}

配置文件:

@Configuration
@ComponentScan(basePackages = { "com.example*" })
class SimpleConfig {

    @Bean
    public String simpleField() {
        return "simpleField";
    }

}

JUnit测试文件:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = { SimpleConfig.class })
@TestExecutionListeners(mergeMode = TestExecutionListeners.MergeMode.MERGE_WITH_DEFAULTS, listeners = {
    SimpleClassTestListener.class })
public class SimpleTest {

    @Test
    public void test(){
        assertTrue();
    }
}

正如代码注释中所强调的那样,当我运行它时,它将打印"simplefield null",因为simplefield永远不会被注入一个值.

Answer 1

只需为整个TestExecutionListener添加自动装配。

@Override
public void beforeTestClass(TestContext testContext) throws Exception {
    testContext.getApplicationContext()
            .getAutowireCapableBeanFactory()
            .autowireBean(this);
    // your code that uses autowired fields
}

检查github中的示例项目。