java - Spring 启动测试: Unable to instantiate inner configuration class

Question

我想为我的 DAO 层运行 JUnit 测试，而不涉及我的主要 Spring 配置。因此，我声明了一个用 @Configuration 注解的内部类，以便它将覆盖用 @SpringBootApplication 注解的主应用程序类的配置。

这是代码:

@RunWith(SpringRunner.class)
@JdbcTest
public class InterviewInformationControllerTest {

    @Configuration
    class TestConfiguration{

        @Bean
        public InterviewInformationDao getInterviewInformationDao(){
            return new InterviewInformationDaoImpl();
        }
    }

    @Autowired
    private InterviewInformationDao dao;

    @Test
    public void testCustomer() {
        List<Customer> customers = dao.getCustomers();
        assertNotNull(customers);
        assertTrue(customers.size() == 4);

    }

}

但我收到错误:

Parameter 0 of constructor in com.test.home.controller.InterviewInformationControllerTest$TestConfiguration required a bean of type 'com.test.home.controller.InterviewInformationControllerTest' that could not be found.

Answer 1

任何嵌套配置类都必须声明为静态。所以你的代码应该是:

@Configuration
static class TestConfiguration{

    @Bean
    public InterviewInformationDao getInterviewInformationDao(){
        return new InterviewInformationDaoImpl();
    }
}