Question

基本上我有两个bean实现相同的接口。一个用于个人资料＆＃34;默认＆＃34;和另一个＆＃34;整合＆＃34;。

public interface SomeClientIfc { ... }

@Component
@Profile(value={"functional", "integration"})
public class StubSomeNIOClient implements SomeClientIfc {...}

public class SomeNIOClient implements SomeClientIfc {...}

@Configuration
@Profile("default")
public class SomeClientConfiguration {
  @Bean
  public SomeClientIfc someClient() {
      ...
    SomeNIOClient someClient = new SomeNIOClient(numberOfParititions, controllerHosts, maxBufferReadSize,
        connectionPoolSize);
    return someClient;
  }
}

在产品代码中

   @Autowired
   public SomeUserResolver(..., SomeClientIfc someClient) {...}

到目前为止，我确实看到在集成测试中调用了存根bean。然后我想在集成测试中将一些测试数据注入到存根bean中：

@ContextConfiguration(locations = {"/configProperties.xml", "/integrationTests.xml", ...})
@ActiveProfiles("integration")
public class SomeTestBase {
  @Autowired
  private SomeClientIfc someClientIfc;
}

然而，在运行测试时，我收到了错误消息

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'someClientIfc': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.audiencescience.some.client.SomeClientIfc]: Specified class is an interface

我甚至尝试用StubSomeNIOClient替换SomeClientIfc，但仍然得到相同的消息，即使StubSomeNIOClient不是接口。

Answer 1

您应该添加Qualifier注释以及Autowired注释，以指定必须实例化哪个bean：

@Autowired
@Qualifier("my-bean")

Answer 2

它试图注入SomeClientIfc的原因是你调用了变量'someClientIfc'。

在集成环境中，您已初始化了所有3个类：SomeClientIfc，StubSomeNIOClient和SomeNIOClient。这给春天造成了困惑，幸运的是有办法解决这种混乱。

一种方式如上所述，Little Santi，另一种方法是命名变量'stubSomeNIOClient'，参见下面的代码

@ContextConfiguration(locations = {"/configProperties.xml", "/integrationTests.xml", ...})
@ActiveProfiles("integration")
public class SomeTestBase {
  @Autowired
  private SomeClientIfc stubSomeNIOClient;
}

创建bean是错误的，因为它是一个接口？

2 个答案: