Java 如何在spring中在后期构造时自动关联此依赖项
我在spring托管代码的Java 如何在spring中在后期构造时自动关联此依赖项,java,spring,spring-boot,dependency-inversion,Java,Spring,Spring Boot,Dependency Inversion,我在spring托管代码的@PostConstruct块中有以下代码 class A { private BoogleFeature boogle; @PostConstruct public void createBoggleClient() { SDKPersona.SDKPersonaBuilder sdkBuilder = new AppIdentifier.SDKPer
@PostConstruct
块中有以下代码
class A {
private BoogleFeature boogle;
@PostConstruct
public void createBoggleClient() {
SDKPersona.SDKPersonaBuilder sdkBuilder =
new AppIdentifier.SDKPersonaBuilder()
.setRegistryId(config.getRegistryId())
.setRegistrySecret(config.getRegistrySecret())
boggle = new BoggleFeature(sdkBuilder.build());
}
}
}
现在我不想做一个
boggle=newbogglefeature(sdkBuilder.build())代码>并将其设置为bean,并将其作为依赖项注入。我怎样才能做到这一点。您是否尝试了下面的内容,您可以在come配置类中输入下面的代码
@Bean(name="boggleFeature")
public BoggleFeature createBoggleClient() {
SDKPersona.SDKPersonaBuilder sdkBuilder =
new AppIdentifier.SDKPersonaBuilder()
.setRegistryId(config.getRegistryId())
.setRegistrySecret(config.getRegistrySecret())
return new BoggleFeature(sdkBuilder.build());
}
然后,您可以在任何地方使用autowired
@Autowired
private BoogleFeature boogle
您可以使用GenericApplicationContext
在@PostConstruct
期间动态注册bean,方法如下:
@Component
public class BoogleFactory {
@Autowired
private GenericApplicationContext context;
@PostConstruct
public void createBoggleClient() {
//build the sdk
String sdk = "Boogle SDK";
//then register the bean in spring context with constructor args
context.registerBean(BoogleFeature.class,sdk);
}
}
要动态注册的bean:
public class BoogleFeature {
private String sdk;
public BoogleFeature(String sdk) {
this.sdk = sdk;
}
public String doBoogle() {
return "Boogling with " + sdk;
}
}
然后,您可以在应用程序中的任何位置使用:
@Component
class AClassUsingBoogleFeature {
@Autowired
BoogleFeature boogleFeature; //<-- this will have the sdk instantiated already
}
registerBean
有更强大的选项。我们的想法是去掉新的关键字并将其作为依赖项注入,对吧您应该提到@Bean
部分应该进入@Configuration
类。一般来说,您应该解释代码是如何解决的problem@rkosegi,根据您的suggestion@station您必须执行一次,然后您可以使用if anywhere as Dependency无法撤消,这将如何删除mynew
关键字。如果你能举一个例子help@station我已经更新了我的答案以显示:1/如何使用构造函数ARGS注册bean---2/如何在其他任何地方使用bean---3/测试证明它是有效的。尝试了这个方法但没有成功,bean没有注册:(我已经测试过了,它可以正常工作。我使用的是Spring boot 2.4.3。请仔细检查每一步。
@SpringBootTest
public class BooglerTest {
@Autowired
BoogleFeature boogleFeature;
@Test
void boogleFeature_ShouldBeInstantiated() {
assert "Boogling with Boogle SDK".equals(boogleFeature.doBoogle());
}
}