无法解析类型为xxx的任何bean;限定符:[@javax.enterprise.inject.Any()]
我有一个LoginProvider界面:无法解析类型为xxx的任何bean;限定符:[@javax.enterprise.inject.Any()],java,dependency-injection,cdi,weld,Java,Dependency Injection,Cdi,Weld,我有一个LoginProvider界面: public interface LoginProvider { boolean login(String username, String password); } 和两种不同的实现: public class LoginProvider1Impl implements LoginProvider { @Override public boolean login(String username, String password
public interface LoginProvider {
boolean login(String username, String password);
}
和两种不同的实现:
public class LoginProvider1Impl implements LoginProvider {
@Override
public boolean login(String username, String password) {
...
}
}
public class LoginProvider2Impl implements LoginProvider {
@Override
public boolean login(String username, String password) {
...
}
}
然后是生产者注释:
@Qualifier
@Retention(RetentionPolicy.RUNTIME)
@Target({FIELD, METHOD, PARAMETER, TYPE, CONSTRUCTOR})
public @interface LoginProviderProducer {
}
用于指定登录提供程序实现的注释:
@Retention(RetentionPolicy.RUNTIME)
@Target({FIELD, METHOD, TYPE})
public @interface LoginProviderType {
LoginProviderName value();
public enum LoginProviderName {
PROVIDER1(LoginProvider1Impl.class),
PROVIDER2(LoginProvider2Impl.class);
private Class<? extends LoginProvider> loginProviderType;
private LoginProviderName(Class<? extends LoginProvider> loginProviderType) {
this.loginProviderType = loginProviderType;
}
public Class<? extends LoginProvider> getLoginProviderType() {
return loginProviderType;
}
}
}
使用帮助器时,我会出现以下错误:
org.jboss.weld.exceptions.UnsatisfiedResolutionException:
WELD-001308: Unable to resolve any beans for Type:
class com.xxx.LoginProvider1Impl; Qualifiers: [@javax.enterprise.inject.Any()]
谢谢 我在LoginProvider1Impl和LoginProvider2Impl中添加了注释
@ApplicationScoped
。另一种方法是修改factory方法:
@ApplicationScoped
public class LoginProviderFactory {
@Produces
@LoginProviderProducer
public LoginProvider createLoginProvider(@Any Instance<LoginProvider> instance, InjectionPoint injectionPoint) {
Annotated annotated = injectionPoint.getAnnotated();
LoginProviderType loginProviderTypeAnnotation = annotated.getAnnotation(LoginProviderType.class);
Class<? extends LoginProvider> loginProviderType = loginProviderTypeAnnotation.value().getLoginProviderType();
//return instance.select(loginProviderType).get();
if (loginProviderType == LoginProvider1Impl.class) {
return new LoginProvider1Impl();
} else if (loginProviderType == LoginProvider2Impl.class) {
return new LoginProvider2Impl();
} else
return null;
}
}
@ApplicationScoped
公共类LoginProviderFactory{
@产生
@LoginProviderProducer
public LoginProvider createLoginProvider(@Any实例实例,InjectionPoint InjectionPoint){
Annotated=injectionPoint.getAnnotated();
LoginProviderType loginProviderTypeAnnotation=annotated.getAnnotation(LoginProviderType.class);
ClassLoginProvider1Impl是否确实是部署的一部分?或者是否不缺少beans.xml?我有另一个可用的生产者(一个没有类型/枚举的更简单生产者)所以我猜DI是有效的。关于LoginProvider1Impl不是部署的一部分,你是什么意思?怎么可能没有部署该类?除了帮助程序(但相同的项目)之外,所有的类都在同一个包中。你应该在调试级别(org.jboss.weld DEBUG)打开weld的日志记录然后在发现阶段查找LoginProvider1ImplBean,看看它是否列出并且没有问题。实际上,在重新阅读您的第一条评论后,我想到了bean实例化,并将@ApplicationScoped添加到我的2 LoginProvider实现中,它似乎可以工作……我想,我期望工厂创建它们是错误的我对另一个真正创建bean(而不是使用Instance和InjectionPoint)的生产者感到困惑。
org.jboss.weld.exceptions.UnsatisfiedResolutionException:
WELD-001308: Unable to resolve any beans for Type:
class com.xxx.LoginProvider1Impl; Qualifiers: [@javax.enterprise.inject.Any()]
@ApplicationScoped
public class LoginProviderFactory {
@Produces
@LoginProviderProducer
public LoginProvider createLoginProvider(@Any Instance<LoginProvider> instance, InjectionPoint injectionPoint) {
Annotated annotated = injectionPoint.getAnnotated();
LoginProviderType loginProviderTypeAnnotation = annotated.getAnnotation(LoginProviderType.class);
Class<? extends LoginProvider> loginProviderType = loginProviderTypeAnnotation.value().getLoginProviderType();
//return instance.select(loginProviderType).get();
if (loginProviderType == LoginProvider1Impl.class) {
return new LoginProvider1Impl();
} else if (loginProviderType == LoginProvider2Impl.class) {
return new LoginProvider2Impl();
} else
return null;
}
}