Java:JSR330：修订间差异
imported>Soleverlee 以“[https://jcp.org/en/jsr/detail?id=330 JSR330]定义了Java依赖注入的标准。主要提供了一系列的定义（[http://docs.oracle.com/javaee/6/api/javax/inje...”为内容创建页面 |
imported>Soleverlee |
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| 第7行： | 第7行： | ||
*Singleton Identifies a type that the injector only instantiates once. | *Singleton Identifies a type that the injector only instantiates once. | ||
=@Inject= | =@Inject= | ||
see [https://dzone.com/articles/java-ee6-cdi-named-components this] post | |||
<source lang="java"> | |||
public interface Payment { | |||
void pay(BigDecimal amount); | |||
} | |||
public class CashPaymentImpl implements Payment { | |||
private static final Logger LOGGER = Logger.getLogger(CashPaymentImpl.class.toString()); | |||
@Override | |||
public void pay(BigDecimal amount) { | |||
LOGGER.log(Level.INFO, "payed {0} cash", amount.toString()); | |||
} | |||
} | |||
@Inject private Payment payment; | |||
</source> | |||
=@Named= | =@Named= | ||
=@Singleton= | =@Singleton= | ||
2016年11月28日 (一) 01:50的版本
JSR330定义了Java依赖注入的标准。主要提供了一系列的定义（javax.inject.*）：
- Provider<T> Provides instances of T.
- Inject Identifies injectable constructors, methods, and fields.
- Named String-based qualifier.
- Qualifier Identifies qualifier annotations.
- Scope Identifies scope annotations.
- Singleton Identifies a type that the injector only instantiates once.
@Inject
see this post
public interface Payment {
void pay(BigDecimal amount);
}
public class CashPaymentImpl implements Payment {
private static final Logger LOGGER = Logger.getLogger(CashPaymentImpl.class.toString());
@Override
public void pay(BigDecimal amount) {
LOGGER.log(Level.INFO, "payed {0} cash", amount.toString());
}
}
@Inject private Payment payment;