spring framework Simple study memo (2): AOP

spring framework Simple study memo (2): AOP

Essence

--Separate scattered code from essential processing

Way of thinking

--Implementing scattered processing across

Typical application scene

--Log output --Security check --Transaction --Cashew --Monitoring --Exception handling

Source example

@Aspect
@Component
public class MethodStartLoggingAspect {
    @Before("execution(* *..*ServiceImpl.*(..))")
    public void startLog(JoinPoint jp) {
        System.out.println("Method start:" + jp.getSignature());
    }
}

Advice implementation method

point cut formula

--How to select a join point --Example: "execution (* * .. * ServiceImpl. * (..))" --Specified method --Method specification --Class type specification --Other specifications such as name

AOP regular annotation

--Transaction

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