Spring AOP execution PCD(Pointcut designator) execution expression

mostly,we use execution,here is the execution expression format

execution(modifiers-pattern? ret-type-pattern declaring-type-pattern? name-pattern(param-pattern) throws-pattern?)

pay attention to the space after question mark,and only ret-type-pattern is mandatory,after name-pattern,there is not space between name-pattern and bracket

for example:@Pointcut("execution(* transfer(..))")

means: start is for return type pattern,start means any type

transfer is for name-pattern,it means any method named transfer

two dots .. is parameter pattern,it means any number of parameter with any type

if we change it to (*),it mean one parameter with any type

(*,String) means two parameter with first one can be any type,second one must be String