Expression asterisk (*) in Spring AOP

<AOP: config> <AOP: pointcut id = "method" expression = "execution (** .. service. Save (...)"/> </AOP: config>
 

Complete Expression type, as follows:
Execution (modifiers-pattern?Ret-type-PatternDeclaring-type-pattern?Name-pattern (param-pattern)Throws-Pattern ?)

Modifiers-pattern indicates the modifier (public/protect, etc)

Ret-type-pattern indicates the return type (INT/string/long, etc)

Declaring-type-pattern indicates the matched path (under what package)

Name-pattern indicates the name of the matching method.

Throws-Pattern: exception matching type
Can I leave it blank with a question mark ,? 0 or 1 in a regular expression.

The return type mode determines that the return type of the method must match a connection point in sequence. The most frequently used return type mode is*It indicates matching any return type. Only the methods of the given type are returned. The name pattern matches the method name. You can use
*Wildcard characters are used as all or part of naming rules. The parameter mode is a bit complicated:()Matches a method that does not accept any parameters, while
(..)Matches a method that accepts any number of parameters (zero or more ). Mode(*)Matches a method that accepts any type of parameter. Mode
(*, String)Matches a method that accepts two parameters. The first method can be of any type, and the second method must be of the string type. See
Language semantics section.

 

Below are some examples of common entry point expressions.

•  

  Match all methods

• Execution (**(..))

• Execution of any public method:

• Execution (Public **(..))

• Execution of any method starting with "set:

  Execution (* Set *(..))

• UserserviceExecution of any method of the interface:

  Execution (* COM. Service. userservice .*(..))

• Define the execution of any method in the service package:

  Execution (* COM. Service .*.*(..))

• Define the execution of any method in the service package or sub-package:

  Execution (* COM. Service ..*.*(..))