Spring entry Blog [8. Spring Aop weaving entry point syntax and related case summary]

Aspectj weaving point Syntax:

1. execution (public ** (..) any method of any return value of any class

2. execution (* set * (..) method starting with set of any class

3. execution (* com. xyz. service. AccountService. * (..) specifies the methods in the class for any returned values

4. If execution (* com. xyz. service... *. * (...) returns any value, specify any class or method of the package

Advise summary. Example:

1. Example: directly specify the location and logic to be woven

[Java]
// Specify the weaving method.
@ Before ("execution (public * com. spring. service ..*.*(..))")
Public void BeforeMethod (){
System. out. println ("method start! ");
}


@ AfterReturning ("execution (public * com. spring. service ..*.*(..))")
Public void AfterMethod (){
System. out. println ("After returnning ");
}

2. Specify by defining pointcut:

[Java]
// Define the pointcut woven vertex set
@ Pointcut ("execution (public * com. spring. service ..*.*(..))")
Public void MyMethod (){}

@ Before ("MyMethod ()")
Public void BeforeMethod (){
System. out. println ("method start! ");
}

@ AfterReturning ("MyMethod ()")
Public void AfterMethod (){
System. out. println ("After returnning ");
}

// Intercept before and after execution. Separated by the pjp. proceed Method
@ Around ("MyMethod ()")
Public void aroundProcced (ProceedingJoinPoint pjp) throws Throwable {
System. out. println ("und start ");
Pjp. proceed ();
System. out. println ("und end ");
}

Output result:

Method start!
Und und start
Helloworld
After returnning
Around end

 

Author: zhang6622056