看两种advice
after() returning() : pointcut_expression {}
after() throwing() : pointcut_expression {}
HelloWorld.java
package aspectj;
public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
Teacher teacher=new Teacher();
teacher.second();
}
}
Teacher.java
package aspectj;
public class Teacher {
public int second()
{
System.out.println("second");
return 1;
}
}
HelloAspect.aj
package aspectj;
public aspect HelloAspect {
pointcut PrintPointCut() : call(* aspectj.Teacher.second(..));
after() returning( Object o): PrintPointCut() {
System.out.println("拦截位置"+thisJoinPoint.getSourceLocation()+"object---"+o);
}
}
输出：
image.png
修改Teacher.java
package aspectj;
public class Teacher {
public int second()
{
System.out.println("second");
int i=1/0;
return 1;
}
}
HelloAspect.aj
package aspectj;
public aspect HelloAspect {
pointcut PrintPointCut() : call(* aspectj.Teacher.second(..));
after() throwing (Exception e): PrintPointCut() {
System.out.println("拦截位置"+thisJoinPoint.getSourceLocation()+"exception---"+e);
}
}
image.png
around
Teacher.java
package aspectj;
public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
Teacher teacher=new Teacher();
int value=teacher.second(2);
System.out.println("main---"+value);
}
}
HelloWorld.java
package aspectj;
public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
Teacher teacher=new Teacher();
int value=teacher.second(2);
System.out.println("main---"+value);
}
}
HelloAspect.aj
package aspectj;
public aspect HelloAspect {
pointcut PrintPointCut(int x) : execution(* aspectj.Teacher.second(int))&&args(x);
int around(int x) : PrintPointCut(x) {
System.out.println("source---location---"+thisJoinPoint.getSourceLocation());
System.out.println("pointcut----"+x);
System.out.println(thisJoinPoint+"-------执行前");
int newValue=proceed(x*3);
System.out.println(thisJoinPoint+"-------执行后");
return newValue;
}
}
输出：
image.png
