一、看一下简单的通过xml的aop配置
1.首先创建一个简单的student类
public class student {
private integer age;
private string name;
public void setage(integer age) {
this.age = age;
}
public integer getage() {
system.out.println(age : + age);
return age;
}
public void setname(string name) {
this.name = name;
}
public string getname() {
system.out.println(name : + name);
return name;
}
public void printthrowexception() {
system.out.println(exception raised);
throw new illegalargumentexception();
}
}
2.创建一个简单的aspect切面class
public class logging {/**
* this is the method which i would like to execute
* before a selected method execution.
*/public void beforeadvice() {
system.out.println(going to setup student profile.);
}
/**
* this is the method which i would like to execute
* after a selected method execution.
*/public void afteradvice() {
system.out.println(student profile has been setup.);
}
/**
* this is the method which i would like to execute
* when any method returns.
*/
public void afterreturningadvice(object retval) {
system.out.println(returning: + retval.tostring());
}
/**
* this is the method which i would like to execute
* if there is an exception raised.
*/
public void afterthrowingadvice(illegalargumentexception ex) {
system.out.println(there has been an exception: + ex.tostring());
}
}
3.springaop.xml配置
【切面class】
【切点】
【方法执行之前触发切面class的beforeadvice方法】
【方法执行之后触发切面class的afteradvice方法】
分析一下这个execution(* com.seeyon.springbean.aop.student.get*(..))切点表达式：
(1)第一个*代表方法的返回值是任意的
(2)get*代表以get开头的所有方法
(3)(..)代表方法的参数是任意个数
4.main方法
public class test {
public static void main(string[] args) {
applicationcontext context =
new classpathxmlapplicationcontext(springaop.xml);
student student = (student) context.getbean(student);
student.getname();
// student.getage();
// student.printthrowexception();
}
}
5.输出结果
going to setup student profile.
name : yangyu
student profile has been setup.
二、spring aop注解的使用。
1.首先创建一个简单的student类（同一.1中，请看上面