Java--简单的Spring AOP配置以及AOP事物管理,JDK/GCLib动态代理

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

    <bean id="student" class="com.seeyon.SpringBean.aop.Student" p:name="yangyu" p:age="27"></bean>
<bean id="logging" class="com.seeyon.SpringBean.aop.Logging"></bean> <!--XML方式配置Spring AOP-->
<aop:config>
<aop:aspect id="log" ref="logging"> 【切面class】
<aop:pointcut id="studentMethod" expression="execution(* com.seeyon.SpringBean.aop.Student.get*(..))"/> 【切点】
<aop:before pointcut-ref="studentMethod" method="beforeAdvice"/> 【方法执行之前触发切面class的beforeAdvice方法】
<aop:after pointcut-ref="studentMethod" method="afterAdvice"/> 【方法执行之后触发切面class的afterAdvice方法】
</aop:aspect>
</aop:config>

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

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