1
我在Spring AOP是新的,这是我的代码进行测试:Spring AOP的执行顺序
目标内com.kk.entity
包:
@Component
public class AopTargetOne {
private String name;
private String password;
private String email;
private String address;
//getter and setters omitted
}
@Component
public class AopTargetSecond {
private String name;
private int age;
private String email;
//getter and setters omitted
}
看点:
@Component
@Aspect
public class VariableCheckAspect {
//intercept all the setter methods
@Pointcut("execution(* com.kk.entity.*.set*(..))")
private void aopIsSetMethod() {
}
@Before("com.kk.aop.VariableCheckAspect.aopIsSetMethod() && args(val,..)")
public void checkSetValue(JoinPoint joinpoint, String val) {
System.err.println("******** Start check set value with method *********** " + joinpoint.getSignature());
System.out.println("value is:" + val);
System.err.println("******** End ****");
}
}
应用:
AopTargetOne ah = context.getBean(AopTargetOne.class);
ah.setAddress("aopholder address");
ah.setEmail("aopholder email");
ah.setName("aopholder name");
AopTargetSecond ak = (AopTargetSecond) context.getBean("aopTargetSecond");
ak.setName("aopkepper name");
ak.setEmail("aopkepper email");
ak.setAge(23);
我得到了输出:
******** Start check set value with method *********** void com.kk.entity.AopTargetOne.setAddress(String)
******** End ****
value is:aopTargetOne address
******** Start check set value with method *********** void com.kk.entity.AopTargetOne.setEmail(String)
******** End ****
******** Start check set value with method *********** void com.kk.entity.AopTargetOne.setName(String)
******** End ****
******** Start check set value with method *********** void com.kk.entity.AopTargetTwo.setName(String)
******** End ****
value is:aopTargetOne email
value is:aopTargetOne name
value is:aopTargetTwo name
******** Start check set value with method *********** void com.kk.entity.AopTargetTwo.setEmail(String)
******** End ****
value is:aopTargetTwo email
这让我困惑!看起来代码不能以正常顺序运行。
虽然我希望像这样的输出:
******** Start check set value with method *********** void com.kk.entity.AopTargetOne.setAddress(String)
value is:aopTargetOne address
******** End ****
******** Start check set value with method *********** void com.kk.entity.AopTargetOne.setEmail(String)
value is:aopTargetOne email
******** End ****
....
什么问题?有任何解决这个问题的方法吗?
也可以使用System.out.flush()和System.err.flush() –
进行刷新OMG !!!!!!为什么我会犯这样一个愚蠢的错误!谢谢,它有效。 – hguser