Spring?切面(@Pointcut)

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目录结构
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package OA.Dao;import OA.Proxy.Action;public interface IUserDao<T> {@Action(name="注解式Add操作")public void Add(T T);public void Delete(int id);
}

package OA.Dao;import org.springframework.stereotype.Repository;import OA.Proxy.Action;
import OA.Entity.User;@Repository("mDao")
public class UserDao implements IUserDao<User> {@Override@Action(name="注解式Add操作")public void Add(User T) {System.out.println("数据层：添加动作" + T.getName() + T.getId());}@Overridepublic void Delete(int id) {System.out.println("数据层：删除动作");}}

package OA.Entity;public class User {private int id;private String name;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

package OA.Proxy;import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
public @interface Action {String name();
}

package OA.Service;public interface IUserService<T> {public void Add(T T);public void Delete(int id);
}

package OA.Service;import javax.annotation.Resource;import org.springframework.stereotype.Service;
import OA.Dao.IUserDao;
import OA.Entity.User;@Service("mService")
public class UserService implements IUserService<User> {private IUserDao<User> IUserDao;public IUserDao<User> getIUserDao() {return IUserDao;}@Resourcepublic void setIUserDao(IUserDao<User> iUserDao) {IUserDao = iUserDao;}@Overridepublic void Add(User T) {System.out.println("service:添加" + T.getName() + T.getId());IUserDao.Add(T);}@Overridepublic void Delete(int id) {System.out.println("service:删除");IUserDao.Delete(id);}}

package OA.Proxy;import java.lang.annotation.Annotation;
import java.lang.reflect.Method;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;import OA.Entity.Logger;@Component("logAspect")
@Aspect
public class LogerAspect {// 第一个* 表示任意返回类型// 任意类// 以add开头的任意方法// ..代表任意参数// /**// * 在程序运行之前运行// */// @Before("execution(* OA.Dao.*.Add*(..))||execution(*// OA.Service.*.Delete*(..))")// public void Before() {// Logger.info("前:日志");// }// /**// * 在程序运行之后运行// */// @After("execution(* OA.Service.*.Delete*(..))")// public void After() {// Logger.info("后:日志");// }// @Around("execution( * OA.Dao.*.Add*(..))")@Pointcut("@annotation(OA.Proxy.Action)")public void annotationPointcut() {}@Before("annotationPointcut()")public void Before(JoinPoint JoinPoint) {System.out.println("运行");MethodSignature methodSignature = (MethodSignature) JoinPoint.getSignature();Method method = methodSignature.getMethod();Annotation[] totp=method.getDeclaredAnnotations();System.out.println(totp.length);for (Annotation annotation : totp) {System.out.println(annotation);}if (method.isAnnotationPresent(Action.class)) {System.out.println("进入IF");System.out.println(method.getAnnotation(Action.class));}System.out.println("方法名："+method.getName());}@After("execution( * OA.Dao.*.Add*(..))")public void After() {Logger.info("后:日志");}public void logAround(ProceedingJoinPoint pj) throws Throwable {Logger.info("前:日志");pj.proceed();System.out.println(pj.getTarget());System.out.println(pj.getSignature().getName());Logger.info("后:日志");}
}

package OA.Service;import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import OA.Action.UserAction;
import OA.Dao.UserDao;
import OA.Entity.User;public class Test {public static void main(String[] args) {AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();User u = new User();u.setId(1);u.setName("name");/* 读取文件 */BeanFactory factory = new ClassPathXmlApplicationContext("beas.xml");/* 读取mAction Id的节点 */// UserAction UserAction = (UserAction) factory.getBean(UserAction.class, "mAction");UserAction UserAction = (UserAction) factory.getBean(UserAction.class);UserAction.setUser(u);UserAction.Add();}
}

/*console*/
action:添加name1
service:添加name1
运行
1
@OA.Proxy.Action(name=注解式Add操作)
进入IF
@OA.Proxy.Action(name=注解式Add操作)
方法名：Add
数据层：添加动作name1
后:日志

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