User.java

package com.bjsxt.model; 
 
public class User { 
 private String username; 
 private String password; 
 public String getUsername() { 
 return username; 
 } 
 public void setUsername(String username) { 
 this.username = username; 
 } 
 public String getPassword() { 
 return password; 
 } 
 public void setPassword(String password) { 
 this.password = password; 
 } 
} 
/** 
*接口类 
*/ 
package com.bjsxt.dao; 
import com.bjsxt.model.User; 
 
 
public interface UserDAO { 
 public void save(User user); 
} 

package com.bjsxt.dao.impl; 
 
import org.springframework.stereotype.Component; 
 
import com.bjsxt.dao.UserDAO; 
import com.bjsxt.model.User; 
 
@Component("u") 
public class UserDAOImpl implements UserDAO { 
 
 public void save(User user) { 
 
 System.out.println("user save11d!"); 
 /*throw new RuntimeException("exception");*/ //抛异常 
 } 
 
}

package com.bjsxt.service; 
import javax.annotation.Resource; 
 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.beans.factory.annotation.Qualifier; 
import org.springframework.stereotype.Component; 
 
import com.bjsxt.dao.UserDAO; 
import com.bjsxt.model.User; 
 
 
@Component("userService") 
public class UserService { 
 
 private UserDAO userDAO; 
 
 public void init() { 
 System.out.println("init"); 
 } 
 
 public void add(User user) { 
 userDAO.save(user); 
 } 
 public UserDAO getUserDAO() { 
 return userDAO; 
 } 
 
 @Resource(name="u") 
 public void setUserDAO( UserDAO userDAO) { 
 this.userDAO = userDAO; 
 } 
 
 public void destroy() { 
 System.out.println("destroy"); 
 } 
} 

package com.bjsxt.aop; 
 
import org.aspectj.lang.annotation.After; 
import org.aspectj.lang.annotation.AfterReturning; 
import org.aspectj.lang.annotation.AfterThrowing; 
import org.aspectj.lang.annotation.Aspect; 
import org.aspectj.lang.annotation.Before; 
import org.aspectj.lang.annotation.Pointcut; 
import org.springframework.stereotype.Component; 
 
@Aspect 
@Component 
public class LogInterceptor { 
 @Pointcut("execution(public * com.bjsxt.service..*.add(..))") 
 public void myMethod(){}; 
 
 /*@Before("execution(public void com.bjsxt.dao.impl.UserDAOImpl.save(com.bjsxt.model.User))")*/ 
 @Before("myMethod()") 
 public void before() { 
 System.out.println("method staet"); 
 } 
 @After("myMethod()") 
 public void after() { 
 System.out.println("method after"); 
 } 
 @AfterReturning("execution(public * com.bjsxt.dao..*.*(..))") 
 public void AfterReturning() { 
 System.out.println("method AfterReturning"); 
 } 
 @AfterThrowing("execution(public * com.bjsxt.dao..*.*(..))") 
 public void AfterThrowing() { 
 System.out.println("method AfterThrowing"); 
 } 
} 

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xmlns:context="http://www.springframework.org/schema/context" 
 xmlns:aop="http://www.springframework.org/schema/aop" 
 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd 
 http://www.springframework.org/schema/context 
 http://www.springframework.org/schema/context/spring-context-2.5.xsd 
 http://www.springframework.org/schema/aop 
 http://www.springframework.org/schema/aop/spring-aop-3.1.xsd 
 "><!-- 要添加最后2行 --> 
 
 <context:annotation-config /> 
 <context:component-scan base-package="com.bjsxt"/> <!-- 自动扫描 --> 
 <aop:aspectj-autoproxy/> <!-- 要添加本行 --> 
</beans> 

package com.bjsxt.service; 
import org.junit.Test; 
import org.springframework.context.ApplicationContext; 
import org.springframework.context.support.ClassPathXmlApplicationContext; 
 
import com.bjsxt.model.User; 
 
//Dependency Injection 
//Inverse of Control 
public class UserServiceTest { 
 
 @Test 
 public void testAdd() throws Exception { 
 ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); 
 
 
 UserService service = (UserService)ctx.getBean("userService"); 
 System.out.println(service.getClass()); 
 service.add(new User()); 
 System.out.println("###"); 
 
 ctx.destroy(); 
 
 } 
 
} 

class com.bjsxt.service.UserService$$EnhancerByCGLIB$$7b201784
method staet
user save11d!
method AfterReturning
method after
###

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xmlns:context="http://www.springframework.org/schema/context" 
 xmlns:aop="http://www.springframework.org/schema/aop" 
 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd 
 http://www.springframework.org/schema/context 
 http://www.springframework.org/schema/context/spring-context-2.5.xsd 
 http://www.springframework.org/schema/aop 
 http://www.springframework.org/schema/aop/spring-aop-3.1.xsd 
 "><!-- 要添加最后2行 --> 
 
 <context:annotation-config /> 
 <context:component-scan base-package="com.bjsxt"/> 
 <bean id="logInterceptor" class="com.bjsxt.aop.LogInterceptor"></bean> 
 <aop:config> 
 <aop:pointcut expression="execution(public * com.bjsxt.service..*.add(..))" 
 id="servicePointcut"/> 
 <aop:aspect id="logAspect" ref="logInterceptor"> 
 <aop:before method="before" pointcut-ref="servicePointcut" /> 
 </aop:aspect> 
 
 </aop:config> 
</beans>