Spring4-AOP通知

1.创建Maven项目,项目名称springdemo50,如图所示

2.配置Maven,修改项目中的pom.xml文件,修改内容如下

<project xmlns="http:///POM/4.0.0" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http:///POM/4.0.0 http:///xsd/maven-4.0.0.xsd">
  <modelVersion>1.0.0</modelVersion>
  <groupId>shequ</groupId>
  <artifactId>springdemo13</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <properties>
  	<java.version>1.7</java.version>
  	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  	<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  </properties>
  
  <repositories>
  	<repository>
  		<id>codelds</id>
  		<url>https://code.lds.org/nexus/content/groups/main-repo</url>
  	</repository>
  </repositories>
  
  <dependencies>
  	<dependency>
  		<groupId>javax.annotation</groupId>
  		<artifactId>jsr250-api</artifactId>
  		<version>1.0</version>
  	</dependency>
  	
  	<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-test</artifactId>
  		<version>4.1.4.RELEASE</version>
  	</dependency>
  	
  	<dependency>
  		<groupId>junit</groupId>
  		<artifactId>junit</artifactId>
  		<version>4.10</version>
  	</dependency>
  	
  	<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-core</artifactId>
  		<version>4.1.4.RELEASE</version>
  	</dependency>
  	
  	<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.1.4.RELEASE</version>
    </dependency>
    
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.1.4.RELEASE</version>
    </dependency>
    
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.34</version>
    </dependency>
       
  </dependencies>
  <build/>
</project>

3.在src/main/java下创建实体Bean Customer,包名(com.mycompany.shequ.bean)如图所示

4.实体Bean Customer的内容如下

package com.mycompany.shequ.bean;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("customerBean")
public class Customer {
	private String name;
	private String email;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		 = name;
	}
	public String getEmail() {
		return email;
	}
	
	@Value("#{('dengyunshuo@' matches '^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)" +
	"*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$') ? 'dengyunshuo@':'不合法'}")
	public void setEmail(String email) {
		this.email = email;
	}
}

5.在src/main/java下创建接口ICustomerDao,包名(com.mycompany.shequ.dao)如图所示

6.ICustomerDao的内容如下

package com.mycompany.shequ.dao;

public interface ICustomerDao {
	public void showMe();
}

7.在src/main/java下创建ICustomerDao的实现类CustomerDaoImpl,包名

8.ICustomerDao的实现类CustomerDaoImpl的内容如下

package com.mycompany.shequ.dao.impl;

import com.mycompany.shequ.dao.ICustomerDao;

public class CustomerDaoImpl implements ICustomerDao {

	public void showMe() {
		System.out.println("I'm CustomerDaoImpl");
	}

}

9.在src/main/java下创建业务Bean ICustomerService接口,包名(com.mycompany.shequ.service)如图所示

10.ICustomerService接口的内容如下

package com.mycompany.shequ.service;

public interface ICustomerService {
	public void showMe();
}

11.在src/main/java下创建业务Bean ICustomerService接口的实现类CustomerServiceImpl,包名(com.mycompany.shequ.service.impl)如图所示

12.业务Bean ICustomerService接口的实现类CustomerServiceImpl的内容如下

package com.mycompany.shequ.service.impl;

import com.mycompany.shequ.dao.ICustomerDao;
import com.mycompany.shequ.service.ICustomerService;

public class CustomerServiceImpl implements ICustomerService {
	
	private ICustomerDao customerDao;

	public ICustomerDao getCustomerDao() {
		return customerDao;
	}

	public void setCustomerDao(ICustomerDao customerDao) {
		this.customerDao = customerDao;
	}

	public void showMe() {
		customerDao.showMe();
	}

}

13.在src/main/java下创建前置通知实现类MethodBefore,包名(com.mycompany.shequ.service.impl)如图所示

14.前置通知实现类MethodBefore的内容如下

package com.mycompany.shequ.service.impl;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

/**
 * 方法执行前通知
 * @author Administrator
 *
 */
public class MethodBefore implements MethodBeforeAdvice {

	public void before(Method arg0, Object[] arg1, Object arg2)
			throws Throwable {
		System.out.println("前置通知被执行");
	}

}

15.在src/main/java下创建后置通知实现类MethodAfter,包名(com.mycompany.shequ.service.impl)如图所示

16.后置通知实现类MethodAfter的内容如下

package com.mycompany.shequ.service.impl;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

/**
 * 方法执行完成后通知
 * @author Administrator
 *
 */
public class MethodAfter implements AfterReturningAdvice {

	public void afterReturning(Object arg0, Method arg1, Object[] arg2,
			Object arg3) throws Throwable {
		System.out.println("后置通知被执行");
	}

}

17.在src/main/java下创建异常通知实现类ThrowException,包名(com.mycompany.shequ.service.impl)如图所示

18.异常通知实现类ThrowException的内容如下

package com.mycompany.shequ.service.impl;

import org.springframework.aop.ThrowsAdvice;

/**
 * 抛出异常后通知
 * @author Administrator
 *
 */
public class ThrowException implements ThrowsAdvice {
	public void afterThrowing(IllegalArgumentException e) throws Throwable{
		System.out.println("异常通知被执行");
	}
}

19.在src/main/java下创建环绕通知实现类AroundMethod,包名(com.mycompany.shequ.service.impl)如图所示

20.环绕通知实现类AroundMethod的内容如下

package com.mycompany.shequ.service.impl;

import java.util.Arrays;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

/**
 * 环绕通知
 * @author Administrator
 *
 */
public class AroundMethod implements MethodInterceptor {

	public Object invoke(MethodInvocation method) throws Throwable {
		System.out.println("环绕通知被执行");
		System.out.println("方法名称:"+method.getMethod().getName());
		System.out.println("方法参数:"+Arrays.toString(method.getArguments()));
		Object result = method.proceed();
		return result;
	}

}

21.在src/main/resource下创建核心的配置文件applicationContext.xml,如图所示

22.配置文件applicationContext.xml,如图所示

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/util
	http://www.springframework.org/schema/util/spring-util-4.0.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-4.0.xsd">
	
	<!-- customer dao Bean -->
	<bean id="customerDao" class="com.mycompany.shequ.dao.impl.CustomerDaoImpl"></bean>
	
	<!-- customer 业务层 Bean -->
	<bean id="customerService" class="com.mycompany.shequ.service.impl.CustomerServiceImpl">
		<property name="customerDao" ref="customerDao"></property>
	</bean>
	
	<!-- 方法执行前通知 -->
	<bean id="methodBeforeBean" class="com.mycompany.shequ.service.impl.MethodBefore"></bean>
	
	<!-- 方法执行完成后通知 -->
	<bean id="methodAfterBean" class="com.mycompany.shequ.service.impl.MethodAfter"></bean>
	
	<!-- 抛出异常后通知 -->
	<bean id="throwExceptionBean" class="com.mycompany.shequ.service.impl.ThrowException"></bean>
	
	<!-- 环绕通知 -->
	<bean id="aroundMethodBean" class="com.mycompany.shequ.service.impl.AroundMethod"></bean>
	
	<bean id="customerServiceProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="target" ref="customerService"></property>
		<property name="interceptorNames">
			<list>
				<!-- methodBeforeBean是前置通知Bean的名称 -->
				<value>methodBeforeBean</value>
				
				<!-- methodAfterBean是后置通知Bean的名称 -->
				<value>methodAfterBean</value>
				
				<!-- throwExceptionBean是异常通知Bean的名称 -->
				<value>throwExceptionBean</value>
				
				<!-- aroundMethodBean是环绕通知Bean的名称 -->
				<value>aroundMethodBean</value>
			</list>
		</property>
	</bean>

</beans>

23.在src/test/java下创建测试文件AppTest,包名(com.mycompany.shequ.test)如图所示

24.测试文件AppTest的内容如下

package com.mycompany.shequ.test;

import org.junit.Test;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.mycompany.shequ.service.ICustomerService;

public class AppTest {
	
	@Test
	public void beanTest(){
	    ConfigurableApplicationContext context = new 
	    ClassPathXmlApplicationContext("applicationContext.xml");
		ICustomerService customerService = (ICustomerService) 
		context.getBean("customerServiceProxy");
		customerService.showMe();
	}
}

25.在测试类AppTest的beanTest方法上右键运行,输出结果如图所示