Spring4-AOP切面-注解方式

1.创建Maven项目,项目名称springdemo51,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://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/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>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.3</version>
</dependency>

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.3</version>
</dependency>

<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;

public class Customer {
private String name;
private String email;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
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;

import com.mycompany.shequ.bean.Customer;

public interface ICustomerDao {
public void save(Customer customer);
}

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 org.springframework.stereotype.Component;

import com.mycompany.shequ.bean.Customer;
import com.mycompany.shequ.dao.ICustomerDao;

@Component("customerDao")
public class CustomerDaoImpl implements ICustomerDao {

public void save(Customer customer) {
System.out.println("customer saved success");
}
}

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;

import com.mycompany.shequ.bean.Customer;

public interface ICustomerService {
public void save(Customer customer);
}

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 javax.annotation.Resource;

import org.springframework.stereotype.Component;

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

@Component("customerServiceImpl")
public class CustomerServiceImpl implements ICustomerService {

private ICustomerDao customerDao;

public ICustomerDao getCustomerDao() {
return customerDao;
}

@Resource(name="customerDao")
public void setCustomerDao(ICustomerDao customerDao) {
this.customerDao = customerDao;
}

public void init(){
System.out.println("init");
}

public void destroy(){
System.out.println("destroy");
}

public void save(Customer customer) {
customerDao.save(customer);
}

}

13.在src/main/java下创建aop切面类CustomerInterceptor,包名(com.mycompany.shequ.aop)如图所示

14.aop切面类CustomerInterceptor的内容如下

package com.mycompany.shequ.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;

//切面类
@Aspect
@Component
public class CustomerInterceptor {
//从com.mycompany.shequ.service.impl.CustomerServiceImpl.save方法切入
@Pointcut("execution(public * com.mycompany.shequ.service..*.save(..))")
public void myMethod(){

}

@Before("myMethod()")
public void before(){
System.out.println("method before");
}

@After("myMethod()")
public void after(){
System.out.println("method after");
}

@AfterReturning("execution(public * com.mycompany.shequ.dao..*.*(..))")
public void AfterReturning(){
System.out.println("method afterreturning");
}

@AfterThrowing("execution(public * com.mycompany.shequ.dao..*.*(..))")
public void AfterThrowing(){
System.out.println("method afterThrowing");
}
}

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

16.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"
xmlns:aop="http://www.springframework.org/schema/aop"
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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"> 
<context:annotation-config />
<context:component-scan base-package="com.mycompany.shequ"/>  <!-- 自动扫描 -->
<aop:aspectj-autoproxy/>

</beans>

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

18.测试文件AppTest的内容如下

package com.mycompany.shequ.test;

import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.mycompany.shequ.bean.Customer;
import com.mycompany.shequ.service.ICustomerService;

public class AppTest {

@Test
public void beanTest(){
ClassPathXmlApplicationContext context = new
ClassPathXmlApplicationContext("applicationContext.xml");
ICustomerService customerService = (ICustomerService)
context.getBean("customerServiceImpl");
customerService.save(new Customer());
context.destroy();
}
}

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