JavaSpring之Aop应用（java项目）

1、配置所需要的maven依赖pom.xml文件（这里为spring核心依赖aop依赖和日志依赖）

<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>4.0.0</modelVersion><groupId>com.iflytek</groupId><artifactId>myaop</artifactId><version>0.0.1-SNAPSHOT</version><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.3.13.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.3.13.RELEASE</version><scope>runtime</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>4.3.13.RELEASE</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>1.8.10</version></dependency><dependency><groupId>aopalliance</groupId><artifactId>aopalliance</artifactId><version>1.0</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.10</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies></project>

2、配置文件ApplicationContext.xml文件的配置

<aop:aspectj-autoproxy>是aop使用所需要的，对于下面的datasource和factory是关于数据库的配置，这里没有添加依赖，于本例也没有明显的关系，所以注释不实用。

<?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:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd"><context:component-scan base-package="com.iflytek"></context:component-scan><aop:aspectj-autoproxy /> <!-- <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property><property name="url" value="jdbc:oracle:thin:@172.16.130.35:1521:orcl"></property><property name="username" value="uuid"></property><property name="password" value="uuid"></property></bean><bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"><property name="dataSource" ref="dataSource"></property><property name="packagesToScan" value="com.iflytek.domain"></property><property name="hibernateProperties">            <props>                <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>                <prop key="hibernate.hbm2ddl.auto">create</prop>                <prop key="hibernate.show_sql">true</prop>                <prop key="hibernate.format_sql">true</prop>            </props></property></bean>  --></beans>

3、编写实体类和对应的service类

Employee类

package com.iflytek.domain;public class Employee {private int id;private String name;private double salary;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;}public double getSalary() {return salary;}public void setSalary(double salary) {this.salary = salary;}@Overridepublic String toString() {return "Employee [id=" + id + ", name=" + name + ", salary=" + salary + "]";}}

EmployeeService类（这里加@Service注解表示在Spring容器中添加一个小写字母的employeeService对象）

package com.iflytek.service;import org.springframework.stereotype.Service;import com.iflytek.domain.Employee;@Servicepublic class EmployeeService {public void addEmployeeSalary(Employee e,double salary){e.setSalary(salary);System.out.println("初始化工资");}public void updateEmployeeSalary(double salary){System.out.println("更改工资");}public void findEmployeeSalary(double salary){System.out.println("查询工资");}}

4、编写切入类，这里用注解配置（@Aspect标明本类是切面类，@Pointcut声明切点）

package com.iflytek.service;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.springframework.stereotype.Component;import com.iflytek.domain.Employee;@Aspect@Componentpublic class MyInterceptor { @Pointcut("execution (* com.iflytek.service.EmployeeService.add*(..)) and args(param)")// @Pointcut( "execution(* com.fishwasser.action.UserAction.*(..)) and args()" ) private void anyMethod() {} // 声明一个切入点，anyMethod为切入点名称  @Before("anyMethod()") public void doAddBefore(){ System.out.println("初始化之前的工资:"); }  @After(value="anyMethod()") public void doAddAfter(){ System.out.println("初始化之后的工资:"); }}

5、测试类

package com.iflytek.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.iflytek.domain.Employee;import com.iflytek.service.EmployeeService;public class EmployeeTest {public static void main(String[] args) {ApplicationContext cxt = new ClassPathXmlApplicationContext("applicationContext.xml");EmployeeService employeeService = (EmployeeService) cxt.getBean("employeeService");Employee employee=new Employee();employeeService.addEmployeeSalary(employee, 3000.0);}}

可以看到结果在单独执行add方法的时候，分别执行的切入的before和after方法，说明aop切入成功