JavaSpring之Aop應用（java專案）
阿新 • • 發佈：2018-12-11
1、配置所需要的maven依賴pom.xml檔案（這裡為spring核心依賴aop依賴和日誌依賴）
2、配置檔案ApplicationContext.xml檔案的配置<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>
<aop:aspectj-autoproxy>是aop使用所需要的，對於下面的datasource和factory是關於資料庫的配置，這裡沒有新增依賴，於本例也沒有明顯的關係，所以註釋不實用。
3、編寫實體類和對應的service類<?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>
Employee類
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; } @Override public String toString() { return "Employee [id=" + id + ", name=" + name + ", salary=" + salary + "]"; } }
EmployeeService類（這裡加@Service註解表示在Spring容器中新增一個小寫字母的employeeService物件）
package com.iflytek.service;
import org.springframework.stereotype.Service;
import com.iflytek.domain.Employee;
@Service
public class EmployeeService {
public void addEmployeeSalary(Employee e,double salary){
e.setSalary(salary);
System.out.println("初始化工資");
}
public void updateEmployeeSalary(double salary){
System.out.println("更改工資");
}
public void findEmployeeSalary(double salary){
System.out.println("查詢工資");
}
}
4、編寫切入類，這裡用註解配置（@Aspect標明本類是切面類，@Pointcut宣告切點）
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
@Component
public class MyInterceptor {
@Pointcut("execution (* com.iflytek.service.EmployeeService.add*(..)) and args(param)")
// @Pointcut( "execution(* com.fishwasser.action.UserAction.*(..)) and args()" )
private void anyMethod() {} // 宣告一個切入點，anyMethod為切入點名稱
@Before("anyMethod()")
public void doAddBefore(){
System.out.println("初始化之前的工資:");
}
@After(value="anyMethod()")
public void doAddAfter(){
System.out.println("初始化之後的工資:");
}
}
5、測試類
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);
}
}
可以看到結果在單獨執行add方法的時候，分別執行的切入的before和after方法，說明aop切入成功
