https://github.com/javaobjects/day04_springaop01
注解配置
https://github.com/javaobjects/day04_springaop01
Last synced: 7 months ago
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注解配置
- Host: GitHub
- URL: https://github.com/javaobjects/day04_springaop01
- Owner: javaobjects
- Created: 2019-10-14T06:20:52.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-10-15T01:25:18.000Z (about 6 years ago)
- Last Synced: 2025-03-22T23:27:48.307Z (9 months ago)
- Language: Java
- Size: 5.44 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# AOP注解配置
### 前置通知
#### 1.导入对应的jar包 并添加到内路径
#### 2. aop包内的Java代码准备就位
```Java
package aop;
public class DeptDaoImpl implements IDeptDao {
public DeptDaoImpl()
{
System.out.println("new DeptDaoImpl() 实例化");
}
@Override
public void selectDept() {
//System.out.println("DeptDaoImpl.selectDept()............日志记录开始");
System.out.println("DeptDaoImpl.selectDept..........软件开发事业部11111");
//System.out.println("DeptDaoImpl.selectDept()............日志记录结束");
}
@Override
public boolean insertDept(String deptname) {
//System.out.println("DeptDaoImpl.insertDept("+deptname+")............日志记录开始");
System.out.println("DeptDaoImpl.insertDept("+deptname+")");
//System.out.println("DeptDaoImpl.insertDept()............日志记录开始,返回结果：" + true);
return true;
}
}
```
```Java
package aop;
public interface IDeptDao {
public void selectDept();
public boolean insertDept(String deptname);
}
```
```Java
package aop;
public interface IUserDao {
public void selectUser();
public boolean insertUser(String username);
}
```
```Java
package aop;
public class UserDaoImpl_2 implements IUserDao {
public UserDaoImpl_2()
{
System.out.println("new UserDaoImpl_2() 实例化");
}
@Override
public void selectUser() {
//System.out.println("UserDaoImpl_2.selectUser()............日志记录开始");
System.out.println("UserDaoImpl_2.selectUser..........玉艺22222");
//System.out.println("UserDaoImpl_2.selectUser()............日志记录结束");
}
@Override
public boolean insertUser(String username) {
//System.out.println("UserDaoImpl_2.insertUser("+username+")............日志记录开始");
System.out.println("UserDaoImpl_2.insertUser("+username+")");
//System.out.println("UserDaoImpl_2.insertUser()............日志记录开始,返回结果：" + true);
return true;
}
}
```
```Java
package aop;
public class UserDaoImpl implements IUserDao {
public UserDaoImpl()
{
System.out.println("new UserDaoImpl() 实例化");
}
@Override
public void selectUser() {
//System.out.println("UserDaoImpl.selectUser()............日志记录开始");
System.out.println("UserDaoImpl.selectUser..........杰成11111");
//System.out.println("UserDaoImpl.selectUser()............日志记录结束");
}
@Override
public boolean insertUser(String username) {
//System.out.println("UserDaoImpl.insertUser("+username+")............日志记录开始");
System.out.println("UserDaoImpl.insertUser("+username+")");
//System.out.println("UserDaoImpl.insertUser()............日志记录开始,返回结果：" + true);
return true;
}
}
```
#### applicationContext.xml配置
```xml
```
#### 书写注解配置代码以及测试代码
```Java
package aop.advice;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
/**
*
*
Title: LogAdvice
*
* Description:
* 切面(ascpet) = 切入点(pointCut) + 通知(advice)
*
* 切入点(@Pointcut):修饰的方法不需要返回值，不需要参数，仅作为一个切入点的标记
*
* 通知(advice)
* 前置通知:@Before,在调用方法之前执行的代码
*
* @author xianxian
* @date 2019年10月14日
*/
@Aspect
public class LogAdvice {
@Pointcut("execution(* aop.*.select*(..)) || execution(* aop.*.insert*(..))")
public void method() {}
@Before("method()")//在调用方法之前执行代码
public void logBefore() {
System.out.println("日志记录............................前置通知【调用方法之前执行的代码】，例如:权限控制................");
}
}
```
```Java
package aop;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args){
//1.加载并且解析applicationContext.xml
//积极加载，在加载与解析xml的同时，即完成所有bean的实例化
ClassPathXmlApplicationContext factory = new ClassPathXmlApplicationContext("applicationContext.xml");
System.out.println("----------IOC容器加载完成--------------------");
//2.无代理，无日志记录
IUserDao userDao = (IUserDao) factory.getBean("userDao");
IUserDao userDao2 = (IUserDao) factory.getBean("userDao2");
IDeptDao deptDao = (IDeptDao) factory.getBean("deptDao");
userDao.selectUser();
userDao2.selectUser();
deptDao.selectDept();;
deptDao.insertDept("软件事业部");
}
}
```
#### 运行测试
### 后置通知