Spring中的Aop方法增强注解
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Spring中的Aop方法增强注解
Pom.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>Spring</artifactId>
<groupId>com.msb</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Demo1</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.22</version>
</dependency>
<!--spring切面包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.3.5</version>
</dependency>
<!--aop联盟包-->
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!--Apache Commons日志包-->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
</project>
aspect切面文件
package com.msb.aspect;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
@Aspect
@Component
public class aspect {
//定义公工切点，加入方法
/*这里是一个公共的切入点*/
@Pointcut("execution(* com.msb.aspect.service.impl.UserServiceImpl.add*(..))")//aspect下的所以类名所有方法
public void addPointCut(){
}
/*前置通知，在方法执行前执行*/
@Before("addPointCut()")
public void methodBefore(JoinPoint joinPoint){
System.out.println("@Before前置通知");
}
/*后置通知，在方法执行前执行*/
@After("addPointCut()")
public void methodAfter(JoinPoint joinPoint){
System.out.println("@After后置通知");
}
@Around("addPointCut()")
public Object methodround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
System.out.println("Around方法前执行@Around(\"addPointCut()\")");
Object proceed = proceedingJoinPoint.proceed();
System.out.println("Around方法后执行@Around(\"addPointCut()\")");
return proceed;
}
@AfterThrowing(value = "addPointCut()",throwing = "ex")
public void methodAfterThrowing(Exception ex){
System.out.println("AfterThrowing异常通知");
}
@AfterReturning(value = "addPointCut()",returning = "res")
public void methodAfterReturning (JoinPoint joinPoint, Object res){
System.out.println("A
fterReturning无异常产生方法加强·通知");
}
}
多个接口
package com.msb.aspect.dao;
import org.springframework.stereotype.Controller;
public interface EmpDap {
int addEmp(Integer empno,String ename,String job);
}
package com.msb.aspect.dao;
import org.springframework.stereotype.Controller;
public interface UserDao {
int addUser(Integer userid,String username);
}
package com.msb.aspect.service;
public interface EmpService {
int addUser(Integer userid,String username);
}
package com.msb.aspect.service;
public interface UserService {
int addEmp(Integer empno,String ename,String job);
}
接口对应的实现类
package com.msb.aspect.dao.impl;
import com.msb.aspect.dao.EmpDap;
import org.springframework.stereotype.Repository;
@Repository//这个注解是为了加载EmpDapimpl的相关属性和方法
public class EmpDapimpl implements EmpDap {
@Override
public int addEmp(Integer empno, String ename, String job) {
System.out.println("EmpDapimpl实现EmpDap调用方法addEmp");
return 1;
}
}
package com.msb.aspect.dao.impl;
import com.msb.aspect.dao.UserDao;
import org.springframework.stereotype.Repository;
@Repository
public class UserDaoImpl implements UserDao {
@Override
public int addUser(Integer userid, String username) {
System.out.println("UserDaoImpl实现UserDao调用方法addUser");
return 1;
}
}
package com.msb.aspect.service.impl;
import com.msb.aspect.dao.EmpDap;
import com.msb.aspect.dao.UserDao;
import com.msb.aspect.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
//service层用@Service注解
@Service
public class EmpServiceImpl implements EmpService {
@Autowired
private UserDao userDao;//这里Autowired会自动寻找userDao相关的对象属性和方法
@Override
public int addUser(Integer userid, String username) {
System.out.println("EmpServiceImpl实现EmpService调用方法addUser");
int rows = userDao.addUser(userid, username);
return rows;
}
}
package com.msb.aspect.service.impl;
import com.msb.aspect.dao.EmpDap;
import com.msb.aspect.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.sql.SQLOutput;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private EmpDap empDap;
@Override
public int addEmp(Integer empno, String ename, String job) {
System.out.println("UserServiceImpl实现UserService调用方法addEmp");
int rows = empDap.addEmp(empno, ename, job);
return rows;
}
}
标签：Spring,org,Aop,msb,aspect,注解,import,com,public 来源： https://www.cnblogs.com/188221creat/p/16381541.html