Spring 一二事（10） - annotation AOP

先贴出POM的内容，这个毕竟是用的maven来简单构建的

<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>org.springframework.samples</groupId>
<artifactId>maven-spring002-aop</artifactId>
<version>0.0.1-SNAPSHOT</version>

<properties>

<!-- Generic properties -->
<java.version>1.7</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<!-- Spring -->
<spring-framework.version>3.2.3.RELEASE</spring-framework.version>

<!-- Logging -->
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.7</slf4j.version>

<!-- Test -->
<junit.version>4.11</junit.version>

<!-- aspectj -->
<!--         <aspectj.version>1.8.7</aspectj.version> -->
<aspectj.version>1.6.6</aspectj.version>

</properties>

<dependencies>
<!-- Spring and Transactions -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring-framework.version}</version>
</dependency>

<!-- Logging with SLF4J & LogBack -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
</dependency>

<!-- Test Artifacts -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-framework.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>

</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>

</project>

关于AOP的配置，我个人还是喜欢用XML来配置，一来方便管理，看的清楚，一个项目的aop也不会太多，二来注解形式的不好管理

applicationContext.xml的话只要有2行就行

　  <context:component-scan base-package="com.lee.spring003.aop.annotation"></context:component-scan>

<!-- 自动创建代理 -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

ITeacherDAO.java

package com.lee.spring003.aop.annotation;

public interface ITeacherDAO {
public String saveTeacher();
}

TeacherDAOImpl.java

package com.lee.spring003.aop.annotation;

import org.springframework.stereotype.Repository;

@Repository("teacherDAO")
public class TeacherDAOImpl implements ITeacherDAO {

@Override
public String saveTeacher() {
System.out.println("TeacherDAOImpl - saveTeacher()");
return "save successfully";
}

}

Transaction.java

package com.lee.spring003.aop.annotation;

import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Component("transaction")
@Aspect
public class Transaction {

@Pointcut("execution(* com.lee.spring003.aop.annotation.TeacherDAOImpl.*(..))")
public void beginTransactionPointCut() {    // 方法签名
};

@Before("beginTransactionPointCut()")
public void beginTransaction() {
System.out.println("Begin transaction...");
}

@AfterReturning("beginTransactionPointCut()")
public void commit() {
System.out.println("Transaction commit...");
}

}

github地址：https://github.com/leechenxiang/maven-spring002-aop