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