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spring-07-AOP环境搭建

2019-02-03 18:44:39【个人日记】717人已围观

简介AOP编程,可以用在权限管理等等

AOP环境搭建

先配置pom.xml文件

增加aspectj的jar包

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.huangxin</groupId>
  7.     <artifactId>spring04-AOP</artifactId>
  8.     <version>1.0-SNAPSHOT</version>
  10.     <dependencies>
  11.         <!--spring框架导入-->
  12.         <dependency>
  13.             <groupId>org.springframework</groupId>
  14.             <artifactId>spring-context</artifactId>
  15.             <version>4.3.17.RELEASE</version>
  16.         </dependency>
  17.         <!--spring-test-->
  18.         <dependency>
  19.             <groupId>org.springframework</groupId>
  20.             <artifactId>spring-test</artifactId>
  21.             <version>4.3.17.RELEASE</version>
  22.             <scope>test</scope>
  23.         </dependency>
  24.         <!--单元测试-->
  25.         <dependency>
  26.             <groupId>junit</groupId>
  27.             <artifactId>junit</artifactId>
  28.             <version>4.12</version>
  29.             <scope>test</scope>
  30.         </dependency>
  31.         <!--AspectJ  AOP环境-->
  32.         <dependency>
  33.             <groupId>org.springframework</groupId>
  34.             <artifactId>spring-aspects</artifactId>
  35.             <version>4.3.17.RELEASE</version>
  36.         </dependency>
  37.     </dependencies>
  38. </project>

创建一个对象
user.java

  1. package com.spring.model;
  3. public class User {
  5.     private int id;
  6.     private String userName;
  7.     private String userTelephone;
  8.     private String userSex;
  10.     public int getId() {
  11.         return id;
  12.     }
  14.     public void setId(int id) {
  15.         this.id = id;
  16.     }
  18.     public String getUserName() {
  19.         return userName;
  20.     }
  22.     public void setUserName(String userName) {
  23.         this.userName = userName;
  24.     }
  26.     public String getUserTelephone() {
  27.         return userTelephone;
  28.     }
  30.     public void setUserTelephone(String userTelephone) {
  31.         this.userTelephone = userTelephone;
  32.     }
  34.     public String getUserSex() {
  35.         return userSex;
  36.     }
  38.     public void setUserSex(String userSex) {
  39.         this.userSex = userSex;
  40.     }
  41. }

再创建一个对该对象的处理的方法

  1. package com.spring.service;
  3. import com.spring.model.User;
  5. /**
  6.  * 目标类
  7.  */
  8. public class UserService {
  11.     public void add(User user) {
  12. //        int a=1/0;
  13.         System.out.println("添加用户");
  14.     }
  16.     public void update(User user) {
  17.         System.out.println("更新用户");
  18.     }
  20.     public void deleteById(Integer id) {
  21.         System.out.println("删除用户");
  22.     }
  23. }

再次添加一个对该方法增强的方法

  1. package com.spring.aspect;
  3. import org.aopalliance.intercept.Joinpoint;
  5. public class TransactionAdvice {
  6.     /**
  7.      * 前置通知
  8.      */
  10.     public void brfore() {
  11.         System.out.println("开启事务");
  12.     }
  14.     /**
  15.      * 后置通知
  16.      */
  18.     public void afterReturning() {
  19.         System.out.println("提交事务");
  20.     }
  22.     /**
  23.      * 最终停止
  24.      */
  26.     public void after() {
  27.         System.out.println("释放资源");
  28.     }
  30.     /**
  31.      * 异常通知
  32.      */
  33.     public void afterThrowing(Throwable e) {
  34.         System.out.println("回滚事务" + e.getMessage());
  35.     }
  36. }

重点

对spring-config.xml配置

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <beans xmlns="http://www.springframework.org/schema/beans"
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
  4.        xsi:schemaLocation="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">
  7.     <!--目标-->
  8.     <bean id="UserService" class="com.spring.service.UserService"></bean>
  9.     <!--增强类-->
  10.     <bean id="TransationAdvice" class="com.spring.aspect.TransactionAdvice"></bean>
  11.     <!--切面,生成动态代理,将增强注入-->
  12.     <aop:config>
  13.         <!--引入增强-->
  14.         <aop:aspect ref="TransationAdvice">
  15.             <!--切入点-->
  16.             <!--execution表达式仔细看-->
  17.             <aop:pointcut id="transationPointCut"
  18.                           expression="execution(* com.spring.service.UserService.*(*))"></aop:pointcut>
  19.             <!--前置通知-->
  20.             <aop:before method="brfore" pointcut-ref="transationPointCut"></aop:before>
  21.             <!--后置通知 如果发生错误将不再执行-->
  22.             <aop:after-returning method="afterReturning" pointcut-ref="transationPointCut"></aop:after-returning>
  23.             <!--最终通知,始终被执行-->
  24.             <aop:after method="after" pointcut-ref="transationPointCut"></aop:after>
  25.             <!--出错通知,只有出错才会执行-->
  26.             <aop:after-throwing method="afterThrowing" pointcut-ref="transationPointCut"
  27.                                 throwing="e"></aop:after-throwing>
  28.         </aop:aspect>
  29.     </aop:config>
  30. </beans>

在下个笔记介绍

junit测试

  1. package com.spring.service;
  3. import com.spring.model.User;
  4. import org.junit.Test;
  5. import org.springframework.context.ApplicationContext;
  6. import org.springframework.context.support.ClassPathXmlApplicationContext;
  8. import static org.junit.Assert.*;
  10. public class UserServiceTest {
  12.     @Test
  13.     public void add() {
  15.         ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring-config.xml");
  16.         UserService bean = applicationContext.getBean(UserService.class);
  17.         bean.add(new User());
  18. //        bean.update(new User());
  19.         bean.deleteById(2);
  20.     }
  21. }

控制台输出

  1. D:\Java\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 -javaagent:D:\IntelliJ\lib\idea_rt.jar=59134:D:\IntelliJ\bin -Dfile.encoding=UTF-8 -classpath D:\IntelliJ\lib\idea_rt.jar;D:\IntelliJ\plugins\junit\lib\junit-rt.jar;D:\IntelliJ\plugins\junit\lib\junit5-rt.jar;D:\ideaProjects\spring04AOP\target\test-classes;D:\ideaProjects\spring04AOP\target\classes;D:\maven-repository\org\springframework\spring-context\4.3.17.RELEASE\spring-context-4.3.17.RELEASE.jar;D:\maven-repository\org\springframework\spring-aop\4.3.17.RELEASE\spring-aop-4.3.17.RELEASE.jar;D:\maven-repository\org\springframework\spring-beans\4.3.17.RELEASE\spring-beans-4.3.17.RELEASE.jar;D:\maven-repository\org\springframework\spring-core\4.3.17.RELEASE\spring-core-4.3.17.RELEASE.jar;D:\maven-repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;D:\maven-repository\org\springframework\spring-expression\4.3.17.RELEASE\spring-expression-4.3.17.RELEASE.jar;D:\maven-repository\org\springframework\spring-test\4.3.17.RELEASE\spring-test-4.3.17.RELEASE.jar;D:\maven-repository\junit\junit\4.12\junit-4.12.jar;D:\maven-repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;D:\maven-repository\org\springframework\spring-aspects\4.3.17.RELEASE\spring-aspects-4.3.17.RELEASE.jar;D:\maven-repository\org\aspectj\aspectjweaver\1.8.9\aspectjweaver-1.8.9.jar com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.spring.service.UserServiceTest,add
  2. 1月 10, 2019 3:56:51 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
  3. 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@482cd91f: startup date [Thu Jan 10 15:56:51 CST 2019]; root of context hierarchy
  4. 1月 10, 2019 3:56:51 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
  5. 信息: Loading XML bean definitions from class path resource [spring-config.xml]
  6. WARNING: An illegal reflective access operation has occurred
  7. WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (file:/D:/maven-repository/org/springframework/spring-core/4.3.17.RELEASE/spring-core-4.3.17.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
  8. WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
  9. WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
  10. WARNING: All illegal access operations will be denied in a future release
  12. 开启事务
  13. 添加产品
  14. 提交事务
  15. 释放资源
  16. 开启事务
  17. 删除产品
  18. 提交事务
  19. 释放资源
  21. Process finished with exit code 0

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