Spring AOP AspectJ 开发

怼烎@ 2021-11-19 13:56 285阅读 0赞

## Spring AOP ---------AspectJ 开发 ##

1导的jar包和MyaspectJ包结构  
![在这里插入图片描述][20190727192139672.png]  
![在这里插入图片描述][2019072719215251.png]

## 2-log4j.properties ##

### \u914D\u7F6E\u6839 ###
    log4j.rootLogger = error,console,
    ###,\u5176\u4ED6\u914D\u7F6EfileAppender,dailyRollingFile,ROLLING_FILE,MAIL,DATABASE
    
    ### \u8BBE\u7F6E\u8F93\u51FAsql\u7684\u7EA7\u522B\uFF0C\u5176\u4E2Dlogger\u540E\u9762\u7684\u5185\u5BB9\u5168\u90E8\u4E3Ajar\u5305\u4E2D\u6240\u5305\u542B\u7684\u5305\u540D ###
    log4j.logger.org.springframework=error
    #log4j.logger.java.sql.Connection=dubug
    #log4j.logger.java.sql.Statement=dubug
    #log4j.logger.java.sql.PreparedStatement=dubug
    #log4j.logger.java.sql.ResultSet=dubug
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u63A7\u5236\u53F0 ###
    log4j.appender.console = org.apache.log4j.ConsoleAppender
    log4j.appender.console.Target = System.out
    log4j.appender.console.layout = org.apache.log4j.PatternLayout
    log4j.appender.console.layout.ConversionPattern =  %d %p [ %c] - %m %n %d
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u6587\u4EF6 ###
    log4j.appender.fileAppender = org.apache.log4j.FileAppender
    log4j.appender.fileAppender.File = logs/log.log
    log4j.appender.fileAppender.Append = true
    log4j.appender.fileAppender.Threshold = DEBUG
    log4j.appender.fileAppender.layout = org.apache.log4j.PatternLayout
    log4j.appender.fileAppender.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u6587\u4EF6\uFF0C\u5E76\u4E14\u6BCF\u5929\u90FD\u521B\u5EFA\u4E00\u4E2A\u6587\u4EF6 ###
    log4j.appender.dailyRollingFile = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.dailyRollingFile.File = logs/log.log
    log4j.appender.dailyRollingFile.Append = true
    log4j.appender.dailyRollingFile.Threshold = DEBUG
    log4j.appender.dailyRollingFile.layout = org.apache.log4j.PatternLayout
    log4j.appender.dailyRollingFile.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u6587\u4EF6\uFF0C\u4E14\u5927\u5C0F\u5230\u8FBE\u6307\u5B9A\u5C3A\u5BF8\u7684\u65F6\u5019\u4EA7\u751F\u4E00\u4E2A\u65B0\u7684\u6587\u4EF6 ###
    log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender 
    log4j.appender.ROLLING_FILE.Threshold=ERROR 
    log4j.appender.ROLLING_FILE.File=rolling.log 
    log4j.appender.ROLLING_FILE.Append=true 
    log4j.appender.ROLLING_FILE.MaxFileSize=10KB 
    log4j.appender.ROLLING_FILE.MaxBackupIndex=1 
    log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout 
    log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u90AE\u4EF6 ###
    log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
    log4j.appender.MAIL.Threshold=FATAL
    log4j.appender.MAIL.BufferSize=10
    log4j.appender.MAIL.From=chenyl@yeqiangwei.com
    log4j.appender.MAIL.SMTPHost=mail.hollycrm.com
    log4j.appender.MAIL.Subject=Log4J Message
    log4j.appender.MAIL.To=chenyl@yeqiangwei.com
    log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout
    log4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
    
    ### \u914D\u7F6E\u8F93\u51FA\u5230\u6570\u636E\u5E93 ###
    log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender
    log4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/test
    log4j.appender.DATABASE.driver=com.mysql.jdbc.Driver
    log4j.appender.DATABASE.user=root
    log4j.appender.DATABASE.password=
    log4j.appender.DATABASE.sql=INSERT INTO LOG4J (Message) VALUES ('[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n')
    log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout
    log4j.appender.DATABASE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
    log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender
    log4j.appender.A1.File=SampleMessages.log4j
    log4j.appender.A1.DatePattern=yyyyMMdd-HH'.log4j'
    log4j.appender.A1.layout=org.apache.log4j.xml.XMLLayout

## 3配置文件 AspectJapplicationContext.xml ##

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:context="http://www.springframework.org/schema/context"
           xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    
    
        <context:component-scan base-package="com.baidu"></context:component-scan>
        
        <context:annotation-config/>
    
    
       <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
    
        <bean id="deptService" class="com.baidu.AspectJ.DeptServiceImp"></bean>
        <bean id="myAspect"  class="com.baidu.AspectJ.MyAspectJ"></bean>
    
    
    
    </beans>

## 4接口DeptServiceI ##

package com.baidu.AspectJ;
    
    public interface DeptServiceI {
        void add();
        void del();
        String findName();
    }

## 5实现类class DeptServiceImp ##

package com.baidu.AspectJ;
    
    public class DeptServiceImp implements DeptServiceI{
        @Override
        public void add() {
            System.out.println("add---");
    
        }
    
        @Override
        public void del() {
            System.out.println("del---");
    
        }
    
        @Override
        public String findName() {
            System.out.println(" findName");
            //有异常时通知，无异常时不通知
            //int i=1/0;
            return "Lisi";
        }
    }

## 6测试类TestMyAspectJ ##

package com.baidu.AspectJ;
    
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class TestMyAspectJ {
    
        public static void main(String[] args) {
    
            ClassPathXmlApplicationContext applicationContext =
                    new ClassPathXmlApplicationContext("AspectJapplicationContext.xml");
    
            DeptServiceI deptServiceI = (DeptServiceI)applicationContext.getBean("deptService");//
            deptServiceI.add();
            deptServiceI.del();
            deptServiceI.findName();
    
        }
    }

## 7AspectJ开发类、 ##

package com.baidu.AspectJ;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.*;
    //纯注解开发
    @Aspect
    public class MyAspectJ {
    
       //@Before(value = "execution(* com.baidu.AspectJ.DeptServiceImp.*(..))")
        public  void  myBefore(JoinPoint joinPoint){
    
            System.out.println("前置增强"+joinPoint);
        }
       // @AfterReturning(value = "execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))",returning="reval")
    
        public  void  myAfter(JoinPoint joinPoint,Object reval){
    
            System.out.println("后置增强,返回值："+reval);
        }
    
       // @Around(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))")
    
        public Object myAround(ProceedingJoinPoint point) throws Throwable {
    
            System.out.println("环绕通知前1");
            Object returnVal=point.proceed();
            System.out.println("环绕通知后2");
            return returnVal;
    
        }
    
        //@AfterThrowing(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))",throwing = "ex")
    
        public void myAfterThrowing(JoinPoint joinPoint,Throwable ex) {
        
        //有异常时通知，无异常时不通知
            System.out.println("异常通知，异常信息是：" + ex.getMessage());
    
        }
    
    
       // @After(value ="execution(* com.baidu.AspectJ.DeptServiceImp.findName(..))")
    
        public void myAfter() {
    
            System.out.println("最终通知" );
    
        }
    
    //简化表达式
        @Before(value = "MyAspectJ.zz()")
        public  void  myBeforePointcut(JoinPoint joinPoint){
    
            System.out.println("前置增强"+joinPoint);
        }
    @Pointcut(value = "execution(* com.baidu.AspectJ.DeptServiceImp.*(..))")
        private  void  zz(){
    
        }
    }

## 8各种情况的运行结果 ##

//前置增强
    前置增强execution(void com.baidu.AspectJ.DeptServiceI.add())
    前置增强execution(void com.baidu.AspectJ.DeptServiceI.del())
    前置增强execution(String com.baidu.AspectJ.DeptServiceI.findName())
    
    Process finished with exit code 0
    
    
    //后置增强
    add---
    del---
     findName
    后置增强,返回值：Lisi
    
    Process finished with exit code 0
    
    
    //环绕通知
    add---
    del---
    环绕通知前1
     findName
    环绕通知后2
    
    
    
    //无异常通知
    add---
    del---
     findName
    
    Process finished with exit code 0
    
    //异常通知
    add---
    del---
     findName
    异常通知，异常信息是：/ by zero
    
    
    
    //简化表达式
    前置增强execution(void com.baidu.AspectJ.DeptServiceI.add())
    add---
    前置增强execution(void com.baidu.AspectJ.DeptServiceI.del())
    del---
    前置增强execution(String com.baidu.AspectJ.DeptServiceI.findName())
     findName
    
    Process finished with exit code 0

[20190727192139672.png]: /images/20211119/53296beb009f477e83a7273e8c7df517.png
[2019072719215251.png]: /images/20211119/98537983ee144b16a42c71ee4d0dec84.png