Spring练习

jar包准备

异常&＃xff1a;

• 代码结构如图所示
  • PersonServlet
  • PersonService
  • PersonDao

• 用异常通知捕获servlet的所有的方法抛出的异常&＃xff1a;

  • 目标对象所在的类 com.peng.web.PersonServlet
  • 抛出异常所在的方法 save()
  • 抛出异常的名称 XxxException
  • 异常信息 message

• 意义&＃xff1a;

  • 异常处理类和业务逻辑类完全松耦合。
  • 时刻捕获生产生产环境中所有的错误&＃xff0c;实时监控该系统&＃xff0c;异常收集。

• 代码

  • com.peng.aspect

    • MyAspect

      package com.peng.aspect;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;/*** 切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class MyAspect {//// /**// * 给web层加入切面// */// 创建一个切入点表达式的引用&＃64;Pointcut("within(com.peng.web.*)")public void pc() {}// 前置事务&＃64;Before(value &＃61; "pc()")public void beforeSomething(JoinPoint jp) {System.out.println("前置事务");}//// 环绕事务&＃64;Around(value &＃61; "pc()")public Object aroundSomething(ProceedingJoinPoint pjp) throws Throwable {System.out.println("环绕事务---------aa----------------");Object obj &＃61; pjp.proceed();System.out.println("环绕事务----------ww--------------");return obj;}//// 后置事务&＃64;AfterReturning(value &＃61; "pc()")public void afterSomething(JoinPoint jp) {System.out.println("后置事务");}// 异常事务&＃64;AfterThrowing(value &＃61; "pc()", throwing &＃61; "t")public void exceptionSomething(JoinPoint jp, Throwable t) {System.out.println("异常事务");System.err.println("异常类&＃xff1a;" &＃43; t.getClass());System.err.println("异常信息&＃xff1a;" &＃43; t.getMessage());System.out.println("异常事务");}// 最终事务&＃64;After(value &＃61; "pc()")public void finallySomething(JoinPoint jp) {System.out.println("最终事务");}}


  • com.peng.dao

    • PersonDao

      package com.peng.dao;import org.springframework.stereotype.Repository;import com.peng.pojo.Person;&＃64;Repository(value &＃61; "personDao")
public class PersonDao {public void savePerson(Person person) {System.out.println("存储了对象" &＃43; person);}}


  • com.peng.pojo

    • Person

      package com.peng.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;&＃64;Component(value &＃61; "person")
public class Person {&＃64;Value(value &＃61; "张三")private String name;&＃64;Value(value &＃61; "12")private int age;&＃64;Overridepublic String toString() {return "姓名&＃xff1a;" &＃43; name &＃43; "&＃xff0c;年龄&＃xff1a;" &＃43; age;}
}


  • com.peng.service

    • PersonService

      package com.peng.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import com.peng.dao.PersonDao;
import com.peng.pojo.Person;&＃64;Service(value &＃61; "personService")
public class PersonService {&＃64;Autowired&＃64;Qualifier(value &＃61; "personDao")private PersonDao personDao;public void savePerson(Person person) {personDao.savePerson(person);}}


  • com.peng.test

    • Test

      package com.peng.test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.peng.pojo.Person;
import com.peng.web.PersonServlet;/*** 测试通用类* * &＃64;author Administrator* */
public class Test {&＃64;org.junit.Testpublic void personModelTest() {// 获取Spring容器ClassPathXmlApplicationContext cpxac &＃61; new ClassPathXmlApplicationContext("applicationContext.xml");// 获取Person对象Person person &＃61; (Person) cpxac.getBean("person");// 获取PersonServlet对象PersonServlet personServlet &＃61; (PersonServlet) cpxac.getBean("personServlet");// 执行PersonServlet的savePerson方法personServlet.savePerson(person);}
}


  • com.peng.web

    • PersonServlet

      package com.peng.web;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;import com.peng.pojo.Person;
import com.peng.service.PersonService;&＃64;Controller(value &＃61; "personServlet")
public class PersonServlet {&＃64;Autowired&＃64;Qualifier("personService")private PersonService personService;public void savePerson(Person person) {int bug &＃61; 1 / 0;System.out.println(bug);personService.savePerson(person);}}


  • 配置文件

    • applicationContext

      




方法执行的时间

• 计算servlet的各个类的各个方法的执行时间
  1. 类的名称
  2. 方法的名称
  3. 执行的时间

• 控制台输出

• 意义&＃xff1a;用来监控程序的性能问题

• 代码

  • com.peng.aspect

    • MyAspect

      package com.peng.aspect;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;/*** 切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class MyAspect {//// /**// * 给web层加入切面// */// 创建一个切入点表达式的引用&＃64;Pointcut("within(com.peng.web.*)")public void pc() {}// 前置事务&＃64;Before(value &＃61; "pc()")public void beforeSomething(JoinPoint jp) {System.out.println("前置事务");}//// 环绕事务&＃64;Around(value &＃61; "pc()")public Object aroundSomething(ProceedingJoinPoint pjp) throws Throwable {long startTime &＃61; System.currentTimeMillis();System.out.println("环绕事务---------aa--------当前时间&＃xff08;毫秒值&＃xff09;&＃xff1a;" &＃43; startTime);Object obj &＃61; pjp.proceed();long endTime &＃61; System.currentTimeMillis();System.out.println("环绕事务----------ww------当前时间&＃xff08;毫秒值&＃xff09;&＃xff1a;" &＃43; endTime);System.out.println("方法的执行时间&＃xff1a;" &＃43; (endTime - startTime));return obj;}//// 后置事务&＃64;AfterReturning(value &＃61; "pc()")public void afterSomething(JoinPoint jp) {System.out.println("后置事务");}// 异常事务&＃64;AfterThrowing(value &＃61; "pc()", throwing &＃61; "t")public void exceptionSomething(JoinPoint jp, Throwable t) {System.out.println("异常事务");System.err.println("异常类&＃xff1a;" &＃43; t.getClass());System.err.println("异常信息&＃xff1a;" &＃43; t.getMessage());System.out.println("异常事务");}// 最终事务&＃64;After(value &＃61; "pc()")public void finallySomething(JoinPoint jp) {System.out.println("最终事务");}}


  • com.peng.dao

    • PersonDao

      package com.peng.dao;import org.springframework.stereotype.Repository;import com.peng.pojo.Person;&＃64;Repository(value &＃61; "personDao")
public class PersonDao {public void savePerson(Person person) {System.out.println("存储了对象" &＃43; person);}}


  • com.peng.pojo

    • Person

      package com.peng.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;&＃64;Component(value &＃61; "person")
public class Person {&＃64;Value(value &＃61; "张三")private String name;&＃64;Value(value &＃61; "12")private int age;&＃64;Overridepublic String toString() {return "姓名&＃xff1a;" &＃43; name &＃43; "&＃xff0c;年龄&＃xff1a;" &＃43; age;}
}


  • com.peng.service

    • PersonService

      package com.peng.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import com.peng.dao.PersonDao;
import com.peng.pojo.Person;&＃64;Service(value &＃61; "personService")
public class PersonService {&＃64;Autowired&＃64;Qualifier(value &＃61; "personDao")private PersonDao personDao;public void savePerson(Person person) {personDao.savePerson(person);}}


  • com.peng.test

    • Test

      package com.peng.test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.peng.pojo.Person;
import com.peng.web.PersonServlet;/*** 测试通用类* * &＃64;author Administrator* */
public class Test {&＃64;org.junit.Testpublic void personModelTest() {// 获取Spring容器ClassPathXmlApplicationContext cpxac &＃61; new ClassPathXmlApplicationContext("applicationContext.xml");// 获取Person对象Person person &＃61; (Person) cpxac.getBean("person");// 获取PersonServlet对象PersonServlet personServlet &＃61; (PersonServlet) cpxac.getBean("personServlet");// 执行PersonServlet的savePerson方法personServlet.savePerson(person);}
}


  • com.peng.web

    • PersonServlet

      package com.peng.web;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;import com.peng.pojo.Person;
import com.peng.service.PersonService;&＃64;Controller(value &＃61; "personServlet")
public class PersonServlet {&＃64;Autowired&＃64;Qualifier("personService")private PersonService personService;public void savePerson(Person person) {personService.savePerson(person);}}


  • 配置文件

    • applicationContext

      




事务

• 当方法上有事务的注解&＃xff0c;该方法就有事务。写一个切面来完成

• 代码

  • com.peng.annocation

    • Transaction

      package com.peng.annotation;import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;&＃64;Target(ElementType.METHOD)
&＃64;Retention(RetentionPolicy.RUNTIME)
public &＃64;interface Transaction {}


  • com.peng.aspect

    • MyAspect

      package com.peng.aspect;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;import com.peng.annotation.Transaction;/*** 切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class MyAspect {//// /**// * 给web层加入切面// */// 创建一个切入点表达式的引用&＃64;Pointcut("within(com.peng.web.*)")public void pc() {}// 前置事务&＃64;Before(value &＃61; "pc()")public void beforeSomething(JoinPoint jp) {System.out.println("前置事务");}//// 环绕事务&＃64;Around(value &＃61; "pc() && &＃64;annotation(ann)")public Object aroundSomething(ProceedingJoinPoint pjp, Transaction ann)throws Throwable {System.out.println("环绕事务---------aa----------------");System.out.println("事务Start");Object obj &＃61; pjp.proceed();System.out.println("事务End");System.out.println("环绕事务----------ww--------------");return obj;}//// 后置事务&＃64;AfterReturning(value &＃61; "pc()")public void afterSomething(JoinPoint jp) {System.out.println("后置事务");}// 异常事务&＃64;AfterThrowing(value &＃61; "pc()", throwing &＃61; "t")public void exceptionSomething(JoinPoint jp, Throwable t) {System.out.println("异常事务");System.err.println("异常类&＃xff1a;" &＃43; t.getClass());System.err.println("异常信息&＃xff1a;" &＃43; t.getMessage());System.out.println("异常事务");}// 最终事务&＃64;After(value &＃61; "pc()")public void finallySomething(JoinPoint jp) {System.out.println("最终事务");}}


  • com.peng.dao

    • PersonDao

      package com.peng.dao;import org.springframework.stereotype.Repository;import com.peng.pojo.Person;&＃64;Repository(value &＃61; "personDao")
public class PersonDao {public void savePerson(Person person) {System.out.println("存储了对象" &＃43; person);}}


  • com.peng.pojo

    • Person

      package com.peng.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;&＃64;Component(value &＃61; "person")
public class Person {&＃64;Value(value &＃61; "张三")private String name;&＃64;Value(value &＃61; "12")private int age;&＃64;Overridepublic String toString() {return "姓名&＃xff1a;" &＃43; name &＃43; "&＃xff0c;年龄&＃xff1a;" &＃43; age;}
}


  • com.peng.service

    • PersonService

      package com.peng.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import com.peng.dao.PersonDao;
import com.peng.pojo.Person;&＃64;Service(value &＃61; "personService")
public class PersonService {&＃64;Autowired&＃64;Qualifier(value &＃61; "personDao")private PersonDao personDao;public void savePerson(Person person) {personDao.savePerson(person);}}


  • com.peng.test

    • Test

      package com.peng.test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.peng.pojo.Person;
import com.peng.web.PersonServlet;/*** 测试通用类* * &＃64;author Administrator* */
public class Test {&＃64;org.junit.Testpublic void personModelTest() {// 获取Spring容器ClassPathXmlApplicationContext cpxac &＃61; new ClassPathXmlApplicationContext("applicationContext.xml");// 获取Person对象Person person &＃61; (Person) cpxac.getBean("person");// 获取PersonServlet对象PersonServlet personServlet &＃61; (PersonServlet) cpxac.getBean("personServlet");// 执行PersonServlet的savePerson方法(实验组)personServlet.savePerson(person);System.out.println("&＃61;8&＃61;8&＃61;&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;&＃61;8&＃61;8&＃61;8&＃61;8&＃61;8&＃61;&＃61;88&＃61;8&＃61;8&＃61;");// 执行PersonServlet的delPerson方法(参照组)personServlet.delPerson();}
}


  • com.peng.web

    • PersonServlet

      package com.peng.web;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;import com.peng.annotation.Transaction;
import com.peng.pojo.Person;
import com.peng.service.PersonService;&＃64;Controller(value &＃61; "personServlet")
public class PersonServlet {&＃64;Autowired&＃64;Qualifier("personService")private PersonService personService;&＃64;Transactionpublic void savePerson(Person person) {personService.savePerson(person);}public void delPerson() {System.out.println("del person ~~");}}


  • 配置文件

    • applicationContext

      




权限控制

• 代码

  • com.peng.annotation

    • Right

      package com.peng.annotation;import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;/*** 权限控制* * &＃64;author Administrator* */
&＃64;Target(ElementType.METHOD)
&＃64;Retention(RetentionPolicy.RUNTIME)
public &＃64;interface Right {String right() default "游客";
}


  • com.peng.aspect

    • MyAspect

      package com.peng.aspect;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;import com.peng.annotation.Right;/*** 切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class MyAspect {//// /**// * 给web层加入切面// */// 创建一个切入点表达式的引用&＃64;Pointcut("within(com.peng.web.*)")public void pc() {}// 前置事务&＃64;Before(value &＃61; "pc()")public void beforeSomething(JoinPoint jp) {System.out.println("前置事务");}//// 环绕事务&＃64;Around(value &＃61; "pc() && &＃64;annotation(right)")public Object aroundSomething(ProceedingJoinPoint pjp, Right right)throws Throwable {System.out.println("环绕事务---------aa----------------");System.out.println("当前用户权限&＃xff1a;" &＃43; right.right());if (!"管理员".equals(right.right())) {System.out.println("e,你不是管理员,不能进行该操作");return null;}Object obj &＃61; pjp.proceed();System.out.println("环绕事务----------ww--------------");return obj;}//// 后置事务&＃64;AfterReturning(value &＃61; "pc()")public void afterSomething(JoinPoint jp) {System.out.println("后置事务");}// 异常事务&＃64;AfterThrowing(value &＃61; "pc()", throwing &＃61; "t")public void exceptionSomething(JoinPoint jp, Throwable t) {System.out.println("异常事务");System.err.println("异常类&＃xff1a;" &＃43; t.getClass());System.err.println("异常信息&＃xff1a;" &＃43; t.getMessage());System.out.println("异常事务");}// 最终事务&＃64;After(value &＃61; "pc()")public void finallySomething(JoinPoint jp) {System.out.println("最终事务");}}


  • com.peng.dao

    • PersonDao

      package com.peng.dao;import org.springframework.stereotype.Repository;import com.peng.pojo.Person;&＃64;Repository(value &＃61; "personDao")
public class PersonDao {public void savePerson(Person person) {System.out.println("存储了对象" &＃43; person);}}


  • com.peng.pojo

    • Person

      package com.peng.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;&＃64;Component(value &＃61; "person")
public class Person {&＃64;Value(value &＃61; "张三")private String name;&＃64;Value(value &＃61; "12")private int age;&＃64;Overridepublic String toString() {return "姓名&＃xff1a;" &＃43; name &＃43; "&＃xff0c;年龄&＃xff1a;" &＃43; age;}
}


  • com.peng.service

    • PersonService

      package com.peng.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import com.peng.dao.PersonDao;
import com.peng.pojo.Person;&＃64;Service(value &＃61; "personService")
public class PersonService {&＃64;Autowired&＃64;Qualifier(value &＃61; "personDao")private PersonDao personDao;public void savePerson(Person person) {personDao.savePerson(person);}}


  • com.peng.test

    • Test

      package com.peng.test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.peng.pojo.Person;
import com.peng.web.PersonServlet;/*** 测试通用类* * &＃64;author Administrator* */
public class Test {&＃64;org.junit.Testpublic void personModelTest() {// 获取Spring容器ClassPathXmlApplicationContext cpxac &＃61; new ClassPathXmlApplicationContext("applicationContext.xml");// 获取Person对象Person person &＃61; (Person) cpxac.getBean("person");// 获取PersonServlet对象PersonServlet personServlet &＃61; (PersonServlet) cpxac.getBean("personServlet");// 执行PersonServlet的savePerson方法personServlet.savePerson(person);}
}


  • com.peng.web

    • PersonServlet

      package com.peng.web;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;import com.peng.pojo.Person;
import com.peng.service.PersonService;&＃64;Controller(value &＃61; "personServlet")
public class PersonServlet {&＃64;Autowired&＃64;Qualifier("personService")private PersonService personService;// &＃64;Right(right &＃61; "管理员")&＃64;Rightpublic void savePerson(Person person) {personService.savePerson(person);}}


  • 配置文件

    • applicationContext

      




缓存

• 过程
  1. 需要缓存的的数据进行在内存中存放一份
  2. 再次用到时&＃xff0c;先去内存中找&＃xff0c;找到以后直接用&＃xff0c;找不到就从数据库中找&＃xff0c;并且往内存中存一份
  3. 如此反复进行12操作

• 代码

  • com.peng.annotation

    • CacheData

      package com.peng.annotation;import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;/*** 数据缓存自定义注解* * &＃64;author Administrator* */
&＃64;Target(ElementType.METHOD)
&＃64;Retention(RetentionPolicy.RUNTIME)
public &＃64;interface CacheData {String name();
}


  • com.peng.aspect

    • DataCacheAspect

      package com.peng.aspect;import java.util.HashMap;
import java.util.Map;import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;import com.peng.annotation.CacheData;
import com.sun.istack.internal.logging.Logger;/*** 数据缓存切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class DataCacheAspect {private Logger logger &＃61; Logger.getLogger(DataCacheAspect.class);private Map cache &＃61; new HashMap();// 创建一个切入点表达式的引用&＃64;Pointcut("execution(* *(..))")public void pc() {}// 环绕事务&＃64;Around(value &＃61; "pc() && &＃64;annotation(data)")public Object aroundSomething(ProceedingJoinPoint pjp, CacheData data)throws Throwable {System.out.println("&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;start&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;");logger.info("Execution of Cacheable method catched");// 产生缓存数据的key值&＃xff0c;像是这个样子caching.aspectj.Calculator.sum(Integer&＃61;1;Integer&＃61;2;)StringBuilder keyBuff &＃61; new StringBuilder();// 增加类的名字keyBuff.append(pjp.getTarget().getClass().getName());// 加上方法的名字keyBuff.append(".").append(pjp.getSignature().getName());keyBuff.append("(");// 循环出方法的参数for (final Object arg : pjp.getArgs()) {// 增加参数的类型和值keyBuff.append(arg.getClass().getSimpleName() &＃43; "&＃61;" &＃43; arg &＃43; ";");// TODO:这里的数据可以缓存哦~.~}keyBuff.append(")");String key &＃61; keyBuff.toString();System.out.println(("Key &＃61; " &＃43; key));Object result &＃61; cache.get(key);if (result &＃61;&＃61; null) {logger.info("Result not yet cached. Must be calculated...");result &＃61; pjp.proceed();logger.info("Storing calculated value &＃39;" &＃43; result &＃43; "&＃39; to cache");cache.put(key, result);} else {logger.info("Result &＃39;" &＃43; result &＃43; "&＃39; was found in cache");}System.out.println("&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;end&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;");return result;}
}


    • MyAspect

      package com.peng.aspect;import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;import com.peng.annotation.Right;/*** 切面* * &＃64;author Administrator* */
&＃64;Component
&＃64;Aspect
public class MyAspect {//// /**// * 给web层加入切面// */// 创建一个切入点表达式的引用&＃64;Pointcut("within(com.peng.web.*)")public void pc() {}// 前置事务&＃64;Before(value &＃61; "pc()")public void beforeSomething(JoinPoint jp) {System.out.println("前置事务");}//// 环绕事务&＃64;Around(value &＃61; "pc() && &＃64;annotation(right)")public Object aroundSomething(ProceedingJoinPoint pjp, Right right)throws Throwable {System.out.println("环绕事务---------aa----------------");Object obj &＃61; pjp.proceed();System.out.println("环绕事务----------ww--------------");return obj;}//// 后置事务&＃64;AfterReturning(value &＃61; "pc()")public void afterSomething(JoinPoint jp) {System.out.println("后置事务");}// 异常事务&＃64;AfterThrowing(value &＃61; "pc()", throwing &＃61; "t")public void exceptionSomething(JoinPoint jp, Throwable t) {System.out.println("异常事务");System.err.println("异常类&＃xff1a;" &＃43; t.getClass());System.err.println("异常信息&＃xff1a;" &＃43; t.getMessage());System.out.println("异常事务");}// 最终事务&＃64;After(value &＃61; "pc()")public void finallySomething(JoinPoint jp) {System.out.println("最终事务");}}


  • com.peng.dao

    • PersonDao

      package com.peng.dao;import org.springframework.stereotype.Repository;import com.peng.pojo.Person;&＃64;Repository(value &＃61; "personDao")
public class PersonDao {public void savePerson(Person person) {System.out.println("存储了对象" &＃43; person);}}


  • com.peng.pojo

    • Person

      package com.peng.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;&＃64;Component(value &＃61; "person")
public class Person {&＃64;Value(value &＃61; "张三")private String name;&＃64;Value(value &＃61; "12")private int age;&＃64;Overridepublic String toString() {return "姓名&＃xff1a;" &＃43; name &＃43; "&＃xff0c;年龄&＃xff1a;" &＃43; age;}
}


  • com.peng.service

    • PersonService

      package com.peng.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import com.peng.dao.PersonDao;
import com.peng.pojo.Person;&＃64;Service(value &＃61; "personService")
public class PersonService {&＃64;Autowired&＃64;Qualifier(value &＃61; "personDao")private PersonDao personDao;public void savePerson(Person person) {personDao.savePerson(person);}}


  • com.peng.test

    • Test

      package com.peng.test;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.peng.pojo.Person;
import com.peng.web.PersonServlet;/*** 测试通用类* * &＃64;author Administrator* */
public class Test {&＃64;org.junit.Testpublic void personModelTest() {// 获取Spring容器ClassPathXmlApplicationContext cpxac &＃61; new ClassPathXmlApplicationContext("applicationContext.xml");// 获取Person对象Person person &＃61; (Person) cpxac.getBean("person");// 获取PersonServlet对象PersonServlet personServlet &＃61; (PersonServlet) cpxac.getBean("personServlet");// 执行PersonServlet的savePerson方法personServlet.savePerson(person);}
}


  • com.peng.web

    • PersonServlet

      package com.peng.web;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;import com.peng.pojo.Person;
import com.peng.service.PersonService;&＃64;Controller(value &＃61; "personServlet")
public class PersonServlet {&＃64;Autowired&＃64;Qualifier("personService")private PersonService personService;// &＃64;Right(right &＃61; "管理员")&＃64;Rightpublic void savePerson(Person person) {personService.savePerson(person);}}


  • 配置文件

    • applicationContext