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Spring顾问，注释1

顾问

　　通知(advice)

　　　　是Spring中的一种比较简单的切面，只能将切面织入到目标类的所有方法中，而无法对指定方法进行增强

顾问(advisor)

　　　　是Spring提供的另外一种切面，可以织入到指定的方法中接口 PointcutAdvisor

　　实现类

　　　　NameMatchMethodPointcutAdvisor(基于方法名称的增强顾问)

　　　　RegexpMethodPointcutAdvice(基于正则表达式的增强顾问)

小案例NameMatchMethodPointcutAdvisor(基于方法名称的增强顾问)

　　步骤一：定义一个接口

public interface IService {
    public void doSome();
}

　　步骤二：接口实现类

public class IServiceimpl implements IService{
    @Override
    public void doSome() {
        System.out.println("真实业务doSome");
    }
}

　　步骤三：增强类

public class MyAdcisor implements MethodBeforeAdvice, AfterReturningAdvice {
    @Override
    public void afterReturning(Object o, Method method, Object[] objects, Object o1) throws Throwable {
        System.out.println("前置增强");
    }

    @Override
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("后置增强");
    }
}

　　步骤四：大配置文件

<?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: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">



    <!--顾问-->
    <!--注入业务-->
    <bean id="iServiceimpl" class="com.advice.IServiceimpl"></bean>
    <!--切面-->
    <bean id="myAdcisor" class="com.advice.MyAdcisor"></bean>
    <!--顾问包装通知-->
    <bean id="advisor" class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor">
        <property name="advice" ref="myAdcisor"></property>
　　　　 <!--这里限制值增强doSome方法-->
        <property name="mappedNames" value="doSome"></property>
    </bean>

    <!--代理工厂-->
    <bean id="proxyFactory" class="org.springframework.aop.framework.ProxyFactoryBean">
        <property name="target" ref="iServiceimpl"></property>
        <property name="interceptorNames" value="advisor"></property>
    </bean>
</beans>

　　步骤五：测试

    @Test
    public void Guwen01(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IService sss = (IService)atc.getBean("proxyFactory");
        sss.doSome();
        sss.say();
    }

小案例RegexpMethodPointcutAdvice(基于正则表达式的增强顾问)

　　步骤一：

public interface IService {
    public void doSome();
    public void say();
}

　　步骤二：

public class IServiceimpl implements IService{
    @Override
    public void doSome() {
        System.out.println("真实业务doSome");
    }

    @Override
    public void say() {
        System.out.println("真实业务say");
    }
}

　　步骤三：

public class MyAdcisor implements MethodBeforeAdvice, AfterReturningAdvice {
    @Override
    public void afterReturning(Object o, Method method, Object[] objects, Object o1) throws Throwable {
        System.out.println("前置增强");
    }

    @Override
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("后置增强");
    }
}

　　步骤四：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">



    <!--顾问正则-->
    <!--注入业务-->
    <bean id="iServiceimpl" class="com.advice.IServiceimpl"></bean>
    <!--切面-->
    <bean id="myAdcisor" class="com.advice.MyAdcisor"></bean>
    <!--顾问包装通知-->
    <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
        <property name="advice" ref="myAdcisor"></property>
　　　　　<!--这里限制值增强包含do的方法-->
        <property name="pattern" value=".*do.*"></property>
    </bean>

    <!--代理工厂-->
    <bean id="proxyFactory" class="org.springframework.aop.framework.ProxyFactoryBean">
        <property name="target" ref="iServiceimpl"></property>
        <property name="interceptorNames" value="advisor"></property>
    </bean>
</beans>

　　　步骤五：

    @Test
    public void Guwen01(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IService sss = (IService)atc.getBean("proxyFactory");
        sss.doSome();
        sss.say();
    }

默认顾问自动代理

　　步骤一：

public interface IService {
    public void doSome();
    public void say();
}

　　步骤二：

public class IServiceimpl implements IService{
    @Override
    public void doSome() {
        System.out.println("真实业务doSome");
    }

    @Override
    public void say() {
        System.out.println("真实业务say");
    }
}

　　步骤三：

public class MyAdcisor implements MethodBeforeAdvice, AfterReturningAdvice {
    @Override
    public void afterReturning(Object o, Method method, Object[] objects, Object o1) throws Throwable {
        System.out.println("前置增强");
    }

    @Override
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("后置增强");
    }
}

　　步骤四：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">



    <!--顾问默认-->
    <!--注入业务-->
    <bean id="iServiceimpl" class="com.advice.IServiceimpl"></bean>
    <!--切面-->
    <bean id="myAdcisor" class="com.advice.MyAdcisor"></bean>
    <!--顾问包装通知-->
    <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
        <property name="advice" ref="myAdcisor"></property>
        <property name="pattern" value=".*do.*"></property>
    </bean>

    <!--默认顾问自动代理生成器-->
    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"></bean>
</beans>

　　步骤五：

@Test
    public void Guwen02(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IService sss = (IService)atc.getBean("iServiceimpl");
        sss.doSome();
        sss.say();

        Beantest bean =(Beantest) atc.getBean("beantest");
        bean.testBean();

    }

顾问BeanName

　　步骤一：

public interface IService {
    public void doSome();
    public void say();
}

　　步骤二：

public class IServiceimpl implements IService{
    @Override
    public void doSome() {
        System.out.println("真实业务doSome");
    }

    @Override
    public void say() {
        System.out.println("真实业务say");
    }
}

public void testBean(){
    System.out.println("1234567890");
}

　　步骤三：

public class MyAdcisor implements MethodBeforeAdvice, AfterReturningAdvice {
    @Override
    public void afterReturning(Object o, Method method, Object[] objects, Object o1) throws Throwable {
        System.out.println("前置增强");
    }

    @Override
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("后置增强");
    }
}

　　步骤四：　　

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">


<!--注入业务-->
        <bean id="iServiceimpl" class="com.advice.IServiceimpl"></bean>
        <bean id="beantest" class="com.advice.Beantest"></bean>
        <!--切面-->
        <bean id="myAdcisor" class="com.advice.MyAdcisor"></bean>
        <!--顾问包装通知-->
        <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
            <property name="advice" ref="myAdcisor"></property>
            <property name="pattern" value=".*.*"></property>
        </bean>

        <!--BeanName自动代理生成器-->
        <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
            <!--配置BeanName-->
            <property name="beanNames" value="iServiceimpl,beantest"></property>
            <!--拦截顾问-->
            <property name="interceptorNames" value="advisor"></property>
        </bean>
</beans>

　　步骤五：

@Test
    public void Guwen02(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IService sss = (IService)atc.getBean("iServiceimpl");
        sss.doSome();
        sss.say();

        Beantest bean =(Beantest) atc.getBean("beantest");
        bean.testBean();
    }

注释（1）

　　IOC注解

　　　　@Component:实现Bean组件的定义

　　　　@Repository:用于标注DAO类，功能与@Component作用相当

　　　　@Service:用于标注业务类

　　　　@Controller:用于标注控制器

　　使用注解方式是心啊Spring AOP

　　　　@Aspect 声明切面

　　　　@Ponitcut 声明公共的切点表达式

　　　　@Before 前置增强

　　　　@AfterReturning 后置增强

　　　　@Around 环绕增强

　　　　@AfterThrowing 异常抛出增强

　　　　@After 最终增强

注释小案例：

　　步骤一：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">


    <!--扫描包中注解标注的类-->
    <context:component-scan base-package="com.advice3"></context:component-scan>

</beans>

　　步骤二：

public class User {
    private Integer uid;
    private String uname;

    public Integer getUid() {
        return uid;
    }

    public void setUid(Integer uid) {
        this.uid = uid;
    }

    public String getUname() {
        return uname;
    }

    public void setUname(String uname) {
        this.uname = uname;
    }
}

public interface IUserDao {
    public int addUser(User user);
}

@Repository　　　　//用于标注DAO类，功能与@Component作用相当
public class IUserDaoimpl implements IUserDao{
    @Override
    public int addUser(User user) {
        System.out.println("成功添加！！！");
        return 1;
    }
}

public interface IUserservice {
    public int addUser(User user);
}

@Service("iUserserviceimpl")
public class IUserserviceimpl implements IUserservice{

    @Autowired
    private IUserDao iUserDao;
    @Override
    public int addUser(User user) {
        return iUserDao.addUser(user);
    }
}

　　测试：

@Test
    public void asdfg(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IUserservice bean = (IUserservice)atc.getBean("iUserserviceimpl");
        bean.addUser(new User());
    }

注释实现前置后置增强

　　步骤一：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">


    <!--扫描包中注解标注的类-->

　　<context:component-scan base-package="com.advice3"></context:component-scan>

　　<!--启动对注解的支持--> 　　
　　<aop:aspectj-autoproxy/> 
</beans>

　　步骤二：

public interface IdoSomeService {
    public void doSome();
    public void say();
}

　　步骤三：

@Service("idoSomeServiceimpl")　　　　//用于标注DAO类，功能与@Component作用相当

public class IdoSomeServiceimpl implements IdoSomeService{
　　　　@Override 
　　　　public void doSome() { 
　　　　　　System.out.println("===========doSome==========="); 
　　　　} 
　　　　@Override 
　　　　public void say() { 
　　　　　　System.out.println("===========say==========="); } 
　　　　}

　　步骤四：

/**
 * 增强类
 */
@Component          //向Spring容器中注入bean
@Aspect             //声明切面
public class MyAdvice {
    //声明一个方法定义增强范围
    @Pointcut("execution(* *..advice3.*.*(..))")
    public void pointCat(){}



    @Before("pointCat()")       //前置增强
    public void before(){
        System.out.println("前置增强");
    }

    @AfterReturning("pointCat()")       //后置增强
    public void after(){
        System.out.println("后置增强");
    }
}

　　步骤五：

@Test
    public void asd(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IdoSomeService idoSome = (IdoSomeService)atc.getBean("idoSomeServiceimpl");
        idoSome.doSome();
        idoSome.say();
    }

注释实现环绕增强

　　步骤一：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">

　　　　<!--环绕-->
　　　　<context:component-scan base-package="com.huanrao"></context:component-scan>

 　　　 <!--启动对注解的支持--> 　　
　　　　<aop:aspectj-autoproxy/> 
</beans>

　　步骤二：

public interface IdoSomeService {
    public void doSome();
    public void say();
}

　　步骤三：

@Service("idoSomeServiceimpl")　　　　//用于标注DAO类，功能与@Component作用相当

public class IdoSomeServiceimpl implements IdoSomeService{
　　　　@Override 
　　　　public void doSome() { 
　　　　　　System.out.println("===========doSome==========="); 
　　　　} 
　　　　@Override 
　　　　public void say() { 
　　　　　　System.out.println("===========say==========="); } 
　　　　}

　　步骤四：

@Aspect     //声明切面
@Component  //向Spring容器中注入bean
public class Huanrao {
    //声明一个方法定义增强范围
    @Pointcut("execution(* *..huanrao.*.*(..))")
    public void pointCat(){}



    @Around("pointCat()")
    public void huan(ProceedingJoinPoint pj) throws Throwable {
        System.out.println("环绕前");
        pj.proceed();
        System.out.println("环绕后");
    }
}

　　步骤五：

public class huanrao {
    @Test
    public void huanrao(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IdoSomeService idoSome = (IdoSomeService)atc.getBean("idoSomeServiceimpl");
        idoSome.doSome();
        idoSome.say();
    }
}

注释实现异常增强

　　步骤一：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">




    <!--异常-->
    <context:component-scan base-package="com.yichang"></context:component-scan>

    <!--启动对注解的支持-->
    <aop:aspectj-autoproxy/>


</beans>

　　步骤二：

public interface IdoSomeService {
    public void doSome() throws Exception;
    public void say();
}

　　步骤三：（这里定义一个错误(int sum=5/0)）

@Service("idoSomeServiceimpl")
public class IdoSomeServiceimpl implements IdoSomeService {

    @Override
    public void doSome() throws Exception{
        int sum=5/0;
        System.out.println("===========doSome===========");
    }

    @Override
    public void say() {
        System.out.println("===========say===========");
    }
}

　　步骤四：

@Aspect         //切面
@Component      //向Spring中注入bean
public class yichangzeng {
    //声明一个方法定义增强范围
    @Pointcut("execution(* *..yichang.*.*(..))")
    public void pointCat(){}

    @AfterThrowing(pointcut="pointCat()",throwing="ex")
    public void afterThrowing(Exception ex){
        System.out.println("发生了异常，执行异常增强！！！");
    }
}

　　步骤五：

@Test
    public void yi(){
        ApplicationContext atc=new ClassPathXmlApplicationContext("applicationContext.xml");
        IdoSomeService idoSome = (IdoSomeService)atc.getBean("idoSomeServiceimpl");
        try {
            idoSome.doSome();
        } catch (Exception e) {
            e.printStackTrace();
        }
        idoSome.say();
    }

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原文地址：https://www.cnblogs.com/whtt/p/11771145.html