SpringBoot AOP @AfterThrowing

@AfterThrowing(PointCut="execution(expression) ", throwing="name")

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
</dependencies>

<?xml version="1.0" encoding="UTF-8"?>
<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>com.nhooo</groupId>
<artifactId>aop-after-throwing-advice-example</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>aop-after-throwing-advice-example</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

package com.nhooo.model;
public class Account 
{
private String accountNumber;
private String accountType;
public Account(String accountNumber, String accountType) 
{
super();
this.accountNumber = accountNumber;
this.accountType = accountType;
}
public String getAccountType() 
{
return accountType;
}
public String getAccountNumber() 
{
return accountNumber;
}
@Override
public String toString()
{
return "Account [accountNumber=" + accountNumber+ ", accountType=" + accountType + "]";
}
}

package com.nhooo.service.impl;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.springframework.stereotype.Service;
import com.nhooo.model.Account;
@Service
public class AccountServiceImpl implements AccountService 
{
//storing account detail in the HashMap
private static Map<String,Account> map = null;
static
{
map = new HashMap<>();
//adding account detail in the map
map.put("M4546779", new Account("10441117000", "Saving Account"));
map.put("K2434567", new Account("10863554577", "Current Account"));
}
@Override
public Account getAccountByCustomerId(String customerId) throws Exception
{
if(customerId ==null)
{
throw new Exception("Invalid! Customer Id");
}
Account account= null;
Set<Entry<String, Account>> entrySet = map.entrySet();
for (Entry<String, Account> entry : entrySet) 
{
if(entry.getKey().equals(customerId))
{
account= entry.getValue();
}
}
return account;
}
}

package com.nhooo.service.impl;
import com.nhooo.model.Account;
//creating interface that throws exception if the customer id not found 
public interface AccountService 
{
public abstract Account getAccountByCustomerId(String customerId)
throws Exception;
}

package com.nhooo.aspect;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
@Aspect
@Component
public class AccountAspect 
{
//implementing after throwing advice    
@AfterThrowing(value="execution(* com.nhooo.service.impl.AccountServiceImpl.*(..))",throwing="ex")
public void afterThrowingAdvice(JoinPoint joinPoint, Exception ex)
{
System.out.println("After Throwing exception in method:"+joinPoint.getSignature());
System.out.println("Exception is:"+ex.getMessage());
}   
}

package com.nhooo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import com.nhooo.model.Account;
import com.nhooo.service.impl.AccountService;
import com.nhooo.service.impl.AccountServiceImpl;
@SpringBootApplication
//@EnableAspectJAutoProxy注解支持處理用@Aspect注解標記的組件。它類似于xml配置中的標記。
@EnableAspectJAutoProxy(proxyTargetClass=true)
public class AopAfterThrowingAdviceExampleApplication
{
    public static void main(String[] args)  
    {
        ConfigurableApplicationContext ac = SpringApplication.run(AopAfterThrowingAdviceExampleApplication.class, args);
        //從應(yīng)用程序上下文獲取account對象
        AccountService accountService = ac.getBean("accountServiceImpl", AccountServiceImpl.class);
        Account account;
        try 
        {
        //生成異常
        account = accountService.getAccountByCustomerId(null);
        if(account != null)
            System.out.println(account.getAccountNumber()+"\t"+account.getAccountType());
        } 
        catch (Exception e) 
        {
            System.out.println(e.getMessage());
            e.printStackTrace();
        }
    }
}