SpringBoot AOP @AfterReturning

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
</dependencies>
pom.xml
<?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-returning-advice-example</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>aop-after-returning-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 
{
    //在 HashMap 中存储帐户细节
    private static Map<String,Account> map = null;
    static
    {
        map = new HashMap<>();
        //在map中添加帐户详细信息
        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;
//正在创建一个接口，如果找不到客户id则引发异常
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.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
import com.nhooo.model.Account;
@Aspect
@Component
public class AccountAspect 
{
//implementing after returning advice   
@AfterReturning(value="execution(* com.nhooo.service.impl.AccountServiceImpl.*(..))",returning="account")
public void afterReturningAdvice(JoinPoint joinPoint, Account account)
{
System.out.println("After Returing method:"+joinPoint.getSignature());
System.out.println(account);
}
}

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
//@EnableSpectProxy注解支持处理用@Aspect注解标记的组件。它类似于xml配置中的标记。
@EnableAspectJAutoProxy(proxyTargetClass=true)
public class AopAfterReturningAdviceExampleApplication
{
    public static void main(String[] args)  
    {
    ConfigurableApplicationContext ac = SpringApplication.run(AopAfterReturningAdviceExampleApplication.class, args);
    //从应用程序上下文获取account对象
    AccountService accountService = ac.getBean("accountServiceImpl", AccountServiceImpl.class);
    Account account;
    try 
    {
        account = accountService.getAccountByCustomerId("K2434567");
        if(account != null)
            System.out.println(account.getAccountNumber()+"\t"+account.getAccountType());
        } 
        catch (Exception e) 
        {
            System.out.println(e.getMessage());
        }
    }
}