Spring AspectJ 建议未执行

Posted 2023-02-23

【中文标题】Spring AspectJ 建议未执行

【英文标题】：Spring AspectJ advice not executing

【发布时间】：2014-10-01 11:32:00

【问题描述】：

我试图在执行 Action 之前执行 Logging 建议，但该操作被调用但 Advice 没有执行。 我正在使用 JSF 2.2、Spring 3.2、AspectJ-1.6.11 请让我知道我做错了什么，因为它没有给出任何错误，只是建议没有执行。

下面是代码示例

LoggingAspect.java

package com.igate.mldb.util.aop;

import java.util.Arrays;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LoggingAspect 

    @Around("com.example.action.FirstAction.checkLogin()")
    public void logAround(ProceedingJoinPoint joinPoint) throws Throwable
    
        System.out.println("logAround() is running!");
        System.out.println("hijacked method : " + joinPoint.getSignature().getName());
        System.out.println("hijacked arguments : " + Arrays.toString(joinPoint.getArgs()));

        System.out.println("Around before is running!");
        joinPoint.proceed(); //continue on the intercepted method
        System.out.println("Around after is running!");

        System.out.println("******");
    


    @Pointcut("execution(public * *(..))")
    public void anyPublicOperation() 
        System.out.println("Inside Pointcut execution");
    

    @Before("execution(public * *(..))")
    public void logBefore(JoinPoint joinPoint) 

        System.out.println("logBefore() is running!");
        System.out.println("hijacked : " + joinPoint.getSignature().getName());
        System.out.println("******");
    

动作类 FirstAction.java

package com.example.action;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Component
@Scope("request")
public class FirstAction
    private String name;

    private String password;

    public String checkLogin() 
        System.out.println("In Action");

        if ((name.equals("mks")) && (password.equals("mks"))) 
            System.out.println("In IF");
            System.out.println("Name -->" + name + " password-->" + password);
            return "SUCCESS";
         else 
            System.out.println("In else");
            System.out.println("Name -->" + name + " password-->" + password);
            return "error";
        
    

    public String getName() 
        return name;
    

    public void setName(String name) 
        this.name = name;
    

    public String getPassword() 
        return password;
    

    public void setPassword(String password) 
        this.password = password;
    

下面是我的spring配置 ApplicationContext.xml

<aop:aspectj-autoproxy />

<context:component-scan base-package="com.example.action, com.igate.mldb" />

JSF 配置 faces-config.xml

<application>
    <el-resolver>
            org.springframework.web.jsf.el.SpringBeanFacesELResolver
    </el-resolver>

    <locale-config>
        <default-locale>en</default-locale>
    </locale-config>

    <resource-bundle>
        <base-name>MLDB</base-name>
        <var>mldb</var>
    </resource-bundle>
</application>

问候， Swapneel Killekar

【参考方案1】：

我对 Spring 了解不多，但我知道 AspectJ 语法，并且可以告诉您，您的 @Around 建议的切入点在方法签名中缺少返回类型。应该是这样的：

@Around("* com.example.action.FirstAction.checkLogin()")

或者，更具体地说，因为checkLogin 返回一个String：

@Around("String com.example.action.FirstAction.checkLogin()")

因此，您的环绕建议不能返回void，它也需要返回Object 或String：

@Around("String com.example.action.FirstAction.checkLogin()")
public String logAround(ProceedingJoinPoint joinPoint) throws Throwable

    System.out.println("logAround() is running!");
    System.out.println("hijacked method : " + joinPoint.getSignature().getName());
    System.out.println("hijacked arguments : " + Arrays.toString(joinPoint.getArgs()));

    System.out.println("Around before is running!");
    String result = joinPoint.proceed(); //continue on the intercepted method
    System.out.println("Around after is running!");

    System.out.println("******");
    return result;

我不知道你的 Spring 配置是否正确，我只能帮助 AspectJ 部分，抱歉。

【讨论】：

是的，我想通了...无论如何感谢您的回答。