现有需求

@Log(description = "{a}查询{b}的数据")

动态拼接参数保存到数据库中，就像redis缓存中key的动态拼接，@Cacheable(value="RptGroupAgent",key="'localAgentName'+#localAgentName") 。
接下来我们通过自定义注解来实现这个功能。
新增注解

import java.lang.annotation.*;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Log {

    String  methodDesc() default "";

    String  description() default "";

}

对应的AOP

import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class LogAdvice {

    @Autowired
    private static final Logger logger=LoggerFactory.getLogger(LogAdvice.class);

    @Pointcut("@annotation(注解路径)")
    public void serviceAspect() {
    }

    @After("serviceAspect()")
    public void after(JoinPoint joinPoint) throws IOException {
        logger.info("开始记录日志*************************");

        MethodSignature ms = (MethodSignature) joinPoint.getSignature();
        Method method = ms.getMethod();

        Log myAnnotation = method.getAnnotation(Log.class);

        Map paramsMap = new HashMap<>();
        String[] argNames = ((MethodSignature)joinPoint.getSignature()).getParameterNames(); // 参数名
        Object[] argObjects = joinPoint.getArgs(); // 参数
        List argNameList = Arrays.asList(argNames);
        resolveArgs(joinPoint,argNameList,argObjects,paramsMap);

        saveToDbLog(myAnnotation,paramsMap);
    }

    @AfterReturning(pointcut = "serviceAspect()",returning="returnValue")
    public void afterreturningJoinPoint(JoinPoint joinPoint ,Object returnValue){
//        System.out.println("后置通知"+joinPoint+"返回值"+returnValue);
    }

    @Around("serviceAspect()")
    public Object around(ProceedingJoinPoint pjp) throws Throwable{
        Object object = pjp.proceed();
        return object;
    }

    public static void saveToDbLog(Log myAnnotation, Map paramsMap){
        String description = myAnnotation.description();
        description = handleAnnotation(description,paramsMap);
        System.out.println(description);
　　　　 //TODO db操作
    }

    public static String handleAnnotation(String description, Map paramsMap){
        AtomicReference result = new AtomicReference<>(description);
        if(StringUtils.isBlank(description)){
            return result.get();
        }
        paramsMap.entrySet().parallelStream().forEach(p->{
            if(result.get().contains(p.getKey())){
                result.set(result.get().replaceAll(p.getKey(), p.getValue() + ""));
            }
        });
        return result.get();
    }

    public static void resolveArgs(JoinPoint joinPoint, List argNameList, Object[] argObjects,
                                   Map paramsMap){
        for(int i = 0; i < argNameList.size(); i++){
            Class<?> classo = argObjects[i].getClass();

            if(handleClassType(classo.getName())){
                paramsMap.put(argNameList.get(i),joinPoint.getArgs()[i]);
                continue;
            }
        
            JSONObject object = (JSONObject) JSONObject.toJSON(joinPoint.getArgs()[i]);

            object.keySet().parallelStream().forEach(p->{
                paramsMap.put(p,object.get(p));
            });
        }

    }
    public static   T get(Class clz,Object o){
        if(clz.isInstance(o)){
            return clz.cast(o);
        }
        return null;
    }


    public static boolean handleClassType(String name){
        AtomicBoolean result = new AtomicBoolean(false);
        String[] className = {"String","Integer","Long","int","float","double","char"};
        Arrays.asList(className).forEach(n->{
            if(name.contains(n)) {
                result.set(name.contains(n));
            }
        });
        return result.get();
    }

}