package com.example.aopdemo.aop; 
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.CodeSignature;
import org.springframework.stereotype.Component;
 
import java.util.HashMap;
import java.util.Map;
 
/**
 * DemoAop
 * Create by Gray(Ganguocai@outlook.com)
 */
@Aspect
@Component
@Slf4j
public class DemoAop {
 
    /**
     * 環(huán)繞通知
     * @param proceedingJoinPoint
     * @return
     * @throws Throwable
     */
    @Around(value = "execution(* com.example.aopdemo..*(..)))")
    public Object demoAop(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        
        log.debug("執(zhí)行前：");
        
        Map<String, Object> params = getNameAndValue(proceedingJoinPoint);
        for (Map.Entry<String, Object> entry : params.entrySet()) {
            System.out.println("name: " + entry.getKey() + " value: " + entry.getValue());
        }
        
        Object object = proceedingJoinPoint.proceed();  //執(zhí)行連接點(diǎn)方法，object：方法返回值
        
        log.debug("執(zhí)行后：");
        
        return object;
    }
    /**
     * 獲取參數(shù)Map集合
     * @param joinPoint
     * @return
     */
    Map<String, Object> getNameAndValue(ProceedingJoinPoint joinPoint) {
        Map<String, Object> param = new HashMap<>();
        Object[] paramValues = joinPoint.getArgs();
        String[] paramNames = ((CodeSignature)joinPoint.getSignature()).getParameterNames();
        for (int i = 0; i < paramNames.length; i++) {
            param.put(paramNames[i], paramValues[i]);
        }
        return param;
    }
}

public static void main(String[] args) {
    // 這里JSONObject是fastjson-1.2.41.jar包下的
    JSONObject jsonObject = JSON.parseObject("{\"timeStamp\":21602756894612,\"status\":0,\"results\":{\"userName\":\"yang20102\",\"userLevel\":\"3\"},\"errorCode\":null,\"errorMessage\":null}");
    // 獲取json最外層字符串
    Object timeStamp = jsonObject.get("timeStamp");
    System.out.println("timeStamp:" + timeStamp);
 
    // 獲取復(fù)雜對(duì)象
    Object results = jsonObject.get("results");
    JSONObject jsonObjectResults = JSON.parseObject(results.toString());
    Object userName = jsonObjectResults.get("userName");
    System.out.println("userName:" + userName);
}

{
  "timeStamp": 21602756894612,
  "status": 0,
  "results": {
    "userName": "yang20102",
    "userLevel": "3"
  },
  "errorCode": null,
  "errorMessage": null
}