使用AOP，将日志记录，异常报告等代码从业务逻辑代码中划分出来，通过对这些行为的分离，我们希望可以将它们独立到非指导业务逻辑的方法中，进而改变这些行为的时候不影响业务逻辑的代码。 
import com.alibaba.fastjson.JSONObject;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.List;

@Component
@Aspect
public class LogManageUtil {
    private static Logger logger = LoggerFactory.getLogger(LogManageUtil.class);
    private static final String serverName = "cloudsearch";
    private static final Integer showRows = 5;

    @Pointcut("execution(* com.funny.services.web..*.*(..))")
    public void controllerLogProxy() {

    }

    @Before("controllerLogProxy()")
    public void beforeLogInfo(JoinPoint joinPoint) {
        Object[] params = joinPoint.getArgs();
        String paramStr = "";
        for (int i = 0; i < params.length; i++) {
            Object param = params[i];
            if (i == 0){
                logger.info(param.getClass().getSimpleName());
                if(param.getClass().getSimpleName().equals("SessionRepositoryRequestWrapper")) {
                    paramStr = "该接口无参数";
                }else{
                    paramStr += JSONObject.toJSONString(param);
                }
            }

            else
                paramStr += "," + JSONObject.toJSONString(param);
        }
        logger.info("service:[" + serverName + "] -- API:[" + getApiUrl() + "] 请求参数：" + paramStr);
    }

    @AfterReturning(pointcut = "controllerLogProxy()", returning = "result")
    public void afterLogInfo(Object result) {
        if (result instanceof ResultData) {
            ResultData tmpRs = (ResultData) result;
            ResultData rs = new ResultData();
            BeanUtils.copyProperties(tmpRs, rs);
            if (rs.getCode()==ResultStatus.SUCCESS_CODE) {
                if (rs.getData() instanceof List) {
                    List<Object> list = (List) rs.getData();
                    List<Object> tmpList = new ArrayList<>();
                    if (list != null && (list.size() > showRows)) {
                        for (int i = 0; i < showRows; i++) {
                            tmpList.add(list.get(i));
                        }
                        Object more = "more...";
                        tmpList.add(more);
                        rs.setData(tmpList);
                    }
                }
            }
            logger.info("service:[" + serverName + "] -- API:[" + getApiUrl() + "] 返回结果：" + JSONObject.toJSONString(rs));
        }
    }

    public static String getApiUrl() {
        RequestAttributes ra = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes sra = (ServletRequestAttributes) ra;
        HttpServletRequest request = sra.getRequest();
        String url = request.getRequestURL().toString();
        int startIndex = url.indexOf(serverName);
        String ApiUrl = url.substring(startIndex + serverName.length(), url.length());
        return ApiUrl;
    }

    public static void serviceErrorPrint(Exception e) {
        logger.error("service:[" + serverName + "] -- API:[" + getApiUrl() + "] 错误信息：" + e.getMessage());
    }


}

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