package com.packtpub.aop;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
/**
* 检测方法执行耗时的spring切面类
* 使用@Aspect注解的类,Spring将会把它当作一个特殊的Bean(一个切面),也就是不对这个类本身进行动态代理
*
* @date 2019-03-29
*/
@Aspect
@Component
public class MethodExecuteTimeViewer {
// service层的统计耗时切面,类型必须为final String类型的,注解里要使用的变量只能是静态常量类型的
public static final String POINT = "execution (* com.packtpub.*.*.*(..))";
private static final long TWO_MILLISECONDS = 2;
private static Log logger = LogFactory.getLog(MethodExecuteTimeViewer.class);
/**
* 统计方法执行耗时Around环绕通知
*
* @param joinPoint
* @return
*/
@Around(POINT)
//等价于@Around("execution (* com.packtpub.restapp.*.*(..))";)
public Object timeAround(ProceedingJoinPoint joinPoint) {
// 定义返回对象、得到方法需要的参数
Object obj = null;
Object[] args = joinPoint.getArgs();
long startTime = System.currentTimeMillis();
try {
obj = joinPoint.proceed(args);
} catch (Throwable e) {
logger.error("统计某方法执行耗时环绕通知出错", e);
}
// 获取执行的方法名
long endTime = System.currentTimeMillis();
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
String methodName = signature.getDeclaringTypeName() + "." + signature.getName();
// 打印耗时的信息
this.printExecTime(methodName, startTime, endTime);
return obj;
}
/**
* 打印方法执行耗时的信息,如果超过了一定的时间,才打印
*
* @param methodName
* @param startTime
* @param endTime
*/
private void printExecTime(String methodName, long startTime, long endTime) {
long diffTime = endTime - startTime;
if (diffTime > TWO_MILLISECONDS) {
logger.info("-----" + methodName + " 方法执行耗时:" + diffTime + " ms");
}
}
}
执行
curl http://localhost:8080/user/100
或打开网页 http://http?/localhost:8080/user/100
调用相关的方法,输出了相应的执行时间.
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIwczX0xiRGZkRGZ0Xy9GbvNGL2EzXlpXazxycWJjW1Z0VaxmSupVNCh0YohmMMBjVtJWd0ckW65UbM5WOHJWa5kHT20ESjBjUIF2X0hXZ0xCMx81dvRWYoNHLrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnL2MzMzIDM0ATM5IzMwkTMwIzLc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
https://github.com/HappyFreeAngel/Spring-AOP-MethodExecuteTimeViewer.git