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- 完整切面代码
@Component
@Aspect
public class RequestLogAspect {
private final static Logger LOGGER = LoggerFactory.getLogger(RequestLogAspect.class);
@Pointcut(“execution(* your_package.controller…*(…))”)
public void requestServer() {
}
@Before(“requestServer()”)
public void doBefore(JoinPoint joinPoint) {
ServletRequestAttributes attributes = (ServletRequestAttributes)
RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
LOGGER.info(“=======Start”);
LOGGER.info(“IP : {}”, request.getRemoteAddr());
LOGGER.info(“URL : {}”, request.getRequestURL().toString());
LOGGER.info(“HTTP Method : {}”, request.getMethod());
LOGGER.info(“Class Method : {}.{}”, joinPoint.getSignature().getDeclaringTypeName(),
joinPoint.getSignature().getName());
}
@Around(“requestServer()”)
public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
long start = System.currentTimeMillis();
Object result = proceedingJoinPoint.proceed();
LOGGER.info(“Request Params : {}”, getRequestParams(proceedingJoinPoint));
LOGGER.info(“Result : {}”, result);
LOGGER.info(“Time Cost : {} ms”, System.currentTimeMillis() - start);
return result;
}
@After(“requestServer()”)
public void doAfter(JoinPoint joinPoint) {
LOGGER.info(“=======End”);
}
/**
* 获取入参
* @param proceedingJoinPoint
*
* @return
* */
private Map<String, Object> getRequestParams(ProceedingJoinPoint proceedingJoinPoint) {
Map<String, Object> requestParams = new HashMap<>();
//参数名
String[] paramNames =
((MethodSignature)proceedingJoinPoint.getSignature()).getParameterNames();
//参数值
Object[] paramValues = proceedingJoinPoint.getArgs();
for (int i = 0; i < paramNames.length; i++) {
Object value = paramValues[i];
//如果是文件对象
if (value instanceof MultipartFile) {
MultipartFile file = (MultipartFile) value;
value = file.getOriginalFilename(); //获取文件名
}
requestParams.put(paramNames[i], value);
}
return requestParams;
}
}
高并发下请求日志切面
==============
写完以后对自己的代码很满意，但是想着可能还有完善的地方就和朋友交流了一下。emmmm
果然还有继续优化的地方 每个信息都打印一行，在高并发请求下确实会出现请求之间打印日志串行的问题，因为测试阶段请求数量较少没有出现串行的情况，果然生产环境才是第一发展力，能够遇到更多 bug，写更健壮的代码 解决日志串行的问题只要将多行打印信息合并为一行就可以了，因此构造一个对象
- RequestInfo.java
@Data
public class RequestInfo {
private String ip;
private String url;
private String httpMethod;
private String classMethod;
private Object requestParams;
private Object result;
private Long timeCost;
}
- 环绕通知方法体
@Around(“requestServer()”)
public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
long start = System.currentTimeMillis();
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
Object result = proceedingJoinPoint.proceed();
RequestInfo requestInfo = new RequestInfo();
requestInfo.setIp(request.getRemoteAddr());
requestInfo.setUrl(request.getRequestURL().toString());
requestInfo.setHttpMethod(request.getMethod());
requestInfo.setClassMethod(String.format(“%s.%s”, proceedingJoinPoint.getSignature().getDeclaringTypeName(),
proceedingJoinPoint.getSignature().getName()));
requestInfo.setRequestParams(getRequestParamsByProceedingJoinPoint(proceedingJoinPoint));
requestInfo.setResult(result);
requestInfo.setTimeCost(System.currentTimeMillis() - start);
LOGGER.info(“Request Info : {}”, JSON.toJSONString(requestInfo));
return result;
}
将 url、http request 这些信息组装成 RequestInfo 对象，再序列化打印对象
打印序列化对象结果而不是直接打印对象是因为序列化有更直观、更清晰，同时可以借助在线解析工具对结果进行解析
是不是还不错
在解决高并发下请求串行问题的同时添加了对异常请求信息的打印，通过使用 @AfterThrowing 注解对抛出异常的方法进行处理
- RequestErrorInfo.java
@Data
public class RequestErrorInfo {
private String ip;
private String url;
private String httpMethod;
private String classMethod;
private Object requestParams;
private RuntimeException exception;
}
- 异常通知环绕体
@AfterThrowing(pointcut = “requestServer()”, throwing = “e”)
public void doAfterThrow(JoinPoint joinPoint, RuntimeException e) {
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
RequestErrorInfo requestErrorInfo = new RequestErrorInfo();
requestErrorInfo.setIp(request.getRemoteAddr());
requestErrorInfo.setUrl(request.getRequestURL().toString());
requestErrorInfo.setHttpMethod(request.getMethod());
requestErrorInfo.setClassMethod(String.format(“%s.%s”, joinPoint.getSignature().getDeclaringTypeName(),
joinPoint.getSignature().getName()));
requestErrorInfo.setRequestParams(getRequestParamsByJoinPoint(joinPoint));
requestErrorInfo.setException(e);
LOGGER.info(“Error Request Info : {}”, JSON.toJSONString(requestErrorInfo));
}
对于异常，耗时是没有意义的，因此不统计耗时，而是添加了异常的打印
最后放一下完整日志请求切面代码：
@Component
@Aspect
public class RequestLogAspect {
private final static Logger LOGGER = LoggerFactory.getLogger(RequestLogAspect.class);
@Pointcut(“execution(* your_package.controller…*(…))”)
public void requestServer() {
}
@Around(“requestServer()”)
public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
long start = System.currentTimeMillis();
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
Object result = proceedingJoinPoint.proceed();
RequestInfo requestInfo = new RequestInfo();
requestInfo.setIp(request.getRemoteAddr());
requestInfo.setUrl(request.getRequestURL().toString());
requestInfo.setHttpMethod(request.getMethod());
requestInfo.setClassMethod(String.format(“%s.%s”, proceedingJoinPoint.getSignature().getDeclaringTypeName(),
proceedingJoinPoint.getSignature().getName()));
requestInfo.setRequestParams(getRequestParamsByProceedingJoinPoint(proceedingJoinPoint));
requestInfo.setResult(result);
requestInfo.setTimeCost(System.currentTimeMillis() - start);
LOGGER.info(“Request Info : {}”, JSON.toJSONString(requestInfo));
return result;
}
@AfterThrowing(pointcut = “requestServer()”, throwing = “e”)
public void doAfterThrow(JoinPoint joinPoint, RuntimeException e) {
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
RequestErrorInfo requestErrorInfo = new RequestErrorInfo();
requestErrorInfo.setIp(request.getRemoteAddr());
requestErrorInfo.setUrl(request.getRequestURL().toString());
requestErrorInfo.setHttpMethod(request.getMethod());
requestErrorInfo.setClassMethod(String.format(“%s.%s”, joinPoint.getSignature().getDeclaringTypeName(),
joinPoint.getSignature().getName()));
requestErrorInfo.setRequestParams(getRequestParamsByJoinPoint(joinPoint));
requestErrorInfo.setException(e);
LOGGER.info(“Error Request Info : {}”, JSON.toJSONString(requestErrorInfo));
}
/**
* 获取入参
* @param proceedingJoinPoint
*
* @return
* */
private Map<String, Object> getRequestParamsByProceedingJoinPoint(ProceedingJoinPoint proceedingJoinPoint) {
//参数名
String[] paramNames = ((MethodSignature)proceedingJoinPoint.getSignature()).getParameterNames();
//参数值
Object[] paramValues = proceedingJoinPoint.getArgs();
return buildRequestParam(paramNames, paramValues);
}
private Map<String, Object> getRequestParamsByJoinPoint(JoinPoint joinPoint) {
//参数名
String[] paramNames = ((MethodSignature)joinPoint.getSignature()).getParameterNames();
//参数值
Object[] paramValues = joinPoint.getArgs();
return buildRequestParam(paramNames, paramValues);
}
private Map<String, Object> buildRequestParam(String[] paramNames, Object[] paramValues) {
Map<String, Object> requestParams = new HashMap<>();
for (int i = 0; i < paramNames.length; i++) {
Object value = paramValues[i];
//如果是文件对象
if (value instanceof MultipartFile) {
MultipartFile file = (MultipartFile) value;
value = file.getOriginalFilename(); //获取文件名
}
requestParams.put(paramNames[i], value);
}
return requestParams;
}
@Data
public class RequestInfo {
private String ip;
private String url;
private String httpMethod;
private String classMethod;
private Object requestParams;
private Object result;
private Long timeCost;
}
@Data
public class RequestErrorInfo {
private String ip;
private String url;
private String httpMethod;
private String classMethod;
private Object requestParams;
private RuntimeException exception;
}
}
最后
按照上面的过程，4个月的时间刚刚好。当然Java的体系是很庞大的，还有很多更高级的技能需要掌握，但不要着急，这些完全可以放到以后工作中边用别学。
学习编程就是一个由混沌到有序的过程，所以你在学习过程中，如果一时碰到理解不了的知识点，大可不必沮丧，更不要气馁，这都是正常的不能再正常的事情了，不过是“人同此心，心同此理”的暂时而已。
“道路是曲折的，前途是光明的！”
ivate Long timeCost;
}
@Data
public class RequestErrorInfo {
private String ip;
private String url;
private String httpMethod;
private String classMethod;
private Object requestParams;
private RuntimeException exception;
}
}
最后
按照上面的过程，4个月的时间刚刚好。当然Java的体系是很庞大的，还有很多更高级的技能需要掌握，但不要着急，这些完全可以放到以后工作中边用别学。
学习编程就是一个由混沌到有序的过程，所以你在学习过程中，如果一时碰到理解不了的知识点，大可不必沮丧，更不要气馁，这都是正常的不能再正常的事情了，不过是“人同此心，心同此理”的暂时而已。
“道路是曲折的，前途是光明的！”
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[外链图片转存中…(img-hT5k4vCb-1720126725522)]
