springboot日志配置，自动化记录异常信息和用AOP记录请求信息到日志

1、日志yml配置（利用springboot自带的日志slf4j，无需额外引用jar包）

logging:
  path: photostock/logs/
  level:
    root: info    #root表示所有目录，info级别

2、日志使用方法演示

@RestController
@RequestMapping("/stock")
public class StockController {

    private Logger logger = LoggerFactory.getLogger(StockController.class);

    @GetMapping("/test")
    public Object test() throws Exception{
        logger.info("测试异常");
        int i = 1/0;
        return "stock";
    }
   
}

3、日志自动化记录异常

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.HashMap;
import java.util.Map;

@ControllerAdvice("com.njwd.photostock.controller")
public class GlobalExceptionHandler {
    private Logger logger = LoggerFactory.getLogger(getClass());

    @ExceptionHandler(RuntimeException.class)
    @ResponseBody
    public Map errorMsg(HttpServletRequest request,Exception ex){
        logger.error("错误链接"+request.getRequestURL().toString());

        //将异常信息写入stream流，然后存入log
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ex.printStackTrace(new PrintStream(baos));
        logger.info(baos.toString());
        Map errorMsgResult=new HashMap<>();
        errorMsgResult.put("code", 500);
        errorMsgResult.put("msg", "文件错误请联系管理员");
        return errorMsgResult;
    }
}

4、通过AOP记录请求信息到日志文件

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.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;

@Aspect
@Component
public class WebLogAspect {
    private Logger logger = LoggerFactory.getLogger(getClass());

    @Pointcut("execution(public * com.njwd.photostock.controller.*.*(..))")
    private void weblog(){}

    @Before("weblog()")
    private void doBefore(JoinPoint joinPoint) throws Throwable {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        logger.info("URL: "+request.getRequestURL().toString());
        logger.info("HTTP_METHOD: "+request.getMethod());
        logger.info("IP: "+request.getRemoteAddr());
        Enumeration enu = request.getParameterNames();
        while (enu.hasMoreElements()) {
            String name = enu.nextElement();
            logger.info("name:{},value:{}", name, request.getParameter(name));
        }
    }

    @AfterReturning(returning = "ret", pointcut = "weblog()")
    public void doAfterReturning(Object ret) throws Throwable {
        logger.info("RESPONSE: " + ret);
    }
}