SpringBoot正确打日志的姿势

前篇

Spring Boot 日志处理你还在用Logback？

本文简介

前篇侧重 Log4j2 的配置，本篇侧重统一日志处理的应用，以下包含 HTTP 请求的日志处理、Exception 异常日志处理。

HTTP 请求日志

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1、明确日志记录的内容

示例：用户、IP地址、Method、URI、请求参数、请求体

2、全局拦截 MDCFilter.java

package com.anoyi.config.server;

import lombok.extern.log4j.Log4j2;

import org.slf4j.MDC;

import org.springframework.http.HttpMethod;

import org.springframework.stereotype.Component;

import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;

import javax.servlet.ReadListener;

import javax.servlet.ServletException;

import javax.servlet.ServletInputStream;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletRequestWrapper;

import javax.servlet.http.HttpServletResponse;

import java.io.*;

/**

 * 拦截请求信息，添加到日志

 */

@Component

@Log4j2

public class MDCFilter extends OncePerRequestFilter {

    @Override

    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {

        try {

            MDC.put("user", request.getRemoteUser());

            String query = request.getQueryString() != null ? "?" + request.getQueryString() : "";

            if (request.getMethod().equals(HttpMethod.POST.name())) {

                MultiReadHttpServletRequest multiReadHttpServletRequest = new MultiReadHttpServletRequest(request);

                log.info("IP:{}, Method:{}, URI:{} Body:{}", request.getRemoteAddr(), request.getMethod(), request.getRequestURI() + query, multiReadHttpServletRequest.getRequestBody());

                chain.doFilter(multiReadHttpServletRequest, response);

            } else {

                log.info("IP:{}, Method:{}, URI:{}", request.getRemoteAddr(), request.getMethod(), request.getRequestURI() + query);

                chain.doFilter(request, response);

            }

        } finally {

            MDC.clear();

        }

    }

    /**

     * HttpServletRequest 请求体多读

     */

    class MultiReadHttpServletRequest extends HttpServletRequestWrapper {

        // 缓存 RequestBody

        private String requestBody;

        MultiReadHttpServletRequest(HttpServletRequest request) {

            super(request);

            requestBody = "";

            try {

                StringBuilder stringBuilder = new StringBuilder();

                InputStream inputStream = request.getInputStream();

                byte[] bs = new byte[1024];

                int len;

                while ((len = inputStream.read(bs)) != -1) {

                    stringBuilder.append(new String(bs, 0, len));

                }

                requestBody = stringBuilder.toString();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

        @Override

        public ServletInputStream getInputStream() throws IOException {

            final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(requestBody.getBytes());

            return new ServletInputStream() {

                public int read() throws IOException {

                    return byteArrayInputStream.read();

                }

                @Override

                public boolean isFinished() {

                    return byteArrayInputStream.available() == 0;

                }

                @Override

                public boolean isReady() {

                    return true;

                }

                @Override

                public void setReadListener(ReadListener readListener) {

                }

            };

        }

        @Override

        public BufferedReader getReader() throws IOException {

            return new BufferedReader(new InputStreamReader(this.getInputStream()));

        }

        String getRequestBody() {

            return requestBody.replaceAll("\n", "");

        }

    }

}

3、配置日志 Pattern

logging:

  pattern:

    console: "%d{yyyy-MM-dd HH:mm:ss.SSS} %5p [%15.15t] %-40.40c{1.} [%X{user}] : %m%n%xwEx"

说明： MDC.put("user", request.getRemoteUser()); => %X{user}

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本文由博客一文多发平台 OpenWrite 发布！

巴特西

SpringBoot正确打日志的姿势

前篇

本文简介

HTTP 请求日志

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