springBoot打印请求信息日志，如请求头，请求体，请求路径等

迈不过友情╰ 2023-06-11 04:22 68阅读 0赞

# 背景 #

和前端联调，前端总是说接口对了呀。  
后端说，没有进我的方法呀。  
后端加日志拦截所以请求。

# 过程 #

## [springmvc代码][springmvc] ##

## 包装类中报错getReader() has already been called for this request ##

![在这里插入图片描述][20191029110408984.png]

*  代码里面有这个包装类呀。
 *  这说明springBoot有自带的过滤器，同时也会调用这个方法。
 *  把优先级设置为最高。

## 依旧报getReader() has already been called for this request ##

*  这次是在`chain.doFilter(requestWrapper, response);`里面报错
 *  估计有人用了原生的ServletRequest 了。
 *  加入

@Override
        public ServletRequest getRequest() {
            return this;
        }

## `java.lang.StackOverflowError: null at org.springframework.web.util.WebUtils.getNativeRequest(WebUtils.java:463) ~[spring-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]` ##

*  死循环，果然spring

## 后端报500，控制台日志不输出。 ##

## 把日志过滤去掉用getRequest()方法。 ##

# 代码 #

import cn.hutool.log.Log;
    import cn.hutool.log.LogFactory;
    import com.alibaba.fastjson.JSONObject;
    import org.springframework.boot.web.servlet.FilterRegistrationBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import javax.servlet.*;
    import javax.servlet.http.HttpServletRequest;
    import java.io.IOException;
    import java.util.*;
    
    /**
     * Copyright (C), 2019-2019, 北京力盟亚有限公司
     * @Description: 过滤器
     * @Author: qianxi  
     * @Date: 2019/10/28 17:47
     * @version:1.0
     */
    //@WebFilter(value="/*",filterName = "aaaaaLoggingFilter" )
    @Configuration
    public class LoggingFilterConfig implements Filter {
        @Bean
        public FilterRegistrationBean registrationBean(){
            FilterRegistrationBean filter = new FilterRegistrationBean(new LoggingFilterConfig());
            filter.addUrlPatterns("/*");
            //多个过滤器时执行顺序
            // 最高级别。
            filter.setOrder(FilterRegistrationBean.HIGHEST_PRECEDENCE);
            return filter;
        }
    
        private final static Log log = LogFactory.get();
    
        @Override
        public void init(FilterConfig filterConfig) throws ServletException {
    
        }
    
        @Override
        public void doFilter(ServletRequest request, ServletResponse response,
                             FilterChain chain) throws IOException, ServletException {
            // TODO Auto-generated method stub
            HttpServletRequest req = (HttpServletRequest)request;
            Map<String, Object> map = new HashMap<String, Object>();
    
            // Get request URL.
            map.put("URL", req.getRequestURL());
            map.put("Method", req.getMethod());
            map.put("Protocol",req.getProtocol());
            // 获取header信息
    
            List<Map<String,String>> headerList = new ArrayList<>();
            Map<String,String> headerMaps = new HashMap<String,String>();
            for(Enumeration<String> enu = req.getHeaderNames(); enu.hasMoreElements();){
                String name = enu.nextElement();
                headerMaps.put(name,req.getHeader(name));
            }
            headerList.add(headerMaps);
            map.put("headers", headerList);
            //获取parameters信息
    
            List<Map<String,String>> parameterList = new ArrayList<>();
            Map<String,String> parameterMaps = new HashMap<String,String>();
            for(Enumeration<String> names = req.getParameterNames();names.hasMoreElements();){
                String name = names.nextElement();
                parameterMaps.put(name, req.getParameter(name));
            }
            parameterList.add(parameterMaps);
            map.put("parameters", parameterList);
            String line = "";
            // 获取请求体信息
    //            if (req.getMethod().equalsIgnoreCase("POST")) {
    //                int len = req.getContentLength();
    //                char[] buf = new char[len];
    //                int bufcount = requestWrapper.getReader().read(buf);
    //                if (len > 0 && bufcount <= len) {
    //                    line = String.copyValueOf(buf).substring(0, bufcount);
    //                }
    //            } else if (req.getMethod().equalsIgnoreCase("GET")) {
            int idx = req.getRequestURL().indexOf("?");
            if (idx != -1) {
                line = req.getRequestURL().substring(idx + 1);
            } else {
                line = null;
            }
    //            }
    
            if (line != null) {
                map.put("Context", new String[] { line });
            }
            log.info("接收请求报文：\n"+ JSONObject.toJSONString(map));
            chain.doFilter(request, response);
            // 辞书
            log.info("接收response报文：\n"+ response.getContentType());
        }
    
        @Override
        public void destroy() {
    
        }
    
    }

# 参考资料 #

*  [getReader() has already been called for this request][getReader_ has already been called for this request]
 *  [springMVC打印请求信息日志，如请求头，请求体，请求路径等][springmvc]
 *  springboot中配置过滤器以及可能出现的问题

[springmvc]: https://blog.csdn.net/shidebin/article/details/82909544
[20191029110408984.png]: /images/20230531/a1ec507dfcab48b3a3f0479dfe48030f.png
[getReader_ has already been called for this request]: https://blog.csdn.net/football0/article/details/90442635