java Spring引导和Slf4j 2 Http请求元数据日志拦截器？

Question

我想配置我的日志记录设置，以便使用id（即UUID）标记传入请求，该id用于跟踪整个应用程序中的请求和进程（即控制器类、服务类等）以及请求中的其他相关信息（即主机名、ipaddress…）

参考slf4j 2文档，我看到提到了ThreadContext。对于向我的spring boot应用程序发出的每个请求，我都希望执行类似的操作：

ThreadContext.put("id", UUID.randomUUID().toString());
ThreadContext.put("ipAddress", this.request.getRemoteAddr());
...

并在我的调试器的PatternLayout中调用这些键，如下所示：%X{key}。理想情况下，这将产生与以下类似的结果：

[INFO] request #UUID1 #IP1: start.
[INFO] request #UUID1 #IP1: do something controller class 
[INFO] request #UUID2 #IP2: start.
[INFO] request #UUID1 #IP1: do something service class
[INFO] request #UUID2 #IP2: do something controller class 
[INFO] request #UUID2 #IP2: do something service class 
[INFO] request #UUID1 #IP1: end.
[INFO] request #UUID2 #IP2: end.

尽管我不确定如何开始实际实施。如有任何见解，将不胜感激

Answer 1

Spring Cloud Sleuth将为您完成所有这些。。只需将其包含在类路径中，并将您关心的属性添加到日志输出中。它还自动向控制器和客户端发送指令，以传递标题属性

Answer 2

通过使用实现Filter类的类，我能够通过使用以下代码以及调用Log4j 2 PatternLayout中的键来获得所需的行为：

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.ThreadContext;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestBody;

import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.TimeZone;
import java.util.UUID;

@Component
public class RequestResponseLoggingFilter implements Filter {
    private FilterConfig filterConfig;
    private static String TZ_NAME = "timezoneOffset";

    private static final Logger LOGGER = LogManager.getLogger(RequestBody.class);


@Override
public void init(FilterConfig filterConfig) throws ServletException {
    this.filterConfig = filterConfig;
}

/**
 * Sample filter that populates the MDC on every request.
 */
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
        throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest)servletRequest;
    HttpServletResponse response = (HttpServletResponse)servletResponse;

    String requestId = request.getHeader("requestId");

    if (requestId == null) {
        requestId = UUID.randomUUID().toString();
    }

    ThreadContext.put("requestId", requestId);
    ThreadContext.put("ipAddress", request.getRemoteAddr());
    HttpSession session = request.getSession(false);
    TimeZone timeZone = null;
    ThreadContext.put("hostname", servletRequest.getServerName());
    ThreadContext.put("locale", servletRequest.getLocale().getDisplayName());
    if (timeZone == null) {
        timeZone = TimeZone.getDefault();
    }
    ThreadContext.put("timezone", timeZone.getDisplayName());
    LOGGER.info(
            "Logging Request {} : {}", request.getMethod(),
            request.getRequestURI());
    filterChain.doFilter(servletRequest, servletResponse);
    LOGGER.info(
            "Logging Response {} : {}",
            response.getStatus(), response.getContentType());
    ThreadContext.clearMap();
}

@Override
public void destroy() {
}
}

Answer 3

您应该使用slf4j查看MDC（映射诊断上下文） https://ivanursul.com/slf4j-mdc

创建一个Servlet过滤器，它在MDC中设置所需的参数，这些参数将在整个请求中可用，并自动记录