SpringCloud微服务之OpenFeign添加traceId全链路监控 _SpringCloud

注册中心请参考：
https://blog.csdn.net/MadLifeBin/article/details/120332483
可搭建单机版用于 Demo 测试
服务提供与消费请参考：
https://blog.csdn.net/MadLifeBin/article/details/120420139
全链路监控添加日志支持maven添加依赖版本参考父POM
<dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId></dependency><dependency><groupId>org.slf4j</groupId><artifactId>log4j-over-slf4j</artifactId></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId></dependency>服务双方添加日志配置文件

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服务双方增加过滤器为每个请求创建traceId启动类增加注解@ServletComponentScan

@Order(1)@WebFilter(urlPatterns = "/*",filterName = "traceIdFilter")public class TraceIdFilter implements Filter {public final static String MDC_TRACE_ID = "traceId";@Overridepublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {HttpServletRequest httpRequest = (HttpServletRequest) request;String traceId = httpRequest.getHeader(MDC_TRACE_ID);if (StringUtils.isBlank(traceId)) {traceId = IdUtil.fastSimpleUUID();;}MDC.put(MDC_TRACE_ID, traceId);ThreadLocalUtils.setTraceId(traceId);HttpServletResponse httpResponse = (HttpServletResponse) response;httpResponse.setHeader(MDC_TRACE_ID, traceId);chain.doFilter(request, response);}}

同时将traceId写回到response的header中，方便在前端获取traceId.
consumer配置OpenFeign透传traceId

@Componentpublic class OpenFeignRequestInterceptor implements RequestInterceptor {@Overridepublic void Apply(RequestTemplate requestTemplate) {String traceId = MDC.get(TraceIdFilter.MDC_TRACE_ID);requestTemplate.header(TraceIdFilter.MDC_TRACE_ID, traceId);}}

测试服务双方的调用链路上增加打印日志语句LOGGER.info("userId:{}",userId);consumer