feat: 日志增traceId，追踪接口调用链路

src/main/java/com/inspect/nvr/config/TraceIdFilter.java

@@ -0,0 +1,47 @@
+package com.inspect.nvr.config;
+
+import org.slf4j.MDC;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.UUID;
+
+/**
+ * 用于在每个请求中生成或传递traceId，方便日志追踪
+ */
+@Component
+public class TraceIdFilter extends OncePerRequestFilter {
+    private static final String TRACE_ID_HEADER = "X-Trace-Id";  // 可从 header 传入，支持链路传递
+    private static final String MDC_KEY = "traceId";
+
+    @Override
+    public void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
+                                 FilterChain filterChain) throws ServletException, IOException {
+        try {
+            // 1.优先从请求头中获取traceId
+            String traceId = request.getHeader(TRACE_ID_HEADER);
+            // 2.若请求头中没有traceId，则生成新的traceId
+            if (traceId == null || traceId.isEmpty()) {
+                traceId = generateTraceId();
+            }
+            // 3.将traceId放入MDC中
+            MDC.put(MDC_KEY, traceId);
+            // 4.可响应 header 给下游
+            response.setHeader(TRACE_ID_HEADER, traceId);
+            // 5.继续处理请求
+            filterChain.doFilter(request, response);
+        } finally {
+            // 6.处理完成，清除MDC中的traceId（避免线程复用污染）
+            MDC.clear();
+        }
+    }
+
+    private String generateTraceId() {
+        return UUID.randomUUID().toString().replace("-", "");
+    }
+}

src/main/resources/logback-spring.xml

@@ -9,7 +9,7 @@
     <!-- 控制台输出 -->
     <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
         <encoder charset="UTF-8">
-            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{80} - %msg%n</pattern>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level [%X{traceId}] %logger{80} - %msg%n</pattern>
         </encoder>
     </appender>
 

src/main/resources/logback.xml

@@ -3,7 +3,7 @@
     <!-- 日志存放路径 -->
 	<property name="log.path" value="logs/inspect-nvr" />
    <!-- 日志输出格式 -->
-	<property name="log.pattern" value="%d{HH:mm:ss.SSS} [%thread] %-5level %logger{20} - [%method,%line] - %msg%n" />
+	<property name="log.pattern" value="%d{HH:mm:ss.SSS} [%thread] %-5level [%X{traceId}] %logger{20} - [%method,%line] - %msg%n" />
 
     <property name="log.maxHistory" value="60"/>