done.

brave-spring-boot-starter/src/main/java/cn/quantgroup/tech/brave/aspect/ElasticJobAspect.java

-package cn.quantgroup.tech.brave.aspect;
-
-import brave.Tracer;
-import brave.Tracing;
-import com.dangdang.ddframe.job.api.ElasticJob;
-import org.aspectj.lang.ProceedingJoinPoint;
-import org.aspectj.lang.annotation.Around;
-import org.aspectj.lang.annotation.Aspect;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
-import org.springframework.context.annotation.Configuration;
-
-import javax.annotation.Resource;
-
-@Aspect
-@Configuration
-@ConditionalOnClass(ElasticJob.class)
-@ConditionalOnProperty(prefix = "tech.brave", name = "enabled", havingValue = "true", matchIfMissing = true)
-public class ElasticJobAspect {
-
-    @Resource
-    private Tracing tracing;
-
-    @Around("target(com.dangdang.ddframe.job.api.ElasticJob)")
-    public Object dynamicTrace(ProceedingJoinPoint pjp) throws Throwable {
-        Tracer tracer = tracing.tracer();
-        /* 防止应用层非法使用（上下文中存在span），不生成root span。 */
-        if (tracer.currentSpan() == null) {
-            brave.Span span = tracer.newTrace();
-            try (Tracer.SpanInScope ws = tracer.withSpanInScope(span)) {
-                return pjp.proceed();
-                // note: try-with-resources closes the scope *before* the catch block
-            } catch (RuntimeException | Error e) {
-                span.error(e);
-                throw e;
-            } finally {
-                span.finish();
-            }
-        }
-        return pjp.proceed();
-    }
-}

brave-spring-boot-starter/src/main/java/cn/quantgroup/tech/brave/configuration/BraveAutoConfiguration.java

 package cn.quantgroup.tech.brave.configuration;
 
+import brave.Tracer;
 import brave.Tracing;
 import brave.http.HttpTracing;
 import brave.httpclient.TracingHttpClientBuilder;
@@ -14,11 +15,15 @@ import cn.quantgroup.tech.brave.properties.ServiceProperties;
 import cn.quantgroup.tech.brave.service.*;
 import cn.quantgroup.tech.brave.service.impl.*;
 import cn.quantgroup.tech.brave.slf4j.MDCCurrentTraceContext;
+import com.dangdang.ddframe.job.api.ElasticJob;
 import lombok.extern.slf4j.Slf4j;
 import okhttp3.Dispatcher;
 import okhttp3.OkHttpClient;
 import org.apache.http.client.HttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
@@ -414,6 +419,34 @@ public class BraveAutoConfiguration {
                 return new TechExecutorServiceBuilderTrace();
             }
         }
+
+        @Aspect
+        @Configuration
+        @ConditionalOnClass(ElasticJob.class)
+        @ConditionalOnProperty(prefix = "tech.brave", name = "enabled", havingValue = "true", matchIfMissing = true)
+        public class ElasticJobAspect {
+
+            @Around("target(com.dangdang.ddframe.job.api.ElasticJob)")
+            public Object dynamicTrace(ProceedingJoinPoint pjp) throws Throwable {
+                try {
+                    Tracer tracer = tracing().tracer();
+                    /* 防止应用层非法使用（上下文中存在span），不生成root span。 */
+                    if (tracer.currentSpan() == null) {
+                        brave.Span span = tracer.newTrace();
+                        try (Tracer.SpanInScope ws = tracer.withSpanInScope(span)) {
+                            // note: try-with-resources closes the scope *before* the catch block
+                        } catch (RuntimeException | Error e) {
+                            span.error(e);
+                            throw e;
+                        } finally {
+                            span.finish();
+                        }
+                    }
+                } finally {
+                    return pjp.proceed();
+                }
+            }
+        }
     }
 }