diff --git a/pom.xml b/pom.xml
index 4fa33b4..c682507 100644
--- a/pom.xml
+++ b/pom.xml
@@ -176,8 +176,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>9</source>
-                    <target>9</target>
+                    <source>8</source>
+                    <target>8</target>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/src/main/java/io/qyi/e5/config/Start.java b/src/main/java/io/qyi/e5/config/Start.java
index 44e9472..7cebfe1 100644
--- a/src/main/java/io/qyi/e5/config/Start.java
+++ b/src/main/java/io/qyi/e5/config/Start.java
@@ -79,6 +79,7 @@ public class Start {
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
+        log.info("本轮调用完成!");
     }
 
     /*任务执行*/
diff --git a/src/main/java/io/qyi/e5/service/task/impl/TaskImpl.java b/src/main/java/io/qyi/e5/service/task/impl/TaskImpl.java
index 3b3ce47..9c9d017 100644
--- a/src/main/java/io/qyi/e5/service/task/impl/TaskImpl.java
+++ b/src/main/java/io/qyi/e5/service/task/impl/TaskImpl.java
@@ -12,13 +12,9 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 
-import javax.annotation.PreDestroy;
-import java.io.IOException;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Random;
-import java.util.concurrent.Flow;
-import java.util.concurrent.SubmissionPublisher;
 
 /**
  * @program: e5