modify application.properties

src/main/java/com/update/update/service/impl/refreshServiceImpl.java

@@ -13,7 +13,9 @@ import org.springframework.stereotype.Service;
 @Service
 public class refreshServiceImpl implements refreshService {
 
-    freshServiceImpl ser=new freshServiceImpl();
+    @Autowired
+    freshServiceImpl ser;
+
     //version1大返回一个正数，小返回一个负数，相等返回0
     public static int compareVersion(String version1, String version2) throws Exception {
         if (version1 == null || version2 == null) {