diff --git a/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/controller/JobApiController.java b/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/controller/JobApiController.java
index aa51e739..2bed1155 100644
--- a/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/controller/JobApiController.java
+++ b/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/controller/JobApiController.java
@@ -42,15 +42,15 @@ public class JobApiController {
 
         // valid
         if (!"POST".equalsIgnoreCase(request.getMethod())) {
-            return new ReturnT<String>(ReturnT.FAIL_CODE, "invalid request, HttpMethod not support.");
+            return new ReturnT<>(ReturnT.FAIL_CODE, "invalid request, HttpMethod not support.");
         }
         if (uri==null || uri.trim().length()==0) {
-            return new ReturnT<String>(ReturnT.FAIL_CODE, "invalid request, uri-mapping empty.");
+            return new ReturnT<>(ReturnT.FAIL_CODE, "invalid request, uri-mapping empty.");
         }
         if (XxlJobAdminConfig.getAdminConfig().getAccessToken()!=null
                 && XxlJobAdminConfig.getAdminConfig().getAccessToken().trim().length()>0
                 && !XxlJobAdminConfig.getAdminConfig().getAccessToken().equals(request.getHeader(XxlJobRemotingUtil.XXL_JOB_ACCESS_TOKEN))) {
-            return new ReturnT<String>(ReturnT.FAIL_CODE, "The access token is wrong.");
+            return new ReturnT<>(ReturnT.FAIL_CODE, "The access token is wrong.");
         }
 
         // services mapping
@@ -64,7 +64,7 @@ public class JobApiController {
             RegistryParam registryParam = GsonTool.fromJson(data, RegistryParam.class);
             return adminBiz.registryRemove(registryParam);
         } else {
-            return new ReturnT<String>(ReturnT.FAIL_CODE, "invalid request, uri-mapping("+ uri +") not found.");
+            return new ReturnT<>(ReturnT.FAIL_CODE, "invalid request, uri-mapping("+ uri +") not found.");
         }
 
     }