diff --git a/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm b/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
index c73bd7c..98d8358 100644
--- a/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
+++ b/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
@@ -1,6 +1,15 @@
 package ${basePackage}.module.${table.moduleName}.service.${table.businessName};
 
 import cn.hutool.core.collection.CollUtil;
+#set ($hasSubJoinMany = false)
+#foreach ($subTable in $subTables)
+#if ( $subTable.subJoinMany )
+#set ($hasSubJoinMany = true)
+#end
+#end
+#if ( $subTables && $subTables.size() > 0 && $table.templateType != 11 && $hasSubJoinMany )
+import cn.hutool.core.util.ObjectUtil;
+#end
 import org.springframework.stereotype.Service;
 import ${jakartaPackage}.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_antd_general_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_antd_schema_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_ele_general_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vben5_ele_schema_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vue2_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vue2_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vue2_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vue2_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vue2_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vue2_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vue2_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vue2_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vue3_master_inner/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vue3_master_inner/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vue3_master_inner/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vue3_master_inner/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
diff --git a/yudao-module-infra/src/test/resources/codegen/vue3_master_normal/java/InfraStudentServiceImpl b/yudao-module-infra/src/test/resources/codegen/vue3_master_normal/java/InfraStudentServiceImpl
index 2b485a4..31d689e 100644
--- a/yudao-module-infra/src/test/resources/codegen/vue3_master_normal/java/InfraStudentServiceImpl
+++ b/yudao-module-infra/src/test/resources/codegen/vue3_master_normal/java/InfraStudentServiceImpl
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.infra.service.demo;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
 import org.springframework.stereotype.Service;
 import jakarta.annotation.Resource;
 import org.springframework.validation.annotation.Validated;