diff --git a/src/main/java/com/interplug/qcast/batch/estimate/PlanConfrimConfiguration.java b/src/main/java/com/interplug/qcast/batch/estimate/PlanConfrimConfiguration.java
index 36afa1fb..36964244 100644
--- a/src/main/java/com/interplug/qcast/batch/estimate/PlanConfrimConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/estimate/PlanConfrimConfiguration.java
@@ -4,6 +4,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.interplug.qcast.biz.estimate.EstimateService;
 import com.interplug.qcast.biz.estimate.dto.PlanSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import org.springframework.batch.core.Job;
@@ -74,7 +75,7 @@ public class PlanConfrimConfiguration implements JobExecutionListener {
   @Bean
   public ItemWriter<PlanSyncResponse> planConfirmWriter() {
     return items -> {
-      estimateService.setPlanConfirmSyncSave((List<PlanSyncResponse>) items.getItems());
+      estimateService.setPlanConfirmSyncSave(new ArrayList<>(items.getItems()));
     };
   }
 }
diff --git a/src/main/java/com/interplug/qcast/batch/master/BomConfiguration.java b/src/main/java/com/interplug/qcast/batch/master/BomConfiguration.java
index 08320de1..c51147bc 100644
--- a/src/main/java/com/interplug/qcast/batch/master/BomConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/master/BomConfiguration.java
@@ -4,6 +4,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.interplug.qcast.biz.displayItem.DisplayItemService;
 import com.interplug.qcast.biz.displayItem.dto.BomSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import org.springframework.batch.core.Job;
@@ -74,7 +75,7 @@ public class BomConfiguration implements JobExecutionListener {
   @Bean
   public ItemWriter<BomSyncResponse> bomWriter() {
     return items -> {
-      displayItemService.setBomSyncSave((List<BomSyncResponse>) items.getItems());
+      displayItemService.setBomSyncSave(new ArrayList<>(items.getItems()));
     };
   }
 }
diff --git a/src/main/java/com/interplug/qcast/batch/master/MaterialConfiguration.java b/src/main/java/com/interplug/qcast/batch/master/MaterialConfiguration.java
index b4e5ccb1..578d8eed 100644
--- a/src/main/java/com/interplug/qcast/batch/master/MaterialConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/master/MaterialConfiguration.java
@@ -103,7 +103,7 @@ public class MaterialConfiguration implements JobExecutionListener {
   @Bean
   public ItemWriter<ItemSyncResponse> materialWriter() {
     return items -> {
-      displayItemService.setItemSyncSave((List<ItemSyncResponse>) items.getItems());
+      displayItemService.setItemSyncSave(new ArrayList<>(items.getItems()));
     };
   }
 }
diff --git a/src/main/java/com/interplug/qcast/batch/master/PriceJobConfiguration.java b/src/main/java/com/interplug/qcast/batch/master/PriceJobConfiguration.java
index 1843cb04..a57f3181 100644
--- a/src/main/java/com/interplug/qcast/batch/master/PriceJobConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/master/PriceJobConfiguration.java
@@ -4,6 +4,7 @@ import com.interplug.qcast.biz.displayItem.DisplayItemService;
 import com.interplug.qcast.biz.displayItem.dto.PriceItemSyncResponse;
 import com.interplug.qcast.biz.displayItem.dto.PriceSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
@@ -141,7 +142,7 @@ public class PriceJobConfiguration implements JobExecutionListener {
   private <T> ItemWriter<T> createWriter(Consumer<List<T>> processor, String writerName) {
     return items -> {
       try {
-        List<T> itemList = (List<T>) items.getItems();
+        List<T> itemList = new ArrayList<>(items.getItems());
         processor.accept(itemList);
         log.info("{}Writer: {} items 처리 완료", writerName, items.size());
       } catch (Exception e) {
diff --git a/src/main/java/com/interplug/qcast/batch/master/SpecialNoteDispItemJobConfiguration.java b/src/main/java/com/interplug/qcast/batch/master/SpecialNoteDispItemJobConfiguration.java
index d1448c5e..c00b4304 100644
--- a/src/main/java/com/interplug/qcast/batch/master/SpecialNoteDispItemJobConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/master/SpecialNoteDispItemJobConfiguration.java
@@ -5,6 +5,7 @@ import com.interplug.qcast.biz.specialNote.dto.SpecialNoteItemRequest;
 import com.interplug.qcast.biz.specialNote.dto.SpecialNoteRequest;
 import com.interplug.qcast.biz.specialNote.dto.SpecialNoteSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
@@ -157,7 +158,7 @@ public class SpecialNoteDispItemJobConfiguration implements JobExecutionListener
   private <T> ItemWriter<T> createWriter(Consumer<List<T>> processor, String writerName) {
     return items -> {
       try {
-        List<T> itemList = (List<T>) items.getItems();
+        List<T> itemList = new ArrayList<>(items.getItems());
         processor.accept(itemList);
         log.info("{}Writer: {} items 처리 완료", writerName, items.size());
       } catch (Exception e) {
diff --git a/src/main/java/com/interplug/qcast/batch/master/StoreJobConfiguration.java b/src/main/java/com/interplug/qcast/batch/master/StoreJobConfiguration.java
index 2155bfb1..0ceb5428 100644
--- a/src/main/java/com/interplug/qcast/batch/master/StoreJobConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/master/StoreJobConfiguration.java
@@ -10,6 +10,7 @@ import com.interplug.qcast.biz.user.dto.StoreSyncResponse;
 import com.interplug.qcast.biz.user.dto.StoreSyncResquest;
 import com.interplug.qcast.biz.user.dto.UserRequest;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
@@ -212,7 +213,7 @@ public class StoreJobConfiguration implements JobExecutionListener {
   private <T> ItemWriter<T> createWriter(Consumer<List<T>> processor, String writerName) {
     return items -> {
       try {
-        List<T> itemList = (List<T>) items.getItems();
+        List<T> itemList = new ArrayList<>(items.getItems());
         processor.accept(itemList);
         log.info("{}Writer: {} items 처리 완료", writerName, items.size());
       } catch (Exception e) {
diff --git a/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java b/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
index d071c82f..90ad18e8 100644
--- a/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
@@ -4,6 +4,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.interplug.qcast.biz.user.UserService;
 import com.interplug.qcast.biz.user.dto.AdminUserSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import org.springframework.batch.core.Job;
@@ -82,7 +83,7 @@ public class AdminUserConfiguration implements JobExecutionListener {
   @Bean
   public ItemWriter<AdminUserSyncResponse> adminUserWriter() {
     return items -> {
-      userService.setAdminUserSyncSave((List<AdminUserSyncResponse>) items.getItems());
+      userService.setAdminUserSyncSave(new ArrayList<>(items.getItems()));
     };
   }
 }
diff --git a/src/main/java/com/interplug/qcast/batch/system/BusinessChargerConfiguration.java b/src/main/java/com/interplug/qcast/batch/system/BusinessChargerConfiguration.java
index 4fc5c61a..df711080 100644
--- a/src/main/java/com/interplug/qcast/batch/system/BusinessChargerConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/system/BusinessChargerConfiguration.java
@@ -4,6 +4,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.interplug.qcast.biz.user.UserService;
 import com.interplug.qcast.biz.user.dto.BusinessChargerSyncResponse;
 import com.interplug.qcast.util.InterfaceQsp;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import org.springframework.batch.core.Job;
@@ -78,7 +79,7 @@ public class BusinessChargerConfiguration implements JobExecutionListener {
   @Bean
   public ItemWriter<BusinessChargerSyncResponse> businessChargerWriter() {
     return items -> {
-      userService.setBusinessChargerSyncSave((List<BusinessChargerSyncResponse>) items.getItems());
+      userService.setBusinessChargerSyncSave(new ArrayList<>(items.getItems()));
     };
   }
 }
diff --git a/src/main/java/com/interplug/qcast/batch/system/CommonCodeConfiguration.java b/src/main/java/com/interplug/qcast/batch/system/CommonCodeConfiguration.java
index f4d9936f..edcd5b55 100644
--- a/src/main/java/com/interplug/qcast/batch/system/CommonCodeConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/system/CommonCodeConfiguration.java
@@ -1,5 +1,6 @@
 package com.interplug.qcast.batch.system;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
@@ -126,7 +127,7 @@ public class CommonCodeConfiguration implements JobExecutionListener {
   private <T> ItemWriter<T> createWriter(Consumer<List<T>> processor, String writerName) {
     return items -> {
       try {
-        List<T> itemList = (List<T>) items.getItems();
+        List<T> itemList = new ArrayList<>(items.getItems());
         processor.accept(itemList);
         log.info("{}Writer: {} items 처리 완료", writerName, items.size());
       } catch (Exception e) {
diff --git a/src/main/java/com/interplug/qcast/config/json/HtmlCharacterEscapes.java b/src/main/java/com/interplug/qcast/config/json/HtmlCharacterEscapes.java
index 3e3ac620..c5138cc7 100644
--- a/src/main/java/com/interplug/qcast/config/json/HtmlCharacterEscapes.java
+++ b/src/main/java/com/interplug/qcast/config/json/HtmlCharacterEscapes.java
@@ -3,7 +3,7 @@ package com.interplug.qcast.config.json;
 import com.fasterxml.jackson.core.SerializableString;
 import com.fasterxml.jackson.core.io.CharacterEscapes;
 import com.fasterxml.jackson.core.io.SerializedString;
-import org.apache.commons.lang3.StringEscapeUtils;
+import org.springframework.web.util.HtmlUtils;
 
 /**
  * <pre>
@@ -50,7 +50,7 @@ public class HtmlCharacterEscapes extends CharacterEscapes {
 			sb.append(String.format("%04x", ch));
 			serializedString = new SerializedString(sb.toString());
 		} else {
-			serializedString = new SerializedString(StringEscapeUtils.escapeHtml4(Character.toString(charAt)));
+			serializedString = new SerializedString(HtmlUtils.htmlEscape(Character.toString(charAt)));
 		}
 
 		return serializedString;
diff --git a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
index 384b625f..d1c42b3c 100644
--- a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
+++ b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
@@ -53,6 +53,7 @@ public class InterfaceQsp {
       // GET 요청 시 requestObject를 쿼리 스트링으로 변환
       if (HttpMethod.GET.equals(httpMethod) && requestObject != null) {
         ObjectMapper om = new ObjectMapper();
+        @SuppressWarnings("unchecked")
         Map<String, Object> params = om.convertValue(requestObject, Map.class); // Object -> Map 변환
         String queryString =
             params.entrySet().stream()
@@ -159,11 +160,17 @@ public class InterfaceQsp {
       }
     }
     if (responseObject == null) {
-      return (T) dataJson;
+      @SuppressWarnings("unchecked")
+      T result = (T) dataJson;
+      return result;
     } else if (responseObject instanceof Class<?>) {
-      return om.readValue(dataJson, (Class<T>) responseObject);
+      @SuppressWarnings("unchecked")
+      Class<T> responseClass = (Class<T>) responseObject;
+      return om.readValue(dataJson, responseClass);
     } else if (responseObject instanceof TypeReference<?>) {
-      return om.readValue(dataJson, (TypeReference<T>) responseObject);
+      @SuppressWarnings("unchecked")
+      TypeReference<T> responseType = (TypeReference<T>) responseObject;
+      return om.readValue(dataJson, responseType);
     } else {
       throw new IllegalArgumentException("Unsupported responseType");
     }