deletemapping 어노테이션 제거.

src/main/java/com/dbnt/kcgfilemanager/controller/BoardController.java

@@ -124,7 +124,7 @@ public class BoardController {
     mav.addObject("logList", boardService.selectContentLog(content.getContentSeq()));
     return mav;
   }
-  @DeleteMapping("/deleteContent")
+  @PostMapping("/deleteContent")
   public Integer deleteContent(Board content, @AuthenticationPrincipal UserInfo loginUser){
     return boardService.deleteContent(content, loginUser);
   }

src/main/java/com/dbnt/kcgfilemanager/controller/adminController.java

@@ -57,7 +57,7 @@ public class adminController {
     boardCategoryService.insertBoardCategory(categoryList);
     return categoryList.get(0).getDepth();
   }
-  @DeleteMapping("/deleteCategory")
+  @PostMapping("/deleteCategory")
   @ResponseBody
   public int deleteBoardCategory(Integer categorySeq, Integer depth) {
     boardCategoryService.deleteBoardCategory(categorySeq, depth);

src/main/resources/static/js/admin/categoryMgt.js

@@ -47,7 +47,7 @@ $(document).on('click', '.deleteCategoryBtn', function (){
       }
       if(confirm(category+"의 선택된 분류를 삭제하시겠습니까?"+msg)){
         $.ajax({
-          type : 'DELETE',
+          type : 'POST',
           url : "/admin/deleteCategory",
           data : {categorySeq: categorySeq, depth: depth},
           beforeSend: function (xhr){

src/main/resources/static/js/board/contentList.js

@@ -65,7 +65,7 @@ $(document).on('click', '#zipDownBtn', function (){
 $(document).on('click', '#deleteBtn', function (){
   if(confirm("이 게시물을 삭제하시겠습니까?\n되돌릴 수 없습니다.")){
     $.ajax({
-      type : 'DELETE',
+      type : 'POST',
       url : "/board/deleteContent",
       data : {contentSeq: Number($(this).attr("data-contentseq"))},
       beforeSend: function (xhr){