block invalid type file

src/pages/PublicNotice/ApplyForm/PublicNoticeApplyForm.js

@@ -92,9 +92,19 @@ const PublicNoticeApplyForm = ({loadedData, selections}) => {
     });
 
     const readFile=(event)=>{
-        if(event.target.files[0]){
-            if(event.target.files[0])
-            setAttachment(event.target.files[0]);
+        let file = event.target.files[0];
+        if(file){
+            if(file.type == "application/vnd.openxmlformats-officedocument.wordprocessingml.documen"
+            || file.type == "application/msword"
+            || file.type == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+            || file.type == "application/vnd.ms-excel"
+            ){
+                setAttachment(event.target.files[0]);
+            }else{
+                setWarningText("請上傳有效檔案 (檔案格式: .doc, .docx, .xls, .xlsx)");
+                setIsWarningPopUp(true);
+                return;
+            }
         }
     }
 
@@ -178,7 +188,7 @@ const PublicNoticeApplyForm = ({loadedData, selections}) => {
                                 id="uploadFileBtn" 
                                 name="file" 
                                 type="file" 
-                                accept=".doc,.docx,.xml,.xlsx" 
+                                accept=".doc,.docx,.xls,.xlsx" 
                                 style={{ display: 'none' }}
                                 onChange={(event)=> { 
                                     readFile(event)