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I intercepted part of the code I originally developed. You can refer to the action and service (compatible with new excel export) layers

response.setContentType("application/octet-stream")

The problem is solved. Reason: I used AJAX get to submit, which would not open the save path interface

$.get("http://localhost:8080/StaffOS/export_excel",function(data,status){
   if(data == "success"){
   $.messager.alert('My Title','導(dǎo)出成功','info');
    }
    });
    
    改成：window.location="/StaffOS/export_excel";
    
    還有一點(diǎn)，不同的瀏覽器也會(huì)有差別，之前使用谷歌，就直接下載了，沒(méi)有出現(xiàn)選擇路徑的框（可能在哪里需要設(shè)置吧），后來(lái)在使用火狐的就能出現(xiàn)選擇下載保存路徑的框。