给要下载的表格设置编辑密码（打印单的申请时间）

src/main/java/com/dreamchaser/depository_manage/service/impl/ExcelServiceImpl.java

@@ -18,6 +18,8 @@ import com.dreamchaser.depository_manage.service.*;
 import com.dreamchaser.depository_manage.utils.*;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang.StringUtils;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.stereotype.Service;
@@ -617,6 +619,14 @@ public class ExcelServiceImpl implements ExcelService {
                 map.put("page", i);
                 map.put("pagesum", pagesum);
                 excelWriter.fill(map, writeSheet);
+
+                // 用于添加权限
+                Workbook workbook = excelWriter.writeContext().writeWorkbookHolder().getWorkbook();
+                int numberOfSheets = workbook.getNumberOfSheets();
+                for (int x = 0; x < numberOfSheets; x++) {
+                    Sheet sheetAt = workbook.getSheetAt(x);
+                    sheetAt.protectSheet(record.getApplicantTime());
+                }
             }
             fileNameList.add(fileName);
         }