用能空调代码提交 终端相关代码修改

pqs-common/common-poi/src/main/java/com/njcn/poi/excel/ExcelUtil.java

@@ -5,7 +5,11 @@ import cn.afterturn.easypoi.excel.entity.ExportParams;
 import cn.hutool.core.util.CharsetUtil;
 import com.njcn.web.utils.HttpServletUtil;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.poi.hssf.usermodel.DVConstraint;
+import org.apache.poi.hssf.usermodel.HSSFDataValidation;
+import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.util.CellRangeAddressList;
 
 import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletResponse;
@@ -80,4 +84,27 @@ public class ExcelUtil {
     }
 
 
+    /**
+     * firstRow 開始行號 根据此项目，默认为2(下标0开始)
+     * lastRow  根据此项目，默认为最大65535
+     * @param firstCol 区域中第一个单元格的列号 (下标0开始)
+     * @param lastCol 区域中最后一个单元格的列号
+     * @param strings 下拉内容
+     * */
+    public static void selectList(Workbook workbook,int firstCol,int lastCol,String[] strings ){
+
+        Sheet sheet = workbook.getSheetAt(0);
+        //  生成下拉列表
+        //  只对(x，x)单元格有效
+        CellRangeAddressList cellRangeAddressList = new CellRangeAddressList(3, 65535, firstCol, lastCol);
+        //  生成下拉框内容
+        DVConstraint dvConstraint = DVConstraint.createExplicitListConstraint(strings);
+        HSSFDataValidation dataValidation = new HSSFDataValidation(cellRangeAddressList, dvConstraint);
+        //  对sheet页生效
+        sheet.addValidationData(dataValidation);
+
+    }
+
+
+
 }