poi生成excel設置單列爲下拉列表值超過255問題解決方案

時間 2019-11-19

標籤 poi 生成 excel 設置單列下拉列表超過問題解決方案欄目 Apache 简体版

原文原文鏈接

poi生成2003如下版本excel（.xls後綴文件）

注意：該版本生成的會存在兼容性問題，下述會進行說明。數組

項目引用poi庫的依賴 (略過)excel

構造生成excel模板方法code

// 傳入下拉列表數組值，構造信息模板	
  public static Workbook generateExcel(String[] typeArrays) {
  	Workbook wb = new HSSFWorkbook();
  	// 建立模板工做表
  	Sheet sheet = wb.createSheet("test");
  	// 建立下拉列表值存儲工做表並設置值
  	genearteOtherSheet(wb, typeArrays);

  	// 建立模板列信息並綁定下拉列表值
  	Row row = sheet.createRow(0);
  	// 設置列信息樣式
  	setStyle(wb, sheet, 0);
  	setStyle(wb, sheet, 1);
  	// 綁定列信息
  	Cell nameCell = row.createCell((int) 0);
              nameCell.setCellValue("名稱");
              Cell typeCell = row.createCell((int) 1);
              typeCell.setCellValue("類型");

  	// 設置下拉列表直綁定對哪一頁起做用
  	        sheet.addValidationData(SetDataValidation("typelist!$A$1:$A$" + typeArrays.length, 1, 0, typeArrays.length, 0));	

  	// 隱藏做爲下拉列表值的Sheet
  	wb.setSheetHidden(wb.getSheetIndex("typelist"), 1);

  	return wb;
  }

  // 建立下拉列表值存儲工做表並設置值
  public static void genearteOtherSheet(Workbook wb, String[] typeArrays) {
      // 建立下拉列表值存儲工做表
      Sheet sheet = wb.createSheet("typelist");
  // 循環往該sheet中設置添加下拉列表的值
      for (int i = 0; i < typeArrays.length; i++) {
          Row row = sheet.createRow(i);
          Cell cell = row.createCell((int) 0);
          cell.setCellValue(typeArrays[i]);
      }
  }

  // 設置列信息樣式
  public static void setStyle(Workbook wb, Sheet sheet,int colNum) {
  	CellStyle cellStyle = wb.createCellStyle();
      cellStyle.setAlignment(CellStyle.ALIGN_CENTER);
      DataFormat format = wb.createDataFormat();
      cellStyle.setDataFormat(format.getFormat("@"));

      sheet.setDefaultColumnStyle(colNum, cellStyle);
  } 

  // 設置並引用其餘Sheet做爲綁定下拉列表數據
  public static DataValidation SetDataValidation(String strFormula, int firstRow, int firstCol, int endRow, int endCol) {
  	// 表示A列1-59行做爲下拉列表來源數據
      // String formula = "typelist!$A$1:$A$59" ;
      // 原順序爲 起始行 起始列 終止行 終止列
      CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
  	// add
      DVConstraint constraint = DVConstraint.createFormulaListConstraint(strFormula);
  	// add
      DataValidation dataValidation = new HSSFDataValidation(regions, constraint);

  	return dataValidation;
  }

  public static void main(String[] args) throws Exception {
      List<String> typelist = new ArrayList<String>();
      for (int i = 0; i < 200; i++) {
          typelist.add("T" + (0 + i));
      }
      String[] typeArrays = typelist.toArray(new String[typelist.size()]);
      Workbook wb = generateExcel(typeArrays);
      File tempFile = new File("C:\\Users\\gqd\\Desktop\\test.xls");
      OutputStream os = new FileOutputStream(tempFile);

      wb.write(os);
      os.close();
  }

問題點orm
- 單元格下拉選擇值，保存提示引用兼容性問題
- 強制保存後，從新打開，下拉列沒法獲取引用並取值

poi生成2007以上版本excel（.xlsx後綴文件）

項目引用poi庫的依賴 (略過)get

構造生成excel模板方法it

// 傳入下拉列表數組值，構造信息模板	
  public static Workbook generateExcel(String[] typeArrays) {
  	Workbook wb = new XSSFWorkbook();
  	// 建立模板工做表
  	Sheet sheet = wb.createSheet("test");
  	// 建立下拉列表值存儲工做表並設置值
  	genearteOtherSheet(wb, typeArrays);

  	// 建立模板列信息並綁定下拉列表值
  	Row row = sheet.createRow(0);
  	// 設置列信息樣式 -- 當前樣式對於列信息未居中
  	setStyle(wb, sheet, 0);
  	setStyle(wb, sheet, 1);
  	// 綁定列信息
      Cell nameCell = row.createCell((int) 0);
      nameCell.setCellValue("名稱");
      Cell typeCell = row.createCell((int) 1);
      typeCell.setCellValue("類型");

  	// 設置下拉列表直綁定對哪一頁起做用
      sheet.addValidationData(SetDataValidation(wb, "typelist!$A$1:$A$" + typeArrays.length, 1, 0, typeArrays.length, 0));	

  	// 隱藏做爲下拉列表值的Sheet
      wb.setSheetHidden(wb.getSheetIndex("typelist"), 1);

  	return wb;
  }

  // 建立下拉列表值存儲工做表並設置值
  public static void genearteOtherSheet(Workbook wb, String[] typeArrays) {
      // 建立下拉列表值存儲工做表
      Sheet sheet = wb.createSheet("typelist");
      // 循環往該sheet中設置添加下拉列表的值
      for (int i = 0; i < typeArrays.length; i++) {
          Row row = sheet.createRow(i);
          Cell cell = row.createCell((int) 0);
          cell.setCellValue(typeArrays[i]);
      }
  }

  // 設置列信息樣式
  public static void setStyle(Workbook wb, Sheet sheet,int colNum) {
      CellStyle cellStyle = wb.createCellStyle();
      cellStyle.setAlignment(CellStyle.ALIGN_CENTER);
      DataFormat format = wb.createDataFormat();
      cellStyle.setDataFormat(format.getFormat("@"));

      sheet.setDefaultColumnStyle(colNum, cellStyle);
  } 

  // 設置並引用其餘Sheet做爲綁定下拉列表數據
  public static DataValidation SetDataValidation(Workbook wb, String strFormula, int firstRow, int firstCol, int endRow, int endCol) {
  	// 表示A列1-59行做爲下拉列表來源數據
      // String formula = "typelist!$A$1:$A$59" ;
      // 原順序爲 起始行 起始列 終止行 終止列
      CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
      DataValidationHelper dvHelper = new XSSFDataValidationHelper((XSSFSheet) wb.getSheet("typelist"));
  	DataValidationConstraint formulaListConstraint = dvHelper.createFormulaListConstraint(strFormula);
  	DataValidation dataValidation = dvHelper.createValidation(formulaListConstraint, regions);

  	return dataValidation;
  }

  public static void main(String[] args) throws Exception {
      List<String> typelist = new ArrayList<String>();
      for (int i = 0; i < 200; i++) {
          typelist.add("T" + (0 + i));
      }
      String[] typeArrays = typelist.toArray(new String[typelist.size()]);
      Workbook wb = generateExcel(typeArrays);
      File tempFile = new File("C:\\Users\\gqd\\Desktop\\test.xlsx");
      OutputStream os = new FileOutputStream(tempFile);

      wb.write(os);
      os.close();
  }