java Apachepoi限制用户仅选择下拉列表中的值

Question

如何让用户只选择下拉列表中的一个值，而不在excel工作表中输入自己的值。我正在使用Java库ApachePOI

Answer 1

如果您使用的是HSSF工作手册，请在下面使用

    DVConstraint dvConstraint = DVConstraint.createExplicitListConstraint(new String[]{"ABC"});
    DataValidation dataValidation = new HSSFDataValidation(programList, dvConstraint);
    dataValidation.setSuppressDropDownArrow(true);
    dataValidation.setShowErrorBox(true);
    dataValidation.setShowPromptBox(true);

    targetSheet.addValidationData(dataValidation);

对于XSSFWorkbook，请按如下所示使用

        DataValidationHelper validationHelper=new XSSFDataValidationHelper(targetSheet);
        DataValidationConstraint constraint =validationHelper.createExplicitListConstraint(new String[]{"ABC"});
        DataValidation dataValidation = validationHelper.createValidation(constraint, programList);
        dataValidation.setSuppressDropDownArrow(true);   
        dataValidation.setShowErrorBox(true);
        dataValidation.setShowPromptBox(true);
        targetSheet.addValidationData(dataValidation);