Java 如何正确地从ApachePOI数据验证器强制转换显式ListValue以进行测试？

我已将数据约束添加到Apache POI工作簿的工作表中。现在我想添加一个单元测试

我的约束是两个值的简单列表，“是”和“否”

我目前的尝试：

Assert.assertEquals(
  Arrays.toString("yes,no".split(",")),
  Arrays.toString(dv.get(0).getValidationConstraint().getExplicitListValues()));
}

失败于

expected:<[[yes, no]]> but was:<[["yes, no"]]

及

没关系，

array.toString（…getExplicitListValues（））

的输出总是会显示额外的引号

--编辑2：

为了解决这个问题，我按照@axel ichter建议的方式创建了这个列表：

XSSFDataValidationConstraint c =
  (XSSFDataValidationConstraint) dvHelper.createExplicitListConstraint(
  "\"yes,no".split(","));

然后我得到了一些别的东西：

expected:<[[yes, no]]> but was:<[[""yes, no"]]>

---

无法复制您的问题。使用apache poi 4.0.1以下代码：

import java.io.FileOutputStream;
import java.io.FileInputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.ss.util.CellRangeAddressList;
import java.util.List;
import java.util.Arrays;

class CreateExcelDataValidationLists {

 public static void main(String[] args) throws Exception {

  Workbook workbook = new XSSFWorkbook();
  Sheet sheet = workbook.createSheet("Sheet1");
  DataValidationHelper dvHelper = sheet.getDataValidationHelper();
  String constraint = "yes,no";
  DataValidationConstraint dvConstraint = dvHelper.createExplicitListConstraint(constraint.split(",")) ;
  CellRangeAddressList addressList = new CellRangeAddressList(0,0,0,0);          
  DataValidation validation = dvHelper.createValidation(dvConstraint, addressList);
  sheet.addValidationData(validation);

  FileOutputStream out = new FileOutputStream("CreateExcelDataValidationLists.xlsx");
  workbook.write(out);
  out.close();
  workbook.close();

  Thread.sleep(1000);

  workbook = WorkbookFactory.create(new FileInputStream("CreateExcelDataValidationLists.xlsx"));
  sheet = workbook.getSheetAt(0);

  @SuppressWarnings("unchecked")
  List<DataValidation> validations = (List<DataValidation>)sheet.getDataValidations();

  System.out.println(Arrays.toString(validations.get(0).getValidationConstraint().getExplicitListValues()));

 }
}

---

刚刚测试过。同样的代码使用ApachePOI3.14确实会产生

["yes, no"]

---

列表约束是如何设置的？必须是

…createExplicitListConstraint（新字符串[]{“是”、“否”}）

。似乎是

…createExplicitListConstraint（新字符串[]{“\”yes，no\\”}

。我使用（此处简化）：

createExplicitListConstraint（“yes，no”.split（“，”）

），因为列表值来自一个资源/db，该资源/db为每个集合保存一个本地化字符串。Hm，但是

dv.get（0）.getValidationConstraint（）的结果.getExplicitListValues（））

看起来更像

createExplicitListConstraint（“\”是，否“）.split（“，”）

。我用创建它的所有方法编辑它。。。无法解释。也许这是POI代码中的错误？请看我的新的第二次编辑。额外的引号总是在那里，即使我按照你的建议包括引号。。。然后我得到两个额外的报价！我从未建议添加额外的引号。我所说的是，看起来你的字符串中已经有了额外的引号。谢谢分享！我在3点14分。可能是一只老虫子。。。将尝试更新。已确认！更新到4.0.1，我所有的问题都消失了！！！非常感谢！

ArrayUtils.contains( ....getExplicitListValues(), "yes") // returns null;

...getExplicitListValues().getClass().getTypeName() // java.lang.String[]

import java.io.FileOutputStream;
import java.io.FileInputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.ss.util.CellRangeAddressList;
import java.util.List;
import java.util.Arrays;

class CreateExcelDataValidationLists {

 public static void main(String[] args) throws Exception {

  Workbook workbook = new XSSFWorkbook();
  Sheet sheet = workbook.createSheet("Sheet1");
  DataValidationHelper dvHelper = sheet.getDataValidationHelper();
  String constraint = "yes,no";
  DataValidationConstraint dvConstraint = dvHelper.createExplicitListConstraint(constraint.split(",")) ;
  CellRangeAddressList addressList = new CellRangeAddressList(0,0,0,0);          
  DataValidation validation = dvHelper.createValidation(dvConstraint, addressList);
  sheet.addValidationData(validation);

  FileOutputStream out = new FileOutputStream("CreateExcelDataValidationLists.xlsx");
  workbook.write(out);
  out.close();
  workbook.close();

  Thread.sleep(1000);

  workbook = WorkbookFactory.create(new FileInputStream("CreateExcelDataValidationLists.xlsx"));
  sheet = workbook.getSheetAt(0);

  @SuppressWarnings("unchecked")
  List<DataValidation> validations = (List<DataValidation>)sheet.getDataValidations();

  System.out.println(Arrays.toString(validations.get(0).getValidationConstraint().getExplicitListValues()));

 }
}

[yes, no]

["yes, no"]