使用poi导出Excel，并设定单元格内容类型，抛出异常

import org.apache.poi.hssf.usermodel.DVConstraint;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
import org.apache.poi.hssf.usermodel.HSSFDataValidationHelper;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress;
import org.apache.poi.hssf.util.CellRangeAddressList;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DataValidation;
import org.apache.poi.ss.usermodel.DataValidationConstraint;
import org.apache.poi.ss.usermodel.DataValidationHelper;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType;
import org.apache.poi.ss.usermodel.DataValidationConstraint.OperatorType;

/**
* 设定为输入类型为数值
* @param firstRow
* @param endRow
* @param firstCol
* @param endCol
* 注意：如果是一个单元格，需要firstRow = endRow, firstCol = endCol
* @return
*/
public static HSSFDataValidation setDataValidation(int firstRow,int endRow,int firstCol,int endCol)
{

CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
//数值型，大于0
DVConstraint constraint  = DVConstraint.createNumericConstraint(ValidationType.DECIMAL, OperatorType.GREATER_THAN, "0", null);
//整数   1到100之间
//              DVConstraint constraint  = DVConstraint.createNumericConstraint(ValidationType.INTEGER, OperatorType.BETWEEN, "1", “100");

HSSFDataValidation dataValidation = new HSSFDataValidation(regions, constraint);//add

dataValidation.createErrorBox("输入值类型或大小有误", "数值型，请输入不小于0的数值");
dataValidation.createPromptBox("", null);
dataValidation.setShowErrorBox(true);

return dataValidation;
}

/**
* 添加数据有效性检查.
* @param sheet 要添加此检查的Sheet
* @param firstRow 开始行
* @param lastRow 结束行
* @param firstCol 开始列
* @param lastCol 结束列
* @param explicitListValues 有效性检查的下拉列表
* @throws IllegalArgumentException 如果传入的行或者列小于0(< 0)或者结束行/列比开始行/列小
* 注意： 如果是一个单元格，需要 firstRow = lastRow , firstCol= lastCol
*/
public static void setValidationData(Sheet sheet, int firstRow,  int lastRow,
int firstCol,  int lastCol,String[] explicitListValues) throws IllegalArgumentException{
if (firstRow < 0 || lastRow < 0 || firstCol < 0 || lastCol < 0 || lastRow < firstRow || lastCol < firstCol) {
throw new IllegalArgumentException("Wrong Row or Column index : " + firstRow+":"+lastRow+":"+firstCol+":" +lastCol);
}
if (sheet instanceof XSSFSheet) {
XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper((XSSFSheet)sheet);
XSSFDataValidationConstraint dvConstraint = (XSSFDataValidationConstraint) dvHelper
.createExplicitListConstraint(explicitListValues);
CellRangeAddressList addressList = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
XSSFDataValidation validation = (XSSFDataValidation) dvHelper.createValidation(dvConstraint, addressList);
validation.setSuppressDropDownArrow(true);
validation.setShowErrorBox(true);
sheet.addValidationData(validation);
} else if(sheet instanceof HSSFSheet){
CellRangeAddressList addressList = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
DVConstraint dvConstraint = DVConstraint.createExplicitListConstraint(explicitListValues);
DataValidation validation = new HSSFDataValidation(addressList, dvConstraint);
validation.setSuppressDropDownArrow(true);
validation.setShowErrorBox(true);
sheet.addValidationData(validation);
}
}

/**
* 设置模板文件的输入项表格样式
* @param wb
* @return
*/
public static CellStyle setValueStyle(Workbook wb) {
//The maximum number of cell styles was exceeded. You can define up to 4000 styles in a .xls workbook
CellStyle style = wb.createCellStyle();
//对齐方式设置
style.setAlignment(CellStyle.ALIGN_LEFT);
//边框颜色和宽度设置
style.setBorderBottom(CellStyle.BORDER_THIN);
style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderLeft(CellStyle.BORDER_THIN);
style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderRight(CellStyle.BORDER_THIN);
style.setRightBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderTop(CellStyle.BORDER_THIN);
style.setTopBorderColor(IndexedColors.BLACK.getIndex());

//            style.setFillBackgroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
//设置背景颜色
//            style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.index);
style.setFillBackgroundColor(HSSFColor.LIGHT_TURQUOISE.index);
style.setFillForegroundColor(HSSFColor.LIGHT_TURQUOISE.index); //设置背景色
style.setFillPattern(CellStyle.SOLID_FOREGROUND);
//设置自动换行
style.setWrapText(true);
return style;
}

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