import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.List;
import net.sf.json.JSONArray;
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.HSSFDateUtil;
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.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataValidation;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.CellRangeAddressList;
public class ExcelUtils {
private static final int XLS_MAX_ROW = 65535; //0开始，xls_max_row代表行
private static FormulaEvaluator evaluator;
private static final int SECONDS_PER_MINUTE = 60;
private static final int MINUTES_PER_HOUR = 60;
private static final int HOURS_PER_DAY = 24;
private static final int SECONDS_PER_DAY = (HOURS_PER_DAY * MINUTES_PER_HOUR * SECONDS_PER_MINUTE);
/**
一天的毫秒数
**/
private static final long DAY_MILLISECONDS = SECONDS_PER_DAY * 1000L;
private static SimpleDateFormat sdFormat;
/**
* 生成带数据的workBook
* @Title :expExcel
* @Description :TODO
* @Param :@param head 单行表头，不支持合并行列
* @Param :@param data 表数据[[1,2]],[[]]
* @Param :@param sheetName sheet名称[sheetName1,sheetName2]
* @Param :@param autoCloumnWidth 是否自适应列宽度 ture:是。false:否
* @Param :@return
* @Return :HSSFWorkbook
* @Author :luwenyong
* @Date :2019年3月5日 下午5:19:29
*/
public static HSSFWorkbook expExcel(JSONArray head,JSONArray data,JSONArray sheetName,boolean autoCloumnWidth){
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet tempSheet=null;
//循环创建sheet页
for (int i = 0; i < sheetName.size(); i++) {
tempSheet=workbook.createSheet(sheetName.getString(i));
HSSFRow row = tempSheet.createRow(0);
HSSFCell cell = null;
//循环创建标题
for (int j = 0; j < head.size(); j++) {
cell = row.createCell(j);
cell.setCellValue(head.getString(j));
cell.setCellStyle(setHeadStyle(workbook));
}
for (int j = 0; j < data.size(); j++) {
row = tempSheet.createRow(j + 1);
JSONArray dataInfo = data.getJSONArray(j);
for (int k = 0; k < dataInfo.size(); k++) {
cell = row.createCell(k);
cell.setCellValue(dataInfo.getString(k));
cell.setCellStyle(setBodyStyle(workbook));
}
}
for (int j = 0, isize = head.size(); j < isize; j++) {
if(autoCloumnWidth){
tempSheet.autoSizeColumn(j);
}else{
tempSheet.setColumnWidth(j,3766);
}
}
}
return workbook;
}
/**
* 增加表格下拉选
* @Title :addHideSheetAndSet
* @Description :TODO
* @Param :@param workbook execl对象
* @Param :@param selectName 下拉选内容
* @Param :@param roleName 规则名称
* @Param :@param sheetIndex 第几个sheet
* @Return :void
* @Author :luwenyong
* @Date :2019年3月5日 下午5:23:55
*/
public static void addHideSheetAndSet(HSSFWorkbook workbook,List selectName,String roleName,int sheetIndex){
HSSFSheet hiddenSheet = workbook.createSheet(roleName);
workbook.setSheetHidden(sheetIndex, true);
for(int i=0;i= 26) {
s.insert(0, (char) ('A' + index % 26));
index = index / 26 - 1;
}
s.insert(0, (char) ('A' + index));
return s.toString();
}
/**
* 生成下拉框及提示
*
* @param formulaString 规则名称，也就是下拉选的名字
* @param columnIndex 第几列
* @return
*/
private static DataValidation getDataValidationByFormula(String formulaString, int columnIndex) {
// 加载下拉列表内容
DVConstraint constraint = DVConstraint.createFormulaListConstraint(formulaString);
// 设置数据有效性加载在哪个单元格上。
// 四个参数分别是：起始行、终止行、起始列、终止列
CellRangeAddressList regions = new CellRangeAddressList(1, XLS_MAX_ROW, columnIndex, columnIndex);
// 数据有效性对象
DataValidation dataValidationList = new HSSFDataValidation(regions, constraint);
dataValidationList.createErrorBox("Error", "请选择或输入有效的选项，或下载最新模版重试！");
String promptText = initPromptText(columnIndex);
dataValidationList.createPromptBox("", promptText);
return dataValidationList;
}
/**
* 初始化下拉框提示信息
*
* @param columnIndex
* @return
*/
private static String initPromptText(int columnIndex) {
String promptText ="请下拉选择或输入有效项";
return promptText;
}
//获取单元格各类型值，返回字符串类型
private static String getCellValueByCell(Cell cell,FormulaEvaluator evaluator) {
String strCell = "";
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
strCell = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
DecimalFormat df = new DecimalFormat("0");
if(HSSFDateUtil.isCellDateFormatted(cell)){
strCell=toDate(cell.getNumericCellValue(),"yyyy-MM-dd");
}else{
strCell = df.format(cell.getNumericCellValue());
}
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
strCell = String.valueOf(cell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
strCell = "";
break;
case HSSFCell.CELL_TYPE_FORMULA:
evaluator.evaluateFormulaCell(cell);
strCell = String.valueOf(evaluator.evaluate(cell).getNumberValue());
break;
default:
strCell = "";
break;
}
return strCell.trim();
}
/**
转换方法
@parma numberString 要转换的浮点数
@parma format 要获得的格式 例如"hh:mm:ss"
**/
public static String toDate(double numberString, String format) {
sdFormat = new SimpleDateFormat(format);
int wholeDays = (int)Math.floor(numberString);
int millisecondsInday = (int)((numberString - wholeDays) * DAY_MILLISECONDS + 0.5);
Calendar calendar = new GregorianCalendar();
setCalendar(calendar, wholeDays, millisecondsInday, false);
return sdFormat.format(calendar.getTime());
}
private static void setCalendar(Calendar calendar, int wholeDays,int millisecondsInDay, boolean use1904windowing) {
int startYear = 1900;
int dayAdjust = -1; // Excel thinks 2/29/1900 is a valid date, which it isn't
if (use1904windowing) {
startYear = 1904;
dayAdjust = 1; // 1904 date windowing uses 1/2/1904 as the first day
}
else if (wholeDays < 61) {
// Date is prior to 3/1/1900, so adjust because Excel thinks 2/29/1900 exists
// If Excel date == 2/29/1900, will become 3/1/1900 in Java representation
dayAdjust = 0;
}
calendar.set(startYear,0, wholeDays + dayAdjust, 0, 0, 0);
calendar.set(GregorianCalendar.MILLISECOND, millisecondsInDay);
}
}
