org.jeecgframework.poi.util.ExcelUtil Maven / Gradle / Ivy
package org.jeecgframework.poi.util;
/**
* @author Link Xue
* @version 20171025
* POI对EXCEL操作工具
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.util.CellRangeAddress;
public class ExcelUtil {
public static void main(String[] args){
//读取excel数据
ArrayList> result = ExcelUtil.readExcelToObj("D:\\上传表.xlsx");
for(Map map:result){
System.out.println(map);
}
}
/**
* 读取excel数据
* @param path
*/
public static ArrayList> readExcelToObj(String path) {
Workbook wb = null;
ArrayList> result = null;
try {
wb = WorkbookFactory.create(new File(path));
result = readExcel(wb, 0, 2, 0);
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* 读取excel文件
* @param wb
* @param sheetIndex sheet页下标：从0开始
* @param startReadLine 开始读取的行:从0开始
* @param tailLine 去除最后读取的行
*/
public static ArrayList> readExcel(Workbook wb,int sheetIndex, int startReadLine, int tailLine) {
Sheet sheet = wb.getSheetAt(sheetIndex);
Row row = null;
ArrayList> result = new ArrayList>();
for(int i=startReadLine; i map = new HashMap();
for(Cell c : row) {
String returnStr = "";
boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());
//判断是否具有合并单元格
if(isMerge) {
String rs = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
// System.out.print(rs + "------ ");
returnStr = rs;
}else {
// System.out.print(c.getRichStringCellValue()+"++++ ");
returnStr = c.getRichStringCellValue().getString();
}
if(c.getColumnIndex()==0){
map.put("id",returnStr);
}else if(c.getColumnIndex()==1){
map.put("base",returnStr);
}else if(c.getColumnIndex()==2){
map.put("siteName",returnStr);
}else if(c.getColumnIndex()==3){
map.put("articleName",returnStr);
}else if(c.getColumnIndex()==4){
map.put("mediaName",returnStr);
}else if(c.getColumnIndex()==5){
map.put("mediaUrl",returnStr);
}else if(c.getColumnIndex()==6){
map.put("newsSource",returnStr);
}else if(c.getColumnIndex()==7){
map.put("isRecord",returnStr);
}else if(c.getColumnIndex()==8){
map.put("recordTime",returnStr);
}else if(c.getColumnIndex()==9){
map.put("remark",returnStr);
}
}
result.add(map);
// System.out.println();
}
return result;
}
/**
* 获取合并单元格的值
* @param sheet
* @param row
* @param column
* @return
*/
public static String getMergedRegionValue(Sheet sheet ,int row , int column){
int sheetMergeCount = sheet.getNumMergedRegions();
for(int i = 0 ; i < sheetMergeCount ; i++){
CellRangeAddress ca = sheet.getMergedRegion(i);
int firstColumn = ca.getFirstColumn();
int lastColumn = ca.getLastColumn();
int firstRow = ca.getFirstRow();
int lastRow = ca.getLastRow();
if(row >= firstRow && row <= lastRow){
if(column >= firstColumn && column <= lastColumn){
Row fRow = sheet.getRow(firstRow);
Cell fCell = fRow.getCell(firstColumn);
return getCellValue(fCell) ;
}
}
}
return null ;
}
/**
* 判断合并了行
* @param sheet
* @param row
* @param column
* @return
*/
public static boolean isMergedRow(Sheet sheet,int row ,int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if(row == firstRow && row == lastRow){
if(column >= firstColumn && column <= lastColumn){
return true;
}
}
}
return false;
}
/**
* 判断指定的单元格是否是合并单元格
* @param sheet
* @param row 行下标
* @param column 列下标
* @return
*/
public static boolean isMergedRegion(Sheet sheet,int row ,int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if(row >= firstRow && row <= lastRow){
if(column >= firstColumn && column <= lastColumn){
return true;
}
}
}
return false;
}
/**
* 判断sheet页中是否含有合并单元格
* @param sheet
* @return
*/
public static boolean hasMerged(Sheet sheet) {
return sheet.getNumMergedRegions() > 0 ? true : false;
}
/**
* 合并单元格
* @param sheet
* @param firstRow 开始行
* @param lastRow 结束行
* @param firstCol 开始列
* @param lastCol 结束列
*/
public static void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {
//update-begin-author:wangshuai date:20201118 for:一对多导出needMerge 子表数据对应数量小于2时报错 github#1840、gitee I1YH6B
try{
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));
}catch (IllegalArgumentException e){
e.fillInStackTrace();
}
//update-end-author:wangshuai date:20201118 for:一对多导出needMerge 子表数据对应数量小于2时报错 github#1840、gitee I1YH6B
}
/**
* 获取单元格的值
* @param cell
* @return
*/
public static String getCellValue(Cell cell){
if(cell == null) {
return "";
}
if(cell.getCellTypeEnum() == CellType.STRING){
return cell.getStringCellValue();
}else if(cell.getCellTypeEnum() == CellType.BOOLEAN){
return String.valueOf(cell.getBooleanCellValue());
}else if(cell.getCellTypeEnum() == CellType.FORMULA){
return cell.getCellFormula() ;
}else if(cell.getCellTypeEnum() == CellType.NUMERIC){
return String.valueOf(cell.getNumericCellValue());
}
return "";
}
/**
* 数字值，去掉.0后缀
* @param cell
* @return
*/
public static String remove0Suffix(Object value){
if(value!=null) {
// update-begin-author:taoyan date:20210526 for:对于特殊的字符串 V1.0 也进行了去.0操作 这是不合理的
String val = value.toString();
if(val.endsWith(".0") && isNumberString(val)) {
val = val.replace(".0", "");
}
// update-end-author:taoyan date:20210526 for:对于特殊的字符串 V1.0 也进行了去.0操作 这是不合理的
return val;
}
return null;
}
/**
* 判断给定的字符串是不是只有数字
* @param str
* @return
*/
private static boolean isNumberString(String str){
String regex = "^[0-9]+\\.0+$";
Pattern pattern = Pattern.compile(regex);
Matcher m = pattern.matcher(str);
if (m.find()) {
return true;
}
return false;
}
/**
* 从excel读取内容
*/
public static void readContent(String fileName) {
boolean isE2007 = false; //判断是否是excel2007格式
if(fileName.endsWith("xlsx"))
isE2007 = true;
try {
InputStream input = new FileInputStream(fileName); //建立输入流
Workbook wb = null;
//根据文件格式(2003或者2007)来初始化
if(isE2007)
wb = new XSSFWorkbook(input);
else
wb = new HSSFWorkbook(input);
Sheet sheet = wb.getSheetAt(0); //获得第一个表单
Iterator rows = sheet.rowIterator(); //获得第一个表单的迭代器
while (rows.hasNext()) {
Row row = rows.next(); //获得行数据
System.out.println("Row #" + row.getRowNum()); //获得行号从0开始
Iterator| cells = row.cellIterator(); //获得第一行的迭代器
while (cells.hasNext()) {
Cell cell = cells.next();
System.out.println("Cell #" + cell.getColumnIndex());
switch (cell.getCellTypeEnum()) { //根据cell中的类型来输出数据
case NUMERIC:
System.out.println(cell.getNumericCellValue());
break;
case STRING:
System.out.println(cell.getStringCellValue());
break;
case BOOLEAN:
System.out.println(cell.getBooleanCellValue());
break;
case FORMULA:
System.out.println(cell.getCellFormula());
break;
default:
System.out.println("unsuported sell type======="+cell.getCellTypeEnum());
break;
}
}
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
} |
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