java读取含有合并单元格的Excel
java读取含有合并单元格的Excel
Excel如下：
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.*;
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){
ExcelUtil excelUtil = new ExcelUtil();
//读取excel数据
List<Map<String,String>> result = excelUtil.readExcelToObj("C:\\Users\\miracle\\Desktop\\合并单元格.xlsx");
for(Map<String,String> map:result){
System.out.println(map);
}
}
/**
* 读取excel数据
* @param path
*/
private List<Map<String,String>> readExcelToObj(String path) {
Workbook wb = null;
List<Map<String,String>> result = null;
try {
wb = WorkbookFactory.create(new File(path));
result = readExcel(wb, 0, 1, 0);
} catch (InvalidFormatException e) {
e.printStackTrace();
} catch (IOException 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
*/
private List<Map<String,String>> readExcel(Workbook wb,int sheetIndex, int startReadLine, int tailLine) {
Sheet sheet = wb.getSheetAt(sheetIndex);
Row row = null;
List<Map<String,String>> result = new ArrayList<Map<String,String>>();
for(int i=startReadLine; i<sheet.getLastRowNum()-tailLine+1; i++) {
row = sheet.getRow(i);
Map<String,String> map = new HashMap<String,String>();
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 {
//设置单元格类型
c.setCellType(CellType.STRING);
// System.out.print(c.getRichStringCellValue()+"++++ ");
returnStr = c.getRichStringCellValue().getString();
}
if(c.getColumnIndex()==0){
map.put("class",returnStr);
}else if(c.getColumnIndex()==1){
map.put("course",returnStr);
}else if(c.getColumnIndex()==2){
map.put("student",returnStr);
}else if(c.getColumnIndex()==3){
map.put("score",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 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
*/
private 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
*/
private 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
*/
private 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
*/
private void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));
}
/**
* 获取单元格的值
* @param cell
* @return
*/
public String getCellValue(Cell cell){
if(cell == null) return "";
if(cell.getCellType() == Cell.CELL_TYPE_STRING){
return cell.getStringCellValue();
}else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){
return String.valueOf(cell.getBooleanCellValue());
}else if(cell.getCellType() == Cell.CELL_TYPE_FORMULA){
return cell.getCellFormula() ;
}else if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
return String.valueOf(cell.getNumericCellValue());
}
return "";
}
/**
* 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<Row> 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<Cell> 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.getCellType()) { //根据cell中的类型来输出数据
case HSSFCell.CELL_TYPE_NUMERIC:
System.out.println(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_STRING:
System.out.println(cell.getStringCellValue());
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
System.out.println(cell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_FORMULA:
System.out.println(cell.getCellFormula());
break;
default:
System.out.println("unsuported sell type======="+cell.getCellType());
break;
}
}
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
执行结果如下：
{score=10, student=张三, course=语文, class=一（1）班}
{score=20, student=李四, course=语文, class=一（1）班}
{score=30, student=王五, course=语文, class=一（1）班}
{score=40, student=赵六, course=数学, class=一（1）班}
{score=50, student=田七, course=数学, class=一（1）班}
{score=60, student=周扒皮, course=数学, class=一（1）班}