package com.ce.worldExcel;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
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.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
public class ExcelPoi {
public static void main(String[] args) {
try {
// WriteDemo();
ReadDemo();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* poi写读Excel
*
* @throws IOException
*/
public static void WriteDemo() throws IOException {
// 创建工作薄
HSSFWorkbook workbook = new HSSFWorkbook();
// 创建工作表
HSSFSheet sheet = workbook.createSheet("sheet1");
for (int row = 0; row < 10; row++) {
HSSFRow rows = sheet.createRow(row);
for (int col = 0; col < 10; col++) {
// 向工作表中添加数据
rows.createCell(col).setCellValue("poiWrite" + row + col);
}
}
File xlsFile = new File("E:\\新建文件夹 (2)\\poi.xls");
FileOutputStream xlsStream = new FileOutputStream(xlsFile);
workbook.write(xlsStream);
}
/**
* poi读Excel
*
* @throws Exception
*/
public static void ReadDemo() throws Exception {
File xlsFile = new File("E:\\新建文件夹 (2)\\poi.xls");
// 获得工作簿
Workbook workbook = WorkbookFactory.create(xlsFile);
// 获得工作表个数
int sheetCount = workbook.getNumberOfSheets();
// 遍历工作表
for (int i = 0; i < sheetCount; i++) {
Sheet sheet = workbook.getSheetAt(i);
// 获得行数
int rows = sheet.getLastRowNum() + 1;
// 获得列数,先获得一行,在得到改行列数
Row tmp = sheet.getRow(0);
if (tmp == null) {
continue;
}
int cols = tmp.getPhysicalNumberOfCells();
// 读取数据
for (int row = 0; row < rows; row++) {
Row r = sheet.getRow(row);
for (int col = 0; col < cols; col++) {
System.out.printf("%10s", r.getCell(col).getStringCellValue() + "\t");
}
System.out.println();
}
}
}
}
poi读Excel
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转载自blog.csdn.net/weixin_42666837/article/details/86667715
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