POI读取xls和xlsx

来源：互联网发布：java 接口调用接口编辑：程序博客网时间：2024/05/21 19:21

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
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.xssf.usermodel.XSSFWorkbook;
public class TestReadAndWrite {
public static void main(String[] args) throws IOException {
String path = "d:/";
String fileName = "test";
String fileType = "xlsx";
writer(path, fileName, fileType);
read(path, fileName, fileType);
}
private static void writer(String path, String fileName,String fileType) throws IOException {
//创建工作文档对象
Workbook wb = null;
if (fileType.equals("xls")) {
wb = new HSSFWorkbook();
}
else if(fileType.equals("xlsx"))
{
wb = new XSSFWorkbook();
}
else
{
System.out.println("您的文档格式不正确！");
}
//创建sheet对象
Sheet sheet1 = (Sheet) wb.createSheet("sheet1");
//循环写入行数据
for (int i = 0; i < 5; i++) {
Row row = (Row) sheet1.createRow(i);
//循环写入列数据
for (int j = 0; j < 8; j++) {
Cell cell = row.createCell(j);
cell.setCellValue("测试"+j);
}
}
//创建文件流
OutputStream stream = new FileOutputStream(path+fileName+"."+fileType);
//写入数据
wb.write(stream);
//关闭文件流
stream.close();
}
public static void read(String path,String fileName,String fileType) throws IOException
{
InputStream stream = new FileInputStream(path+fileName+"."+fileType);
Workbook wb = null;
if (fileType.equals("xls")) {
wb = new HSSFWorkbook(stream);
}
else if (fileType.equals("xlsx")) {
wb = new XSSFWorkbook(stream);
}
else {
System.out.println("您输入的excel格式不正确");
}
Sheet sheet1 = wb.getSheetAt(0);
for (Row row : sheet1) {
for (Cell cell : row) {
System.out.print(cell.getStringCellValue()+" ");
}
System.out.println();
}
}
}