package com.wo116114.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
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:/dianping/gather/";
String fileName = "result";
String fileType = "xlsx";
writer(path, fileName, fileType);
read(path, fileName, fileType);
}
private static void writer(String path, String fileName, String fileType)
throws IOException {
InputStream stream = new FileInputStream(path + fileName + "."
+ fileType);
// 创建工作文档对象
Workbook wb = null;
if (fileType.equals("xls")) {
wb = new HSSFWorkbook(stream);
} else if (fileType.equals("xlsx")) {
wb = new XSSFWorkbook(stream);
} else {
System.out.println("您的文档格式不正确！");
}
// 创建sheet对象
Sheet sheet1 = (Sheet) wb.getSheetAt(0);
// 循环写入行数据
int num = sheet1.getLastRowNum() + 1;
for (int i = 0; i < 5; i++) {
Row row = (Row) sheet1.createRow(num+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);
}
}
File file = new File(path + fileName + "." + fileType);
FileOutputStream fileOut = new FileOutputStream(file);
wb.write(fileOut);
fileOut.close();
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();
}
}
}