public class PoiExpExcel{
public static void main(String[] args){
String[] title = {"id","name","sex"};//定义一个表头
//创建Excel工作簿
HSSFWorkbook workbook = new HSSFWorkbook();
//创建一个工作表sheet
HSSFSheet sheet =workbook.createSheet();
//创建第一行
HSSRow row = sheet.createRow(0);
HssFCell cell = null;
//插入第一行数据id,name,sex
for(int i = 0; i < title.length; i++){
cell = row.createCell(i);
cell.setCellValue(title[i]);
}
//追加数据
for(int i = 1; i < 10; i++){
HSSFRow nextrow = sheet.createRow(i);
HSSFCell cell2 = nextrow.createCell(0);
cell2.setCellValue("a" + 1);
cell2 = nextrow.createCell(1);
cell2.setCellValue("user" + i);
cell2 = nextrow.createCell(2);
cell2.setCellValue("男");
}
// 创建一个文件
File file = new File("e:/poi_test");
file.createNewFile();//捕获异常
//讲Excel内容存盘
FileOutputStream stream = FileUtils.opentOutputStream(file);
workbook.write(stream);
workbook.close();
}
}
poi 解析Excel
public class PoiReadExcel{
public static void main(String[] args){
//需要解析的Excel文件
File file = new File("e:/poi_test");
HSSFWorkbook workbook = new HSSFWorkbook(FileUtils.opentInputSteam(file));//捕获异常
//获取第一个工作表
HSSFSheet sheet = workbook.getSheet("sheet0");//传的是sheet表的名称
// 另一种方式获取sheet
//读取默认的第一个工作表sheet
// HSSFSheet sheet = workbook.getSheetAt(0);
//读取工作表中的数据
int firstRowNum = 0;
//获取sheet中的最后一行行号
int lastRowNum = sheet.getLastRowNum();
for(int i = firstRowNum; i <= lastRowNum; i++){
HSSFRow row = sheet.getRow(0);
//获取当前最后单元格列号
int lastCellNum = row.getLastCellNum();
for(int j = 0; j < lastCellNum; j++){
HSSFCell cell = row.getCell(j);
String value = cell.getStringCellValue();
System.out.print(value + " ");
}
System.out.println();
}
}
}
