Question

java怎么获取excel中的数据

Answer 1

使用java poi
package webservice;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class ExcelController {

@SuppressWarnings("deprecation")
public void excel() throws FileNotFoundException, IOException{

String filename = "d:\\excel.xls";
HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(filename));
//按名引用excel工作表
// HSSFSheet sheet = workbook.getSheet("JSP");
//用式获取excel工作表采用工作表索引值
HSSFSheet sheet = workbook.getSheetAt(0);
HSSFRow row ;
HSSFCell cell1;
int rows=sheet.getLastRowNum();
for(int icount=0;icount<rows;icount++){
row = sheet.getRow(icount);
int line=row.getPhysicalNumberOfCells();
for(int j=0;j<line;j++){
cell1= row.getCell(j);
System.out.println(cell1+"--"+icount+"---"+j);
}
}
//打印读取值
// System.out.println(cell.getStringCellValue());

//新建输流
FileOutputStream fout = new FileOutputStream(filename); //PS：filename 另存路径处理直接写入模版文件
//存盘
workbook.write(fout);
fout.flush();
//结束关闭
fout.close();

}

public HSSFCell getCell(HSSFRow row, int index) {

// 取发期单元格
HSSFCell cell = row.getCell(index);

// 单元格存
if (cell == null) {

// 创建单元格
cell = row.createCell(index);
}

// 返单元格
return cell;
}

public static void main(String[] args) {
ExcelController ec = new ExcelController();
try {
ec.excel();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

Answer 2

添加spire.xls.jar为依赖，使用下面的代码

1. import com.spire.xls.*;

2. 
   

3. public class ReadExcel {

4.     public static void main(String[] args) {

5. 
   

6.         //创建Workbook对象

7.         Workbook wb = new Workbook();

8.         //加载一个Excel文档

9.         wb.loadFromFile("C:\\Users\\Administrator\\Desktop\\test.xlsx");

10.         //获取第一个工作表

11.         Worksheet sheet = wb.getWorksheets().get(0);

12.         //遍历工作表的每一行

13.         for (int i = 1; i < sheet.getLastRow() + 1; i++) {

14.             //遍历工作的每一列

15.             for (int j = 1; j < sheet.getLastColumn() + 1; j++) {

16.                 //输出指定单元格的数据

17.                 System.out.print(sheet.get(i,j).getText());

18.                 System.out.print("\t");

19.             }

20.             System.out.print("\n");

21.         }

22.     }

23. }