POI-Excel写
1、首先可以创建一个普通的maven项目
<!-- 导入poi依赖,对excel 2003的支持依赖(xls) -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>5.0.0</version>
</dependency>
<!-- poi对于excel 2007的支持依赖(xlsx) -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>5.0.0</version>
</dependency>
import org.apache.poi.ss.usermodel.*; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io.File; import java.io.FileInputStream; import java.io.IOException; //public class ReadFileExample { // public static void main(String[] args) { // String fileName = "Forster/example.txt"; // 要读取的文件名 // // try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) { // String line; // // while ((line = reader.readLine()) != null) { // System.out.println(line); // 输出每行内容 // } // } catch (IOException e) { // e.printStackTrace(); // } // } //} public class ReadFileExample { public static void main(String[] args) { String excelFilePath = "Forster/file.xlsx"; try (FileInputStream inputStream = new FileInputStream(new File(excelFilePath)); Workbook workbook = new XSSFWorkbook(inputStream)) { Sheet sheet = workbook.getSheetAt(0); // 读取第一个工作表 for (Row row : sheet) { // 迭代每一行 for (Cell cell : row) { // 迭代每一列 // 根据不同数据类型,以字符串形式输出数据 switch (cell.getCellType()) { case STRING: System.out.print(cell.getStringCellValue() + "\t"); break; case NUMERIC: System.out.print(cell.getNumericCellValue() + "\t"); break; case BOOLEAN: System.out.print(cell.getBooleanCellValue() + "\t"); break; case FORMULA: System.out.print(cell.getCellFormula() + "\t"); break; default: break; } } System.out.println(); // 换行,表示一行数据结束 } } catch (IOException e) { e.printStackTrace(); } } }
需要的包
参考文档 https://zhuanlan.zhihu.com/p/603180908
标签:break,java,读取,excel,System,cell,poi,new,out
From: https://www.cnblogs.com/weimeizhizuo/p/18112970