java创建xls文件放到指定文件夹中实现方式

xmlCopy code
<!-- Apache POI依赖 -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version>
</dependency>

javaCopy code
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileOutputStream;
import java.io.IOException;
public class CreateExcelFile {
    public static void main(String[] args) {
        // 创建工作簿
        Workbook workbook = new XSSFWorkbook();
        // 创建工作表
        Sheet sheet = workbook.createSheet("Sheet1");
        // 创建行，并设置行号
        Row row = sheet.createRow(0);
        // 创建单元格，并设置单元格内容
        Cell cell = row.createCell(0);
        cell.setCellValue("Hello");
        // 保存文件
        try (FileOutputStream fileOut = new FileOutputStream("指定文件夹的路径/文件名.xls")) {
            workbook.write(fileOut);
            System.out.println("XLS文件创建成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 清理资源
        workbook.close();
    }
}

javaCopy code
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class CreateSalesOrderExcel {
    public static void main(String[] args) {
        // 创建销售订单数据
        List<SalesOrder> salesOrders = createSalesOrders();
        
        // 创建工作簿
        Workbook workbook = new XSSFWorkbook();
        
        // 创建工作表
        Sheet sheet = workbook.createSheet("销售订单");
        
        // 创建表头
        Row headerRow = sheet.createRow(0);
        headerRow.createCell(0).setCellValue("订单编号");
        headerRow.createCell(1).setCellValue("订单日期");
        headerRow.createCell(2).setCellValue("客户姓名");
        headerRow.createCell(3).setCellValue("产品名称");
        headerRow.createCell(4).setCellValue("数量");
        headerRow.createCell(5).setCellValue("单价");
        headerRow.createCell(6).setCellValue("总价");
        
        // 填充数据
        int rowNumber = 1;
        for (SalesOrder salesOrder : salesOrders) {
            Row row = sheet.createRow(rowNumber++);
            row.createCell(0).setCellValue(salesOrder.getOrderNumber());
            row.createCell(1).setCellValue(salesOrder.getOrderDate());
            row.createCell(2).setCellValue(salesOrder.getCustomerName());
            row.createCell(3).setCellValue(salesOrder.getProductName());
            row.createCell(4).setCellValue(salesOrder.getQuantity());
            row.createCell(5).setCellValue(salesOrder.getUnitPrice());
            row.createCell(6).setCellValue(salesOrder.getTotalPrice());
        }
        
        // 保存文件
        try (FileOutputStream fileOut = new FileOutputStream("指定文件夹的路径/销售订单报表.xlsx")) {
            workbook.write(fileOut);
            System.out.println("Excel文件创建成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        // 清理资源
        workbook.close();
    }
    
    private static List<SalesOrder> createSalesOrders() {
        // 模拟一些销售订单数据
        List<SalesOrder> salesOrders = new ArrayList<>();
        salesOrders.add(new SalesOrder("20240001", "2024-02-01", "张三", "产品1", 10, 50.0));
        salesOrders.add(new SalesOrder("20240002", "2024-02-02", "李四", "产品2", 5, 100.0));
        salesOrders.add(new SalesOrder("20240003", "2024-02-03", "王五", "产品1", 8, 50.0));
        salesOrders.add(new SalesOrder("20240004", "2024-02-04", "赵六", "产品3", 2, 150.0));
        return salesOrders;
    }
    
    // 销售订单类
    private static class SalesOrder {
        private String orderNumber;
        private String orderDate;
        private String customerName;
        private String productName;
        private int quantity;
        private double unitPrice;
        
        // 构造函数、getter和setter省略
        
        public double getTotalPrice() {
            return quantity * unitPrice;
        }
    }
}