Excel--05--读Excel----添加新行数

Posted 2021-10-29 高高for 循环

需求

原Excel-----01.xlsx

模板 temp

具体需求:

1. 读以上Excel ,添加新的行数,并且自定义内容.

2. 没定义的 按模板默认来

代码

依赖:

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>4.1.0</version>
        </dependency>

代码实现:

工厂模式 适配EXCEl 2003 ,2007

Workbook workbook = WorkbookFactory.create(InputStream);

package com.cy.io;

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

public class Excel01 {
    public static void parse(String srcPath, String dirPath) throws IOException {

        Path srcFile = Paths.get(srcPath);
        Path dirFile = Paths.get(dirPath);
        Files.deleteIfExists(dirFile);
        Files.copy(srcFile, dirFile, StandardCopyOption.COPY_ATTRIBUTES);
        FileInputStream InputStream = new FileInputStream(new File(dirPath));
        //工厂模式 适配EXCEl 2003 ,2007
        Workbook workbook = WorkbookFactory.create(InputStream);

        Sheet moveSheet = workbook.getSheet("电影");
        Sheet musicSheet = workbook.getSheet("音乐");
        Sheet tempSheet = workbook.getSheet("temp");

        //获取最后一行
        int last1 = moveSheet.getLastRowNum();
        Row moveRow = moveSheet.createRow(last1 + 1);

        int last2 = musicSheet.getLastRowNum();
        Row musicRow = musicSheet.createRow(last2 + 1);

        //模板1
        Row tempRow0 = tempSheet.getRow(0);
        //模板2
        Row tempRow1 = tempSheet.getRow(1);


        for (int K = 0; K < tempRow0.getPhysicalNumberOfCells(); K++) {
            //设置样式,默认对比模板的样式
            moveRow.setRowStyle(tempRow0.getRowStyle());
            musicRow.setRowStyle(tempRow1.getRowStyle());

            Cell tempCell0 = tempRow0.getCell(K);
            Cell tempCell1 = tempRow1.getCell(K);

            Cell moveCell1 = moveRow.createCell(K);
            Cell musicCell1 = musicRow.createCell(K);

            CellType cellType = tempCell0.getCellType();

            //设置cell样式
            moveCell1.setCellStyle(tempCell0.getCellStyle());
            musicCell1.setCellStyle(tempCell1.getCellStyle());



            switch (cellType) {
                case STRING:
                    switch (K) {
                        case 0:
                            //自定义
                            moveCell1.setCellValue("慧慧");
                            //使用模板
                            musicCell1.setCellValue(tempCell1.toString());
                            break;
                        case 1:
                            moveCell1.setCellValue("电视剧");
                            musicCell1.setCellValue(tempCell1.toString());
                            break;
                        case 2:
                            moveCell1.setCellValue("29");
                            musicCell1.setCellValue(tempCell1.toString());
                            break;

                        case 3:
                            moveCell1.setCellValue("....");
                            musicCell1.setCellValue(tempCell1.toString());
                            break;

                        default:
                            //默认使用模板cell填充
                            moveCell1.setCellValue(tempCell1.toString());
                            musicCell1.setCellValue(tempCell1.toString());
                            break;

                    }
                    break;
                case NUMERIC:
                    double numericCellValue = tempCell0.getNumericCellValue();
                    double numericCellValue1 = tempCell1.getNumericCellValue();
                    moveCell1.setCellValue(numericCellValue);
                    musicCell1.setCellValue(numericCellValue1);
                    break;
                default:
                    break;
            }

        }

        FileOutputStream outputStream = new FileOutputStream(dirPath);
        workbook.write(outputStream);
        workbook.close();
        InputStream.close();
        outputStream.close();
    }
}

测试;

    public static void main(String[] args) throws IOException {
        String srcPath = "C:\\\\Users\\\\gaogao\\\\Desktop\\\\新建文件夹\\\\01.xlsx";
        String dirPath = "C:\\\\Users\\\\gaogao\\\\Desktop\\\\新建文件夹\\\\02.xlsx";
        parse(srcPath, dirPath);
    }