读取指定excel，修改并某个值并另存到指定路径

Posted 2020-09-27

HSSFWorkBook是解析excel2007以前的版本（xls）
之后的版本使用XSSFWrokBook（xlsx）

附：处理excel2007之后的版本代码：

package gbyp.autoQuery.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.channels.FileChannel;
import java.util.Date;
import java.util.Iterator;

import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFHyperlink;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import xsf.IContextDictionary;
import xsf.data.DBManager;
import xsf.data.DataRow;
import xsf.data.DataTable;
import xsf.data.Sql;
import xsf.web.HttpContext;
import xsf.web.IAction;

public class ExcelExport {

    public static void main(String[] args) {
        ExcelExport ee = new ExcelExport();
        ee.writeExcel2();
    }

    public void writeExcel2() {
        // 声明excel对象
        XSSFWorkbook wb = null;
        // 声明poi流
        // POIFSFileSystem fs=null;
        // 写读取的文件路径
        String path = "E:/需要完善的项目清单.xlsx";
        try {

            // 创建文件流 创建excell对象
            wb = new XSSFWorkbook(new FileInputStream(path));

            // 获得工作薄， 得到工作表
            XSSFSheet sheet = wb.getSheetAt(0);

            boolean isOne = true;
            for (Iterator<Row> iter = sheet.rowIterator(); iter.hasNext();) {
                // 得到行
                Row row = iter.next();
                // 迭代列
                // 循环每一行的所有列
                int i = 0;
                for (Iterator<Cell> cellIter = row.cellIterator(); cellIter
                        .hasNext();) {
                    // 得到列对象
                    Cell cell = cellIter.next();
                    if (i == 1) {
                        String content = cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC ? cell
                                .getNumericCellValue() + ""
                                : cell.getStringCellValue();
                        if (!content.equals("项目名称")) {
                            //数据库取值并赋值
                            cell.setCellValue("****项目");
                        }
                    }

                    i++;
                }
                if (isOne) {
                    isOne = false;
                }
            }

            String path2 = "E:/需要完善的项目清单2.xlsx";
            // 创建输出流
            OutputStream out = new FileOutputStream(path2);
            // 将数据写入文件
            wb.write(out);
            // 关闭文件
            out.close();

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

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附：处理excel2007之前版本代码：

package gbyp.autoQuery.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.channels.FileChannel;
import java.util.Date;
import java.util.Iterator;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFHyperlink;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.util.CellRangeAddress;

import xsf.IContextDictionary;
import xsf.data.DBManager;
import xsf.data.DataRow;
import xsf.data.DataTable;
import xsf.data.Sql;
import xsf.web.HttpContext;
import xsf.web.IAction;

public class ExcelExport {

    public static void main(String[] args) {
        ExcelExport ee = new ExcelExport();
        ee.writeExcel2();
    }

    public void writeExcel2() {
        // 声明excel对象
        HSSFWorkbook wb = null;
        // 声明poi流
        POIFSFileSystem fs = null;
        // 写读取的文件路径
        String path = "E:/需要完善的项目清单.xls";
        try {

            // 设置要读取的文件路径
            // 创建文件流
            fs = new POIFSFileSystem(new FileInputStream(path));

            // HSSFWorkBook相当于一个excel文件，HSSFWorkBook是解析excel2007以前的版本（xls）
            // 之后的版本使用XSSFWrokBook（xlsx）
            // 创建excell对象
            wb = new HSSFWorkbook(fs);

            // 获得工作薄
            // 得到工作表
            HSSFSheet sheet = wb.getSheetAt(0);

            boolean isOne = true;

            for (Iterator<Row> iter = sheet.rowIterator(); iter.hasNext();) {
                // 得到行
                Row row = iter.next();
                // 迭代列
                // 循环每一行的所有列
                int i = 0;
                for (Iterator<Cell> cellIter = row.cellIterator(); cellIter.hasNext();) {
                    // 得到列对象
                    Cell cell = cellIter.next();
                    if (i == 1) {
                        String content = cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC ? cell.getNumericCellValue() + "": cell.getStringCellValue();
                        if(!content.equals("项目名称")){
                            cell.setCellValue("****项目");
                        }
                    }

                    i++;
                }
                if (isOne) {

                    isOne = false;
                }
            }

            String path2 = "E:/需要完善的项目清单2.xls";
            // 创建输出流
            OutputStream out = new FileOutputStream(path2);
            // 将数据写入文件
            wb.write(out);
            // 关闭文件
            out.close();

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

View Code