java poi 操作excel，xssf 读excel 2007，将某些单元格为固定值

import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; //import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io.*; /** * Created by n on 2015/4/29. */ public class InsertInfoToExcel { //该方法判断excel版本 static Workbook openWorkbook(InputStream in, String filename) throws IOException { Workbook wb = null; if (filename.endsWith(".xlsx")) { wb = new XSSFWorkbook(in);//Excel 2007 } else { wb = (Workbook) new HSSFWorkbook(in);//Excel 2003 } return wb; } //该方法处理excel的数据，把第1列标记为id（递增），第9列标记为结果（默许是PASS），第10列标记为姓名 public static void setExcelData(String fileName) throws Exception { InputStream in = new FileInputStream(fileName); //创建输入流 Workbook wb = openWorkbook(in, fileName);// 获得Excel文件对象 Sheet sheet = wb.getSheetAt(0);// 获得文件的指定工作表m 默许的第1个Row row = null; int totalRows = sheet.getLastRowNum(); // 总行数 int totalCells = sheet.getRow(0).getLastCellNum();//总列数，根据第1行得来的 System.out.println("列数:" + totalCells + " 行数：" + totalRows); //顺次获得每行 for (int i = 1; i <= sheet.getLastRowNum(); i++) { XSSFRow row = (XSSFRow) sheet.getRow(i);// 获得行对象 if (row == null) {// 如果为空，不处理 continue; } //将第0列的标记为id，递增。遇到空的先不管，跳过 if (row.getCell(0) != null) { Cell cellIndex = row.getCell(0); System.out.print(cellIndex.getNumericCellValue()); cellIndex.setCellValue(i); } else { XSSFCell cellIndex = row.createCell(0); cellIndex.setCellValue(i); } //将第9列标记为测试结果，遇到空的就标记为PASS，非空的不管。 if (row.getCell(9) == null) { XSSFCell cellResult = row.createCell(9); System.out.print(cellResult.getStringCellValue()); cellResult.setCellValue("PASS"); } //将第10列的标记为测试人员的名字。不论是不是空都标记为名字。 if (row.getCell(10) != null) { XSSFCell cellName = row.getCell(10); // System.out.print(cellName.getStringCellValue()); cellName.setCellValue("aashen"); } else { XSSFCell cellName = row.createCell(10); cellName.setCellValue("aashen"); } } //写入数据，关闭 OutputStream out = new FileOutputStream(fileName); wb.write(out); in.close(); out.close(); } public static void main(String[] args) throws Exception { // String fileName="E:"+ File.separator+"hello.txt"; String fileName = "E://hi.xlsx"; setExcelData(fileName); // File f=new File(fileName); // if(f.exists()) // System.out.println("new file successfully"); // Writer out =new FileWriter(f); // String str="hello"; // out.write(str); // out.close(); } }