JAVA解析Excel表格並讀取相關內容

直接看代碼吧

package com.henu.zhao;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
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.XSSFWorkbook;

public class ParsExcelUtils {
  public static List parsexcel(String url){
      int totalRows = 0;
      int totalCells = 0;
      List<List<String>> dataLst = new ArrayList<List<String>>();
      InputStream is = null;
      try
        {
            if (!validateExcel(url))
            {
            }
            boolean isExcel2003 = true;
            if (isExcel2007(url))
            {
                isExcel2003 = false;
            }
            File file = new File(url);
            is = new FileInputStream(file);
            dataLst = read(is, isExcel2003);
            is.close();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }
        finally
        {
            if (is != null)
            {
                try
                {
                    is.close();
                }
                catch (IOException e)
                {
                    is = null;
                    e.printStackTrace();
                }
            }
        }
        /** 返回最後讀取的結果 */
    return dataLst;

  }
  //讀
  public static List<List<String>> read(InputStream inputStream, boolean isExcel2003)
    {
        List<List<String>> dataLst = null;
        try
        {
            /** 根據版本選擇創建Workbook的方式 */
            Workbook wb = null;

            if (isExcel2003)
            {
                wb = new HSSFWorkbook(inputStream);
            }
            else
            {
                wb = new XSSFWorkbook(inputStream);
            }
            dataLst = read(wb);
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        return dataLst;
    }
  //讀wb
  private static List<List<String>> read(Workbook wb)
    {
        List<List<String>> dataLst = new ArrayList<List<String>>();
        /** 得到第一個shell */
        Sheet sheet = wb.getSheetAt(0);
        /** 得到Excel的行數 */
        int totalRows = sheet.getPhysicalNumberOfRows();
        /** 得到Excel的列數 */
        int totalCells = 0;
        if (totalRows >= 1 && sheet.getRow(0) != null)
        {
             totalCells = sheet.getRow(0).getPhysicalNumberOfCells();
        }
        /** 循環Excel的行 */
        for (int r = 0; r < totalRows; r++)
        {
            Row row = sheet.getRow(r);
            if (row == null)
            {
                continue;
            }
            List<String> rowLst = new ArrayList<String>();
            /** 循環Excel的列 */
            for (int c = 0; c < totalCells; c++)
            {
                Cell cell = row.getCell(c);
                String cellValue = "";
                if (null != cell)
                {
                    // 以下是判斷數據的類型
                    switch (cell.getCellType())
                    {
                    case HSSFCell.CELL_TYPE_NUMERIC: // 數字
                        cellValue = cell.getNumericCellValue() + "";
                        break;
                    case HSSFCell.CELL_TYPE_STRING: // 字符串
                        cellValue = cell.getStringCellValue();
                        break;
                    case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean
                        cellValue = cell.getBooleanCellValue() + "";
                        break;
                    case HSSFCell.CELL_TYPE_FORMULA: // 公式
                        cellValue = cell.getCellFormula() + "";
                        break;
                    case HSSFCell.CELL_TYPE_BLANK: // 空值
                        cellValue = "";
                        break;
                    case HSSFCell.CELL_TYPE_ERROR: // 故障
                        cellValue = "非法字符";
                        break;
                    default:
                        cellValue = "未知類型";
                        break;
                    }
                }
                rowLst.add(cellValue);
            }
            dataLst.add(rowLst);
        }
        return dataLst;
    }

  //驗證excel合法性
  public static boolean validateExcel(String filePath)
    {
        if (filePath == null || !(isExcel2003(filePath) || isExcel2007(filePath)))
        {
            System.out.println("文件名不是excel格式");
            return false;
        }
        /** 檢查文件是否存在 */
        File file = new File(filePath);
        if (file == null || !file.exists())
        {
            System.out.println("文件不存在");
        return false;
        }
        return true;
    }

  //驗證格式
  public static boolean isExcel2003(String filePath)
    {
        return filePath.matches("^.+\\.(?i)(xls)$");
    }
    public static boolean isExcel2007(String filePath)
    {
        return filePath.matches("^.+\\.(?i)(xlsx)$");
    }
}

寫了一個工具類，到時候直接用List調用，就行了。支持03和07版本。

List<List<String>> list = ParsExcelUtils.parsexcel(downLoadPath);