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  • poi.jar处理excel表

    package anaxls;
    import java.io; import java.util; import org.apache.poi;
    public class Anaxls { public static void main(String[] args) { Workbook wb =null; Sheet sheet = null; Row row = null; String list[] = new String();
    String cellData = null;
    String filePath = "C:\UAT1&UAT2.xlsx"; String columns[] = {"英文简称","系统名称","UAT1 IP"}
    wb = readExcel(filePath); if(wb != null){ //用来存放表中数据 list.(); //获取第一个sheet sheet = wb.getSheetAt(0); //获取最大行数 int rownum = sheet.getPhysicalNumberOfRows(); //获取第一行 row = sheet.getRow(0); //获取最大列数 int colnum = row.getPhysicalNumberOfCells(); for (int i = 1; i<rownum; i++) { Map<String,String> map = new LinkedHashMap<String,String>(); row = sheet.getRow(i); if(row !=null){ for (int j=0;j<colnum;j++){ cellData = (String) getCellFormatValue(row.getCell(j)); map.put(columns[j], cellData); } }else{ break; } list.add(map); } } //遍历解析出来的list for (Map<String,String> map : list) { for (Entry<String,String> entry : map.entrySet()) { System.out.print(entry.getKey()+":"+entry.getValue()+","); } System.out.println(); } } //读取excel public static Workbook readExcel(String filePath){ Workbook wb = null; if(filePath==null){ return null; } String extString = filePath.substring(filePath.lastIndexOf(".")); InputStream is = null; try { is = new FileInputStream(filePath); if(".xls".equals(extString)){ return wb = new HSSFWorkbook(is); }else if(".xlsx".equals(extString)){ return wb = new XSSFWorkbook(is); }else{ return wb = null; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return wb; } public static Object getCellFormatValue(Cell cell){ Object cellValue = null; if(cell!=null){ //判断cell类型 switch(cell.getCellType()){ case Cell.CELL_TYPE_NUMERIC:{ cellValue = String.valueOf(cell.getNumericCellValue()); break; } case Cell.CELL_TYPE_FORMULA:{ //判断cell是否为日期格式 if(DateUtil.isCellDateFormatted(cell)){ //转换为日期格式YYYY-mm-dd cellValue = cell.getDateCellValue(); }else{ //数字 cellValue = String.valueOf(cell.getNumericCellValue()); } break; } case Cell.CELL_TYPE_STRING:{ cellValue = cell.getRichStringCellValue().getString(); break; } default: cellValue = ""; } }else{ cellValue = ""; } return cellValue; } }
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  • 原文地址:https://www.cnblogs.com/Nonstopcoding/p/11084294.html
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