java poi导入EXCEL

import java.io.BufferedInputStream; import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException; import java.io.IOException;

import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFDateUtil; 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.poifs.filesystem.POIFSFileSystem;

public class TextExcel { public static void main(String[] args) { String path=\"d://model.xls\";//文件路径 try { File files = new File(path); String[][] result = getData(files, 1); if (result != null) { int rowLength = result.length; for (int i = 0; i < rowLength; i++) { for (int j = 0; j < result[i].length; j++) { System.out.println(result[i][j]+\"单元格ID:\"+i+\" \"+j); } System.out.println(); } } } catch (Exception e) { e.printStackTrace(); } } /** * 读取EXCEL * * @param firstrow 从第几行开始读取 * @return 读取后返回数组 */ @SuppressWarnings(\"deprecation\") public static String[][] getData(File file, int firstrow) throws FileNotFoundException, IOException { List result = new ArrayList(); int rowSize = 0; BufferedInputStream in = new BufferedInputStream(new FileInputStream(

file)); POIFSFileSystem fs = new POIFSFileSystem(in); HSSFWorkbook wb = new HSSFWorkbook(fs); HSSFCell cell = null; for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) { HSSFSheet st = wb.getSheetAt(sheetIndex); for (int rowIndex = firstrow; rowIndex <= st.getLastRowNum(); rowIndex++) { HSSFRow row = st.getRow(rowIndex); if (row == null) { continue; } int tempRowSize = row.getLastCellNum() + 1; if (tempRowSize > rowSize) { rowSize = tempRowSize; } String[] values = new String[rowSize]; Arrays.fill(values, \"\"); boolean hasValue = false; for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++) { String value = \"\"; cell = row.getCell(columnIndex); if (cell != null) { switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING://读取的格式为字符串 value = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC://读取的格式为数组 //如果格式为日期格式，自定义格式输出 if (HSSFDateUtil.isCellDateFormatted(cell)) { Date date = cell.getDateCellValue(); if (date != null) { value = new SimpleDateFormat(\"yyyy-MM-dd\") .format(date); } else { value = \"\"; } } else { //如果格式为数值，自定义格式输出 value = new DecimalFormat(\"0.00\").format(cell .getNumericCellValue()); } break; case HSSFCell.CELL_TYPE_FORMULA: // 导入时如果为公式生成的数据则无值 value = \"\"; break; // 导入时如果为空 case HSSFCell.CELL_TYPE_BLANK: break; case HSSFCell.CELL_TYPE_ERROR: value = \"\"; break;

}

}

}

// 导入时如果为BOOLEAN型 自定义格式输出 case HSSFCell.CELL_TYPE_BOOLEAN: value = (cell.getBooleanCellValue() == true ? \"Y\" : \"N\"); break; default: value = \"\"; }

values[columnIndex] = rightTrim(value); hasValue = true; }

if (hasValue) { result.add(values); } }

in.close(); String[][] returnArray = new String[result.size()][rowSize]; for (int i = 0; i < returnArray.length; i++) { returnArray[i] = (String[]) result.get(i); } return returnArray; }

return null;

/**

* 去掉字符串右边的空格 *

* @param str 要处理的字符串 * @return 处理后的字符串 */

public static String rightTrim(String str) { if (str == null) { return \"\"; } int length = str.length(); for (int i = length - 1; i >= 0; i--) { if (str.charAt(i) != 0x20) { break; } length--; } return str.substring(0, length); }