先貼出所需的jar包:
1.poi-3.17-beta1.jar
2.poi-ooxml-3.17-beta1.jar
3.poi-ooxml-schemas-3.17-beta1.jar
4.commons-collections4-4.1.jar
5.xmlbeans-2.6.0.jar
jar包以及示例excel文件下載地址:鏈接:https://pan.baidu.com/s/1G7zyhPp-Imi8bKU9yn35zA 密碼:m1qt
- 話不多說,直接上代碼
package parseexcel; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DateUtil; 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 ParseExcelTest { public static void main(String[] args){ printExcel(); } public static void printExcel(){ Workbook wb =null; Sheet sheet = null; Row row = null; List<Map<String,String>> list = null; String cellData = null; String filePath = "D:\\test.xlsx"; String columns[] = {"姓名","打卡日期","上班打卡時間","下班打卡時間"}; wb = readExcel(filePath); if(wb != null){ //用來存放表中數據 list = new ArrayList<Map<String,String>>(); //獲取第一個sheet sheet = wb.getSheetAt(0); //獲取最大行數 int rownum = sheet.getPhysicalNumberOfRows(); //獲取第一行 row = sheet.getRow(0); //獲取最大列數 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); } } //遍歷解析出來的list for (Map<String,String> map : list) { for (Entry<String,String> entry : map.entrySet()) { System.out.print(entry.getKey()+":"+entry.getValue()+","); } System.out.println(); } } //讀取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){ //判斷cell類型 switch(cell.getCellType()){ case Cell.CELL_TYPE_NUMERIC:{ cellValue = String.valueOf(cell.getNumericCellValue()); break; } case Cell.CELL_TYPE_FORMULA:{ //判斷cell是否為日期格式 if(DateUtil.isCellDateFormatted(cell)){ //轉換為日期格式YYYY-mm-dd cellValue = cell.getDateCellValue(); }else{ //數字 cellValue = String.valueOf(cell.getNumericCellValue()); } break; } case Cell.CELL_TYPE_STRING:{ cellValue = cell.getRichStringCellValue().getString(); break; } default: cellValue = ""; } }else{ cellValue = ""; } return cellValue; } }
- 主要API說明
1)import org.apache.poi.ss.usermodel.Workbook,對應Excel文檔;
2)import org.apache.poi.hssf.usermodel.HSSFWorkbook,對應xls格式的Excel文檔;
3)import org.apache.poi.xssf.usermodel.XSSFWorkbook,對應xlsx格式的Excel文檔;
4)import org.apache.poi.ss.usermodel.Sheet,對應Excel文檔中的一個sheet;
5)import org.apache.poi.ss.usermodel.Row,對應一個sheet中的一行;
6)import org.apache.poi.ss.usermodel.Cell,對應一個單元格。
- Excel示例以及運行結果
excel示例
運行結果