java利用poi解析excel文件
阿新 • • 發佈:2018-02-28
sheet 文件 引入 exceptio form number string lean error:
首先需要引入以下jar包
如果使用maven,需要添加兩個依賴
<dependencies> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.15</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.15-beta2</version> </dependency> </dependencies>
excel分為兩種後綴,一是xls,二是xlsx。
首先針對xls格式的excel進行解析:
public List<String[]> readExcel(File file){ List<String[]> list = new ArrayList<>(); try { HSSFWorkbook hw = new HSSFWorkbook(new FileInputStream(file)); for (int i = 0; i < hw.getNumberOfSheets(); i++) { HSSFSheet hs = hw.getSheetAt(i); if(hs.getLastRowNum()== 0) continue; for (int j = 0; j <= hs.getLastRowNum(); j++) {// HSSFRow row = hs.getRow(j); String[] array = new String[row.getLastCellNum()]; for (int k = 0; k < row.getLastCellNum(); k++) { HSSFCell cell = row.getCell(k); array[k] = this.getValue(cell); } list.add(array); } } } catch (IOException e) { e.printStackTrace(); } return list; } private String getValue(HSSFCell cell){ String value; CellType type = cell.getCellTypeEnum(); switch (type) { case STRING: value = cell.getStringCellValue(); break; case BLANK: value = ""; break; case BOOLEAN: value = cell.getBooleanCellValue() + ""; break; case NUMERIC: value = cell.getNumericCellValue() + ""; break; case FORMULA: value = cell.getCellFormula(); break; case ERROR: value = "非法字符"; break; default: value = ""; break; } return value; }
對於xlsx格式的excel,與上者的區別在於將HSSF***換成XSSF***,樣例如下:
public List<String[]> readExcel(File file){ List<String[]> list = new ArrayList<>(); try { XSSFWorkbook xw = new XSSFWorkbook(new FileInputStream(file)); for (int i = 0; i < xw.getNumberOfSheets(); i++) { XSSFSheet xs = xw.getSheetAt(i); if(xs.getLastRowNum() == 0) continue; for (int j = 0; j <= xs.getLastRowNum(); j++) { XSSFRow row = xs.getRow(j); String[] array = new String[row.getLastCellNum()]; for (int k = 0; k <= row.getLastCellNum(); k++) { XSSFCell cell = row.getCell(k); if(cell == null) continue; array[k] = this.getValue(cell); } list.add(array); } } } catch (IOException e) { e.printStackTrace(); } return list; } private String getValue(XSSFCell cell){ String value; CellType type = cell.getCellTypeEnum(); switch (type) { case STRING: value = cell.getStringCellValue(); break; case BLANK: value = ""; break; case BOOLEAN: value = cell.getBooleanCellValue() + ""; break; case NUMERIC: value = cell.getNumericCellValue() + ""; break; case FORMULA: value = cell.getCellFormula(); break; case ERROR: value = "非法字符"; break; default: value = ""; break; } return value; }
java利用poi解析excel文件