public class ImportExcel {
private static Logger log = LoggerFactory.getLogger(ImportExcel.class);
/**
* 工作薄对象
**/
private Workbook wb;
/**
* 工作表对象
**/
private Sheet sheet;
/**
* 标题行号
*/
private int headerNum;
/**
* 构造函数
* @param path 导入文件，读取第1个工作表
* @param headerNum 标题行号，数据行等于标题行号+1
* @throws InvalidFormatException
* @throws IOException
*/
public ImportExcel(String fileName, int headerNum)
throws InvalidFormatException, IOException {
this(new File(fileName), headerNum);
}
/**
* 构造函数
* @param path 导入文件对象，读取第1个工作表
* @param headerNum 标题行号，数据行等于标题行号+1
* @throws InvalidFormatException
* @throws IOException
*/
public ImportExcel(File file, int headerNum)
throws InvalidFormatException, IOException {
this(file, headerNum, 0);
}
/**
* 构造函数
* @param path 导入文件
* @param headerNum 标题行号，数据行等于标题行号+1
* @param sheetIndex 工作表编号，以0开始
* @throws InvalidFormatException
* @throws IOException
*/
public ImportExcel(String fileName, int headerNum, int sheetIndex)
throws InvalidFormatException, IOException {
this(new File(fileName), headerNum, sheetIndex);
}
/**
* 构造函数
* @param path 导入文件对象
* @param headerNum 标题行号，数据行等于标题行号+1
* @param sheetIndex 工作表编号，以0开始、
* @throws InvalidFormatException
* @throws IOException
*/
public ImportExcel(File file, int headerNum, int sheetIndex)
throws InvalidFormatException, IOException {
this(file.getName(), new FileInputStream(file), headerNum, sheetIndex);
}
/**
* 构造函数
* @param file 导入文件对象
* @param headerNum 标题行号，数据行等于标题行号+1
* @param sheetIndex 工作表编号，以0开始、
* @throws InvalidFormatException
* @throws IOException
*/
/**
* 构造函数
* @param path 导入文件对象
* @param headerNum 标题行号，数据行等于标题行号+1
* @param sheetIndex 工作表编号，以0开始、
* @throws InvalidFormatException
* @throws IOException
*/
public ImportExcel(String fileName, InputStream is, int headerNum, int sheetIndex)
throws InvalidFormatException, IOException {
if (StringUtils.isBlank(fileName)){
throw new RuntimeException("导入文档为空!");
}else if(fileName.toLowerCase().endsWith("xls")){
this.wb = new HSSFWorkbook(is);
}else if(fileName.toLowerCase().endsWith("xlsx")){
this.wb = new XSSFWorkbook(is);
}else{
throw new RuntimeException("文档格式不正确?");
}
if (this.wb.getNumberOfSheets()<sheetIndex){
throw new RuntimeException("文档中没有工作表!");
}
this.sheet = this.wb.getSheetAt(sheetIndex);
this.headerNum = headerNum;
log.debug("Initialize success.");
}
/**
* 获取行对象
* @param rownum
* @return
*/
public Row getRow(int rownum){
return this.sheet.getRow(rownum);
}
/**
* 获取数据行号
* @return
*/
public int getDataRowNum(){
return headerNum+1;
}
/**
* 获取工作表中的最后一行的行号，以0开始
* @return
*/
public int getLastDataRowNum(){
return this.sheet.getLastRowNum();
}
/**
* 获取一行记录总的列数
* @return
*/
public int getLastCellNum(){
return this.getRow(headerNum).getLastCellNum();
}
/**
* 获取单元格的值
* @param row 获取的行
* @param column 获取单元格列号
* @return 单元格的值
*/
public Object getCellValue(Row row, int column){
Object val = "";
try{
Cell cell = row.getCell(column);
if (cell != null){
if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
val = cell.getNumericCellValue();
}else if (cell.getCellType() == Cell.CELL_TYPE_STRING){
val = cell.getStringCellValue();
}else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA){
val = cell.getCellFormula();
}else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){
val = cell.getBooleanCellValue();
}else if (cell.getCellType() == Cell.CELL_TYPE_ERROR){
val = cell.getErrorCellValue();
}
}
}catch (Exception e) {
return val;
}
return val;
}
/**
* 导入测试
*/
public static void main(String[] args) throws Throwable {
ImportExcel ei = new ImportExcel("import.xls", 0);
System.out.println(ei.getLastDataRowNum());
System.out.println(ei.getDataRowNum());
for (int i = ei.getDataRowNum(); i <= ei.getLastDataRowNum(); i++) {
Row row = ei.getRow(i);
System.out.println("Row num:"+i);
for (int j = 0; j < ei.getLastCellNum(); j++) {
Object val = ei.getCellValue(row, j);
System.out.print(val+", ");
}
System.out.print("\n");
}
}
}
java poi reader