excel java apache poi
我想用这个代码插入Excel数据到数据库。
public class Insert { public static void main( String [] args ) { String fileName="C:\\File.xls"; Vector dataHolder=read(fileName); saveToDatabase(dataHolder); } public static Vector read(String fileName) { Vector cellVectorHolder = new Vector(); try{ FileInputStream myInput = new FileInputStream(fileName); POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput); HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem); HSSFSheet mySheet = myWorkBook.getSheetAt(0); Iterator rowIter = mySheet.rowIterator(); while(rowIter.hasNext()){ HSSFRow myRow = (HSSFRow) rowIter.next(); Iterator cellIter = myRow.cellIterator(); Vector cellStoreVector=new Vector(); while(cellIter.hasNext()){ HSSFCell myCell = (HSSFCell) cellIter.next(); cellStoreVector.addElement(myCell); } cellVectorHolder.addElement(cellStoreVector); } }catch (Exception e){e.printStackTrace(); } return cellVectorHolder; } private static void saveToDatabase(Vector dataHolder) { String username=""; String password=""; for (int i=0;i<dataHolder.size(); i++){ Vector cellStoreVector=(Vector)dataHolder.elementAt(i); for (int j=0; j < cellStoreVector.size();j++){ HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j); String st = myCell.toString(); username=st.substring(0,1); password=st.substring(0); } try{ Class.forName("com.mysql.jdbc.Driver").newInstance(); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root", "root"); Statement stat=con.createStatement(); int k=stat.executeUpdate("insert into login(username,password) value('"+username+"','"+password+"')"); System.out.println("Data is inserted"); stat.close(); con.close(); } catch(Exception e){} } } } 如何在代码中插入这段代码？
一般你必须添加Action监听器到button：
Button button = new Button("click me"); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // call your logic here } });