Create Excel-DEMO and javaexcel-demo in Java

Create Excel-DEMO and javaexcel-demo in Java

Import java. io. file; import java. io. fileOutputStream; import java. io. IOException; import java. io. outputStream; import java. text. simpleDateFormat; import java. util. date; import jxl. workbook; import jxl. write. dateFormats; import jxl. write. dateTime; import jxl. write. label; import jxl. write. writableCellFormat; import jxl. write. writableSheet; import jxl. write. writableWorkbook; import jxl. write. writeException; public Class SimpleExcelDemo {private static int column = 0; private static int row = 0; // create a working thin public static void createExcelFile (String demand_id) throws WriteException, IOException {// create a File directory String realPath = "C: \ excel \"; File fileDir = new File (realPath); if (! FileDir. exists () {fileDir. mkdirs ();} SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd"); String date = sdf. format (new Date (System. currentTimeMillis (); String fileName = date + ". xls "; String filePath = realPath + fileName; File file = new File (filePath); WritableCellFormat wf = new WritableCellFormat (DateFormats. FORMAT1); SimpleDateFormat sdf1 = new SimpleDateFormat ("yyyy-MM-dd HH: mm: ss" ); String current = sdf1.format (new Date (System. currentTimeMillis (); // create a file output stream to write the table to the local folder OutputStream out = null; WritableWorkbook wwb = null; WritableSheet sheet = null; Label cell; try {if (! File. exists () {out = new FileOutputStream (file); // create an excel file (create a readable and written Workbook) wwb = Workbook. createWorkbook (out); // create a new sheet. createSheet ("processed", 0); // create the content to be displayed and create a cell. The first parameter is the column coordinate, and the second parameter is the row coordinate, the third parameter is content cell = new Label (column, row, "requirement ID"); sheet. addCell (cell); cell = new Label (column + 1, row, "Upload time"); sheet. addCell (cell); cell = new Label (column, ++ row, demand_id); sheet. addCell (cell); Date d = New Date (); d = sdf1.parse (current); DateTime dt = new DateTime (column + 1, row, d, wf); sheet. addCell (dt);} else {File [] files = fileDir. listFiles (); for (File f: files) {if (f. getName (). equals (fileName) {Workbook wb = Workbook. getWorkbook (f); wwb = Workbook. createWorkbook (new File (realPath + fileName), wb); sheet = wwb. getSheet ("processed"); cell = new Label (column, ++ row, demand_id); sheet. addCell (cel L); Date d = new Date (); d = sdf1.parse (current); DateTime dt = new DateTime (column + 1, row, d, wf); sheet. addCell (dt) ;}}} catch (Exception e) {e. printStackTrace ();} wwb. write (); // write to the Excel worksheet wwb. close (); // close the Excel worksheet and close the IO stream.} Public static void main (String [] args) throws Exception {createExcelFile ("1234"); System. out. println (column + "," + row); // create the File directory File fileDir = new File ("C: \ excel"); if (! FileDir. exists () {fileDir. mkdirs ();} SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd"); String date = sdf. format (new Date (System. currentTimeMillis (); String fileName = date + ". xls "; String filePath =" C: \ excel \ "+ fileName; File file = new File (filePath); // create a File output stream, used to write a table to the local folder OutputStream out = new FileOutputStream (file); // create an excel file (create a readable and written Workbook) WritableWorkbook wwb = Workbook. CreateWorkbook (out); // create a new page named WritableSheet sheet = wwb. createSheet ("processed", 0); // create the content to be displayed and create a cell. The first parameter is the column coordinate, and the second parameter is the row coordinate, the third parameter is content Label cell = new Label (, "requirement ID"); sheet. addCell (cell); cell = new Label (1, 0, "Upload time"); sheet. addCell (cell); cell = new Label (0, 1, "5055"); sheet. addCell (cell); WritableCellFormat wf = new WritableCellFormat (DateFormats. FORMAT1); SimpleDateFormat sdf1 = new SimpleDateForm At ("yyyy-MM-dd HH: mm: ss"); String current = sdf1.format (new Date (System. currentTimeMillis (); Date d = sdf1.parse (current); DateTime birthday = new DateTime (1, 1, d, wf); sheet. addCell (birthday); wwb. write (); // write to the Excel worksheet wwb. close (); // close the Excel worksheet and close the IO stream. }}