How to Export data from oracle to excel in java скачать в хорошем качестве

How to Export data from oracle to excel in java

Required Softwares:- NetBeans:- https://netbeans.org/downloads/ JDK:- https://www.oracle.com/technetwork/ja... ORACLE 11g : https://www.oracle.com/technetwork/da... SQL Developer : https://www.oracle.com/database/techn... Download Jar Files : https://www.dropbox.com/sh/f5ghzj70v8... Java Code : package demo1; import java.sql.*; import java.io.File; import java.io.FileOutputStream; import java.io.FileInputStream; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * @author TechnoStudio */ public class Demo1 { /** @param args the command line arguments */ public static void main(String[] args) { try{ //step1 load the driver class Class.forName("oracle.jdbc.driver.OracleDriver"); //step2 create the connection object Connection con = DriverManager.getConnection( "jdbc:oracle:thin:@localhost:1521:xe","SYSTEM","SYSTEM"); //step3 create the statement object Statement stmt = con.createStatement(); //step4 execute query ResultSet rs = stmt.executeQuery("SELECT * FROM emp where flag = 'N'"); //Blank workbook XSSFWorkbook workbook = null; //Create a blank sheet XSSFSheet sheet = null; //This data needs to be written (Object[]) XSSFRow row = null; XSSFCell cell; int existingRows = 0; File targetFile = new File("employe.xlsx"); FileInputStream fsIP = null; if(targetFile.exists()) { //Read the spreadsheet that needs to be updated fsIP = new FileInputStream(targetFile); workbook = new XSSFWorkbook(fsIP); sheet = workbook.getSheet("employe Data"); existingRows = sheet.getPhysicalNumberOfRows(); existingRows++; } else { workbook = new XSSFWorkbook(); sheet = workbook.createSheet("employe Data"); row = sheet.createRow(existingRows); cell = row.createCell(1); cell.setCellValue("EID"); cell = row.createCell(2); cell.setCellValue("ENAME"); cell = row.createCell(3); cell.setCellValue("EADD"); cell = row.createCell(4); cell.setCellValue("ESALARY"); cell = row.createCell(5); cell.setCellValue("ECONTACT"); cell = row.createCell(6); cell.setCellValue("ESTATUS"); existingRows++; } while(rs.next()) { row = sheet.createRow(existingRows); cell = row.createCell(1); cell.setCellValue(rs.getString("EID")); cell = row.createCell(2); cell.setCellValue(rs.getString("ENAME")); cell = row.createCell(3); cell.setCellValue(rs.getString("EADD")); cell = row.createCell(4); cell.setCellValue(rs.getString("ESALARY")); cell = row.createCell(5); cell.setCellValue(rs.getString("ECONTACT")); cell = row.createCell(6); cell.setCellValue(rs.getString("ESTATUS")); //step6 Update Database String sql="UPDATE emp SET FLAG = 'Y' WHERE EID='"+rs.getString("EID")+"'"; Statement stmt2 = con.createStatement(); stmt2.executeQuery(sql); stmt2.close(); existingRows++; } if(fsIP != null) { fsIP.close(); } FileOutputStream out = new FileOutputStream(new File("employe.xlsx")); workbook.write(out); //step5 close the connection object out.close(); System.out.println("employe.xlsx written successfully"); rs.close(); stmt.close(); con.close(); } catch(Exception e) { e.printStackTrace(); //System.out.println(e); } } }