데이터베이스에서 엑셀 시트를 생성하는 중

Question

일부 코드를 사용하여 데이터베이스의 다른 테이블에서 다른 값으로 엑셀을 만들려고합니다. 코드가 작동하지만 엑셀 시트에 두 번 인쇄됩니다. 나는 모든 것을 검사했습니다. 사람이 이제 쿼리가 정확하고 작업

public class ExcelFileGen extends HttpServlet { 

public void doGet(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, java.io.IOException { 

    HttpSession session = request.getSession(true); 
    String eid = (String) session.getAttribute("eid"); 

    try { 
     String filename = "D:\\DailyWork.xls"; 
     HSSFWorkbook hwb = new HSSFWorkbook(); 
     HSSFSheet sheet = hwb.createSheet("new sheet"); 

     HSSFRow rowhead = sheet.createRow((short) 0); 

     rowhead.createCell(0).setCellValue("date"); 
     rowhead.createCell(1).setCellValue("description"); 
     rowhead.createCell(2).setCellValue("Support HRS"); 
     rowhead.createCell(3).setCellValue("Development HRS"); 
     rowhead.createCell(4).setCellValue("training HRS"); 
     rowhead.createCell(5).setCellValue("Research HRS"); 
     rowhead.createCell(6).setCellValue("Meeting HRS"); 
     rowhead.createCell(7).setCellValue("leave hrs"); 
     rowhead.createCell(8).setCellValue("Project Name"); 
     rowhead.createCell(9).setCellValue("activity"); 
     rowhead.createCell(10).setCellValue("eid"); 
     rowhead.createCell(11).setCellValue("intime"); 
     rowhead.createCell(12).setCellValue("outtime"); 

     Connection con = ConnectionManager.getConnection(); 
     Statement st = con.createStatement(); 
       ResultSet rs = st.executeQuery("select u.date, u.description, u.field1, u.field2, u.field3, u.field4, u.field5, u.field6, u.field7, u.activity, u.eid, d.intime, d.outtime, d.eid from updatework AS u, fulltime as d where d.eid = u.eid AND u.eid='" 
         + eid + "'"); 
     int i = 1; 
     while (rs.next()) 

     { 
      HSSFRow row = sheet.createRow((short) i); 
      row.createCell(0).setCellValue(rs.getString("date")); 
      row.createCell(1).setCellValue(rs.getString("description")); 
      sheet.autoSizeColumn(1); 
      row.createCell(2).setCellValue(rs.getString("field1")); 
      sheet.autoSizeColumn(2); 
      row.createCell(3).setCellValue(rs.getString("field2")); 
      sheet.autoSizeColumn(3); 
      row.createCell(4).setCellValue(rs.getString("field3")); 
      sheet.autoSizeColumn(4); 
      row.createCell(5).setCellValue(rs.getString("field4")); 
      sheet.autoSizeColumn(5); 
      row.createCell(6).setCellValue(rs.getString("field5")); 
      sheet.autoSizeColumn(6); 
      row.createCell(7).setCellValue(rs.getString("field6")); 
      sheet.autoSizeColumn(7); 
      row.createCell(8).setCellValue(rs.getString("field7")); 
      sheet.autoSizeColumn(8); 
      row.createCell(9).setCellValue(rs.getString("activity")); 
      sheet.autoSizeColumn(9); 
      row.createCell(10).setCellValue(rs.getString("eid")); 
      sheet.autoSizeColumn(10); 
      row.createCell(11).setCellValue(rs.getString("intime")); 
      sheet.autoSizeColumn(11); 
      row.createCell(12).setCellValue(rs.getString("outtime")); 
      sheet.autoSizeColumn(12); 

      i++; 
     } 
     FileOutputStream fileOut = new FileOutputStream(filename); 
     hwb.write(fileOut); 
     fileOut.close(); 
     System.out.println("Your excel file has been generated!"); 

    } catch (Exception ex) { 
     System.out.println(ex); 

    } 
} 

}

Answer 1

여기 내 솔루션의 모든 것을는 정확하지만 쿼리가 적절하지 않았다입니다 .. 내 코드는 여기 ... 여기 를 좀 도와주세요 ...

ResultSet rs = st.executeQuery("select u.date, u.description, u.field1, u.field2, u.field3, u.field4, u.field5, u.field6, u.field7, u.activity, u.eid, d.intime, d.outtime, d.eid from updatework AS u, fulltime as d where (d.date=u.date) and (d.eid = u.eid) AND u.eid='" 
        + eid + "'");