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Attendance.java
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package Controller;
import db.DBConnector;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Calendar;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.swing.JOptionPane;
public class Attendance extends HttpServlet
{
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
resp.sendRedirect("log.html");
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
HttpSession session=req.getSession(true);
String empId =(String) session.getAttribute("empId");
try
{
String months[]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
Calendar calendar=Calendar.getInstance();
System.out.println("Date:");
String currentDate=calendar.get(Calendar.DATE)+"-"+months[calendar.get(Calendar.MONTH)]+"-"+calendar.get(Calendar.YEAR);
System.out.println(currentDate);
DBConnector db_connector = new DBConnector();
Connection con = db_connector.getConnection();
Statement st = db_connector.getStatement();
System.out.println("connection open");
String query = "select attendance,currentdate,dateOfJoining from listofemp where empId='"+empId+"'";
System.out.println("Query = " + query);
ResultSet rs = st.executeQuery(query);
while (rs.next())
{
int attendance=Integer.parseInt(rs.getString("attendance"));
String tableCurrentDate=rs.getString("currentdate");
String doj=rs.getString("dateOfJoining");
if(!currentDate.equals(tableCurrentDate))
{
attendance++;
query="update listofemp set attendance='"+attendance+"',"
+ " currentdate='"+currentDate+"' where empid='"+empId+"'";
int i=st.executeUpdate(query);
if(i>0)
{
System.out.println("record updated");
JOptionPane.showMessageDialog(null,"Attendance Updated");
PrintWriter out = resp.getWriter();
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Attendance</TITLE>");
out.println("</HEAD>");
out.println("<BODY bgcolor=cyan>");
out.println("<BR>");
out.println("<div align=center><b>Attendance Updated</b>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("<B>Your Attendance is: <B>");
out.print(attendance);
out.println("<BR>");
out.println("<B> From Date: <B>");
out.println(doj);
out.println("<BR>");
out.println("<B> Till Date: <B>");
out.println(currentDate);
out.println("<BR>");
out.println("<BR>");
out.println("<a href=index.jsp >Back</a>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("<a href=index.html >Log Out </a></div>");
out.println("</BODY>");
out.println("</HTML>");
}
else
{
System.out.println("Attendance Not Updated");
PrintWriter out = resp.getWriter();
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Attendance</TITLE>");
out.println("</HEAD>");
out.println("<BODY bgcolor=cyan>");
out.println("<BR>");
out.println("<div align=center><b>Attendance Not Updated:</b>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("Your Attendance is:");
out.print(attendance);
out.println("<B> From Date: <B>");
out.println(doj);
out.println("<B> Till Date: <B>");
out.println(currentDate);
out.println("<BR>");
out.println("<a href=index.jsp >Back</a>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("<a href=index.html >Log Out </a></div>");
out.println("</BODY>");
out.println("</HTML>");
}
}
else
{
System.out.println("Already submitted");
JOptionPane.showMessageDialog(null,"Attendance Already Submitted");
PrintWriter out = resp.getWriter();
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Attendance</TITLE>");
out.println("</HEAD>");
out.println("<BODY bgcolor=cyan>");
out.println("<BR>");
out.println("<div align=center><b>Attendance Already Submitted!</b>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("Your Attendance is:");
out.print(attendance);
out.println("<BR>");
out.println("<B> From Date: <B>");
out.println(doj);
out.println("<BR>");
out.println("<B> Till Date: <B>");
out.println(currentDate);
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("<a href=index.jsp >Back</a>");
out.println("<BR>");
out.println("<BR>");
out.println("<BR>");
out.println("<a href=index.html >Log Out </a></div>");
out.println("</BODY>");
out.println("</HTML>");
}
}
}
catch (Exception e)
{
System.out.println(e);
}
}
}