src/servlet/DelServlet.java

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package servlet;

import java.io.IOException;
import java.util.ArrayList;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import util.Validate;
import bean.InsertUpdateDelBean;
import bean.SelectBean;

public class DelServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public DelServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Validate vd = new Validate();
		String adminid = vd.getUnicode(request.getParameter("adminid"));
		String emp = vd.getUnicode(request.getParameter("emp"));
		String record = vd.getUnicode(request.getParameter("record"));
		String train = vd.getUnicode(request.getParameter("train"));
		String pact = vd.getUnicode(request.getParameter("pact"));
		String evaluating = vd.getUnicode(request.getParameter("evaluating"));
		String boon = vd.getUnicode(request.getParameter("boon"));
		String ensure = vd.getUnicode(request.getParameter("ensure"));
		
		InsertUpdateDelBean ib = new InsertUpdateDelBean();
		SelectBean sb = new SelectBean();
		
		String sql = "";
		String str = "";
		
		if(adminid != null && !adminid.equals("")){
			str = "/adminuserlist.jsp";
			sql = "select * from admin";
			String[] args = {"id","name","pwd"};
			ArrayList al = sb.select(sql, args);
			if(al.size() == 1){
				request.setAttribute("error", "1");
			}else{
				sql = "delete from admin where id="+adminid;
				ib.insertANDupdateANDdel(sql);