src/servlet/PwdNameUserServlet.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 javax.servlet.http.HttpSession;

import util.Validate;
import bean.InsertUpdateDelBean;

public class PwdNameUserServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public PwdNameUserServlet() {
		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 newpwd = vd.getUnicode(request.getParameter("newpwd"));
		String newname = vd.getUnicode(request.getParameter("newname"));
		String name = vd.getUnicode(request.getParameter("name"));
		String pwd = vd.getUnicode(request.getParameter("pwd"));
		String xpwd = vd.getUnicode(request.getParameter("xpwd"));
		String xname = vd.getUnicode(request.getParameter("xname"));
		String xuser = vd.getUnicode(request.getParameter("xuser"));
		String sql = "";
		String str ="";
		InsertUpdateDelBean ib = new InsertUpdateDelBean();
		HttpSession session = request.getSession();
		ArrayList al = (ArrayList)session.getAttribute("login");
		String id = (String)al.get(0);
		if(xpwd != null && xpwd.equals("1")){
			 sql = "update admin set pwd='"+newpwd+"' where id='"+id+"'";
		}
		if(xname != null && xname.equals("1")){
			sql = "update admin set name='"+newname+"' where id='"+id+"'";
		}
		if(xuser != null && xuser.equals("1")){
			sql = "insert into admin(name,pwd) values('"+name+"','"+pwd+"')";
		}
		int flag = ib.insertANDupdateANDdel(sql);
		if(flag == -1){
			request.setAttribute("error", "1");