passwordchangeservlet.java

酒店管理系统

package servlet;

import database.*;

import java.io.IOException;
import java.io.PrintWriter;
import database.connectDB;
import java.sql.*;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import database.*;
public class PasswordChangeServlet extends HttpServlet {

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

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

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {


	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=gbk");
		PrintWriter out = response.getWriter();
		String staffID = request.getParameter("staffID");
		String password1 = request.getParameter("password1");
		String password2 = request.getParameter("password2");
		if(staffID == ""){
			   out.println("请输入员工号!");
			}
		
		
		try{
			connectDB con = new connectDB();
			String sql = "select password from staff where staffID = '"+staffID+"'";
			con.excuteQuery(sql);	
			if(!con.next())
			{
				out.println("该员工不存在！");
				out.println("<meta http-equiv='refresh' content='1 url=/hotel/passwordChange.jsp'>");
			}else if(!password1.equals(con.getString(1))){
				out.print("原密码错误，请重新输入！");
				out.println("<meta http-equiv='refresh' content='1 url=/hotel/passwordChange.jsp'>");

			}else if(con.getString(1)!=null){		
				String sql2 = "update staff set password ='"+password2+"'  where staffID='"+staffID+"'";
				con.excuteUpdate(sql2);
				out.println("<center>");
				out.println("更改成功！");
				out.println("服务器将自动跳转到前页");
				out.println("<br>");
				out.println("<a href='passwordChange.jsp'>");
				out.println("如果没有跳转，请点击这里！");
				out.println("</a>");
				out.println("<meta http-equiv='refresh' content='1 url=/hotel/passwordChange.jsp'>");
				}else{
					  out.print("Fail to Change!");
				}
			
					 
			
			
		}catch(Exception e){
			e.printStackTrace();
		}
		
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}