update.java

图书信息管理系统

package com.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.util.ArrayList;

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 com.DBwork;
import com.data;
import com.bean.LoginBean;
import com.bean.BookBean;

public class update extends HttpServlet {

	/**
	 * 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 {
		request.setCharacterEncoding("GB2312");
		HttpSession session = request.getSession();	
		DBwork dbwork = new DBwork();
		boolean bool = false;
		data dt = new data();
		
		ArrayList Bookar = new ArrayList();
		ArrayList Userar = new ArrayList();
		ArrayList ar = new ArrayList();
		LoginBean lb = new LoginBean();
		BookBean bb = new BookBean();
		
		String id = request.getParameter("id");
		String type = request.getParameter("type");	
		String loginName = request.getParameter("loginName");
		String loginPwd = request.getParameter("loginPwd");
		String power = request.getParameter("power");
		String phone = request.getParameter("phone");
		String bookName = request.getParameter("bookName");		
		String editor = request.getParameter("editor");
		String address = request.getParameter("address");
		String isbn = request.getParameter("isbn");
		
		try{
			Connection con = dbwork.getconnection();
			if("admin".equals(type)){
				lb.setId(id);
				lb.setLoginName(loginName);
				lb.setLoginPwd(loginPwd);			
				lb.setMid(power);
				lb.setPhone(phone);
				ar.add(lb);
			}else if("book".equals(type)){
				bb.setBookname(bookName);
				bb.setEditor(editor);
				bb.setAddress(address);
				bb.setIsbn(isbn);
				ar.add(bb);
			}
			bool = dt.UpdateMessage(type, con, id, ar);
			if(bool){
				Bookar = dt.MessageRebook();
				session.setAttribute("booklist", Bookar);
				Userar = dt.MessageReMe();
				session.setAttribute("userlist", Userar);
				if("admin".equals(type)){					
					response.sendRedirect("UserMessage.jsp?t=2");
				}else if("book".equals(type)){
					response.sendRedirect("BookMessage.jsp?t=2");

				}
			}else{
				response.sendRedirect("error.jsp");			
			}
			
		}catch(Exception e){
			e.printStackTrace();
		}
		
	}

	/**
	 * 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 {
			doGet(request,response);
	}

}