myservlet.java

一个简单的同学录

package txl.servlet;

import txl.tools.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jspsmart.upload.*;

public class MyServlet extends HttpServlet {

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

	/**
	 * 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 {
		String mod = request.getParameter("mod");
		if(mod ==null){
			RequestDispatcher rd = request.getRequestDispatcher("/tongxun/add.jsp");
		    rd.forward(request, response);			
		}else if(mod.equals("add")){
			 String rand = (String)request.getSession().getAttribute("rand");
			 String input = request.getParameter("yanzheng");
			 if(!rand.equals(input)){
				 request.setAttribute("error", "false");
				 RequestDispatcher rd = request.getRequestDispatcher("/tongxun/add.jsp");
				 rd.forward(request, response);	
				 return;
			 }
			TxlUserBean txl = getTxl(request);
			DbBean db = new DbBean();
			db.addnew(txl);
			db.close();
			list(request,response);
		}else if(mod.equals("del")){
			String id = request.getParameter("id");
			DbBean db = new DbBean();
			db.delUser(id);
			db.close();
			list(request,response);
		}else if(mod.equals("med")){
			String id = request.getParameter("id");
			DbBean db = new DbBean();
			TxlUserBean txl = new TxlUserBean();
			txl = db.listUser(id);
			db.close();
			request.setAttribute("txlmd", txl);
			RequestDispatcher rd = request.getRequestDispatcher("/tongxun/txlmod.jsp");
		    rd.forward(request, response);			
		}else if(mod.equals("mmm")){
			TxlUserBean txl = getTxl(request);
			DbBean db = new DbBean();
			db.txlMod(txl);
			db.close();
			list(request,response);
		}else if(mod.equals("list")){
			list(request,response);
		}
	}
	public void list(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {
		String curPage = request.getParameter("jumpPage");
		PageBean pagebean = new PageBean();
		if(curPage == null){
			pagebean.setCurPage(1);
		}else{
			pagebean.setCurPage(Integer.parseInt(curPage));
		}
		pagebean.setRowsPerPage(10);
		DbBean db = new DbBean();
		pagebean = db.ShowInfo(pagebean);
		db.close();
		request.setAttribute("list1", pagebean);
	   RequestDispatcher rd = request.getRequestDispatcher("/tongxun/txllist.jsp");
       rd.forward(request, response);
   }
	public TxlUserBean getTxl(HttpServletRequest request)
	throws ServletException, IOException {
		TxlUserBean txl = new TxlUserBean();
		txl.setName(request.getParameter("name"));
		txl.setDz(request.getParameter("dz"));
		txl.setDh(request.getParameter("dh"));
		txl.setOicq(request.getParameter("oicq"));
		txl.setYb(request.getParameter("yb"));
		txl.setId(request.getParameter("id"));
		txl.setUid(request.getParameter("uid"));
		return txl;

   }
	/**
	 * 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);

	}

}