manageservlet.java~2~

jsp设计的留言板,供大家参考,使用的是文本文件作为数据库

package bookservlets;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import bookutil.BookTools;
import bookutil.DataDo;
public class ManageServlet extends HttpServlet {
  private static final String CONTENT_TYPE = "text/html; charset=Big5";

  //Initialize global variables
  public void init() throws ServletException {
  }

  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType(CONTENT_TYPE);
    PrintWriter out = response.getWriter();
    //--------right check
    BookTools bt = new BookTools();
    String name = bt.elicitCookie(request,"master").toString();
    if(name == null || name.length() == 0){
      out.println("<script>window.location=\"manage/masterlogin.jsp\"</script>");
      return;
    }
    DataDo db = new DataDo();
    int status = 0;
    //----------process delete request
    if(request.getParameter("smdelete") != null)
    {
       String id = request.getParameter("id").trim();
       status = db.dataUpdate("delete from book where g_id in ('"+id+"')");
    }
  }

  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doGet(request, response);
  }

  //Clean up resources
  public void destroy() {
  }
}