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 bookutil.DataDo;
				import javax.servlet.*;
				import javax.servlet.http.*;
				import java.io.*;
				import java.util.*;
				public class DispServlet extends HttpServlet {
				  private static final String CONTENT_TYPE = "text/html; charset=Big5";
				
				  //ini
				  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();
				    String curpage=request.getParameter("page");
				    ArrayList records=null;
				    //get records and div pages
				    DataDo db=new DataDo();
				    records=db.dataQuery("select * from book order by g_id desc",5,curpage);
				    db.dataClose();
				    out.println("Leave Words List");
				    out.println("td{font-size:10pt;}");
				    out.println("Display List");
				    out.println("WRite---------------------------");
				    out.println("Manage");
				    out.println("Search with title:   "+
				                "");
				
				    //display
				    for(int i=0;i				      ArrayList column=(ArrayList)records.get(i);
				      out.println("				      out.println("bordercolor=#eeeeee style=\"table-layout:fixed;word-break:break-all\">");
				      out.println("");
				      String gender = "Lady";
				      if(column.get(db.getColumn("g_sex")).toString() == "1")gender = "Sir";
				      out.println("Name:"+new String(column.get(db.getColumn("g_name")).toString().getBytes("ISO8859_1"))+
				                  " ("+gender+")");
				      out.println("QQ:"+column.get(db.getColumn("g_qq"))+"");
				      out.println("E_mail:"+column.get(db.getColumn("g_mail"))+"");
				      out.println("");
				      out.println("      ");
				      out.println("Title:"+new String(column.get(db.getColumn("g_title")).toString().getBytes("ISO8859_1"))+"");
				      out.println("    ");
				      out.println("Content:"+new String(column.get(db.getColumn("g_content")).toString().getBytes("ISO8859_1"))+"");
				      out.println("Master reply:"+column.get(db.getColumn("g_reply"))+"");
				      out.println("ID: "+column.get(db.getColumn("g_id"))+" IP:192.168.0.59  |  ");
				      out.println("Date:"+column.get(db.getColumn("g_time"))+" ");
				    }
				    out.println("current page:  "+db.cur_page+" |");
				    out.println("  total page:  "+db.total_page+" |");
				    out.println("  next page  |");
				    out.println("  previous page");
				    out.println("");
				    out.println("jump to:page");
				    out.println("");
				  }
				  //Clean up resources
				  public void destroy() {
				  }
				}