replay.java

功能描述 1） 后台：管理员负责对整个论坛进行管理

package bbs.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import bbs.db.TopicDB;
import bbs.bean.BbsReply;
import bbs.db.ReplayDB;

public class Replay
    extends HttpServlet {
  private static final String CONTENT_TYPE = "text/html; charset=GBK";

  //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();
    //获得帖子的ID，用户名和回帖的内容
    String content = request.getParameter("content");
    String name = request.getParameter("username");
    String tid = request.getParameter("tid");
    String cpage = request.getParameter("cpage");
    //分页
    int ccpp;
    if (cpage == null || cpage.equals("")) {
      cpage = "1";
    }
    //获得当前系统时间
    Calendar cd = Calendar.getInstance();
    String year = cd.get(Calendar.YEAR) + "";
    String month = (cd.get(Calendar.MONTH) + 1) + "";
    String day = cd.get(Calendar.DAY_OF_MONTH) + "";

    String hour = cd.get(Calendar.HOUR_OF_DAY) + "";
    String minute = cd.get(Calendar.MINUTE) + "";
    String second = cd.get(Calendar.SECOND) + "";
    String time = year + "-" + month + "-" + day + " " + hour + ":" + minute +
        ":" + second;

    try {
      ccpp = Integer.parseInt(cpage);
      BbsReply obj = new BbsReply();
      obj.setRtid(Integer.parseInt(tid));
      obj.setRcontents(content);
      obj.setRtime(time);
      obj.setRip(request.getRemoteAddr());
      ReplayDB db = new ReplayDB();
      if(name == null || name.equals(""))
      {
        name = "游客";
      }
      //判断回帖是否成功
      if (db.insert(obj, name) > 0) {
        db.setRows(10);
        ArrayList data = db.select(Integer.parseInt(tid), ccpp);
        request.setAttribute("data", data);
        request.setAttribute("cpage", ccpp + "");
        int rows = db.getRows();
        int pageCount = db.getPageCount();
        request.setAttribute("row", rows + "");
        request.setAttribute("pages", pageCount + "");

      }
      else {
        request.setAttribute("message", "对不起,回复贴子失败!");
      }
      request.getRequestDispatcher("showtopic.jsp").forward(request, response);
    }
    catch (Exception ex) {
      ex.printStackTrace();
      request.setAttribute("message", "数据库操作发生错误！");
      request.getRequestDispatcher("error.jsp").forward(request, response);
    }
    out.close();
  }

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

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