topicmanager.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;

public class TopicManager
    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();
    //查询所有帖子
    String cpage = request.getParameter("cpage");
    String message = request.getParameter("mes");
    if(cpage == null || cpage.equals("")){
      cpage = "1";
    }
    try{
      int ccpp = Integer.parseInt(cpage);
      TopicDB db = new TopicDB();
      db.setRows(30);
      ArrayList data = db.selectAll(ccpp);
      request.setAttribute("data",data);
      request.setAttribute("cpage",ccpp+"");
      request.setAttribute("pages",""+db.getPageCount());
      request.setAttribute("rows",""+db.getRows());
      request.setAttribute("message",message);
      request.getRequestDispatcher("admintopicmanager.jsp").forward(request,response);
    }
    catch(Exception ex){
      ex.printStackTrace();
      request.setAttribute("message","数据操作时遇到错误！");
      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() {
  }
}