wealthsortdo.java

一个bbs论坛系统

package com.lovo.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.lovo.factory.BOFactory;
import com.lovo.po.UserPO;
import com.lovo.util.Page;

public class WealthSortDO extends HttpServlet {
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		this.doPost(request, response);
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setContentType("text/html;charset=utf-8");
		response.setCharacterEncoding("utf-8");
		
		String currPageStr = request.getParameter("page");
		HttpSession session = request.getSession(true);
		PrintWriter out = response.getWriter();
		String home= request.getParameter("home");
		
		
		int currPage = 1;
		try {
			currPage = Integer.parseInt(currPageStr);
		} catch (NumberFormatException e) {
			currPage = 1;
		}
		
		if(currPage <= 0) {
			currPage = 1;
		}
		
		int maxRows = BOFactory.getUserBOInstance().queryRegUserNum();
		
		Page wealthPage = new Page();
		wealthPage.setCurrPage(currPage);
		wealthPage.setMaxRows(maxRows);
		
		int maxPages = maxRows % wealthPage.getPageRows() == 0 ? maxRows / wealthPage.getPageRows() : maxRows / wealthPage.getPageRows() + 1;
		
		if(currPage >= maxPages) {
			currPage = maxPages;
			wealthPage.setCurrPage(currPage);
		}
		System.out.println("currPage = " + currPage);
		List<UserPO> wealthList = BOFactory.getUserBOInstance().queryUserByWealth(wealthPage);
		session.setAttribute("wealthList", wealthList);
		UserPO user = (UserPO)session.getAttribute("user");
		if(user == null) {
			response.sendRedirect("../web/error.jsp?errorInfo = you are not login");
		}
		List<UserPO> sortWealthList = BOFactory.getUserBOInstance().queryUserByWealth();
		int sort = sortWealthList.indexOf(user);
		session.setAttribute("wealthPage", wealthPage);
		session.setAttribute("sort", sort);
		if(home == null) {
			response.sendRedirect("../web/jsp/wealthSort.jsp?maxPages="+maxPages);
		} else {
			response.sendRedirect("../web/jsp/homewealth.jsp?maxPages="+maxPages);
		}
	}
}