【Java开源代码栏目提醒】:以下是网学会员为您推荐的Java开源代码-BrowseVoteServlet.java,希望本篇文章对您学习有所帮助。
package com.wxpn.tutorial.servlet;
import java.io.IOException;
import java.util.Collection;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class for Servlet: BrowseVoteServlet
*/
public class BrowseVoteServlet extends javax.servlet.http.HttpServlet implements
javax.servlet.Servlet {
/*
* (non-Java-doc)
*
* @see javax.servlet.http.HttpServlet#HttpServlet()
*/
public BrowseVoteServlet() {
super();
}
/*
* (non-Java-doc)
*
* @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request,
* HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);
response.setContentType("text/html;charset=UTF-8");
int pagesize = 10;
String page = request.getParameter("page");
VoteMgr mgr = new VoteMgr();
int count = mgr.getCount();// 记录总数
int totalPageNum = count / pagesize;// 逻辑页数
// 如果纪录总数除以每页的显示个数,余数大于0,那么
// 逻辑页数应该为商+1
if ((count % pagesize) > 0) {
totalPageNum += 1;
}
Collection c = null;
if (page == null) {
c = mgr.getAllMessages(pagesize, 1);
} else {
c = mgr.getAllMessages(pagesize, Integer.parseInt(page));
}
request.setAttribute("totalPageNum", new Integer(totalPageNum));
request.setAttribute("c", c);
try {
String url=request.getParameter("type");
if(url==null){
request.getRequestDispatcher("browse.jsp").forward(request,
response);
}else{
request.getRequestDispatcher("admin/browse.jsp").forward(request,
response);
}
} catch (Throwable t) {
getServletContext().log(t.getMessage());
}
}
}
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