JavaWeb项目开发案例精粹-第2章投票系统-004action层

1.

 package com.sanqing.action;

 import java.util.UUID;

 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.Vote;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.dao.VoteDAO;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteDAOFactory;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;

 public class AddVoteAction extends ActionSupport {
     private int channel;        // 封装channel参数
     private String voteName;    // 封装voteName参数
     private String[] voteOption;// 封装voteOption参数

     public int getChannel() {
         return channel;
     }

     public void setChannel(int channel) {
         this.channel = channel;
     }

     public String getVoteName() {
         return voteName;
     }

     public void setVoteName(String voteName) {
         this.voteName = voteName;
     }

     public String[] getVoteOption() {
         return voteOption;
     }

     public void setVoteOption(String[] voteOption) {
         this.voteOption = voteOption;
     }

     public String execute() throws Exception {
         VoteDAO voteDAO = VoteDAOFactory.getVoteDAOInstance();//获得VoteDAO实例
         VoteOptionDAO voteOptionDAO =
             VoteOptionDAOFactory.getVoteOptionDAOInstance();//获得voteOption实例
         //首先保存投票，然后再保存投票选项
         Vote vote = new Vote();
         vote.setChannelID(channel);
         vote.setVoteName(voteName);
         voteDAO.addVote(vote);
         //查询投票ID
         int voteID = voteDAO.findVoteByName(voteName).getVoteID();
         //保存投票选项
         for(String voteOptionName : voteOption) {
             VoteOption vp = new VoteOption();
             vp.setVoteID(voteID);
             vp.setVoteOptionName(voteOptionName);
             voteOptionDAO.addVoteOption(vp);
         }
         return this.SUCCESS;
     }

 }

2.

 package com.sanqing.action;

 import java.util.List;

 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.dao.VoteDAO;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteDAOFactory;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;

 public class DeleteVoteAction extends ActionSupport{
     private int voteID;

     public int getVoteID() {
         return voteID;
     }

     public void setVoteID(int voteID) {
         this.voteID = voteID;
     }

     public String execute() throws Exception {
         VoteDAO voteDAO = VoteDAOFactory.getVoteDAOInstance();
         VoteOptionDAO voteOptionDAO = VoteOptionDAOFactory
                 .getVoteOptionDAOInstance();
         //通过该投票ID查找该投票下的所有投票选项
         List<VoteOption> voteOptions = voteOptionDAO.findVoteOptionByVoteID(voteID);
         //循环进行删除
         for(VoteOption voteOption : voteOptions) {
             voteOptionDAO.deleteVoteOption(voteOption.getVoteOptionID());
         }
         //再删除该投票
         voteDAO.deleteVote(voteID);
         return this.SUCCESS;
     }
 }

3.

 package com.sanqing.action;

 import javax.servlet.http.Cookie;

 import org.apache.struts2.ServletActionContext;

 import com.opensymphony.xwork2.ActionContext;
 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;

 public class DoVoteAction extends ActionSupport{
     private int voteOptionID;
     private String otherOption;
     private int voteID;
     private int channelID;

     public int getChannelID() {
         return channelID;
     }
     public void setChannelID(int channelID) {
         this.channelID = channelID;
     }
     public int getVoteID() {
         return voteID;
     }

     public void setVoteID(int voteID) {
         this.voteID = voteID;
     }

     public int getVoteOptionID() {
         return voteOptionID;
     }

     public void setVoteOptionID(int voteOptionID) {
         this.voteOptionID = voteOptionID;
     }

     public String getOtherOption() {
         return otherOption;
     }

     public void setOtherOption(String otherOption) {
         this.otherOption = otherOption;
     }

     public String execute() throws Exception {
         VoteOptionDAO voteOptionDAO = VoteOptionDAOFactory
         .getVoteOptionDAOInstance();
         //首先判断用户是否能进行投票
         Cookie cookies[]= ServletActionContext.getRequest().getCookies();//取出cookies

         for(Cookie cookie : cookies) {//遍历cookies

             if(cookie.getValue().equals(Integer.toString(voteID))) {//如果用户已经投过票
                 this.addActionError("您今天已经投过票了，请明天再来！");
                 return this.INPUT;
             }
         }
         //判断是否选择其他选项
         if(voteOptionID == 0) {
             //添加该选项
             VoteOption voteOption = new VoteOption();
             voteOption.setVoteID(voteID);
             voteOption.setVoteOptionName(otherOption);
             voteOption.setTicketNum(1);
             voteOptionDAO.addVoteOption(voteOption);
         }else {
             //取出以前的投票选项
             VoteOption voteOption = voteOptionDAO.findVoteOptionById(voteOptionID);
             int ticketNum = voteOption.getTicketNum();
             //更新选项的投票数
             voteOption.setTicketNum(ticketNum + 1);
             voteOptionDAO.updateVoteOption(voteOption);
             //更新完成后，添加cookie，防止重复投票
             Cookie cookie = new Cookie("hasVote" + voteID,Integer.toString(voteID));
             ServletActionContext.getResponse().addCookie(cookie);
         }
         return this.SUCCESS;
     }

 }

4.

 package com.sanqing.action;

 import java.util.ArrayList;
 import java.util.List;

 import javax.servlet.http.HttpServletRequest;

 import org.apache.struts2.ServletActionContext;

 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.Vote;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.bean.VoteResult;
 import com.sanqing.dao.VoteDAO;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteDAOFactory;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;
 import com.sanqing.util.Page;
 import com.sanqing.util.PageUtil;

 public class ShowVoteAction extends ActionSupport {
     private int currentPage;

     public int getCurrentPage() {
         return currentPage;
     }

     public void setCurrentPage(int currentPage) {
         this.currentPage = currentPage;
     }

     public String execute() throws Exception {
         VoteDAO voteDAO = VoteDAOFactory.getVoteDAOInstance();
         VoteOptionDAO voteOptionDAO = VoteOptionDAOFactory
                 .getVoteOptionDAOInstance();
         int totalCount = voteDAO.findAllCount();
         Page page = PageUtil.createPage(10, totalCount, currentPage);
         List<Vote> votes = voteDAO.findAllVote(page);
         List<VoteResult> voteResultList = new ArrayList<VoteResult>();
         for (Vote vote : votes) {
             List<VoteOption> voteOptions = voteOptionDAO
                     .findVoteOptionByVoteID(vote.getVoteID());
             VoteResult voteResult = new VoteResult();
             voteResult.setVote(vote);
             voteResult.setVoteOptions(voteOptions);
             voteResultList.add(voteResult);
         }
         HttpServletRequest request = ServletActionContext.getRequest();
         request.setAttribute("voteResultList",voteResultList);
         request.setAttribute("page",page);
         return this.SUCCESS;
     }
 }

5.

 package com.sanqing.action;

 import java.util.ArrayList;
 import java.util.List;

 import javax.servlet.http.HttpServletRequest;

 import org.apache.struts2.ServletActionContext;

 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.Vote;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.bean.VoteResult;
 import com.sanqing.dao.VoteDAO;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteDAOFactory;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;
 import com.sanqing.util.Page;
 import com.sanqing.util.PageUtil;

 public class ShowVoteByChannelAction extends ActionSupport {
     private int channelID;
     private int currentPage;

     public int getChannelID() {
         return channelID;
     }

     public void setChannelID(int channelID) {
         this.channelID = channelID;
     }

     public int getCurrentPage() {
         return currentPage;
     }

     public void setCurrentPage(int currentPage) {
         this.currentPage = currentPage;
     }

     public String execute() throws Exception {
         VoteDAO voteDAO = VoteDAOFactory.getVoteDAOInstance();
         VoteOptionDAO voteOptionDAO = VoteOptionDAOFactory
                 .getVoteOptionDAOInstance();
         // 获得该频道下的记录数
         int totalCount = voteDAO.fintCountByChannel(channelID);
         // 设置分页信息
         Page page = PageUtil.createPage(3, totalCount, currentPage);
         //取得该频道下的记录
         List<Vote> votes = voteDAO.findVoteByChannel(page, channelID);
         //存放所有投票和投票选项
         List<VoteResult> voteResultList = new ArrayList<VoteResult>();
         for (Vote vote : votes) {
             //查询该投票下的所有投票选项
             List<VoteOption> voteOptions = voteOptionDAO
                     .findVoteOptionByVoteID(vote.getVoteID());
             VoteResult voteResult = new VoteResult();
             voteResult.setVote(vote);
             voteResult.setVoteOptions(voteOptions);
             voteResultList.add(voteResult);
         }
         HttpServletRequest request = ServletActionContext.getRequest();
         request.setAttribute("voteResultList",voteResultList);
         request.setAttribute("page",page);
         return this.SUCCESS;
     }
 }

6.

 package com.sanqing.action;

 import java.util.List;

 import org.jfree.chart.ChartFactory;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.data.category.DefaultCategoryDataset;

 import com.opensymphony.xwork2.ActionSupport;
 import com.sanqing.bean.Vote;
 import com.sanqing.bean.VoteOption;
 import com.sanqing.dao.VoteDAO;
 import com.sanqing.dao.VoteOptionDAO;
 import com.sanqing.daoFactory.VoteDAOFactory;
 import com.sanqing.daoFactory.VoteOptionDAOFactory;

 public class VoteResultAction extends ActionSupport {
     private JFreeChart chart;
     private int voteID;//投票ID

     public int getVoteID() {
         return voteID;
     }

     public void setVoteID(int voteID) {
         this.voteID = voteID;
     }

     public JFreeChart getChart() {
         VoteDAO voteDAO = VoteDAOFactory.getVoteDAOInstance();//获得VoteDAO实例
         VoteOptionDAO voteOptionDAO =
             VoteOptionDAOFactory.getVoteOptionDAOInstance();//获得voteOption实例
         //根据投票ID得到的投票
         Vote vote = voteDAO.findVoteById(voteID);
         String voteName = vote.getVoteName();    //得到投票名称

         //根据投票ID得到所有的投票选项
         List<VoteOption> voteOptions = voteOptionDAO.findVoteOptionByVoteID(voteID);

         DefaultCategoryDataset dcd = new DefaultCategoryDataset();//数据源

         //设置数据
         for(VoteOption voteOption : voteOptions) {
             dcd.setValue(voteOption.getTicketNum(),"",voteOption.getVoteOptionName());
         }
         //使用工厂类创建柱状图
         JFreeChart chart = ChartFactory.createBarChart3D(
                 voteName,
                 "投票选项",
                 "投票数",
                 dcd,
                 PlotOrientation.VERTICAL ,
                 false,
                 true,
                 false);

         return chart;
     }

     public void setChart(JFreeChart chart) {
         this.chart = chart;
     }

     public String execute() throws Exception {
         return SUCCESS;
     }
 }