JavaWeb项目开发案例精粹-第2章投票系统-004action层

时间：2022-10-29 23:50:27

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;

     }

 }

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