votefunction.java

这是本人做的投票系统的源码

package cn.hxex.vote.taglib;

import java.util.Iterator;
import cn.hxex.vote.dao.IVoteDAO;
import cn.hxex.vote.model.Vote;
import cn.hxex.vote.model.VoteItem;
import cn.hxex.vote.util.DAOFactory;
import cn.hxex.vote.util.SelectConst;

public class VoteFunction {
	/*将投票类型转换为显示信息*/
	public static String voteType( String voteType ) {
		return SelectConst.getVoteTypeTitle(voteType);
	}
	
	/*输出投票类型的选项信息*/
	public static String voteTypeOptions(String defaultValue) {
		return SelectConst.getVoteTypeOptions(defaultValue);
	}
	
	/*将图形类型转换为显示信息*/
	public static String picType(String picType) {
		return SelectConst.getPicTypeTitle(picType);
	}
	
	/*输出图形类型的选项信息*/
	public static String picTypeOptions(String defaultValue) {
		return SelectConst.getPicTypeOptions(defaultValue);
	}
	
	/*显示投票信息到页面*/
	public static String display(String voteName) {
		StringBuffer buf = new StringBuffer();
		buf.append("<table>");
		buf.append("<form method=\"post\" action=\"vote.jsp\">");
		
		IVoteDAO dao = DAOFactory.getVoteDAO();
		Vote vote = dao.getVoteByName(voteName);
		if (vote != null) {
			buf.append(line("<b>" + vote.getTitle() + "</b>"));
			int i = 0;
			Iterator items = vote.getVoteItems().iterator();
			int j = 0;
			while (items.hasNext()) {
				VoteItem vi = (VoteItem)items.next();
				String control = "<input type=\"" + 
					vote.getVoteType() + 
					"\" name=\"" + 
					vote.getId() + "\" value=\"" + 
					vi.getId() + "\">";
				buf.append(line(++i + "." + control + vi.getTitle()));
				j++;
			}
System.out.println("j = " + j);
		}   
		buf.append("<tr><td align=\"center\">");
		buf.append("<input type=\"submit\" value=\"投票\">");
		buf.append("&nbsp;&nbsp;");
		buf.append("<input type=\"reset\" value=\"重置\">");
		buf.append("<input type=\"hidden\" name=\"id\" value=\"" + 
				vote.getId() + "\">");
		buf.append("</td></tr>");
		buf.append("</table>");
		return buf.toString();
	}
	
	protected static String line(String line) {
		return "<tr><td>" + line + "</td></tr>";
	}
}