noteservlet.java

实现复杂份的分页功能

package com.nokoyo.ec.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

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


import org.ecside.table.limit.Limit;
import org.ecside.table.limit.Sort;
import org.ecside.util.RequestUtils;



import com.nikoyo.ec.dao.NoteDAO;
import com.nikoyo.ec.vo.Note;
import com.nokoyo.ec.factory.DAOFactory;

public class NoteServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		this.doPost(req, resp);
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		String path = "error.jsp";
		String status = req.getParameter("status");

		if (status != null) {
			if (("insert").equals(status)) {
				String[] title = req.getParameterValues("title");
				String[] author = req.getParameterValues("author");
				String[] content = req.getParameterValues("content");
				Map map = req.getParameterMap();
				List all = new ArrayList();

				Note note = null;
				
				for (int i = 0; i < title.length; i++) {
					note = new Note();
					note.setAuthor(author[i]);
					note.setContent(content[i]);
					note.setAuthor(author[i]);
					all.add(note);
					
				}
				
				try {
					int count  = DAOFactory.getNoteDAOInstance().doCreateList(all);
					
					
					path = "";
					
					
					
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}
		}
			
		    update(req, status);
		    
		    delete(req, status);
		    
		    
		    select(req, status);

		}

	private void delete(HttpServletRequest req, String status) {
		String path;
		if (("delete").equals(status)){
			
			String[]  ids = req.getParameterValues("id");
			
			
			try {
				int count  = DAOFactory.getNoteDAOInstance().doRemoveList(ids);
				
				path="";
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
			
			
		}
	}

	private void select(HttpServletRequest req, String status) {
		
		
		if ("select".endsWith(status)){
			
			List all=null;
			int currentPage =1;
			int lineSize = 5;
			int allRecoders = 0;
			NoteDAO dao = DAOFactory.getNoteDAOInstance();
			

			/* 第二步，构造 ecSide 使用的分页对象 limit */
			Limit limit = RequestUtils.getLimit(req);
			
			Sort sort = limit.getSort();
			
			
			
		}
		
		
	}

		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
	

	private void update(HttpServletRequest req, String status) {
		String path;
		if (("update").endsWith(status)){
			
			String[] title = req.getParameterValues("title");
			String[] author = req.getParameterValues("author");
			String[] content = req.getParameterValues("content");
			Map map = req.getParameterMap();
			List all = new ArrayList();

			Note note = null;
			
			for (int i = 0; i < title.length; i++) {
				note = new Note();
				note.setAuthor(author[i]);
				note.setContent(content[i]);
				note.setAuthor(author[i]);
				all.add(note);
				
			}
			
			try {
				int count  = DAOFactory.getNoteDAOInstance().doUpdateList(all);
				
				
				path = "";
				
				
				
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}
	}
}