src/org/bs/servlet/backend/PicServlet.java

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package org.bs.servlet.backend;

import java.io.IOException;

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

import org.bs.model.Pic;
import org.bs.model.User;
import org.bs.service.PicService;
import org.bs.utils.JDBCHandler;
import org.bs.utils.PageContext;
import org.bs.utils.ResultUtils;



public class PicServlet extends BaseServlet {
	private PicService picService ;
	@Override
	public void addInput(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		super.addInput(request, response);
	}
	
	@Override
	public void add(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Pic pic = ResultUtils.copyParams(Pic.class, request);
		User user = (User)request.getSession().getAttribute("login_user");
		pic.setUser(user);
		picService.add(pic);
		request.setAttribute("pic",pic);
		request.getRequestDispatcher("PicServlet?method=list").forward(request, response);
	}

	@Override
	public void delete(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		picService.delete(picService.findById(id));
		request.getRequestDispatcher("PicServlet?method=list").forward(request, response);
	}
	public void deleteBetch(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String[] picIds = request.getParameterValues("picCheckbox");
		for (int i = 0; i < picIds.length; i++) {
			picService.delete(picService.findById(Integer.parseInt(picIds[i])));
		}
		request.getRequestDispatcher("PicServlet?method=list").forward(request, response);
	}

	@Override
	public void modify(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		request.setAttribute("pic", picService.findById(id));
		request.getRequestDispatcher("/backend/pic/update_pic_input.jsp").forward(request, response);
	}
	public void view(HttpServletRequest request, HttpServletResponse response)