xzbkservlet.java

java web网络编程示例,原代码资源

package edu.liusong.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

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

import edu.liusong.common.URLEncoder;
import edu.liusong.dao.BoardDAO;
import edu.liusong.mo.Board;

public class xzbkServlet extends HttpServlet {
	BoardDAO boardDAO = new BoardDAO();

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		List list = boardDAO.getBoardByName(request.getParameter("name"));
		if (list.size() > 0) {
			request.setAttribute("msg", "版块名称已经存在");
			request.getRequestDispatcher("/admin/index.jsp").forward(request, response);
		}else{
			Board board=new Board();
			board.setName(request.getParameter("name"));
			int i=boardDAO.save(board);
			if(i>0){
//				request.setAttribute("msg", "添加成功");
//				request.getRequestDispatcher("/admin/index.jsp").forward(request, response);
				String []params={"msg"};
				String []values={"添加版块成功!"};
				response.sendRedirect(URLEncoder.encodeURL("index.jsp",params,values,"utf-8"));
			}else{
//				request.setAttribute("msg", "出现异常，新增版块失败");
//				request.getRequestDispatcher("/admin/index.jsp").forward(request, response);
				String []params={"msg"};
				String []values={"新增版块失败!"};
				response.sendRedirect(URLEncoder.encodeURL("index.jsp",params,values,"utf-8"));
			}
		}

	}

}