showbuildwebservlet.java~1~

一个公司企业网站的开发全过程,采用servlet/jsp的框架

package servlet.buildweb;

import java.io.IOException;
import java.util.Collection;

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

import servlet.messageboard.MessageBoardMgr;
import bean.BuildWebBean;
import bean.Product;

/**
 * Servlet implementation class for Servlet: ShowBookServlet
 */
public class ShowBuildWebServlet extends javax.servlet.http.HttpServlet implements
		javax.servlet.Servlet {
	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public ShowBuildWebServlet() {
		super();
	}

	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request,
	 *      HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		response.setHeader("Pragma", "No-cache");
		response.setHeader("Cache-Control", "no-cache");
		response.setDateHeader("Expires", 0);
		response.setContentType("text/html;charset=GBK");
		String _id = request.getParameter("id");
		if (_id == null) {
			request.setAttribute("error", "<h1>阅读建站信息失败!</h1>");
			try {
				request.getRequestDispatcher("/error.jsp").forward(request,
						response);
			} catch (Throwable t) {
				getServletContext().log(t.getMessage());
			}
		} else {
			int id = Integer.parseInt(_id);
			BuildWebManage mgr = new BuildWebManage();
			
			BuildWebBean buildWeb = mgr.get(id);
			if (buildWeb == null) {
				request.setAttribute("error", "<h1>不存在该建站信息!</h1>");
				try {
					request.getRequestDispatcher("/error.jsp").forward(request,
							response);
				} catch (Throwable t) {
					getServletContext().log(t.getMessage());
				}
			} else {
				request.setAttribute("buildWeb", buildWeb);
				try {
					request.getRequestDispatcher("/services/showbuildweb.jsp").forward(request,
							response);
				} catch (Throwable t) {
					getServletContext().log(t.getMessage());
				}
			}
		}
	}	
}