registryservlet.java

servlet实现网上书店查询

package com.ghy.bookstore.user.web;

import java.io.IOException;
import java.net.URLEncoder;
import java.sql.SQLException;

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

import com.ghy.bookstore.service.BookStoreService;
import com.ghy.bookstore.service.BookStoreServiceFactory;
import com.ghy.bookstore.user.model.UserVO;

public class RegistryServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public RegistryServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public String checkCode(String code) {
		if (code == null || code.trim().equals(""))
			return "邮编为空";
		else {
			try {
				Integer.parseInt(code);
			} catch (Exception e) {
				return "邮编必须全部为数字";
			}
			return "";
		}
	}

	public String invalid(UserVO user) throws IOException,
			InstantiationException, IllegalAccessException,
			ClassNotFoundException, SQLException {

		String message = "";
		BookStoreService bsService = BookStoreServiceFactory
				.getBookStoreService();
		if (user.getName() == null || user.getName().trim().equals(""))
			message = "用户名为空";
		if (!message.equals(""))
			return message;
		if (bsService.checkUserName(user.getName()))
			message = "此用户已经存在";
		if (!message.equals(""))
			return message;
		if (user.getRealname() == null || user.getRealname().trim().equals(""))
			message = "真实姓名";
		if (!message.equals(""))
			return message;
		if (user.getPassword() == null || user.getPassword().trim().equals(""))
			message = "密码为空";
		if (!message.equals(""))
			return message;
		if (user.getPasswordcheck() == null
				|| user.getPasswordcheck().trim().equals(""))
			message = "确认密码为空";
		if (!message.equals(""))
			return message;
		if (!(user.getPassword().equals(user.getPasswordcheck())))
			message = "2次密码不符";
		if (!message.equals(""))
			return message;
		if (user.getAddress() == null || user.getAddress().trim().equals(""))
			message = "邮寄地址为空";
		if (!message.equals(""))
			return message;
		else
			return message;

	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		response.setCharacterEncoding("utf-8");
		request.setCharacterEncoding("utf-8");
		UserVO user = new UserVO();
		user.setName(request.getParameter("name"));
		user.setRealname(request.getParameter("realname"));
		user.setPassword(request.getParameter("password"));
		user.setPasswordcheck(request.getParameter("passwordcheck"));
		user.setAddress(request.getParameter("address"));
		user.setEmail(request.getParameter("email"));
		user.setType(request.getParameter("type"));

		// 调用invalid()方法,判断其他注册信息,如果不符合要求,用message返回控制信息

		String message;
		try {
			message = this.invalid(user);

			if (!message.equals("")) {
				request.getRequestDispatcher(
						"/jsp/user/registry.jsp?message="
								+ URLEncoder.encode(message, "utf-8")).forward(
						request, response);
				return;
			}
			// 如果code不符合要求,用message返回控制信息
			message = this.checkCode(request.getParameter("code"));
			if (!message.equals("")) {
				request.getRequestDispatcher(
						"/jsp/user/registry.jsp?message="
								+ URLEncoder.encode(message, "utf-8")).forward(
						request, response);
				return;
			}
			user.setCode(Integer.parseInt(request.getParameter("code")));
			// 获取和数据库的链接,建立一个新用户
			BookStoreService bsService = BookStoreServiceFactory
					.getBookStoreService();
			bsService.createUser(user);
			response.sendRedirect(request.getContextPath()
					+ "/jsp/index.jsp?message=ok");
		} catch (InstantiationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);

	}

	/**
	 * Initialization of the servlet. <br>
	 * 
	 * @throws ServletException
	 *             if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}