新闻发布项目——Servlet类（doRegServlet ）

package bdqn.newsManageServlet.Servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import bdqn.newsManageServlet.Dao.UserDao;import bdqn.newsManageServlet.Dao.Impl.UserDaoImpl;import bdqn.newsManageServlet.entity.User;public class doRegServlet extends HttpServlet {/** * Destruction of the servlet. <br> */public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}/** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. *  * @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 doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html;charset=utf-8");PrintWriter out = response.getWriter();request.setCharacterEncoding("utf-8");//获取注册用户信息request.setCharacterEncoding("utf-8");String name=request.getParameter("userName");String pwd=request.getParameter("password");if(name==null||name.equals("")){//保存错误信息request.setAttribute("uerrmsg","用户名不能为空" );request.getRequestDispatcher("reg.jsp").forward(request, response);return;}else if(pwd==null||pwd.equals("")){//保存错误信息request.setAttribute("pwderrmsg","密码不能为空" );request.getRequestDispatcher("reg.jsp").forward(request, response);return;}else{//将用户信息添加到数据库中UserDao udao=new UserDaoImpl();User user=new User();user.setUserName(name);user.setUserPassword(pwd);int rel=udao.addUser(user);if(rel>0){out.print("<script>alert('注册成功！');location.href='./index.jsp';</script>");}else{out.print("<script>alert('注册失败！');location.href='./reg.jsp';</script>");}}}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}}