论坛短信息

package 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 entity.MsgUserInfo; import service.impl.MsgUserInfoServiceDaoImpl; public class MsgUserInfoServlet extends HttpServlet { /** * Constructor of the object. */ public MsgUserInfoServlet() { super(); } /** * 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 { request.setCharacterEncoding("UTF-8"); this.doPost(request, response); } /** * 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 { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); //获取操作类型 String opr=request.getParameter("opr"); //创建MsgUserInfoServiceDaoImpl对象 MsgUserInfoServiceDaoImpl msgInfosdi=new MsgUserInfoServiceDaoImpl(); if(opr.equals("login")){ //获取用户名和密码 String username=request.getParameter("username"); String password=request.getParameter("password"); //非空验证，防止js禁用 if(username==null||username.trim().equals("")||password==null||password.trim().equals("")){ request.setAttribute("error", "用户名和密码不能为空"); request.getRequestDispatcher("../index.jsp").forward(request,response); return; } //将数据传递到数据库中进行检索 MsgUserInfo mui=msgInfosdi.login(username, password); //处理检索结果，有数据登录成功，没数据则登录失败 if(mui==null){ request.setAttribute("error", "用户名或密码错误"); request.getRequestDispatcher("../index.jsp").forward(request,response); }else{ //登录成功 request.getSession().setAttribute("user",mui ); //查询该用户的所有短信息，跳转到查询短信息的处理Servlet response.sendRedirect("MsgServlet?opr=list"); //response.sendRedirect("../main.jsp"); } }else if(opr.equals("loginout")){ //实现退出功能 request.getSession().removeAttribute("user"); response.sendRedirect("../index.jsp"); }else if(opr.equals("reg")){ //实现注册功能 //获取注册输入的信息 String username=request.getParameter("username"); String password=request.getParameter("password"); String email=request.getParameter("email"); String rePassword=request.getParameter("affirm"); //做输入信息验证 if(username==null||username.trim().equals("")||password==null||password.trim().equals("")||email==null||email.trim().equals("")||rePassword==null||rePassword.trim().equals("")){ request.setAttribute("error", "请将信息填写完整，不能为空"); request.getRequestDispatcher("../regist.jsp").forward(request,response); return; } //将信息的数据保存到数据库 MsgUserInfo userInfo=new MsgUserInfo(username,password,email); int isRegist=msgInfosdi.regist(userInfo); //保存结果进行处理 if(isRegist==0){ //注册成功 request.getSession().setAttribute("error", "已经注册成功"); response.sendRedirect("../index.jsp"); }else if(isRegist==1){ //注册失败 request.setAttribute("msg", "注册失败"); request.getRequestDispatcher("../regist.jsp").forward(request, response); }else if(isRegist==-1){ //用户已经存在 request.setAttribute("msg", "用户已经存在"); request.getRequestDispatcher("../regist.jsp").forward(request, response); } }else if(opr.equals("findUsers")){ //将用出当前用户所有信息全部查询并显示 //获得当前登录用户 MsgUserInfo uInfo=(MsgUserInfo)request.getSession().getAttribute("user"); //到数据库查询用户信息 List<MsgUserInfo> toUser=msgInfosdi.findUser(uInfo.getUsername()); request.setAttribute("toUser", toUser); request.getRequestDispatcher("../send.jsp").forward(request, response); } out.flush(); out.close(); } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occurs */ public void init() throws ServletException { // Put your code here } }