新闻发布|基于JavaWeb实现新闻发布管理系统+论文+PPT（二）https://developer.aliyun.com/article/1423391
package com.action; /** * 会员注册、修改资料等 * @author Administrator * */ import java.io.IOException; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.bean.MemberBean; import com.bean.SystemBean; import com.util.Constant; import com.util.Filter; import com.util.MD5; public class MemberAction extends HttpServlet { /** * Constructor of the object. */ public MemberAction() { 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 { 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(Constant.CONTENTTYPE); request.setCharacterEncoding(Constant.CHARACTERENCODING); HttpSession session = request.getSession(); MemberBean memberBean = new MemberBean(); String method = Filter.escapeHTMLTags(request.getParameter("method").trim()); /********************************************* * 会员注册通用（检查用户名 修改密码 reg2.jsp页面跳转） *********************************************/ if(method.equals("reg2")){//会员注册 reg2.jsp String username = Filter.escapeHTMLTags(request.getParameter("username").trim()); String password = Filter.escapeHTMLTags(request.getParameter("password").trim()); String reg_type = Filter.escapeHTMLTags(request.getParameter("reg_type").trim()); request.setAttribute("username", username); request.setAttribute("password", password); request.setAttribute("reg_type", reg_type); if(username.trim().equals("admin")){ request.setAttribute("username", username); request.setAttribute("message", "非法的用户名，请重新选择！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } else{ int flag = memberBean.checkRegName(username); if(flag == Constant.SUCCESS){ if(reg_type.equals("person")){//如果是个人会员 request.getRequestDispatcher("personreg.jsp").forward(request, response); } else if(reg_type.equals("co")){//如果是企业会员 request.getRequestDispatcher("coreg.jsp").forward(request, response); } else{ request.getRequestDispatcher("index.jsp").forward(request, response); } } else if(flag == Constant.SAME_NAME){ request.setAttribute("username", username); request.setAttribute("message", "对不起，该用户名已存在，请重新选择！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } else{ request.setAttribute("message", "系统维护中，请稍后再试！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } } } else if(method.equals("checksame")){//检查注册名是否可用 String username = Filter.escapeHTMLTags(request.getParameter("username").trim()); if(username.trim().equals("admin")){ request.setAttribute("username", username); request.setAttribute("message", "非法的用户名，请重新选择！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } else{ int flag = memberBean.checkRegName(username); if(flag == Constant.SUCCESS){ request.setAttribute("username", username); request.setAttribute("message", "恭喜您，这个名字可以使用！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } else if(flag == Constant.SAME_NAME){ request.setAttribute("username", username); request.setAttribute("message", "对不起，该用户名已存在，请重新选择！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } else{ request.setAttribute("message", "系统维护中，请稍后再试！"); request.getRequestDispatcher("reg2.jsp").forward(request, response); } } } else if(method.equals("Editpwd")){//会员修改登陆密码 String member=(String)session.getAttribute("member"); String type=(String)session.getAttribute("type"); if(member==null||type==null){ response.sendRedirect("error.jsp"); } else{ String oldpwd = MD5.MD5(request.getParameter("oldpwd").trim()); String newpwd = MD5.MD5(request.getParameter("newpwd").trim()); int flag = memberBean.editPassword(member, oldpwd, newpwd); switch (flag){ case Constant.SUCCESS: request.setAttribute("message", "密码修改成功！"); request.getRequestDispatcher("member/info/editpwd.jsp").forward(request, response); break; case Constant.PASSWORD_ERROR: request.setAttribute("message", "原始密码错误，请确认权限！"); request.getRequestDispatcher("member/info/editpwd.jsp").forward(request, response); break; case Constant.SYSTEM_ERROR: request.setAttribute("message", "系统维护中，请稍后再试！"); request.getRequestDispatcher("member/info/editpwd.jsp").forward(request, response); break; } } } /********************************************* * 个人会员注册、修改资料 *********************************************/ else if(method.equals("PREG")){//个人会员详细资料 String username = Filter.escapeHTMLTags(request.getParameter("username").trim()); String password = Filter.escapeHTMLTags(request.getParameter("password").trim()); String type = "person"; String realname = Filter.escapeHTMLTags(request.getParameter("realname").trim()); String sex = Filter.escapeHTMLTags(request.getParameter("sex").trim()); String sheng = Filter.escapeHTMLTags(request.getParameter("sheng").trim()); String city = Filter.escapeHTMLTags(request.getParameter("city").trim()); String bir = Filter.escapeHTMLTags(request.getParameter("bir").trim()); String telphone = Filter.escapeHTMLTags(request.getParameter("telphone").trim()); String email = Filter.escapeHTMLTags(request.getParameter("email").trim()); String question = Filter.escapeHTMLTags(request.getParameter("question").trim()); String answer = Filter.escapeHTMLTags(request.getParameter("answer").trim()); String address = Filter.escapeHTMLTags(request.getParameter("address").trim()); String lastip = request.getRemoteAddr(); int off = 1; int flag = memberBean.personReg(username, password, type, realname, sex, bir,sheng,city, telphone, email, question, answer, lastip, off,address); if(flag == Constant.SUCCESS){ List siteList = new SystemBean().getSiteInfo(); String sitename = siteList.get(0).toString(); request.setAttribute("message", "注册成功！恭喜您成为"+sitename+"的注册会员！"); request.getRequestDispatcher("login.jsp").forward(request, response); } else{ request.setAttribute("message", "系统维护中，请稍后再试！"); request.getRequestDispatcher("personreg.jsp").forward(request, response); } } else if(method.equals("UPREGINFO")){//个人会员修改资料 String member=(String)session.getAttribute("member"); String type=(String)session.getAttribute("type"); if(member==null||type==null){ response.sendRedirect("error.jsp"); } else{ String realname = Filter.escapeHTMLTags(request.getParameter("realname").trim()); String sex = Filter.escapeHTMLTags(request.getParameter("sex").trim()); String sheng = Filter.escapeHTMLTags(request.getParameter("sheng").trim()); String city = Filter.escapeHTMLTags(request.getParameter("city").trim()); String bir = Filter.escapeHTMLTags(request.getParameter("bir").trim()); String telphone = Filter.escapeHTMLTags(request.getParameter("telphone").trim()); String email = Filter.escapeHTMLTags(request.getParameter("email").trim()); String question = Filter.escapeHTMLTags(request.getParameter("question").trim()); String answer = Filter.escapeHTMLTags(request.getParameter("answer").trim()); String address = Filter.escapeHTMLTags(request.getParameter("address").trim()); int flag = memberBean.uppersonReg(member, realname, sex, bir, sheng, city, telphone, email, question, answer,address); if(flag == Constant.SUCCESS){ request.setAttribute("message", "操作成功！"); request.getRequestDispatcher("member/info/info.jsp").forward(request, response); } else{ request.setAttribute("message", "系统维护中，请稍后再试！"); request.getRequestDispatcher("member/info/info.jsp").forward(request, response); } } } else if(method.equals("lostpwd")){ String username=request.getParameter("username"); String question=request.getParameter("question"); String answer=request.getParameter("answer"); String reg_type=request.getParameter("reg_type"); String info=memberBean.returnPwd(username, question, answer, reg_type); if(info.trim().equals("error")){ request.setAttribute("message", "信息错误！"); request.getRequestDispatcher("login.jsp").forward(request, response); } else{ request.setAttribute("message", "您的新密码为"+info+"，请登录后修改！"); request.getRequestDispatcher("login.jsp").forward(request, response); } } else{ request.getRequestDispatcher("index.jsp").forward(request, response); } } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occure */ public void init() throws ServletException { // Put your code here } }
五，项目总结
该系统的优点在于将系统一分为二，分为新闻发布系统前台和后台，分工明确，前台是给用户提供的能是用户更好的浏览新闻，后台界面是管理员管理，更新新闻，管理评论和用户信息等，其中普通用户登录前台新闻发布系统进行新闻的搜索、浏览和留言等操作，管理员登录后台新闻发布系统，进行新闻的发布、编写、修改删除等操作，对用户进行管理，能看到用户评论，对有些评论过激的用户进行删除，能一定程度上减少新闻发布系统前台的访问压力，前后台的分工也更加清楚明了，更利于各种用户的使用。
该系统使用的是MVC架构模式，能对系统的功能进行分离，对系统分成三个层次其中Model是应用程序中用于处理应用程序数据逻辑的部分是系统的模型也是核心层，View应用程序中处理数据显示的部分是系统的视图层，Controller是应用程序中处理用户交互的部分是系统的控制层，用户通过系统对数据的访问通过控制层对数据的控制之后通过模型处理再返回数据给控制层之后反馈给用户就能获取信息。
通过编写新闻发布系统我能更好的了解编程语言的强大，通过一些设计模式能是我们编写的系统更能更加强大和兼容性更加完美可拓展性更强，一款强大系统应该具有拓展性好，兼容性强，我们进行系统的设计时候多使用一些现在流行的设计模式可以是系统更加完善。
