JSP丶新闻发布会系统

新闻发布会

项目所需要的一些实现类 servlet 工具类

1.实现登录功能

前端界面的代码

 <form action="<%=path %>/LonginServlet" method="post">
       <label> 登录名 </label>
       <input type="text" name="uname" value='<%=request.getParameter("uname")==null?"":request.getParameter("uname") %>' class="login_input" />
       <label> 密  码 </label>
       <input type="password" name="upwd" value='<%=request.getParameter("upwd")==null?"":request.getParameter("upwd") %>' class="login_input" />
       <input type="submit" class="login_sub" value="登录" />
       <label id="error"> </label>
       <img src="data:images/friend_logo.gif" alt="Google" id="friend_logo" />
     </form>

登录实现类代码

 public boolean loginGetBool(Admin admin) {
       rs=  executeSelect("select *from admin where name=? and \"pwd\"=?",admin.getAname(),admin.getApwd());
       try {
         if(rs.next()){
               return true;
           }
       } catch (SQLException e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
       }
       return false;
     }

登录servlet

public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //接收请求时的编码utf-8
          request.setCharacterEncoding("utf-8");
          response.setContentType("text/html;charset=utf-8");
          String  name=request.getParameter("uname");
          String  pwd=request.getParameter("upwd");
 
                Admin admin=new Admin(name,pwd);
                System.out.println(admin.getAname());
 
               AdminDaoImpl adi=new AdminDaoImpl();
 
                String dbn=adi.login(admin);
 
                if(dbn!=null){
 
                    Cookie cookie=new Cookie("unameCookie",name);
                    cookie.setMaxAge(**);
 
                    response.addCookie(cookie);
 
                    System.out.println("登陆成功!");
                    HttpSession session= request.getSession();
                    session.setAttribute("uname", name);
                    session.setMaxInactiveInterval(*);
 
                    response.sendRedirect(request.getContextPath()+"/newspages/admin.jsp");
                }else{
                    response.sendRedirect(request.getContextPath()+"/index.jsp");
                }
    }

2.实现新增新闻

新增实现类方法

 public boolean addNews(News news) {
         Date date=new Date();
         DateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         Date time = null;
         try {
             time = format.parse(format.format(date));
         } catch (ParseException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
 
             Object[] obj={news.getNauthor(),news.getNcontent(),time,null,news.getNtitle(),news.getNtypeid()};
 
       return  executeUpdate("INSERT INTO newsrecord (`nauthor`,`ncontent`,`startTime`,`endUpdateTime`,`ntitle`,`ntypeid`) values(?,?,?,?,?,?)",obj);
 
     }

新增servlet

 public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
 
            request.setCharacterEncoding("utf-8");
            response.setContentType("text/html; charset=utf-8");
            //主题
            int ntid=Integer.parseInt(request.getParameter("ntid"));
          //标题
            String ntitle=request.getParameter("ntitle");
           //作者
           String nauthor=request.getParameter("nauthor");
           //摘要
           String nsummary=request.getParameter("nsummary");
         //内容
           String ncontent=request.getParameter("nauthor");
         //上传图片
 
           String file=request.getParameter("file");
           NewsWeb news=new NewsWeb(nauthor,ncontent,file,ntitle,ntid,nsummary);
           NewsWebDaoImpl nw=new  NewsWebDaoImpl();
 
           if(nw.addNewsWeb(news)){
               System.out.print("成功!");
               request.getSession().setAttribute("xi", "<<script type=\"text/javascript\">+alert(\"新增新闻成功!\") </script>>");
               response.sendRedirect(request.getContextPath()+"/newspages/admin.jsp");
              // out.print("");
           }else{
               System.out.print("失败!");
              request.getSession().setAttribute("xi", "<<script type=\"text/javascript\">+alert(\"新增新闻失败!\") </script>>");
               response.sendRedirect(request.getContextPath()+"/newspages/admin.jsp");
           }

新增Servlet

动态显示新闻标题内容

 

动态显示Servlet

 public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
             TopicDaoImpl dao=new    TopicDaoImpl();
 
             List<NewsType> alltopic=dao.getAllTopic();
 
             request.setAttribute("Topiclist", alltopic);
             String data=request.getParameter("tid");
 
             if (data!=null&&!data.equals("")) {
                 int tid=Integer.parseInt(data);
 
                 NewDaoImpl topicdao=new NewDaoImpl();
                 List<News> list = topicdao.getNewsById(tid);
 
                 request.setAttribute("newsList",list);
 
             }else {
                 //处理新闻相关内容
                 NewDaoImpl newsDao=new NewDaoImpl();
                 List<News> newsList = newsDao.getTopNews();
                 request.setAttribute("newsList", newsList);
             }
             //转向DoIndexServlet获取数据
 
             //准发到index.jsp
             request.getRequestDispatcher("/index.jsp").forward(request, response);
     }

动态显示实现类

 public List<NewsType> getAllTopic() {
         Connection connection=getConnection();
         String sqlString="select  typeid,typename from type";
         QueryRunner query=new QueryRunner();
         List<NewsType> list=null;
         try {
 
             list=query.query(connection, sqlString, new BeanListHandler<NewsType>(NewsType.class));
 
             System.out.println(list.get().getTypeName());
         } catch (SQLException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return list;
     }
 
 public List<News> getTopNews() {
         Connection connection=getConnection();
         QueryRunner query=new    QueryRunner();
         //select * from newsrecord where rownum<=3   orcal查询前三条语句
         String sqlString="select * from newsrecord where nid limit 3";
         List<News> list=null;
         try {
             list=query.query(connection, sqlString, new BeanListHandler<News>(News.class));
         } catch (SQLException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return list;
     }

前端代码

  <div class="content">
       <ul class="class_date">
         <li id='class_month'>
               <c:forEach var="item"  items="${requestScope.Topiclist}">
                  <a style="color:red;font-size:14px;" href='${pageContext.request.contextPath }/DoIndexServlet?tid=${item.typeid}'><!-- 从域中取值 -->
                     ${item.typeName}
                  </a>
              </c:forEach>
         </li>
 
       </ul>
       <ul class="classlist">
             <c:forEach var="item" items="${newsList }">
                <li><a href='newspages/news_read.jsp'>${item.ntitle }</a><span>${item.startTime }  </span></li>
             </c:forEach>
 
             <p align="right"> 当前页数:[1/2]&nbsp; <a href="/DoIndexServlet">下一页</a> <a href="#">末页</a> </p>
           </ul>
     </div>

添加新闻主题

新增新闻类型Servlet

 public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
 
           request.setCharacterEncoding("utf-8");
           response.setContentType("text/html; charset=utf-8");
           String tname=request.getParameter("tname");
           NewsType newsType=new NewsType(tname);
           NewsTypeDaoImpl ntdi=new NewsTypeDaoImpl();
           if (ntdi.addNewsType(newsType)) {
               request.getSession().setAttribute("xi", "<<script type=\"text/javascript\">+alert(\"新增新闻类型成功!\") </script>>");
           }else{
               System.out.println("");
               request.getSession().setAttribute("xi", "<<script type=\"text/javascript\">+alert(\"新增新闻类型失败!\") </script>>");
           }
           response.sendRedirect("/news/util/addnewstype.jsp");
 
     }

新增类型实现类

 public boolean addNewsType(NewsType newsType){
       return    executeUpdate("insert into type(typename)
            values(?)", newsType.getTypeName());
     }