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&#160;&#160;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="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(60*60*24);
                    
                    response.addCookie(cookie);
                
                    System.out.println("登陆成功!");
                    HttpSession session= request.getSession();
                    session.setAttribute("uname", name);
                    session.setMaxInactiveInterval(60*10);
                    
                    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");
          }

 

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(0).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>

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());
    }