javaWeb开发的放推特项目之推特发布

今天博主继续为大家介绍推特项目的其他内容，今天是推特发布功能的设计与实现

接下来博主按照页面布局的方式为大家介绍该项目的具体功能代码
进入main.jsp界面：

顶栏界面布局代码：

<div id="loader"><div><ul id="daohang"><li><span class="glyphicon glyphicon-home"></span><spanclass="bian">主页</span><div class="tishidian" style="background-color: ${info.ucolor};"></div></li><li><span class="glyphicon glyphicon-bell"></span><spanclass="bian">通知</span><div class="tishidian" id="notification"style="background-color: ${info.ucolor};"><div id="tongzhigeshu"></div></div></li><li><span class="glyphicon glyphicon-comment"></span><spanclass="bian">私信</span><div class="tishidian" style="background-color: ${info.ucolor};"></div></li></ul></div><div><img id="logo" src="img/index.ico" /><div id="search"><input type="text" class="search" id="search_two"placeholder="搜索Twitter用户" /><spanclass="glyphicon glyphicon-search sea" id="chaxun"style="color:#657786;font-size: 15px;margin-top:1px"></span></div><div class="triangle shang" id="souxianshishang"></div><div id="souxianshi"></div><div class="touxiang" id="touxiang" rel="popover"></div><div id="list"><div class="triangle shang ss"></div><div id="listlist"><div style="cursor: pointer;" id="self"><div id="uname"style="font-weight: bold; color:black;margin-top:5px;margin-left:18px;font-size:20px">${user.urealname }</div><div style="color:gray;margin-left:20px;font-size:15px"id="aitevalue">@${user.uaite }</div></div><hr><div class="listd" style="margin-top: 10px"><div><span class=" glyphicon glyphicon-user"style="margin-right: 10px"></span>个人资料</div></div><div class="listd"><span class="glyphicon glyphicon-list-alt"style="margin-right: 10px"></span>列表</div><hr><div class="listd"><span class="glyphicon glyphicon-share" style="margin-right: 10px"></span>Twitter广告</div><div class="listd"><span class=" glyphicon glyphicon-stats"style="margin-right: 10px"></span>分析</div><hr><div class="listd">设置与隐私</div><div class="listd">帮助中心</div><div class="listd" id="kuaijiejian">键盘快捷键</div><div class="listd">登出</div></div></div><button id="fatui" class="button btn btn-info"><span class="glyphicon glyphicon-send edit"></span><spanclass="bian fa">发推</span></button></div>

推特发布：

<form action="" method="post" id="mytweettwo"enctype="multipart/form-data"><div class="cont"><div class="tweet ttt" id="tuiwen2"style="box-shadow: 0 0 1px rgba(164, 217, 249, 1);"><textarea id="tweet2" class="wen xinxian" name="tuiwen"placeholder="有什么新鲜事？" style="max-height:300px;width:540px"autofocus="autofocus"></textarea><div class="bq bq2"></div></div><div class="thing add"><span class="glyphicon glyphicon-camera addThing addx"id="addpictwo"></span> <spanclass="glyphicon glyphicon-picture addThing addx"></span> <spanclass="glyphicon glyphicon-stats addThing addx"></span> <spanclass="glyphicon glyphicon-map-marker addThing addx"></span><button class="button but but_lu  btn btn-info" id="submittwo"type="button"><span class="glyphicon glyphicon-send edit_lu"></span> <spanclass="bian fa_lu">发推</span></button></div><div class="zishu zishu_lu">140</div></div><!-- <div class="triangle shang  ts" id="ts2"></div><div id="picstwo"><img src="" /> <span class="btn btn-info" id="changepictwo">更换图片</span></div><span id="pichatwo" title="取消预览">&times;</span> <input type="file"id="pictwo" accept="image/png,image/jpg" name="tpic" style="z-index:101"/> --></form>

在TweetServletTwo.java中，完成添加新推特文章，会先获取用户信息，如果上传了图片会进行图片下载，即调用Upload.java，进行图片下载
此外会统计推特文章数目
更新用户信息，即将文章加载到用户推特下

private void toNew(HttpServletRequest request, HttpServletResponse response)throws IOException, ParseException, ServletException {HttpSession session = request.getSession();Users user = (Users) session.getAttribute("user");int uid = user.getUid();String path = request.getSession().getServletContext().getRealPath("img/") + user.getUname();Map<String, String> map = Upload.upload(request, 100 * 1024 * 1024, path);String tuiwen = map.get("tuiwen");String tpic = map.get("tpic");Timestamp ttime = Times.getSystemTime();if (tpic == "") {tweetsDao.addTweet(uid, tuiwen, ttime, 0);usersinfoDao.addTweetsNum(uid);Usersinfo info = usersinfoDao.getInfos(uid);ServletContext application = session.getServletContext();Integer newTweetNum = (Integer) application.getAttribute("newTweetNum");if (newTweetNum == null) {newTweetNum = 1;} else {newTweetNum += 1;}application.setAttribute("newTweetNum", newTweetNum);session.setAttribute("info", info);return;}tweetsDao.addPicTweet(uid, tuiwen, ttime, tpic);usersinfoDao.addTweetsNum(uid);ServletContext application = session.getServletContext();Integer newTweetNum = (Integer) application.getAttribute("newTweetNum");if (newTweetNum == null) {newTweetNum = 1;} else {newTweetNum += 1;}application.setAttribute("newTweetNum", newTweetNum);Usersinfo info = usersinfoDao.getInfos(uid);session.setAttribute("info", info);toGetTweet(request, response);}

更新推特文章数目

public int addTweetsNum(int uid) {String sql = "update usersinfo set utweet = (utweet + 1) where uid = ?";int n = DBUtil.update(sql, uid);return n;}

获取用户信息

public Usersinfo getInfos(int uid) {String sql = "select id, uid, uaddress,  uabout, udate, ubg,ulogo, ufans, utweet,ufollow ,ucolor  from usersinfo where uid=?  limit 1";List<Usersinfo> list = DBUtil.query(Usersinfo.class, sql, uid);if (list.size() > 0) {return list.get(0);}return null;}

获取用户的信息，此处采用了一种类似于回卷重写的方式进行数据更新到main.jsp界面

private void toGetTweet(HttpServletRequest request, HttpServletResponse response)throws IOException, ParseException {HttpSession session = request.getSession();Users user = (Users) session.getAttribute("user");List<Concern> concernList = new ArrayList<Concern>();List<Utweets> tweetsList = new ArrayList<Utweets>();List<Utweets> tList = new ArrayList<Utweets>();if (tList != null) {tweetsList = tList;}if (user == null) {response.sendRedirect("index.jsp");return;}int uid = user.getUid();Usersinfo info = usersinfoDao.getInfos(uid);session.setAttribute("info", info);concernList = concernDao.getSuid(uid);if (concernList == null) {tweetsList = tweetsDao.getTweet(uid);if (tweetsList.size() < 1) {return;}response.getWriter().write(roll(tweetsList, uid));return;}List<Integer> uidList = new ArrayList<Integer>();for (int i = 0; i < concernList.size(); i++) {uidList.add(concernList.get(i).getS_uid());}tweetsList = tweetsDao.getTweet(uid);response.getWriter().write(roll(tweetsList, uid));}

发推界面，仍为main.jsp

<form action="tweettwo.do?method=newt" method="post" id="mytweet"enctype="multipart/form-data"><div id="send"><div class="touxiang" id="user_tou"></div><div id="sends"><div class="tweet" id="tuiwen1"style=" border :5px solid rgb(164, 217, 249)"><div id="editor"></div><textarea class="wen" name="tuiwen" id="tweet1"placeholder="有什么新鲜事？"></textarea><div class="bq" id="bq1"><!-- <img src="img/Smile.png" width="16px" height="16px" /> --></div></div><div class="thing"><span class="glyphicon glyphicon-camera addThing" id="addpic"></span><span class="glyphicon glyphicon-picture addThing"></span> <spanclass="glyphicon glyphicon-stats addThing "></span> <spanclass="glyphicon glyphicon-map-marker addThing "></span><button class="button but btn btn-info" id="submit" type="button"><span class="glyphicon glyphicon-send edit_lu"></span><spanclass="bian fa_lu">发推</span></button></div><div class="zishu">140</div></div></div>

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