News Release System architecture

Realize:

Hierarchical architecture Diagram:

Key code: Console Output News content

Implementation class:

Package Cn.news.impl;import Java.sql.resultset;import Java.util.arraylist;import java.util.list;import Org.junit.test;import Cn.news.dao.basedao;import Cn.news.dao.newsdetaildao;import Cn.news.entity.NewsDetail; public class Newsdetaildaoimpl extends Basedao implements newsdetaildao{@Test public void Test () throws Exceptio        n {list<newsdetail> list=getallnews ();        for (Newsdetail item:list) {System.out.println (item.getnewscontent ()); }} @Override public list<newsdetail> getallnews () throws Exception {List<newsdetail&gt ;                List=new arraylist<newsdetail> ();                String sql= "SELECT * from Newsdetails";                ResultSet rs=executequery (SQL);                                if (Rs!=null) {while (Rs.next ()) {Newsdetail news=new newsdetail ();                News.setnewsid (Rs.getint ("newsId")); News.setnewstitle (Rs.getstring ("NewsTitle "));                News.setnewscontent (rs.getstring ("newscontent"));                News.setnewscreatedate (Rs.getdate ("newscreatedate"));                News.setnewsauthor (rs.getstring ("Newsauthor"));                                News.setnewscategoryid (Rs.getint ("Newscategoryid"));            List.add (news);    }} return list; }}

Page displays news headlines and time:

New Newsservlet class inherits HttpServlet. Key code:

Package Cn.news.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     Cn.news.entity.newsdetail;import Cn.news.impl.newsdetaildaoimpl;public class Newsservlet extends HttpServlet {/** */public void doget (HttpServletRequest request, httpservletresponse response) throws Servletexception, Ioex            ception {doPost (request,response); }/** */public void DoPost (HttpServletRequest request, httpservletresponse response) throws Serv                Letexception, IOException {//Instantiate DAO Newsdetaildaoimpl dao=new Newsdetaildaoimpl ();                        try {list<newsdetail> list=dao.getallnews ();        Request.setattribute ("list", list);        } catch (Exception e) {e.printstacktrace (); }                Request.getrequestdispatcher ("/index.jsp"). Forward (request, response); }}

index.jsp

         <ul class= "Classlist" >            <%      list<newsdetail>list= (list<newsdetail>) Request.getattribute ("list");            for (Newsdetail item:list)      {      %>      <li><a href= ' newspages/news_read.jsp ' ><%= Item.getnewstitle ()%></a><span><%=item.getnewscreatedate ()%></span></li>            <%      }            %>          <p align= "right" > Current page:[1/2]&nbsp; <a href= "#" > Next </a> <a href = "#" > End </a> </p>      </ul>

Xml

News Release System architecture