Java项目：jsp+servlet实现的新闻发布系统

作者主页：源码空间站2022

简介：Java领域优质创作者、Java项目、学习资料、技术互助

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项目介绍

本项目分为前后台；
前台主要功能为：
首页、娱乐新闻、经济新闻、文化新闻、小道新闻、用户评价等；

后台主要功能为：
可以对新闻类别，新闻，新闻评论，友情链接等进行数据管理

环境需要

1.运行环境：最好是java jdk 1.8，我们在这个平台上运行的。其他版本理论上也可以。
2.IDE环境：IDEA，Eclipse,Myeclipse都可以。推荐IDEA;
3.tomcat环境：Tomcat 7.x,8.x,9.x版本均可
4.硬件环境：windows 7/8/10 1G内存以上；或者 Mac OS；
5.数据库：MySql 5.7版本；

6.是否Maven项目: 否；查看源码目录中是否包含pom.xml；若包含，则为maven项目，否则为非maven项目

技术栈

1. 后端：servlet

2. 前端：JSP+css+javascript

使用说明

1. 使用Navicat或者其它工具，在mysql中创建对应名称的数据库，并导入项目的sql文件；
2. 使用IDEA/Eclipse/MyEclipse导入项目，Eclipse/MyEclipse导入时，若为maven项目请选择maven;
若为maven项目，导入成功后请执行maven clean;maven install命令，然后运行；
3. 将项目中news.properties配置文件中的数据库配置改为自己的配置;
4. 运行项目，在浏览器中输入http://localhost:8080/News
后台地址:http://localhost:8080/News/user?action=login

用户名:admin,密码:123456

运行截图

前台界面

后台界面

相关代码

CommentServlet

package com.java1234.web;import java.io.IOException;
import java.sql.Connection;
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 net.sf.json.JSONObject;import com.java1234.dao.CommentDao;
import com.java1234.model.Comment;
import com.java1234.model.PageBean;
import com.java1234.util.DbUtil;
import com.java1234.util.NavUtil;
import com.java1234.util.PageUtil;
import com.java1234.util.PropertiesUtil;
import com.java1234.util.ResponseUtil;
import com.java1234.util.StringUtil;public class CommentServlet extends HttpServlet{/*** */private static final long serialVersionUID = 1L;DbUtil dbUtil=new DbUtil();CommentDao commentDao=new CommentDao();@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String action=request.getParameter("action");if("save".equals(action)){commentSave(request,response);}else if("backList".equals(action)){commentBackList(request,response);}else if("delete".equals(action)){commentDelete(request,response);}}private void commentSave(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String newsId=request.getParameter("newsId");String content=request.getParameter("content");String userIP=request.getRemoteAddr();Comment comment=new Comment(Integer.parseInt(newsId), content, userIP);Connection con=null;try{con=dbUtil.getCon();commentDao.commentAdd(con, comment);request.getRequestDispatcher("news?action=show&newsId="+newsId).forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void commentBackList(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String s_bCommentDate=request.getParameter("s_bCommentDate");String s_aCommentDate=request.getParameter("s_aCommentDate");String page=request.getParameter("page");HttpSession session=request.getSession();if(StringUtil.isEmpty(page)){page="1";session.setAttribute("s_bCommentDate", s_bCommentDate);session.setAttribute("s_aCommentDate", s_aCommentDate);}else{s_bCommentDate=(String) session.getAttribute("s_bCommentDate");s_aCommentDate=(String) session.getAttribute("s_aCommentDate");}Connection con=null;try{con=dbUtil.getCon();int total=commentDao.commentCount(con, new Comment(), s_bCommentDate, s_aCommentDate);String pageCode=PageUtil.getPagation(request.getContextPath()+"/comment?action=backList", total, Integer.parseInt(page), Integer.parseInt(PropertiesUtil.getValue("backPageSize")));PageBean pageBean=new PageBean(Integer.parseInt(page),Integer.parseInt(PropertiesUtil.getValue("backPageSize")));List<Comment> commentBackList=commentDao.commentList(con, new Comment(),pageBean,s_bCommentDate,s_aCommentDate);request.setAttribute("pageCode", pageCode);request.setAttribute("commentBackList", commentBackList);request.setAttribute("navCode", NavUtil.genNewsManageNavigation("新闻评论管理", "新闻评论维护"));request.setAttribute("mainPage", "/background/comment/commentList.jsp");request.getRequestDispatcher("/background/mainTemp.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void commentDelete(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String commentIds=request.getParameter("commentIds");Connection con=null;try{con=dbUtil.getCon();JSONObject result=new JSONObject();int delNums=commentDao.commentDelete(con, commentIds);if(delNums>0){result.put("success", true);result.put("delNums", delNums);}else{result.put("errorMsg", "删除失败");}ResponseUtil.write(result, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
}

IndexServlet

package com.java1234.web;import java.io.IOException;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import com.java1234.dao.LinkDao;
import com.java1234.dao.NewsDao;
import com.java1234.dao.NewsTypeDao;
import com.java1234.model.Link;
import com.java1234.model.News;
import com.java1234.model.NewsType;
import com.java1234.util.DbUtil;
import com.java1234.util.StringUtil;public class IndexServlet extends HttpServlet{/*** */private static final long serialVersionUID = 1L;DbUtil dbUtil=new DbUtil();NewsDao newsDao=new NewsDao();NewsTypeDao newsTypeDao=new NewsTypeDao();LinkDao linkDao=new LinkDao();@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");Connection con=null;try{con=dbUtil.getCon();List<NewsType> newsTypeList=newsTypeDao.newsTypeList(con);String sql="select * from t_news where isImage=1 order by publishDate desc limit 0,5";List<News> imageNewsList=newsDao.newsList(con, sql);request.setAttribute("imageNewsList", imageNewsList);sql="select * from t_news where isHead=1 order by publishDate desc limit 0,1 ";List<News> headNewsList=newsDao.newsList(con, sql);News headNews=headNewsList.get(0);headNews.setContent(StringUtil.Html2Text(headNews.getContent()));request.setAttribute("headNews", headNews);sql="select * from t_news where isHot=1 order by publishDate desc limit 0,8 ";List<News> hotSpotNewsList=newsDao.newsList(con, sql);request.setAttribute("hotSpotNewsList", hotSpotNewsList);List allIndexNewsList=new ArrayList();if(newsTypeList!=null && newsTypeList.size()!=0){for(int i=0;i<newsTypeList.size();i++){NewsType newsType=newsTypeList.get(i);sql="select * from t_news,t_newsType where typeId=newsTypeId and typeId="+newsType.getNewsTypeId()+" order by publishDate desc limit 0,8";List<News> oneSubList=newsDao.newsList(con, sql);allIndexNewsList.add(oneSubList);}}request.setAttribute("allIndexNewsList", allIndexNewsList);sql="select * from t_link order by orderNum ";List<Link> linkList=linkDao.linkList(con, sql);request.setAttribute("linkList", linkList);request.getRequestDispatcher("index.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
}

NewsServlet

package com.java1234.web;import java.io.File;
import java.io.IOException;
import java.sql.Connection;
import java.util.Iterator;
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 net.sf.json.JSONObject;import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;import com.java1234.dao.CommentDao;
import com.java1234.dao.NewsDao;
import com.java1234.dao.NewsTypeDao;
import com.java1234.model.Comment;
import com.java1234.model.News;
import com.java1234.model.NewsType;
import com.java1234.model.PageBean;
import com.java1234.util.DateUtil;
import com.java1234.util.DbUtil;
import com.java1234.util.NavUtil;
import com.java1234.util.PageUtil;
import com.java1234.util.PropertiesUtil;
import com.java1234.util.ResponseUtil;
import com.java1234.util.StringUtil;public class NewsServlet extends HttpServlet{/*** */private static final long serialVersionUID = 1L;DbUtil dbUtil=new DbUtil();NewsDao newsDao=new NewsDao();NewsTypeDao newsTypeDao=new NewsTypeDao();CommentDao commentDao=new CommentDao();@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String action=request.getParameter("action");if("list".equals(action)){this.newsList(request, response);}else if("show".equals(action)){this.newsShow(request, response);}else if("preSave".equals(action)){this.newsPreSave(request, response);}else if("save".equals(action)){this.newsSave(request, response);}else if("backList".equals(action)){this.newsBackList(request,response);}else if("delete".equals(action)){this.newsDelete(request,response);}}private void newsList(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String typeId=request.getParameter("typeId");String page=request.getParameter("page");if(StringUtil.isEmpty(page)){page="1";}Connection con=null;News s_news=new News();if(StringUtil.isNotEmpty(typeId)){s_news.setTypeId(Integer.parseInt(typeId));}try{con=dbUtil.getCon();int total=newsDao.newsCount(con, s_news,null,null);PageBean pageBean=new PageBean(Integer.parseInt(page),Integer.parseInt(PropertiesUtil.getValue("pageSize")));List<News> newestNewsListWithType=newsDao.newsList(con, s_news, pageBean,null,null);request.setAttribute("newestNewsListWithType", newestNewsListWithType);request.setAttribute("navCode", NavUtil.genNewsListNavigation(newsTypeDao.getNewsTypeById(con, typeId).getTypeName(), typeId));request.setAttribute("pageCode", PageUtil.getUpAndDownPagation(total, Integer.parseInt(page), Integer.parseInt(PropertiesUtil.getValue("pageSize")), typeId));request.setAttribute("mainPage", "news/newsList.jsp");request.getRequestDispatcher("foreground/newsTemp.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void newsShow(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String newsId=request.getParameter("newsId");Connection con=null;try{con=dbUtil.getCon();newsDao.newsClick(con, newsId);News news=newsDao.getNewsById(con, newsId);Comment s_comment=new Comment();s_comment.setNewsId(Integer.parseInt(newsId));List<Comment> commentList=commentDao.commentList(con, s_comment,null,null,null);request.setAttribute("commentList", commentList);request.setAttribute("news", news);request.setAttribute("pageCode", this.genUpAndDownPageCode(newsDao.getUpAndDownPageId(con, newsId)));request.setAttribute("navCode", NavUtil.genNewsNavigation(news.getTypeName(), news.getTypeId()+"",news.getTitle()));request.setAttribute("mainPage", "news/newsShow.jsp");request.getRequestDispatcher("foreground/newsTemp.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private String genUpAndDownPageCode(List<News> upAndDownPage){News upNews=upAndDownPage.get(0);News downNews=upAndDownPage.get(1);StringBuffer pageCode=new StringBuffer();if(upNews.getNewsId()==-1){pageCode.append("<p>Previous: none</p>");}else{pageCode.append("<p>Previous: <a href='news?action=show&newsId="+upNews.getNewsId()+"'>"+upNews.getTitle()+"</a></p>");}if(downNews.getNewsId()==-1){pageCode.append("<p>Next: none</p>");}else{pageCode.append("<p>Next: <a href='news?action=show&newsId="+downNews.getNewsId()+"'>"+downNews.getTitle()+"</a></p>");}return pageCode.toString();}private void newsPreSave(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String newsId=request.getParameter("newsId");Connection con=null;try{con=dbUtil.getCon();if(StringUtil.isNotEmpty(newsId)){News news=newsDao.getNewsById(con, newsId);request.setAttribute("news", news);}List<NewsType> newsTypeList=newsTypeDao.newsTypeList(con);request.setAttribute("newsTypeList", newsTypeList);if(StringUtil.isNotEmpty(newsId)){request.setAttribute("navCode", NavUtil.genNewsManageNavigation("ÐÂÎÅ¹ÜÀí", "ÐÂÎÅÐÞ¸Ä"));				}else{request.setAttribute("navCode", NavUtil.genNewsManageNavigation("ÐÂÎÅ¹ÜÀí", "ÐÂÎÅÌí¼Ó"));				}request.setAttribute("mainPage", "/background/news/newsSave.jsp");request.getRequestDispatcher("/background/mainTemp.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void newsSave(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {FileItemFactory factory=new DiskFileItemFactory();ServletFileUpload upload=new ServletFileUpload(factory);List<FileItem> items=null;try {items=upload.parseRequest(request);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}Iterator itr=items.iterator();News news=new News();while(itr.hasNext()){FileItem item=(FileItem) itr.next();if(item.isFormField()){String fieldName=item.getFieldName();if("newsId".equals(fieldName)){if(StringUtil.isNotEmpty(item.getString("utf-8"))){news.setNewsId(Integer.parseInt(item.getString("utf-8")));}}if("title".equals(fieldName)){news.setTitle(item.getString("utf-8"));}if("content".equals(fieldName)){news.setContent(item.getString("utf-8"));}if("author".equals(fieldName)){news.setAuthor(item.getString("utf-8"));}if("typeId".equals(fieldName)){news.setTypeId(Integer.parseInt(item.getString("utf-8")));}if("isHead".equals(fieldName)){news.setIsHead(Integer.parseInt(item.getString("utf-8")));}if("isImage".equals(fieldName)){news.setIsImage(Integer.parseInt(item.getString("utf-8")));}if("isHot".equals(fieldName)){news.setIsHot(Integer.parseInt(item.getString("utf-8")));}if("imageName".equals(fieldName)&&news.getImageName()==null){if(StringUtil.isNotEmpty(item.getString("utf-8"))){news.setImageName(item.getString("utf-8").split("/")[1]);}}}else if(!"".equals(item.getName())){try {String imageName=DateUtil.getCurrentDateStr();news.setImageName(imageName+"."+item.getName().split("\\.")[1]);String filePath=PropertiesUtil.getValue("imagePath")+imageName+"."+item.getName().split("\\.")[1];item.write(new File(filePath));} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}Connection con=null;try{con=dbUtil.getCon();if(news.getNewsId()!=0){newsDao.newsUpdate(con, news);}else{newsDao.newsAdd(con, news);}request.getRequestDispatcher("/news?action=backList").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void newsBackList(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String s_bPublishDate=request.getParameter("s_bPublishDate");String s_aPublishDate=request.getParameter("s_aPublishDate");String s_title=request.getParameter("s_title");String page=request.getParameter("page");HttpSession session=request.getSession();if(StringUtil.isEmpty(page)){page="1";session.setAttribute("s_bPublishDate", s_bPublishDate);session.setAttribute("s_aPublishDate", s_aPublishDate);session.setAttribute("s_title", s_title);}else{s_bPublishDate=(String) session.getAttribute("s_bPublishDate");s_aPublishDate=(String) session.getAttribute("s_aPublishDate");s_title=(String) session.getAttribute("s_title");}Connection con=null;News s_news=new News();if(StringUtil.isNotEmpty(s_title)){s_news.setTitle(s_title);}try{con=dbUtil.getCon();int total=newsDao.newsCount(con, s_news, s_bPublishDate, s_aPublishDate);String pageCode=PageUtil.getPagation(request.getContextPath()+"/news?action=backList", total, Integer.parseInt(page), Integer.parseInt(PropertiesUtil.getValue("backPageSize")));PageBean pageBean=new PageBean(Integer.parseInt(page),Integer.parseInt(PropertiesUtil.getValue("backPageSize")));List<News> newsBackList=newsDao.newsList(con, s_news,pageBean,s_bPublishDate,s_aPublishDate);request.setAttribute("pageCode", pageCode);request.setAttribute("newsBackList", newsBackList);request.setAttribute("navCode", NavUtil.genNewsManageNavigation("ÐÂÎÅ¹ÜÀí", "ÐÂÎÅÎ¬»¤"));request.setAttribute("mainPage", "/background/news/newsList.jsp");request.getRequestDispatcher("/background/mainTemp.jsp").forward(request, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private void newsDelete(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{String newsId=request.getParameter("newsId");Connection con=null;boolean delFlag;try{con=dbUtil.getCon();int delNums=newsDao.newsDelete(con, newsId);if(delNums==1){delFlag=true;}else{delFlag=false;}ResponseUtil.write(delFlag, response);}catch(Exception e){e.printStackTrace();}finally{try {dbUtil.closeCon(con);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
}

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