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

文末获取源码

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();
	
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	@Override
	protected 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 block
				e.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 block
				e.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 block
				e.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();

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	@Override
	protected 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 block
				e.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();
	
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	@Override
	protected 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 block
				e.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 block
				e.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 block
				e.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 block
			e.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 block
					e.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 block
				e.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 block
				e.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 block
				e.printStackTrace();
			}
		}
	}
}

如果也想学习本系统，下面领取。关注并回复：128jsp