java新闻管理系统开源免费 javaee新闻发布系统

基于java新闻发布管理系统

新闻发布系统是基于java和mysql开发，B/S架构的系统，系统主要分类用户和管理员两个角色，其中用户主要功能是查看注册登录系统，查看新闻资讯信息，对新闻进行点评，搜索信息，修改个人信息，管理员则是对新闻栏目，新闻信息，注册用户等信息进行管理。本系统结构简单，jsp开发，适合作为java毕业设计和java课程设计来参考和学习。

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一.技术环境

JDK版本：1.8
IDE工具：eclipse
数据库: mysql 5.6
编程语言: Java
tomcat: 8.0
详细技术：HTML+CSS+JS+JSP+JAVA+Servlet+MYSQL

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二.项目文件（项目获取请看文末官网）

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三.系统功能

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四.代码示例

package servlet.admin;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import  bean.Admin;
import  bean.PageBean;
import  bean.User;
import  dao.AdminDao;
import  dao.OrderDao;
import  dao.UserDao;
import  dao.impl.AdminDaoImpl;
import  dao.impl.OrderDaoImpl;
import  dao.impl.UserDaoImpl;

import net.sf.json.JSONObject;

/**
 * Servlet implementation class UserManageServlet
 */
@WebServlet("/jsp/admin/UserManageServlet")
public class UserManageServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private static final String USERLIST_PATH="userManage/userList.jsp";//用户列表页面地址
	private static final String USERADD_PATH="userManage/userAdd.jsp";//用户增加页面地址
	private static final String USEREDIT_PATH="userManage/userEdit.jsp";//用户修改页面地址
	private static final String USERDETAIL_PATH="userManage/userDetail.jsp";//用户修改页面地址
	   
	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String action=request.getParameter("action");
		if(action==null) {
			action="list";
		}
		switch(action){
		case "list":
			userList(request,response);
			break;
		case "add":
			userAdd(request,response);
			break;
		case "update":
			userUpdate(request,response);
			break;
		case "edit":
			userEdit(request,response);
			break;
		case "del":
			userDel(request,response);
			break;
		case "batDel":
			userBatDel(request,response);
			break;
		case "find":
			adminFind(request,response);
			break;
		case "detail":
			datail(request,response);
			break;
		case "seach":
			seachUser(request,response);
		}
	}

	private void seachUser(HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException {
		UserDao ud=new UserDaoImpl();
		int curPage=1;
		String page=request.getParameter("page");
		if(page!=null){
			curPage=Integer.parseInt(page);
		}
		//获取xml中设置的每页显示大小参数
		int maxSize=Integer.parseInt(request.getServletContext().getInitParameter("maxPageSize"));
		String username = request.getParameter("username");
		PageBean pageBean=null;
		if(username != null && username != "") {
			pageBean=new PageBean(curPage,maxSize,ud.cakeReadCount(username));
			request.setAttribute("userList", ud.userList(pageBean,username));
		}else {
			pageBean=new PageBean(curPage,maxSize,ud.cakeReadCount());
			request.setAttribute("userList", ud.userList(pageBean));
		}
		request.setAttribute("pageBean", pageBean);
		
		request.getRequestDispatcher(USERLIST_PATH).forward(request, response);
		
	}

	private void datail(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String id=request.getParameter("id");
		UserDao ud=new UserDaoImpl();
		request.setAttribute("userInfo",ud.findUser(Integer.valueOf(id)));//这里回去是User对象
		request.getRequestDispatcher(USERDETAIL_PATH).forward(request, response);
		
	}

	private void userBatDel(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String ids=request.getParameter("ids");
		UserDao ud=new UserDaoImpl();
		
		if(ud.batDelUser(ids)) {
			request.setAttribute("userMessage", "用户已批量删除");
		}else {
			request.setAttribute("userMessage", "用户批量删除失败");
		}
		//用户删除成功失败都跳转到用户列表页面
		userList(request, response);//通过servlet中listUser跳到用户列表
		
	}

	private void userDel(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id=Integer.parseInt(request.getParameter("id"));
		UserDao ud=new UserDaoImpl();
		if(ud.delUser(id)) {
			request.setAttribute("userMessage", "用户已删除");
		}else {
			request.setAttribute("userMessage", "用户删除失败");
		}
		//用户删除成功失败都跳转到用户列表页面
		userList(request, response);//通过servlet中listUser跳到用户列表
		
	}

	private void userUpdate(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		User user=new User(
				Integer.parseInt(request.getParameter("userId")),
				request.getParameter("passWord"),
				request.getParameter("name"),
				request.getParameter("sex"),
				Integer.parseInt(request.getParameter("age")),
				request.getParameter("tell"),
				request.getParameter("address"),
				request.getParameter("enabled"));
		UserDao ud=new UserDaoImpl();
		if(ud.userUpdate(user)) {
			request.setAttribute("userMessage", "用户更新成功");
			userList(request, response);//通过servlet中listUser跳到用户列表
		}else {
			//更新失败跳转到修改页面
			request.setAttribute("userMessage", "用户更新失败");
			request.setAttribute("userInfo", ud.findUser(Integer.valueOf(user.getUserId())));//这里回去是Admin对象
			request.getRequestDispatcher(USEREDIT_PATH).forward(request, response);
		}
		
	}

	private void userEdit(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String id=request.getParameter("id");
		UserDao ud=new UserDaoImpl();
		request.setAttribute("userInfo",ud.findUser(Integer.valueOf(id)));//这里回去是User对象
		request.getRequestDispatcher(USEREDIT_PATH).forward(request, response);
		
	}

	private void adminFind(HttpServletRequest request, HttpServletResponse response) throws IOException {
		String userName=request.getParameter("param");
		UserDao ud=new UserDaoImpl();
		JSONObject json=new JSONObject();
		if(ud.findUser(userName)){
			json.put("info", "用户名已存在");
			json.put("status", "n");
		}else{
			json.put("info", "用户名可以使用");
			json.put("status", "y");
		}
		response.getWriter().write(json.toString());
		
	}

	private void userAdd(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		UserDao ad=new UserDaoImpl();
		User user=new User(
				request.getParameter("userName"),
				request.getParameter("passWord"),
				request.getParameter("name"),
				request.getParameter("sex"),
				Integer.parseInt(request.getParameter("age")),
				request.getParameter("tell"),
				request.getParameter("address"));
		user.setEnabled("y");//默认添加的用户启用
		//添加之前判断用户名是否在库中存在
		if(new AdminDaoImpl().findUser(user.getUserName())){
			request.setAttribute("userMessage", "用户添加失败！用户名已存在");
			request.getRequestDispatcher(USERADD_PATH).forward(request, response);
		}else{
			//执行dao层添加操作
			if(ad.userAdd(user)){
				request.setAttribute("userMessage", "用户添加成功！");
				userList(request, response);//通过servlet中listUser跳到用户列表
			}else{
				request.setAttribute("userMessage", "用户添加失败！");
				request.getRequestDispatcher(USERADD_PATH).forward(request, response);
			}
		}
	}

	private void userList(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		UserDao ud=new UserDaoImpl();
		int curPage=1;
		String page=request.getParameter("page");
		if(page!=null){
			curPage=Integer.parseInt(page);
		}
		//获取xml中设置的每页显示大小参数
		int maxSize=Integer.parseInt(request.getServletContext().getInitParameter("maxPageSize"));
		
		PageBean pageBean=new PageBean(curPage,maxSize,ud.cakeReadCount());
		
		request.setAttribute("userList", ud.userList(pageBean));
		request.setAttribute("pageBean", pageBean);
		
		request.getRequestDispatcher(USERLIST_PATH).forward(request, response);
		
	}

}

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五.项目截图