javaWeb个人日记（博客）管理系统

用户可以通过用户名和密码登录系统，以便访问个人的日记信息。

懒羊羊h

1952人浏览 · 2024-03-26 04:43:46

懒羊羊h · 2024-03-26 04:43:46 发布

一、简介

在快节奏的生活中，记录生活点滴、感悟和思考是一种重要的方式。基于此，我设计了一个基于JavaWeb的个人日记本系统，旨在帮助用户轻松记录并管理自己的日记。该系统包括登录、首页、日记列表、写日记、日记分类管理和个人中心等功能，能够满足用户对个人日记记录的基本需求。

二、功能介绍

首页

首页展示了用户的日记列表，可以按照日记的分类和日期进行筛选，方便用户快速查找所需的日记。

日记列表

用户可以在日记列表页面查看自己的所有日记，每篇日记包括标题、日期、内容等信息，用户可以点击查看详细内容。

写日记

用户可以在系统中撰写新的日记，包括选择日记的分类、填写标题和内容等信息。

日记分类管理

用户可以管理自己的日记分类，包括添加新的分类、编辑分类信息、删除分类等操作，以便更好地组织和管理日记。

个人中心

个人中心提供了用户的个人信息管理功能，包括修改密码、查看登录记录等。

三、SQL分析

t_diary表分析：

diaryId：日记ID，主键，自增长，int类型。
title：日记标题，varchar(60)类型，存储日记的标题信息。
content：日记内容，text类型，存储日记的详细内容。
typeId：日记类型ID，int类型，外键关联t_diarytype表的diaryTypeId字段。
releaseDate：发布日期，datetime类型，记录日记发布的日期时间信息。

t_diarytype表分析：

diaryTypeId：日记类型ID，主键，自增长，int类型。
typeName：日记类型名称，varchar(30)类型，记录日记的类型信息，如工作类、生活类等。

t_user表分析：

userId：用户ID，主键，自增长，int类型。
userName：用户名，varchar(20)类型，存储用户的登录名。
password：密码，varchar(50)类型，存储用户的登录密码，经过加密处理。
nickName：昵称，varchar(20)类型，存储用户的昵称信息。
imageName：头像文件名，varchar(40)类型，存储用户上传的头像文件名。
mood：心情签名，varchar(200)类型，存储用户的心情签名信息。

四、程序截图

请添加图片描述

五、关键代码

UserServlet.java

package com.wishwzp.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 org.apache.tomcat.util.http.fileupload.FileItem;
import org.apache.tomcat.util.http.fileupload.FileItemFactory;
import org.apache.tomcat.util.http.fileupload.FileUploadException;
import org.apache.tomcat.util.http.fileupload.disk.DiskFileItemFactory;
import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload;
import org.apache.tomcat.util.http.fileupload.servlet.ServletRequestContext;

import com.wishwzp.dao.UserDao;
import com.wishwzp.model.User;
import com.wishwzp.util.DateUtil;
import com.wishwzp.util.DbUtil;
import com.wishwzp.util.PropertiesUtil;

/**
 * Servlet implementation class UserServlet
 */
public class UserServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	
	DbUtil dbUtil=new DbUtil();
	UserDao userDao=new UserDao();
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public UserServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		this.doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("utf-8");
		String action=request.getParameter("action");
		if("preSave".equals(action)){
			userPreSave(request,response);
		}else if("save".equals(action)){
			userSave(request,response);
		}
	}
	
	private void userPreSave(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
		request.setAttribute("mainPage", "user/userSave.jsp");
		request.getRequestDispatcher("mainTemp.jsp").forward(request, response);		
	}
	
	private void userSave(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
		
		/** 
         * 首先判断form的enctype是不是multipart/form-data 
         * 同时也判断了form的提交方式是不是post 
         * 方法：isMultipartContent(request) 
         */  
		if(ServletFileUpload.isMultipartContent(request)){  
			 System.out.println("yes");
		}
		// 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload
		FileItemFactory factory=new DiskFileItemFactory();
		//创建ServletFileUpload对象
		ServletFileUpload upload=new ServletFileUpload(factory);
		
		List<FileItem> items=null;
		try {
			items=upload.parseRequest(new ServletRequestContext(request));
		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//取得items的迭代器  
		Iterator<FileItem> itr=items==null?null:items.iterator();
		
		HttpSession session=request.getSession();
		
		User user=(User)session.getAttribute("currentUser");
		boolean imageChange=false;
		//迭代items
		while(itr.hasNext()){
			FileItem item=(FileItem)itr.next();
			 //如果传过来的是普通的表单域  
			if(item.isFormField()){
				String fieldName=item.getFieldName();
				if("nickName".equals(fieldName)){
					user.setNickName(item.getString("utf-8"));
				}
				if("mood".equals(fieldName)){
					user.setMood(item.getString("utf-8"));
				}
			}else if(!"".equals(item.getName())){
				try{
					imageChange=true;
					String imageName=DateUtil.getCurrentDateStr();
					user.setImageName(imageName+"."+item.getName().split("\\.")[1]);
					String filePath=PropertiesUtil.getValue("imagePath")+imageName+"."+item.getName().split("\\.")[1];
					item.write(new File(filePath));
				}catch(Exception e){
					e.printStackTrace();
				}
			}
		}
		
		if(!imageChange){
			user.setImageName(user.getImageName().replaceFirst(PropertiesUtil.getValue("imageFile"), ""));
		}
		
		Connection con=null;
		try {
			con=dbUtil.getCon();
			int saveNums=userDao.userUpdate(con, user);
			if(saveNums>0){
				user.setImageName(PropertiesUtil.getValue("imageFile")+user.getImageName());
				session.setAttribute("currentUser", user);
				request.getRequestDispatcher("main?all=true").forward(request, response);
			}else{
				request.setAttribute("currentUser", user);
				request.setAttribute("error", "保存失败！");
				request.setAttribute("mainPage", "user/userSave.jsp");
				request.getRequestDispatcher("mainTemp.jsp").forward(request, response);
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			try {
				dbUtil.closeCon(con);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}

MainServlet.java

package com.wishwzp.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 com.wishwzp.dao.DiaryDao;
import com.wishwzp.dao.DiaryTypeDao;
import com.wishwzp.model.Diary;
import com.wishwzp.model.DiaryType;
import com.wishwzp.model.PageBean;
import com.wishwzp.util.DbUtil;
import com.wishwzp.util.PaginationUtils;
import com.wishwzp.util.PropertiesUtil;
import com.wishwzp.util.StringUtil;

/**
 * Servlet implementation class MainServlet
 */
public class MainServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	
	DbUtil dbUtil=new DbUtil();
	DiaryDao diaryDao=new DiaryDao();
	DiaryTypeDao diaryTypeDao = new DiaryTypeDao();
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public MainServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		this.doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("utf-8");
		
		HttpSession session = request.getSession();
		String s_typeId=request.getParameter("s_typeId");
		String s_releaseDateStr=request.getParameter("s_releaseDateStr");
		String s_title=request.getParameter("s_title");
		String all=request.getParameter("all");
		
		String page=request.getParameter("page");
		Diary diary=new Diary();
		if("true".equals(all)){
			if(StringUtil.isNotEmpty(s_title)){
				diary.setTitle(s_title);
			}
			session.removeAttribute("s_releaseDateStr");
			session.removeAttribute("s_typeId");
			session.setAttribute("s_title", s_title);
		}else{
			
			if(StringUtil.isNotEmpty(s_typeId)){
				diary.setTypeId(Integer.parseInt(s_typeId));
				session.setAttribute("s_typeId", s_typeId);
				session.removeAttribute("s_releaseDateStr");
				session.removeAttribute("s_title");
			}
			if(StringUtil.isNotEmpty(s_releaseDateStr)){
				//s_releaseDateStr=new String(s_releaseDateStr.getBytes("ISO-8859-1"),"UTF-8");
				diary.setReleaseDateStr(s_releaseDateStr);
				session.setAttribute("s_releaseDateStr", s_releaseDateStr);
				session.removeAttribute("s_typeId");
				session.removeAttribute("s_title");
			}
			if(StringUtil.isEmpty(s_typeId)){
				Object o=session.getAttribute("s_typeId");
				if(o!=null){
					diary.setTypeId(Integer.parseInt((String)o));
				}
			}
			if(StringUtil.isEmpty(s_releaseDateStr)){
				Object o=session.getAttribute("s_releaseDateStr");
				if(o!=null){
					diary.setReleaseDateStr((String)o);
				}
			}
			if(StringUtil.isEmpty(s_title)){
				Object o=session.getAttribute("s_title");
				if(o!=null){
					diary.setTitle((String)o);
				}
			}
		}
		
		if(StringUtil.isEmpty(page)){
			page="1";
		}
		Connection con=null;
		//初始化为1，4
		PageBean pageBean=new PageBean(Integer.parseInt(page),Integer.parseInt(PropertiesUtil.getValue("pageSize")));
		
		try {
			con=dbUtil.getCon();
			List<Diary> diaryList=diaryDao.diaryList(con,pageBean,diary);
			int total=diaryDao.diaryCount(con,diary);
			String pageCode=PaginationUtils.getPagation(total, Integer.parseInt(page), Integer.parseInt(PropertiesUtil.getValue("pageSize")));
			request.setAttribute("pageCode", pageCode);
			request.setAttribute("diaryList", diaryList);
			
			//按日志类别显示
			List<DiaryType> diaryTypeCountList = diaryTypeDao.diaryTypeCountList(con);
			//按日志日期显示
			List<Diary> diaryCountList = diaryDao.diaryCountList(con);
			session.setAttribute("diaryTypeCountList", diaryTypeCountList);
			session.setAttribute("diaryCountList", diaryCountList);			
			request.setAttribute("mainPage", "diary/diaryList.jsp");
			request.getRequestDispatcher("mainTemp.jsp").forward(request, response);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}

LoginServlet.java

package com.wishwzp.web;

import java.io.IOException;
import java.sql.Connection;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.wishwzp.dao.UserDao;
import com.wishwzp.model.User;
import com.wishwzp.util.DbUtil;

/**
 * Servlet implementation class LoginServlet
 */
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
	DbUtil dbutil = new DbUtil();
	UserDao userDao = new UserDao();
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		this.doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("utf-8");
		String username = request.getParameter("userName");
		String password = request.getParameter("password");
		String remember = request.getParameter("remember");
		HttpSession session = request.getSession();
		Connection con =null;
		try {
			con=dbutil.getCon();
			User user=new User(username,password);
			User currentUser=userDao.login(con, user);
			if (currentUser == null) {
				request.setAttribute("user", user);
				request.setAttribute("error", "用户名或密码错误！");
				request.getRequestDispatcher("login.jsp").forward(request, response);
			}else {
				if("remember-me".equals(remember)){
					rememberMe(username,password,response);
				}
				session.setAttribute("currentUser", currentUser);
				request.getRequestDispatcher("main").forward(request, response);
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 记住密码
	 * @param userName
	 * @param password
	 * @param response
	 */
	private void rememberMe(String username,String password,HttpServletResponse response){
		Cookie user=new Cookie("user",username+"-"+password);
		user.setMaxAge(1*60*60*24*7);
		response.addCookie(user);
	}
}

六、联系与交流

q:969060742 完整程序、sql、项目辅导视频

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