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
登录
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。
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
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
