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Java實戰項目

文章目錄

• • Java實戰項目
• 一、開發介紹
• • 1.1 開發環境
• 二、系統介紹
• • 2.1圖片展示
• 三、部分代碼設計
• • 3.1.部分代碼如下：

一、開發介紹

1.1 開發環境

• 開發語言：Java
• 數據庫：MySQL
• 系統架構：B/S
• 后端：Springboot/SSM(Spring+SpringMVC+Mybatis)
• 前端：Vue
• 工具：IDEA或者Eclipse、JDK1.8、Maven

二、系統介紹

2.1圖片展示

用戶注冊登錄模塊：
首頁模塊：餐廳模塊：
小吃排行：
個人資料：
我的訂單模塊：
餐廳管理員模塊：餐廳管理、美食管理、留言管理、座位管理、座位預定管理
餐廳管理模塊：餐廳管理員上傳餐廳信息、修改功能；
美食管理模塊：餐廳管理員新增美食菜品信息、編輯、刪除功能；
留言管理模塊：查看用戶評價回復功能；
座位管理模塊：新增桌位信息、修改、刪除功能；
座位預定管理：審核用戶預定的座位是否同意；
管理員模塊：餐廳信息管理、用戶管理、美食類別管理
餐廳信息管理：新增餐廳信息、查看管理員信息、編輯、刪除功能；
用戶管理模塊：查看用戶信息、刪除功能；
美食類別管理模塊：新增美食類型信息、刪除功能；

三、部分代碼設計

3.1.部分代碼如下：

分頁插件代碼package com.utils;import java.io.Serializable; import java.util.List; import java.util.Map;import com.baomidou.mybatisplus.plugins.Page;/*** 分頁工具類*/ public class PageUtils implements Serializable {private static final long serialVersionUID = 1L;//總記錄數private long total;//每頁記錄數private int pageSize;//總頁數private long totalPage;//當前頁數private int currPage;//列表數據private List<?> list;/*** 分頁* @param list 列表數據* @param totalCount 總記錄數* @param pageSize 每頁記錄數* @param currPage 當前頁數*/public PageUtils(List<?> list, int totalCount, int pageSize, int currPage) {this.list = list;this.total = totalCount;this.pageSize = pageSize;this.currPage = currPage;this.totalPage = (int)Math.ceil((double)totalCount/pageSize);}/*** 分頁*/public PageUtils(Page<?> page) {this.list = page.getRecords();this.total = page.getTotal();this.pageSize = page.getSize();this.currPage = page.getCurrent();this.totalPage = page.getPages();}/** 空數據的分頁*/public PageUtils(Map<String, Object> params) {Page page =new Query(params).getPage();new PageUtils(page);} <script type="text/javascript">var vue = new Vue({el: '#app',data: {menu: menu,roles: []},created(){for(let item in this.menu) {if(this.menu[item].hasFrontLogin=='是') {this.roles.push(this.menu[item]);}} },methods: {jump(url) {jump(url)}}})layui.use(['layer', 'element', 'carousel', 'form', 'http', 'jquery'], function() {var layer = layui.layer;var element = layui.element;var carousel = layui.carousel;var form = layui.form;var http = layui.http;var jquery = layui.jquery;function randomString() {var len = 4;var chars = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k','l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v','w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G','H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R','S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '0', '1', '2','3', '4', '5', '6', '7', '8', '9']var colors = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']var sizes = ['14', '15', '16', '17', '18']var output = []for (var i = 0; i < len; i++) {// 隨機驗證碼var key = Math.floor(Math.random() * chars.length)codes[i].num = chars[key]// 隨機驗證碼顏色var code = '#'for (var j = 0; j < 6; j++) {var key = Math.floor(Math.random() * colors.length)code += colors[key]}codes[i].color = code// 隨機驗證碼方向var rotate = Math.floor(Math.random() * 45)var plus = Math.floor(Math.random() * 2)if (plus == 1) rotate = '-' + rotatecodes[i].rotate = 'rotate(' + rotate + 'deg)'// 隨機驗證碼字體大小var size = Math.floor(Math.random() * sizes.length)codes[i].size = sizes[size] + 'px'}var str = ''for(var i = 0;i<codes.length;i++) {str += '<span style="color:' + codes[i].color + ';transform:' + codes[i].rotate + ';fontSize:' + codes[i].size + ';padding: 0 3px;display:inline-block">'+codes[i].num+'</span>'}jquery('#nums').html('').append(str);}jquery('#nums').click(function(){randomString();})randomString();// 登錄form.on('submit(login)', function(data) {data = data.field;if (vue.roles.length!=1) {if (!data.role) {layer.msg('請選擇登錄用戶類型', {time: 2000,icon: 5});return false;}} else {data.role = vue.roles[0].tableName;}http.request(data.role + '/login', 'get', data, function(res) {layer.msg('登錄成功', {time: 2000,icon: 6});// 登錄憑證localStorage.setItem('Token', res.token);var roleName = "";if(typeof(jquery('#role:checked').attr('title')) == "undefined") {roleName = vue.roles[0].roleName;} else {roleName = jquery('#role:checked').attr('title');}localStorage.setItem('role', roleName);// 當前登錄用戶角色localStorage.setItem('userTable', data.role);localStorage.setItem('sessionTable', data.role);// 用戶名稱localStorage.setItem('adminName', data.username);http.request(data.role + '/session', 'get', {}, function(res) {// 用戶idlocalStorage.setItem('userid', res.data.id);if(res.data.vip) {localStorage.setItem('vip', res.data.vip);}// 路徑訪問設置window.location.href = '../../index.html';})});return false});});/*** 跳轉登錄* @param {Object} tablename*/function registerClick(tablename) {window.location.href = '../' + tablename + '/register.html?tablename=' + tablename;}</script> /*** Mybatis-Plus工具類*/ public class MPUtil {public static final char UNDERLINE = '_';//mybatis plus allEQ 表達式轉換public static Map allEQMapPre(Object bean,String pre) {Map<String, Object> map =BeanUtil.beanToMap(bean);return camelToUnderlineMap(map,pre);}//mybatis plus allEQ 表達式轉換public static Map allEQMap(Object bean) {Map<String, Object> map =BeanUtil.beanToMap(bean);return camelToUnderlineMap(map,"");}public static Wrapper allLikePre(Wrapper wrapper,Object bean,String pre) {Map<String, Object> map =BeanUtil.beanToMap(bean);Map result = camelToUnderlineMap(map,pre);return genLike(wrapper,result);}public static Wrapper allLike(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);return genLike(wrapper,result);}public static Wrapper genLike( Wrapper wrapper,Map param) {Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry<String, Object> entry = it.next();String key = entry.getKey();String value = (String) entry.getValue();wrapper.like(key, value);i++;}return wrapper;}public static Wrapper likeOrEq(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);return genLikeOrEq(wrapper,result);}public static Wrapper genLikeOrEq( Wrapper wrapper,Map param) {Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry<String, Object> entry = it.next();String key = entry.getKey();if(entry.getValue().toString().contains("%")) {wrapper.like(key, entry.getValue().toString().replace("%", ""));} else {wrapper.eq(key, entry.getValue());}i++;}return wrapper;}public static Wrapper allEq(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);return genEq(wrapper,result);}public static Wrapper genEq( Wrapper wrapper,Map param) {Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry<String, Object> entry = it.next();String key = entry.getKey();wrapper.eq(key, entry.getValue());i++;}return wrapper;}public static Wrapper between(Wrapper wrapper,Map<String, Object> params) {for(String key : params.keySet()) {String columnName = "";if(key.endsWith("_start")) {columnName = key.substring(0, key.indexOf("_start"));if(StringUtils.isNotBlank(params.get(key).toString())) {wrapper.ge(columnName, params.get(key));}}if(key.endsWith("_end")) {columnName = key.substring(0, key.indexOf("_end"));if(StringUtils.isNotBlank(params.get(key).toString())) {wrapper.le(columnName, params.get(key));}}}return wrapper;}public static Wrapper sort(Wrapper wrapper,Map<String, Object> params) {String order = "";if(params.get("order") != null && StringUtils.isNotBlank(params.get("order").toString())) {order = params.get("order").toString();}if(params.get("sort") != null && StringUtils.isNotBlank(params.get("sort").toString())) {if(order.equalsIgnoreCase("desc")) {wrapper.orderDesc(Arrays.asList(params.get("sort")));} else {wrapper.orderAsc(Arrays.asList(params.get("sort")));}}return wrapper;}/*** 駝峰格式字符串轉換為下劃線格式字符串** @param param* @return*/public static String camelToUnderline(String param) {if (param == null || "".equals(param.trim())) {return "";}int len = param.length();StringBuilder sb = new StringBuilder(len);for (int i = 0; i < len; i++) {char c = param.charAt(i);if (Character.isUpperCase(c)) {sb.append(UNDERLINE);sb.append(Character.toLowerCase(c));} else {sb.append(c);}}return sb.toString();}public static void main(String[] ages) {System.out.println(camelToUnderline("ABCddfANM"));}public static Map camelToUnderlineMap(Map param, String pre) {Map<String, Object> newMap = new HashMap<String, Object>();Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();while (it.hasNext()) {Map.Entry<String, Object> entry = it.next();String key = entry.getKey();String newKey = camelToUnderline(key);if (pre.endsWith(".")) {newMap.put(pre + newKey, entry.getValue());} else if (StringUtils.isEmpty(pre)) {newMap.put(newKey, entry.getValue());} else {newMap.put(pre + "." + newKey, entry.getValue());}}return newMap;} }

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