Syntax error on token "catch", delete this token

当遇到'Syntax error on token "catch", delete this token'的错误时,可以通过在项目上右键选择validate来消除文件报错,但内容中的红线提醒仍然存在。这表明代码中可能有未正确处理的catch关键字。" 132793709,8194232,Ubuntu环境下ORB-SLAM2的编译与安装指南,"['SLAM', 'ORB-SLAM2', '计算机视觉', 'OpenGL', 'C++']

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错误信息:Syntax error on token "catch", delete this token

解决办法:

点击项目右键选择validate 文件报错消失,但是内容还是会有红线提醒。

DataManager.js:45 Uncaught SyntaxError: Unexpected token '{' (at DataManager.js:45:10)/** * 数据管理器类,负责与后端API通信并管理数据 */ class DataManager { constructor(baseUrl) { this.baseUrl = baseUrl; this.data = { bancais: [], dingdans: [], mupis: [], chanpins: [], kucuns: [], dingdan_chanpin_zujians: [], chanpin_zujians: [], zujians: [], caizhis: [], dingdan_chanpins: [], users: [] }; this.isSyncing = false; this.lastSync = null; // 回调注册表 this.callbacks = { // 全局回调 all: [], // 按实体类型分类的回调 bancais: [], dingdan: [], mupi: [], chanpin: [], kucun: [], dingdan_chanpin_zujian: [], chanpin_zujian: [], zujian: [], caizhi: [], dingdan_chanpin: [], user: [] // ...其他实体 }; } export { DataManager }; /** * 获取所有数据 * @returns {Promise<boolean>} 是否成功 */ async fetchAll() { try { const response = await fetch(`${this.baseUrl}/app/all`); if (!response.ok) throw new Error('Network response was not ok'); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || 'API error'); // 更新本地数据 Object.keys(this.data).forEach(key => { if (result.data[key]) { this.data[key] = result.data[key]; } }); this.lastSync = new Date(); return true; } catch (error) { console.error('Fetch error:', error); return false; } } /** * 注册回调函数 * @param {string} entity - 实体类型(如'bancai')或'all'表示全局回调 * @param {Function} callback - 回调函数,参数为(operation, data) */ registerCallback(entity, callback) { if (!this.callbacks[entity]) { this.callbacks[entity] = []; } this.callbacks[entity].push(callback); } /** * 移除回调函数 * @param {string} entity - 实体类型 * @param {Function} callback - 要移除的回调函数 */ unregisterCallback(entity, callback) { if (!this.callbacks[entity]) return; const index = this.callbacks[entity].indexOf(callback); if (index !== -1) { this.callbacks[entity].splice(index, 1); } } /** * 触发回调 * @param {string} operation - 操作类型('add', 'update', 'delete') * @param {string} entity - 实体类型 * @param {Object} data - 相关数据 */ triggerCallbacks(operation, entity, data) { // 触发全局回调 this.callbacks.all.forEach(cb => cb(operation, entity, data)); // 触发特定实体回调 if (this.callbacks[entity]) { this.callbacks[entity].forEach(cb => cb(operation, data)); } } /** * 执行CRUD操作并触发回调 */ async crudOperation(operation, entity, data) { try { const response = await fetch(`${this.baseUrl}/app/${operation}/${entity}`, { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) }); if (!response.ok) throw new Error('Network response was not ok'); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || 'API error'); // 触发操作成功的回调 this.triggerCallbacks(operation, entity, data); // 自动同步数据 this.syncData(); return result; } catch (error) { console.error('CRUD error:', error); // 触发操作失败的回调 this.triggerCallbacks(`${operation}_error`, entity, { data, error: error.message }); throw error; } } /** * 执行CRUD操作 * @param {string} operation - 'add', 'delete', 'update' * @param {string} entity - 实体名称(小写) * @param {Object} data - 要发送的数据 * @returns {Promise<Object>} 响应结果 */ async crudOperation(operation, entity, data) { try { const response = await fetch(`${this.baseUrl}/app/${operation}/${entity}`, { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) }); if (!response.ok) throw new Error('Network response was not ok'); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || 'API error'); // 触发操作成功的回调 this.triggerCallbacks(operation, entity, data); // 自动同步数据 this.syncData(); return result; } catch (error) { console.error('CRUD error:', error); // 触发操作失败的回调 this.triggerCallbacks(`${operation}_error`, entity, { data, error: error.message }); throw error; } } /** * 自动同步数据(防止频繁请求) */ async syncData() { if (this.isSyncing) return; // 距离上次同步超过5秒才执行新同步 if (this.lastSync && new Date() - this.lastSync < 5000) { setTimeout(() => this.syncData(), 5000 - (new Date() - this.lastSync)); return; } this.isSyncing = true; try { await this.fetchAll(); } finally { this.isSyncing = false; } } /** * 添加实体 * @param {string} entity - 实体名称 * @param {Object} data - 实体数据 */ async addEntity(entity, data) { return this.crudOperation('add', entity, data); } /** * 更新实体 * @param {string} entity - 实体名称 * @param {Object} data - 实体数据(必须包含id) */ async updateEntity(entity, data) { return this.crudOperation('update', entity, data); } /** * 删除实体 * @param {string} entity - 实体名称 * @param {number} id - 实体ID */ async deleteEntity(entity, id) { return this.crudOperation('delete', entity, {id}); } } // 创建单例实例 const dataManager = new DataManager('http://your-backend-url.com'); // 初始化时获取所有数据 dataManager.fetchAll().then(() => { console.log('Initial data loaded'); }); // 导出数据对象,外部可以直接访问 data.bancais, data.dingdans 等 export const data = dataManager.data; // 导出操作方法 export const addEntity = dataManager.addEntity.bind(dataManager); export const updateEntity = dataManager.updateEntity.bind(dataManager); export const deleteEntity = dataManager.deleteEntity.bind(dataManager); export const fetchAll = dataManager.fetchAll.bind(dataManager);
06-15
------------------------/data/ DataManager .js ------------------------ /** 数据管理器类,负责与后端API通信并管理数据 */ class DataManager { constructor(baseUrl) { this.baseUrl = baseUrl; this.data = { bancais: [], dingdans: [], mupis: [], chanpins: [], kucuns: [], dingdan_chanpin_zujians: [], chanpin_zujians: [], zujians: [], caizhis: [], dingdan_chanpins: [], users: [] }; this.isSyncing = false; this.lastSync = null; // 回调注册表 this.callbacks = { // 全局回调 all: [], // 按实体类型分类的回调 bancais: [], dingdan: [], mupi: [], chanpin: [], kucun: [], dingdan_chanpin_zujian: [], chanpin_zujian: [], zujian: [], caizhi: [], dingdan_chanpin: [], user: [] // …其他实体 }; } /** 获取所有数据 @returns {Promise<boolean>} 是否成功 */ async fetchAll() { try { const response = await fetch(${this.baseUrl}/app/all); if (!response.ok) throw new Error(‘Network response was not ok’); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || ‘API error’); // 更新本地数据 Object.keys(this.data).forEach(key => { if (result.data[key]) { this.data[key] = result.data[key]; } }); this.lastSync = new Date(); return true; } catch (error) { console.error(‘Fetch error:’, error); return false; } } /** 注册回调函数 @param {string} entity - 实体类型(如’bancai’)或’all’表示全局回调 @param {Function} callback - 回调函数,参数为(operation, data) */ registerCallback(entity, callback) { if (!this.callbacks[entity]) { this.callbacks[entity] = []; } this.callbacks[entity].push(callback); } /** 移除回调函数 @param {string} entity - 实体类型 @param {Function} callback - 要移除的回调函数 */ unregisterCallback(entity, callback) { if (!this.callbacks[entity]) return; const index = this.callbacks[entity].indexOf(callback); if (index !== -1) { this.callbacks[entity].splice(index, 1); } } /** 触发回调 @param {string} operation - 操作类型(‘add’, ‘update’, ‘delete’) @param {string} entity - 实体类型 @param {Object} data - 相关数据 */ triggerCallbacks(operation, entity, data) { // 触发全局回调 this.callbacks.all.forEach(cb => cb(operation, entity, data)); // 触发特定实体回调 if (this.callbacks[entity]) { this.callbacks[entity].forEach(cb => cb(operation, data)); } } /** 执行CRUD操作并触发回调 */ async crudOperation(operation, entity, data) { try { const response = await fetch(${this.baseUrl}/app/${operation}/${entity}, { method: ‘POST’, headers: {‘Content-Type’: ‘application/json’}, body: JSON.stringify(data) }); if (!response.ok) throw new Error(‘Network response was not ok’); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || ‘API error’); // 触发操作成功的回调 this.triggerCallbacks(operation, entity, data); // 自动同步数据 this.syncData(); return result; } catch (error) { console.error(‘CRUD error:’, error); // 触发操作失败的回调 this.triggerCallbacks(${operation}_error, entity, { data, error: error.message }); throw error; } } /** 执行CRUD操作 @param {string} operation - ‘add’, ‘delete’, ‘update’ @param {string} entity - 实体名称(小写) @param {Object} data - 要发送的数据 @returns {Promise<Object>} 响应结果 */ async crudOperation(operation, entity, data) { try { const response = await fetch(${this.baseUrl}/app/${operation}/${entity}, { method: ‘POST’, headers: {‘Content-Type’: ‘application/json’}, body: JSON.stringify(data) }); if (!response.ok) throw new Error('Network response was not ok'); const result = await response.json(); if (result.status !== 200) throw new Error(result.text || 'API error'); // 触发操作成功的回调 this.triggerCallbacks(operation, entity, data); // 自动同步数据 this.syncData(); return result; } catch (error) { console.error(‘CRUD error:’, error); // 触发操作失败的回调 this.triggerCallbacks(${operation}_error, entity, { data, error: error.message }); throw error; } } /** 自动同步数据(防止频繁请求) */ async syncData() { if (this.isSyncing) return; // 距离上次同步超过5秒才执行新同步 if (this.lastSync && new Date() - this.lastSync < 5000) { setTimeout(() => this.syncData(), 5000 - (new Date() - this.lastSync)); return; } this.isSyncing = true; try { await this.fetchAll(); } finally { this.isSyncing = false; } } /** 添加实体 @param {string} entity - 实体名称 @param {Object} data - 实体数据 */ async addEntity(entity, data) { return this.crudOperation(‘add’, entity, data); } /** 更新实体 @param {string} entity - 实体名称 @param {Object} data - 实体数据(必须包含id) */ async updateEntity(entity, data) { return this.crudOperation(‘update’, entity, data); } /** 删除实体 @param {string} entity - 实体名称 @param {number} id - 实体ID */ async deleteEntity(entity, id) { return this.crudOperation(‘delete’, entity, {id}); } } // 创建单例实例 const dataManager = new DataManager(‘http://your-backend-url.com’); // 初始化时获取所有数据 dataManager.fetchAll().then(() => { console.log(‘Initial data loaded’); }); // 导出数据对象,外部可以直接访问 data.bancais, data.dingdans 等 export const data = dataManager.data; // 导出操作方法 export const addEntity = dataManager.addEntity.bind(dataManager); export const updateEntity = dataManager.updateEntity.bind(dataManager); export const deleteEntity = dataManager.deleteEntity.bind(dataManager); export const fetchAll = dataManager.fetchAll.bind(dataManager); ------------------------/js/ bancai.js ------------------------ $(document).ready(function() { const modal = new bootstrap.Modal(‘#bancaiModal’); let currentMode = ‘view’; // ‘view’, ‘edit’ 或 ‘add’ let caizhiList = []; // 存储材质列表 let mupiList = []; // 存储木皮列表 let currentSearchText = ‘’; // 当前搜索文本 // 导入 DataManager import { data, addEntity, updateEntity, deleteEntity, fetchAll } from '../js/DataManager.js'; // 初始化函数 async function initialize() { // 等待数据加载完成 await fetchAll(); // 更新材质和木皮选项 updateOptions(); // 渲染板材表格 refreshTable(); } // 更新材质和木皮选项 function updateOptions() { // 获取材质列表 caizhiList = data.caizhis; updateSelectOptions('#caizhiSelect', caizhiList); // 获取木皮列表并格式化名称 mupiList = data.mupis.map(m => ({ ...m, name: m.you ? `${m.name}(油漆)` : m.name })); updateSelectOptions('#mupi1Select', mupiList); updateSelectOptions('#mupi2Select', mupiList); } // 更新下拉框选项 function updateSelectOptions(selector, data) { $(selector).empty(); data.forEach(item => { $(selector).append(`<option value="${item.id}">${item.name}</option>`); }); } // 刷新表格(带搜索功能) function refreshTable() { const filteredData = filterBancais(currentSearchText); renderBancaiTable(filteredData); } // 搜索过滤函数 function filterBancais(searchText) { if (!searchText) return data.bancais; return data.bancais.filter(bancai => { const caizhiName = bancai.caizhi?.name || ''; const mupi1Name = bancai.mupi1?.name || ''; const mupi2Name = bancai.mupi2?.name || ''; const houdu = bancai.houdu.toString(); const searchFields = [ caizhiName.toLowerCase(), mupi1Name.toLowerCase(), mupi2Name.toLowerCase(), houdu ]; return searchFields.some(field => field.includes(searchText.toLowerCase()) ); }); } // 渲染板材表格 function renderBancaiTable(bancais) { const $tbody = $('#bancaiTable tbody'); $tbody.empty(); bancais.forEach(bancai => { const caizhiName = bancai.caizhi?.name || '未知'; const mupi1Name = bancai.mupi1?.name || '未知'; const mupi2Name = bancai.mupi2?.name || '未知'; const row = ` <tr data-id="${bancai.id}"> <td>${bancai.id}</td> <td>${caizhiName}</td> <td>${mupi1Name} ${bancai.mupi1?.you ? '(油漆)' : ''}</td> <td>${mupi2Name} ${bancai.mupi2?.you ? '(油漆)' : ''}</td> <td>${bancai.houdu}</td> <td> <button class="btn btn-sm btn-info view-btn">查看</button> <button class="btn btn-sm btn-warning edit-btn">编辑</button> <button class="btn btn-sm btn-danger delete-btn">删除</button> </td> </tr> `; $tbody.append(row); }); // 绑定行按钮事件 bindTableEvents(); } // 绑定表格事件 function bindTableEvents() { // 查看按钮 $('.view-btn').click(function() { const id = $(this).closest('tr').data('id'); openModalForBancai(id, 'view'); }); // 编辑按钮 $('.edit-btn').click(function() { const id = $(this).closest('tr').data('id'); openModalForBancai(id, 'edit'); }); // 删除按钮 $('.delete-btn').click(function() { const id = $(this).closest('tr').data('id'); deleteBancai(id); }); } // 添加板材按钮点击事件 $('#addBancaiBtn').click(function() { // 清空表单 $('#bancaiForm')[0].reset(); $('#modalTitle').text('添加新板材'); currentMode = 'add'; // 启用表单 enableForm(true); // 更新选项(确保下拉框是最新的) updateOptions(); modal.show(); }); // 搜索按钮事件 $('#searchBtn').click(function() { currentSearchText = $('#searchInput').val(); refreshTable(); }); // 输入框实时搜索 $('#searchInput').on('input', function() { currentSearchText = $(this).val(); refreshTable(); }); // 打开弹窗显示板材数据 function openModalForBancai(id, mode) { const bancai = data.bancais.find(b => b.id === id); if (!bancai) return; currentMode = mode; // 填充表单 $('#bancaiId').val(bancai.id); $('#caizhiSelect').val(bancai.caizhi.id); $('#mupi1Select').val(bancai.mupi1.id); $('#mupi2Select').val(bancai.mupi2.id); $('#houdu').val(bancai.houdu); // 设置标题 $('#modalTitle').text(mode === 'view' ? '板材详情' : '编辑板材'); // 设置表单状态 enableForm(mode === 'edit'); // 更新选项(确保下拉框是最新的) updateOptions(); modal.show(); } // 启用/禁用表单 function enableForm(enable) { $('#caizhiSelect').prop('disabled', !enable); $('#mupi1Select').prop('disabled', !enable); $('#mupi2Select').prop('disabled', !enable); $('#houdu').prop('disabled', !enable); $('#saveBtn').toggle(enable); } // 保存按钮点击事件 $('#saveBtn').click(async function() { const formData = { id: $('#bancaiId').val(), caizhiId: parseInt($('#caizhiSelect').val()), mupi1Id: parseInt($('#mupi1Select').val()), mupi2Id: parseInt($('#mupi2Select').val()), houdu: parseFloat($('#houdu').val()) }; try { if (currentMode === 'add') { await addEntity('bancais', formData); } else { await updateEntity('bancais', formData); } // 刷新表格 refreshTable(); modal.hide(); } catch (error) { console.error('操作失败:', error); alert('操作失败,请重试'); } }); // 删除板材 async function deleteBancai(id) { if (!confirm('确定要删除此板材吗?')) return; try { await deleteEntity('bancais', id); refreshTable(); } catch (error) { console.error('删除失败:', error); alert('删除失败,请重试'); } } // 初始化应用 initialize(); }); ------------------------/main/ bancai.html ------------------------ <!DOCTYPE html> <html lang=“en”> <head> <meta charset=“UTF-8”> <meta name=“viewport” content=“width=device-width, initial-scale=1.0”> <title>板材数据管理</title> <!-- 引入 Bootstrap CSS --> <link href=“https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css” rel=“stylesheet”> <!-- 引入 jQuery --> <script src=“https://code.jquery.com/jquery-3.6.0.min.js”></script> </head> <body> <div class=“container mt-4”> <h1 class=“mb-4”>板材数据管理</h1> <!-- 搜索框 --> <div class="row mb-3"> <div class="col-md-6"> <div class="input-group"> <input type="text" class="form-control" id="searchInput" placeholder="搜索材质、木皮或厚度..."> <button class="btn btn-outline-secondary" type="button" id="searchBtn"> <i class="bi bi-search"></i> 搜索 </button> </div> </div> <div class="col-md-6 text-end"> <button class="btn btn-primary" id="addBancaiBtn">添加新板材</button> </div> </div> <table class="table table-striped mt-3" id="bancaiTable"> <thead> <tr> <th>ID</th> <th>材质</th> <th>木皮1</th> <th>木皮2</th> <th>厚度</th> <th>操作</th> </tr> </thead> <tbody> <!-- 数据将通过 DataManager 加载 --> </tbody> </table> </div> <!-- 模态框保持不变 --> <div class=“modal fade” id=“bancaiModal” tabindex=“-1” aria-hidden=“true”> <!-- … 原有模态框内容 … --> </div> <!-- 查看/编辑弹窗 --> <div class=“modal fade” id=“bancaiModal” tabindex=“-1” aria-hidden=“true”> <div class=“modal-dialog modal-lg”> <div class=“modal-content”> <div class=“modal-header”> <h5 class=“modal-title” id=“modalTitle”>板材详情</h5> <button type=“button” class=“btn-close” data-bs-dismiss=“modal” aria-label=“Close”></button> </div> <div class=“modal-body”> <form id=“bancaiForm”> <input type=“hidden” id=“bancaiId”> <div class=“mb-3”> <label class=“form-label”>材质</label> <select class=“form-select” id=“caizhiSelect” name=“caizhi”></select> </div> <div class=“mb-3”> <label class=“form-label”>木皮1</label> <select class=“form-select” id=“mupi1Select” name=“mupi1”></select> </div> <div class=“mb-3”> <label class=“form-label”>木皮2</label> <select class=“form-select” id=“mupi2Select” name=“mupi2”></select> </div> <div class=“mb-3”> <label class=“form-label”>厚度</label> <input type=“number” step=“0.01” class=“form-control” id=“houdu” name=“houdu”> </div> </form> </div> <div class=“modal-footer”> <button type=“button” class=“btn btn-secondary” data-bs-dismiss=“modal”>关闭</button> <button type=“button” class=“btn btn-primary” id=“saveBtn”>保存</button> </div> </div> </div> </div> <!-- 引入 Bootstrap JS --> <script src=“https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js”></script> <script type=“module” src=“…/js/bancai.js”></script> <!-- 改为模块方式导入 --> </body> </html> bancai.js:9 Uncaught SyntaxError: Unexpected token '{' (at bancai.js:9:12)
06-14
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