417 lines
13 KiB
JavaScript
417 lines
13 KiB
JavaScript
// 二维码生成器 JavaScript
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class QRCodeGenerator {
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constructor() {
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this.apiEndpoints = [];
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this.currentApiIndex = 0;
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this.init();
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}
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// 初始化
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async init() {
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await this.loadApiEndpoints();
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this.bindEvents();
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this.setupFormValidation();
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}
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// 加载API接口列表
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async loadApiEndpoints() {
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try {
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const response = await fetch('./接口集合.json');
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this.apiEndpoints = await response.json();
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console.log('已加载API接口:', this.apiEndpoints);
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} catch (error) {
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console.error('加载API接口失败:', error);
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this.showError('加载配置失败，请刷新页面重试');
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}
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}
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// 绑定事件
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bindEvents() {
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const form = document.getElementById('qrForm');
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const retryBtn = document.querySelector('.retry-btn');
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const downloadBtn = document.querySelector('.download-btn');
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const copyBtn = document.querySelector('.copy-btn');
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const newBtn = document.querySelector('.new-btn');
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form.addEventListener('submit', (e) => this.handleSubmit(e));
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retryBtn.addEventListener('click', () => this.retryGeneration());
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downloadBtn.addEventListener('click', () => this.downloadQRCode());
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copyBtn.addEventListener('click', () => this.copyImageLink());
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newBtn.addEventListener('click', () => this.resetForm());
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// 实时字符计数
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const textArea = document.getElementById('text');
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textArea.addEventListener('input', () => this.updateCharCount());
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}
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// 设置表单验证
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setupFormValidation() {
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const textArea = document.getElementById('text');
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const form = document.getElementById('qrForm');
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textArea.addEventListener('blur', () => {
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if (textArea.value.trim() === '') {
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this.showFieldError(textArea, '请输入要生成二维码的内容');
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} else {
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this.clearFieldError(textArea);
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}
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});
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}
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// 显示字段错误
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showFieldError(field, message) {
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this.clearFieldError(field);
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field.style.borderColor = '#d32f2f';
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const errorDiv = document.createElement('div');
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errorDiv.className = 'field-error';
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errorDiv.style.color = '#d32f2f';
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errorDiv.style.fontSize = '0.8rem';
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errorDiv.style.marginTop = '5px';
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errorDiv.textContent = message;
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field.parentNode.appendChild(errorDiv);
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}
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// 清除字段错误
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clearFieldError(field) {
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field.style.borderColor = '';
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const errorDiv = field.parentNode.querySelector('.field-error');
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if (errorDiv) {
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errorDiv.remove();
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}
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}
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// 更新字符计数
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updateCharCount() {
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const textArea = document.getElementById('text');
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const text = textArea.value;
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const length = text.length;
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// 移除旧的计数显示
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const oldCounter = textArea.parentNode.querySelector('.char-counter');
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if (oldCounter) oldCounter.remove();
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// 添加新的计数显示
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if (length > 0) {
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const counter = document.createElement('div');
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counter.className = 'char-counter';
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counter.style.fontSize = '0.8rem';
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counter.style.color = '#666';
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counter.style.textAlign = 'right';
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counter.style.marginTop = '5px';
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counter.textContent = `${length} 个字符`;
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textArea.parentNode.appendChild(counter);
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}
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}
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// 处理表单提交
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async handleSubmit(e) {
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e.preventDefault();
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const formData = new FormData(e.target);
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const params = {
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text: formData.get('text').trim(),
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size: formData.get('size'),
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level: formData.get('level'),
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encoding: formData.get('encoding')
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};
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// 验证输入
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if (!params.text) {
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this.showFieldError(document.getElementById('text'), '请输入要生成二维码的内容');
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return;
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}
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this.showLoading();
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await this.generateQRCode(params);
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}
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// 生成二维码
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async generateQRCode(params) {
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let success = false;
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let lastError = null;
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// 尝试所有API接口
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for (let i = 0; i < this.apiEndpoints.length; i++) {
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const apiIndex = (this.currentApiIndex + i) % this.apiEndpoints.length;
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const apiUrl = this.apiEndpoints[apiIndex];
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try {
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console.log(`尝试API ${apiIndex + 1}:`, apiUrl);
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const result = await this.callAPI(apiUrl, params);
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if (result.success) {
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this.currentApiIndex = apiIndex; // 记录成功的API
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this.showResult(result.data, params);
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success = true;
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break;
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}
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} catch (error) {
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console.warn(`API ${apiIndex + 1} 失败:`, error);
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lastError = error;
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}
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}
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if (!success) {
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this.showError(lastError?.message || '所有API接口都无法访问，请稍后重试');
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}
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}
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// 调用API
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async callAPI(baseUrl, params) {
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const url = new URL('/v2/qrcode', baseUrl);
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// 添加查询参数
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Object.entries(params).forEach(([key, value]) => {
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if (value) {
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url.searchParams.append(key, value);
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}
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});
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console.log('请求URL:', url.toString());
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const controller = new AbortController();
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const timeoutId = setTimeout(() => controller.abort(), 10000); // 10秒超时
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try {
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const response = await fetch(url.toString(), {
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method: 'GET',
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signal: controller.signal,
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headers: {
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'Accept': 'application/json, image/*'
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}
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});
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clearTimeout(timeoutId);
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if (!response.ok) {
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throw new Error(`HTTP ${response.status}: ${response.statusText}`);
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}
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// 根据返回格式处理
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if (params.encoding === 'image') {
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const blob = await response.blob();
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const imageUrl = URL.createObjectURL(blob);
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return {
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success: true,
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data: {
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imageUrl: imageUrl,
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text: params.text,
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size: params.size,
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level: params.level,
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format: 'image'
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}
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};
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} else {
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const jsonData = await response.json();
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if (jsonData.code === 0 && jsonData.data) {
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return {
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success: true,
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data: {
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imageUrl: jsonData.data.data_uri,
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text: params.text,
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size: params.size,
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level: params.level,
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format: 'json',
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base64: jsonData.data.base64,
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mimeType: jsonData.data.mime_type
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}
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};
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} else {
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throw new Error(jsonData.message || '生成失败');
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}
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}
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} catch (error) {
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clearTimeout(timeoutId);
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if (error.name === 'AbortError') {
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throw new Error('请求超时，请重试');
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}
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throw error;
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}
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}
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// 显示加载状态
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showLoading() {
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this.hideAllStates();
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document.getElementById('loading').classList.remove('hidden');
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const btn = document.querySelector('.generate-btn');
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btn.classList.add('loading');
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btn.disabled = true;
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}
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// 显示错误
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showError(message) {
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this.hideAllStates();
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const errorDiv = document.getElementById('error');
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const errorMessage = errorDiv.querySelector('.error-message');
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errorMessage.textContent = message;
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errorDiv.classList.remove('hidden');
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this.resetButton();
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}
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// 显示结果
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showResult(data, params) {
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this.hideAllStates();
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const resultDiv = document.getElementById('result');
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const qrImage = document.getElementById('qrImage');
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const resultText = document.querySelector('.result-text');
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qrImage.src = data.imageUrl;
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qrImage.alt = `二维码: ${data.text}`;
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resultText.innerHTML = `
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<strong>内容:</strong> ${this.escapeHtml(data.text)}<br>
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<strong>尺寸:</strong> ${data.size}x${data.size}<br>
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<strong>容错级别:</strong> ${data.level}<br>
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<strong>格式:</strong> ${data.format.toUpperCase()}
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`;
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resultDiv.classList.remove('hidden');
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this.resetButton();
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// 保存数据供下载使用
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this.currentQRData = data;
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}
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// 隐藏所有状态
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hideAllStates() {
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document.getElementById('loading').classList.add('hidden');
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document.getElementById('error').classList.add('hidden');
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document.getElementById('result').classList.add('hidden');
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}
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// 重置按钮状态
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resetButton() {
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const btn = document.querySelector('.generate-btn');
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btn.classList.remove('loading');
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btn.disabled = false;
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}
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// 重试生成
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async retryGeneration() {
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const form = document.getElementById('qrForm');
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const formData = new FormData(form);
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const params = {
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text: formData.get('text').trim(),
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size: formData.get('size'),
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level: formData.get('level'),
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encoding: formData.get('encoding')
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};
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this.showLoading();
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await this.generateQRCode(params);
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}
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// 下载二维码
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downloadQRCode() {
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if (!this.currentQRData) return;
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const link = document.createElement('a');
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link.href = this.currentQRData.imageUrl;
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link.download = `qrcode_${Date.now()}.png`;
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document.body.appendChild(link);
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link.click();
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document.body.removeChild(link);
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this.showToast('二维码已下载');
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}
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// 复制图片链接
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async copyImageLink() {
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if (!this.currentQRData) return;
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try {
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await navigator.clipboard.writeText(this.currentQRData.imageUrl);
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this.showToast('链接已复制到剪贴板');
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} catch (error) {
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console.error('复制失败:', error);
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this.showToast('复制失败，请手动复制');
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}
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}
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// 重置表单
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resetForm() {
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document.getElementById('qrForm').reset();
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this.hideAllStates();
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this.currentQRData = null;
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// 清除字符计数
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const counter = document.querySelector('.char-counter');
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if (counter) counter.remove();
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// 清除字段错误
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document.querySelectorAll('input, textarea, select').forEach(field => {
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this.clearFieldError(field);
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});
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// 聚焦到文本框
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document.getElementById('text').focus();
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}
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// 显示提示消息
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showToast(message) {
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// 移除旧的toast
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const oldToast = document.querySelector('.toast');
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if (oldToast) oldToast.remove();
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const toast = document.createElement('div');
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toast.className = 'toast';
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toast.style.cssText = `
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position: fixed;
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top: 20px;
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right: 20px;
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background: #4caf50;
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color: white;
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padding: 12px 20px;
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border-radius: 8px;
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box-shadow: 0 4px 12px rgba(0,0,0,0.2);
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z-index: 1000;
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animation: slideIn 0.3s ease;
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`;
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toast.textContent = message;
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document.body.appendChild(toast);
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setTimeout(() => {
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toast.style.animation = 'slideOut 0.3s ease';
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setTimeout(() => toast.remove(), 300);
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}, 3000);
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}
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// HTML转义
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escapeHtml(text) {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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}
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// 添加CSS动画
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const style = document.createElement('style');
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style.textContent = `
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@keyframes slideIn {
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from { transform: translateX(100%); opacity: 0; }
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to { transform: translateX(0); opacity: 1; }
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}
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@keyframes slideOut {
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from { transform: translateX(0); opacity: 1; }
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to { transform: translateX(100%); opacity: 0; }
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}
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`;
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document.head.appendChild(style);
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// 页面加载完成后初始化
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document.addEventListener('DOMContentLoaded', () => {
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new QRCodeGenerator();
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});
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// 错误处理
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window.addEventListener('error', (e) => {
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console.error('全局错误:', e.error);
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});
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window.addEventListener('unhandledrejection', (e) => {
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console.error('未处理的Promise拒绝:', e.reason);
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}); |