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244 lines
7.5 KiB
244 lines
7.5 KiB
/**
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* TCP连接工具类
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* 用于处理TCP连接、发送消息和断开连接
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*/
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// 引用TCP插件
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const TCPSocket = uni.requireNativePlugin('Aimer-TCPPlugin');
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// TCP连接配置
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const TCP_CONFIG = {
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ip: '192.168.1.9',
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port: '8080',
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channel: '1', // 可选 1~20
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charsetname: 'UTF-8' // 默认UTF-8,可选GBK
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};
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/**
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* TCP连接管理类
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*/
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class TCPConnection {
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constructor() {
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this.isConnected = false;
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this.connectionCallbacks = [];
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this.messageCallbacks = [];
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}
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/**
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* TCP初始化连接
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* @param {Object} config - 连接配置 {ip, port, channel, charsetname}
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* @param {Function} callback - 连接状态回调函数
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*/
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connect(config = {}, callback = null) {
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// 如果已经连接,先断开现有连接
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if (this.isConnected) {
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console.log('检测到现有TCP连接,先断开...');
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this.disconnect(config);
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// 等待断开完成后再连接
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setTimeout(() => {
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this._performConnect(config, callback);
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}, 300);
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} else {
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// 直接连接
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this._performConnect(config, callback);
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}
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}
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/**
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* 执行TCP连接
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* @param {Object} config - 连接配置
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* @param {Function} callback - 连接状态回调函数
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*/
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_performConnect(config = {}, callback = null) {
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const connectionConfig = {
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channel: config.channel || TCP_CONFIG.channel,
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ip: config.ip || TCP_CONFIG.ip,
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port: config.port || TCP_CONFIG.port
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};
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// 如果指定了字符集,添加到配置中
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if (config.charsetname || TCP_CONFIG.charsetname) {
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connectionConfig.charsetname = config.charsetname || TCP_CONFIG.charsetname;
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}
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console.log('开始建立TCP连接:', connectionConfig);
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TCPSocket.connect(
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connectionConfig,
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result => {
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/**
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* status : 0 连接成功
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* status : 1 断开连接
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* receivedMsg : 服务器返回字符串(普通的字符串交互)
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* receivedHexMsg : 服务器返回字节数组(单片机、智能家居等硬件数据交互)
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*/
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if (result.status == '0') {
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// TCP连接成功
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this.isConnected = true;
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console.log('TCP连接成功');
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this._notifyConnectionCallbacks('connected', result);
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} else if (result.status == '1') {
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// TCP断开连接
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this.isConnected = false;
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console.log('TCP断开连接');
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this._notifyConnectionCallbacks('disconnected', result);
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}
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if (result.receivedMsg) {
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// 服务器返回字符串
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console.log('收到字符串消息:', result.receivedMsg);
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this._notifyMessageCallbacks('string', result.receivedMsg);
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}
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// if (result.receivedHexMsg) {
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// // 硬件服务器返回16进制数据
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// console.log('收到16进制消息:', result.receivedHexMsg);
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// let msg = result.receivedHexMsg;
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// let sum = msg.length / 2;
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// let arr = [];
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// for (let k = 0; k < sum; k++) {
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// let i = msg.substring(k * 2, k * 2 + 2);
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// arr.push(i);
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// }
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// console.log('解析后的16进制数组:', arr);
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// this._notifyMessageCallbacks('hex', result.receivedHexMsg, arr);
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// }
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// 执行回调函数
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if (callback && typeof callback === 'function') {
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callback(result);
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}
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}
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);
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}
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/**
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* TCP发送消息(普通的字符串交互)
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* @param {String|Object} message - 要发送的消息,如果是对象会自动转换为JSON字符串
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* @param {Object} config - 发送配置 {channel, charsetname}
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*/
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send(message, config = {}) {
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if (!this.isConnected) {
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console.warn('TCP未连接,无法发送消息');
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return false;
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}
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// 如果message是对象,转换为JSON字符串
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let messageStr = message;
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if (typeof message === 'object') {
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messageStr = JSON.stringify(message) + '\n';
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}
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const sendConfig = {
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channel: config.channel || '1', // 注意:channel应该是字符串
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message: messageStr
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};
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// 如果指定了字符编码,添加到配置中
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if (config.charsetname) {
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sendConfig.charsetname = config.charsetname;
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}
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TCPSocket.send(sendConfig);
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console.log('js成功发送TCP消息:', messageStr);
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return true;
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}
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/**
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* TCP断开连接
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* @param {Object} config - 断开配置 {channel}
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*/
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disconnect(config = {}) {
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const disconnectConfig = {
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channel: config.channel || TCP_CONFIG.channel
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};
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TCPSocket.disconnect(disconnectConfig);
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this.isConnected = false;
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console.log('TCP连接已断开', disconnectConfig);
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}
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/**
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* 添加连接状态监听器
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* @param {Function} callback - 回调函数 (status, result) => {}
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*/
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onConnectionChange(callback) {
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if (typeof callback === 'function') {
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this.connectionCallbacks.push(callback);
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}
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}
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/**
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* 添加消息监听器
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* @param {Function} callback - 回调函数 (type, message, parsedArray) => {}
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*/
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onMessage(callback) {
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if (typeof callback === 'function') {
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this.messageCallbacks.push(callback);
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}
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}
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/**
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* 移除连接状态监听器
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* @param {Function} callback - 要移除的回调函数
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*/
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removeConnectionListener(callback) {
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const index = this.connectionCallbacks.indexOf(callback);
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if (index > -1) {
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this.connectionCallbacks.splice(index, 1);
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}
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}
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/**
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* 移除消息监听器
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* @param {Function} callback - 要移除的回调函数
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*/
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removeMessageListener(callback) {
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const index = this.messageCallbacks.indexOf(callback);
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if (index > -1) {
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this.messageCallbacks.splice(index, 1);
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}
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}
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/**
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* 获取连接状态
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* @returns {Boolean} 连接状态
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*/
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getConnectionStatus() {
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return this.isConnected;
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}
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/**
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* 通知连接状态回调
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* @private
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*/
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_notifyConnectionCallbacks(status, result) {
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this.connectionCallbacks.forEach(callback => {
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try {
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callback(status, result);
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} catch (error) {
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console.error('连接状态回调执行错误:', error);
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}
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});
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}
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/**
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* 通知消息回调
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* @private
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*/
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_notifyMessageCallbacks(type, message, parsedArray = null) {
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this.messageCallbacks.forEach(callback => {
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try {
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callback(type, message, parsedArray);
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} catch (error) {
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console.error('消息回调执行错误:', error);
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}
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});
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}
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}
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// 创建TCP连接实例
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const tcpConnection = new TCPConnection();
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// 导出TCP连接实例和类
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export default tcpConnection;
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export { TCPConnection, TCP_CONFIG };
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