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