uniapp-websocket的封装
1.新建webSocket.js
class webSocketClass {
constructor(url, time) {
this.url = url
this.data = null
this.isCreate = false // WebSocket 是否创建成功
this.isConnect = false // 是否已经连接
this.isInitiative = false // 是否主动断开
this.timeoutNumber = time // 心跳检测间隔
this.heartbeatTimer = null // 心跳检测定时器
this.reconnectTimer = null // 断线重连定时器
this.socketExamples = null // websocket实例
this.againTime = 3 // 重连等待时间(单位秒)
}
// 初始化websocket连接
initSocket() {
const _this = this
this.socketExamples = uni.connectSocket({
url: _this.url,
header: {
'content-type': 'application/json'
},
success: (res) => {
_this.isCreate = true
console.log(res)
},
fail: (rej) => {
console.error(rej)
_this.isCreate = false
}
})
this.createSocket()
}
// 创建websocket连接
createSocket() {
if (this.isCreate) {
console.log('WebSocket 开始初始化')
// 监听 WebSocket 连接打开事件
try {
this.socketExamples.onOpen(() => {
console.log('WebSocket 连接成功')
this.isConnect = true
clearInterval(this.heartbeatTimer)
clearTimeout(this.reconnectTimer)
// 打开心跳检测
this.heartbeatCheck()
})
// 监听 WebSocket 接受到服务器的消息事件
this.socketExamples.onMessage((res) => {
console.log('收到消息')
uni.$emit('message', res)
})
// 监听 WebSocket 连接关闭事件
this.socketExamples.onClose(() => {
console.log('WebSocket 关闭了')
this.isConnect = false
this.reconnect()
})
// 监听 WebSocket 错误事件
this.socketExamples.onError((res) => {
console.log('WebSocket 出错了')
console.log(res)
this.isInitiative = false
})
} catch (error) {
console.warn(error)
}
} else {
console.warn('WebSocket 初始化失败!')
}
}
// 发送消息
sendMsg(value) {
const param = JSON.stringify(value)
return new Promise((resolve, reject) => {
this.socketExamples.send({
data: param,
success() {
console.log('消息发送成功')
resolve(true)
},
fail(error) {
console.log('消息发送失败')
reject(error)
}
})
})
}
// 开启心跳检测
heartbeatCheck() {
console.log('开启心跳')
this.data = { state: 1, method: 'heartbeat' }
this.heartbeatTimer = setInterval(() => {
this.sendMsg(this.data)
}, this.timeoutNumber * 1000)
}
// 重新连接
reconnect() {
// 停止发送心跳
clearTimeout(this.reconnectTimer)
clearInterval(this.heartbeatTimer)
// 如果不是人为关闭的话，进行重连
if (!this.isInitiative) {
this.reconnectTimer = setTimeout(() => {
this.initSocket()
}, this.againTime * 1000)
}
}
// 关闭 WebSocket 连接
closeSocket(reason = '关闭') {
const _this = this
this.socketExamples.close({
reason,
success() {
_this.data = null
_this.isCreate = false
_this.isConnect = false
_this.isInitiative = true
_this.socketExamples = null
clearInterval(_this.heartbeatTimer)
clearTimeout(_this.reconnectTimer)
console.log('关闭 WebSocket 成功')
},
fail() {
console.log('关闭 WebSocket 失败')
}
})
}
}
export default webSocketClass
2.在App.vue的globalData添加===》socketObj:null
3.引用 import WebSocketClass from '../../common/webSocket'
4.使用
onLoad(){uni.$on('message', this.getMessage)},
onUnload() {
uni.$off('message', this.getMessage)
},
methods:{getMessage(msg) {}
console.log(msg)
},
在需要使用的地方使用
if (getApp().globalData.socketObj) {
// 如果sockt实例未连接
if (!getApp().globalData.socketObj.isConnect) {
getApp().globalData.socketObj.initSocket()
}
} else {
// 如果没有sockt实例，则创建
getApp().globalData.socketObj = new WebSocketClass(
`wss:这里是地址`,
60
)
getApp().globalData.socketObj.initSocket()
}
