生产看板视频修改

This commit is contained in:
2025-04-25 10:59:36 +08:00
parent 446fa9a0d1
commit f24b769305
2 changed files with 70 additions and 31 deletions

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@@ -37,14 +37,17 @@ export default {
return { return {
isFullScreen: false, isFullScreen: false,
scaleNum: 0.8, scaleNum: 0.8,
dataObj:{} dataObj:{},
sseReader: null, // 保存流读取器
abortController: null, // 用于中止 fetch 请求
retryCount: 0, // 当前重试次数
isDestroyed: false // 标记组件是否已销毁
}; };
}, },
created() { created() {
this.init() this.init()
}, },
mounted() { mounted() {
console.log('dataBoard mounted')
this.boxReset = debounce(() => { this.boxReset = debounce(() => {
this.resetSize() this.resetSize()
}, 300) }, 300)
@@ -54,9 +57,9 @@ export default {
}) })
this.getData() this.getData()
}, },
destroyed() { beforeDestroy() {
console.log('dataBoard destroyed') this.closeSSE();
}, },
computed: { computed: {
sidebarOpened() { sidebarOpened() {
return this.$store.state.app.sidebar.opened return this.$store.state.app.sidebar.opened
@@ -68,40 +71,76 @@ export default {
} }
}, },
methods: { methods: {
getData() { async getData() {
let _this = this; let _this = this;
if (_this.isDestroyed) return;
const url = process.env.VUE_APP_BASE_API+'/admin-api/monitoring/message/subscribe/'+store.getters.userId+'-'+Date.now(); const url = process.env.VUE_APP_BASE_API+'/admin-api/monitoring/message/subscribe/'+store.getters.userId+'-'+Date.now();
const token = getAccessToken() const token = getAccessToken()
const headers = new Headers({ const headers = new Headers({
'Authorization': `Bearer ${token}`, 'Authorization': `Bearer ${token}`,
'Content-Type': 'text/event-stream' 'Content-Type': 'text/event-stream'
}); });
fetch(url, { headers }) try {
.then(response => { // 创建中止控制器
const reader = response.body.getReader(); this.abortController = new AbortController();
const decoder = new TextDecoder(); // 发起 fetch 请求(替换为你的接口地址)
const readStream = () => { const response = await fetch(url, {
reader.read().then(({ done, value }) => { method: 'GET',
if (done) { headers: headers,
console.log('SSE 连接关闭'); signal: _this.abortController.signal // 绑定中止信号
return; });
}
const data = decoder.decode(value); // 获取流读取器
console.log('收到消息:', data); _this.sseReader = response.body.getReader();
if (_this.isValidData(data)){ const decoder = new TextDecoder();
_this.upDateMsg(data);
} // 持续读取流数据
readStream(); // 继续读取 while (true) {
}).catch(error => { const { done, value } = await _this.sseReader.read();
console.error('SSE 读取错误:', error); if (done) {
}); console.log('SSE 连接正常关闭');
}; _this.handleReconnect(); // 触发重连
readStream(); break;
}) }
.catch(error => { // 处理 SSE 事件数据
console.error('SSE 连接失败:', error); const data = decoder.decode(value);
}); console.log('收到消息:', data);
if (_this.isValidData(data)){
_this.upDateMsg(data);
}
}
} catch (error) {
// 主动中止的请求不报错
if (error.name === 'AbortError') return;
console.error('SSE 连接异常:', error);
_this.handleReconnect(); // 触发重连
}
}, },
closeSSE() {
this.isDestroyed = true; // 标记销毁
if (this.abortController) {
this.abortController.abort(); // 中止 fetch 请求
}
if (this.sseReader) {
this.sseReader.cancel(); // 关闭流读取器
this.sseReader = null;
}
console.log('SSE 连接已强制关闭');
},
handleReconnect() {
if (this.isDestroyed) return;
// 指数退避策略(最大重试 5 次)
const maxRetries = 5;
if (this.retryCount < maxRetries) {
const delay = Math.pow(2, this.retryCount) * 1000;
setTimeout(() => {
this.retryCount++;
this.initSSE();
}, delay);
} else {
console.error('SSE 重连次数已达上限');
}
},
isValidData (data) { isValidData (data) {
return data.trim().startsWith('data:{') && !data.includes('heartbeat'); return data.trim().startsWith('data:{') && !data.includes('heartbeat');
}, },