100 lines
3.1 KiB
JavaScript
100 lines
3.1 KiB
JavaScript
import { BASE_URL } from "../../constant/base";
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/// 请求流式数据的API
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const API = '/agent/assistant/chat';
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/**
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* 获取AI聊天流式信息（仅微信小程序支持）
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* @param {Object} params 请求参数
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* @param {Function} onChunk 回调，每收到一段数据触发
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* @returns {Promise}
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*/
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function agentChatStream(params, onChunk) {
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return new Promise((resolve, reject) => {
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const token = uni.getStorageSync('token');
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let hasError = false;
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console.log("发送请求内容: ", params)
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// #ifdef MP-WEIXIN
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const requestTask = uni.request({
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url: BASE_URL + API, // 替换为你的接口地址
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method: 'POST',
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data: params,
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enableChunked: true,
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header: {
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Accept: 'text/event-stream',
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'Content-Type': 'application/json',
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Authorization: `Bearer ${token}`, // 如需token可加
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},
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responseType: 'arraybuffer',
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success(res) {
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resolve(res.data);
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},
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fail(err) {
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console.log("====> ", JSON.stringify(err))
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reject(err);
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},
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complete(res) {
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if(res.statusCode !== 200) {
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console.log("====> ", JSON.stringify(res))
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if (onChunk) {
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onChunk({ error: true, message: '服务器错误', detail: res });
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}
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reject(res);
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}
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}
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});
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requestTask.onHeadersReceived(res => {
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console.log('onHeadersReceived', res);
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const status = res.statusCode || (res.header && res.header.statusCode);
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if (status && status !== 200) {
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hasError = true;
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if (onChunk) {
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onChunk({ error: true, message: `服务器错误(${status})`, detail: res });
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}
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requestTask.abort && requestTask.abort();
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}
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});
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requestTask.onChunkReceived(res => {
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if (hasError) return;
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const base64 = uni.arrayBufferToBase64(res.data);
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let data = '';
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try {
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data = decodeURIComponent(escape(atob(base64)));
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} catch (e) {
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// 某些平台可能不支持 atob，可以直接用 base64
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data = base64;
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}
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const messages = parseSSEChunk(data);
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messages.forEach(msg => {
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if (onChunk) onChunk(msg);
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});
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});
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// #endif
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});
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}
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// 解析SSE分段数据
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function parseSSEChunk(raw) {
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// 拆分为多段
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const lines = raw.split('\n\n');
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const results = [];
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lines.forEach(line => {
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// 只处理包含 data: 的行
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const dataMatch = line.match(/data:(\{.*\})/);
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if (dataMatch && dataMatch[1]) {
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try {
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const obj = JSON.parse(dataMatch[1]);
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results.push(obj);
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} catch (e) {
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// 解析失败忽略
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}
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}
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});
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return results;
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}
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export { agentChatStream }
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