sse流式接口请求

sse流式接口请求一般可以使用插件：@microsoft/fetch-event-source

sendMessage(content, userChatId, voice = 1) {
      const obj = {
        text: "",
        showSuggestion: false,
        role: "ai",
      };
      const that = this;
      that.messageTextList.push(obj);
      const params = {
        query: content,
        session_id: that.session_id,
        user_chat_id: userChatId,
      };
      if (voice === 1) {
        params.seconds_use = parseInt((that.touchEndTime - that.touchStartTime) / 1000);
      }
      fetchEventSource(
        process.env.VUE_APP_API_URL + "/coach/chat/chat_stream",
        {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
          },
          body: JSON.stringify(params),
          onopen(e) {
            console.log("Connection open", e);
          },
          onmessage(ev) {
            console.log("Received message:", ev.data);
            // 这里可以根据接收到的流式数据更新前端界面
            const data = that.translataData(ev.data);
            if (data?.content) {
              if (data.content !== '[DONE]') {
                obj.text += data?.content;
              }
            } else if (data?.error) {
              obj.text = data?.error;
            }
            if (data?.suggestion) {
              that.messageTextList[that.messageTextList.length - 2].suggestion = data?.suggestion;
            }
            if (data?.evaluation) {
              that.messageTextList[that.messageTextList.length - 2].evaluation = data?.evaluation;
            }

            if (data?.session_end) {
              that.showReport = true;
            }

            that.$forceUpdate()
          },
          onclose() {
            console.log("Connection closed by server");
          },
          onerror(err) {
            console.error("Error received:", err);
          },
        }
      );
    }

但是如果遇到要传一段录音文件，使用上面的插件就无法处理了，可以使用下面的方法实现传流文件

// 假设有一个文件输入框
const fileInput = document.querySelector('input[type="file"]');

// 创建 FormData
const formData = new FormData();
formData.append('audio', fileInput.files[0]);

// 发送请求并处理流式响应
fetch('/transcribe', {
    method: 'POST',
    body: formData
})
.then(response => {
    const reader = response.body.getReader();
    const decoder = new TextDecoder();
    
    function processStream() {
        return reader.read().then(({done, value}) => {
            if (done) {
                console.log('流读取完成');
                return;
            }
            
            // 解码收到的数据
            const text = decoder.decode(value);
            // 分割成单独的 SSE 消息
            const messages = text.split('\n\n');
            
            for (const message of messages) {
                if (message.startsWith('data: ')) {
                    try {
                        const data = JSON.parse(message.slice(6));
                        
                        if (data.duration) {
                            console.log('音频时长：', data.duration);
                        }
                        else if (data.text) {
                            console.log('转写文本：', data.text);
                        }
                        else if (data.comments) {
                            console.log('评论：', data.comments);
                        }
                        else if (data.final) {
                            console.log('转写结束');
                            return;
                        }
                    } catch (e) {
                        console.error('解析消息失败：', e);
                    }
                }
            }
            
            return processStream();
        });
    }
    
    return processStream();
})
.catch(error => {
    console.error('请求错误：', error);
});