修复对话断断续续的问题，锁定在 fastapi 上

web/src/components/ChatComponent.vue

@@ -434,17 +434,25 @@ const fetchChatResponse = (user_input, cur_res_id) => {
               groupRefs(cur_res_id);
             })
           } else {
-            groupRefs(cur_res_id);
+            updateMessage({
+              id: cur_res_id,
+              status: "finished",
+            });
           }
           isStreaming.value = false;
           if (conv.value.messages.length === 2) { renameTitle(); }
           return;
         }
 
-        const chunk = decoder.decode(value, { stream: true });
+        buffer += decoder.decode(value, { stream: true });
-        buffer += chunk;
+        const lines = buffer.split('\n');
+
+        // 处理除最后一行外的所有完整行
+        for (let i = 0; i < lines.length - 1; i++) {
+          const line = lines[i].trim();
+          if (line) {
             try {
-          const data = JSON.parse(chunk);
+              const data = JSON.parse(line);
               updateMessage({
                 id: cur_res_id,
                 text: data.response,
@@ -452,13 +460,21 @@ const fetchChatResponse = (user_input, cur_res_id) => {
                 status: data.status,
                 meta: data.meta,
               });
-          console.debug(data.response)
+              // console.log("Last message", conv.value.messages[conv.value.messages.length - 1].text)
+              // console.log("Last message", conv.value.messages[conv.value.messages.length - 1].status)
+
               if (data.history) {
                 conv.value.history = data.history;
               }
             } catch (e) {
-          // console.debug('JSON 解析错误:', e, chunk);
+              console.error('JSON 解析错误:', e, line);
             }
+          }
+        }
+
+        // 保留最后一个可能不完整的行
+        buffer = lines[lines.length - 1];
+
         return readChunk(); // 继续读取
       });
     };
@@ -471,7 +487,7 @@ const fetchChatResponse = (user_input, cur_res_id) => {
       status: "error",
     });
     isStreaming.value = false;
-  })
+  });
 }
 
 const fetchRefs = (cur_res_id) => {
@@ -975,3 +991,4 @@ watch(
   }
 }
 </style>
+