我不到啊

CS3.1.py

@@ -147,7 +147,7 @@ def chat():
 def broadcast_message(message, sender=None):
     for conn in chat_connections:
         try:
-            conn.sendall(json.dumps(message).encode())
+            conn.sendall(json.dumps(message).encode('utf-8'))
         except:
             # 连接异常时移除
             for uname, info in list(active_connections.items()):
@@ -163,7 +163,7 @@ def handle_socket_message(data, addr, conn):
         if action == 'register':
             avatar = data.get('avatar', 'default_avatar.png')
             result = register_user(data.get('username'), data.get('password'), avatar)
-            conn.sendall(json.dumps(result).encode())
+            conn.sendall(json.dumps(result).encode('utf-8'))
             return result
 
         elif action == 'login':
@@ -177,7 +177,7 @@ def handle_socket_message(data, addr, conn):
                     "status": "error",
                     "message": "Account already logged in"
                 }
-                conn.sendall(json.dumps(response).encode())
+                conn.sendall(json.dumps(response).encode('utf-8'))
                 return response
 
             if isuserxist(username) and ispsswdright(username, password):
@@ -203,7 +203,7 @@ def handle_socket_message(data, addr, conn):
                     "username": username,
                     "avatar": avatar  # 返回头像
                 }
-                conn.sendall(json.dumps(response).encode())
+                conn.sendall(json.dumps(response).encode('utf-8'))
                 return response
             else:
                 response = {
@@ -211,18 +211,28 @@ def handle_socket_message(data, addr, conn):
                     "status": "error",
                     "message": "Invalid credentials"
                 }
-                conn.sendall(json.dumps(response).encode())
+                conn.sendall(json.dumps(response).encode('utf-8'))
                 return response
 
         elif action == 'chat':
-            username = validate_token(data.get('token', ''))
+            token = data.get('token')
+            if not token:
+                response = {
+                    "type": "chat",
+                    "status": "error",
+                    "message": "Missing token"
+                }
+                conn.sendall(json.dumps(response).encode('utf-8'))
+                return response
+
+            username = validate_token(token)
             if not username:
                 response = {
                     "type": "chat",
                     "status": "error",
-                    "message": "Not authenticated"
+                    "message": "Invalid token"
                 }
-                conn.sendall(json.dumps(response).encode())
+                conn.sendall(json.dumps(response).encode('utf-8'))
                 return response
 
             if username not in active_connections:
@@ -231,7 +241,7 @@ def handle_socket_message(data, addr, conn):
                     "status": "error",
                     "message": "Not logged in"
                 }
-                conn.sendall(json.dumps(response).encode())
+                conn.sendall(json.dumps(response).encode('utf-8'))
                 return response
 
             message = {
@@ -241,10 +251,18 @@ def handle_socket_message(data, addr, conn):
                 "avatar": get_avatar(username)  # 添加头像
             }
             broadcast_message(message)
-            return {"type": "chat", "status": "success"}
+            # 返回成功响应
+            response = {"type": "chat", "status": "success"}
+            conn.sendall(json.dumps(response).encode('utf-8'))
+            return response
 
     except Exception as e:
-        return {"status": "error", "message": str(e)}
+        response = {
+            "status": "error",
+            "message": str(e)
+        }
+        conn.sendall(json.dumps(response).encode('utf-8'))
+        return response
 
 def run_socket_server():
     socket_server.bind(("localhost", 8889))
@@ -260,7 +278,9 @@ def run_socket_server():
                     break
 
                 try:
-                    json_data = json.loads(data.decode())
+                    # 尝试解码为UTF-8，忽略错误字符
+                    decoded_data = data.decode('utf-8', errors='ignore')
+                    json_data = json.loads(decoded_data)
                     response = handle_socket_message(json_data, addr, conn)
                 except json.JSONDecodeError:
                     response = {
@@ -268,7 +288,14 @@ def run_socket_server():
                         "status": "error",
                         "message": "Invalid JSON"
                     }
-                    conn.sendall(json.dumps(response).encode())
+                    conn.sendall(json.dumps(response).encode('utf-8'))
+                except Exception as e:
+                    response = {
+                        "type": "error",
+                        "status": "error",
+                        "message": str(e)
+                    }
+                    conn.sendall(json.dumps(response).encode('utf-8'))
         except (ConnectionResetError, BrokenPipeError):
             print(f"Client {addr} disconnected abruptly")
         finally:
@@ -294,6 +321,6 @@ if __name__ == '__main__':
         conn.execute('''CREATE TABLE IF NOT EXISTS users
                       (name TEXT PRIMARY KEY, 
                        passwd TEXT,
-                       avatar TEXT)''')
+                       avatar TEXT DEFAULT 'default_avatar.png')''')
     threading.Thread(target=run_socket_server, daemon=True).start()
     app.run(port=5001)