diff --git a/.gitignore b/.gitignore
index 42df938..185e280 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,11 @@ __pycache__/
 *.py[cod]
 *$py.class
 
+# 确保所有层级的__pycache__目录都被忽略
+**/__pycache__/
+*/__pycache__/
+*/**/__pycache__/
+
 # IDE相关
 .idea/
 .vscode/
diff --git a/camera/__pycache__/CamOperation_class.cpython-310.pyc b/camera/__pycache__/CamOperation_class.cpython-310.pyc
deleted file mode 100644
index 8323c12..0000000
Binary files a/camera/__pycache__/CamOperation_class.cpython-310.pyc and /dev/null differ
diff --git a/camera/__pycache__/CameraParams_const.cpython-310.pyc b/camera/__pycache__/CameraParams_const.cpython-310.pyc
deleted file mode 100644
index 4f01d68..0000000
Binary files a/camera/__pycache__/CameraParams_const.cpython-310.pyc and /dev/null differ
diff --git a/camera/__pycache__/CameraParams_header.cpython-310.pyc b/camera/__pycache__/CameraParams_header.cpython-310.pyc
deleted file mode 100644
index ff7ea12..0000000
Binary files a/camera/__pycache__/CameraParams_header.cpython-310.pyc and /dev/null differ
diff --git a/camera/__pycache__/MvCameraControl_class.cpython-310.pyc b/camera/__pycache__/MvCameraControl_class.cpython-310.pyc
deleted file mode 100644
index c5fcd32..0000000
Binary files a/camera/__pycache__/MvCameraControl_class.cpython-310.pyc and /dev/null differ
diff --git a/camera/__pycache__/MvErrorDefine_const.cpython-310.pyc b/camera/__pycache__/MvErrorDefine_const.cpython-310.pyc
deleted file mode 100644
index c2cda85..0000000
Binary files a/camera/__pycache__/MvErrorDefine_const.cpython-310.pyc and /dev/null differ
diff --git a/camera/__pycache__/PixelType_header.cpython-310.pyc b/camera/__pycache__/PixelType_header.cpython-310.pyc
deleted file mode 100644
index 76af58f..0000000
Binary files a/camera/__pycache__/PixelType_header.cpython-310.pyc and /dev/null differ
diff --git a/config/app_config.json b/config/app_config.json
index e96b4c6..33a27f1 100644
--- a/config/app_config.json
+++ b/config/app_config.json
@@ -4,18 +4,34 @@
         "version": "1.0.0",
         "features": {
             "enable_serial_ports": false,
-            "enable_keyboard_listener": true,
+            "enable_keyboard_listener": false,
             "enable_camera": false
         }
     },
     "database": {
-        "type": "sqlite",
-        "path": "db/jtDB.db",
-        "host": "",
-        "port": "",
-        "user": "",
-        "password": "",
-        "name": ""
+        "default": "sqlite",
+        "sources": {
+            "sqlite": {
+                "path": "db/jtDB.db",
+                "description": "默认SQLite数据库"
+            },
+            "postgresql": {
+                "host": "localhost",
+                "port": "5432",
+                "user": "postgres",
+                "password": "",
+                "name": "jtDB",
+                "description": "PostgreSQL数据库"
+            },
+            "mysql": {
+                "host": "localhost",
+                "port": "3306",
+                "user": "root",
+                "password": "",
+                "name": "jtDB",
+                "description": "MySQL数据库"
+            }
+        }
     },
     "camera": {
         "enabled": false,
diff --git a/dao/inspection_dao.py b/dao/inspection_dao.py
index 274531f..cf01c0c 100644
--- a/dao/inspection_dao.py
+++ b/dao/inspection_dao.py
@@ -403,6 +403,7 @@ class InspectionDAO:
                     tray_id,
                     COALESCE(axis_package_id, '') as axis_package_id,
                     COALESCE(weight, 0) as weight,
+                    COALESCE(net_weight, 0) as net_weight,
                     STRFTIME('%Y-%m-%d %H:%M:%S', pack_time) as pack_time
                 FROM inspection_pack_data
                 WHERE tray_id = ?
@@ -416,7 +417,7 @@ class InspectionDAO:
         except Exception as e:
             logging.error(f"获取包装记录失败: {str(e)}")
             return []
-    def save_package_record(self, order_id, tray_id, label_value, weight_value, finish_time):
+    def save_package_record(self, order_id, tray_id, label_value, weight_value,net_weight_value, finish_time):
         """保存包装记录
         
         Args:
@@ -429,10 +430,10 @@ class InspectionDAO:
         # TODO：调用接口，获取到工程号对应的其他信息，比如材质，规格，后续完成
         try:
             sql = """
-            INSERT INTO inspection_pack_data (order_id, tray_id, axis_package_id, weight, pack_time, create_time, create_by, update_time, update_by, is_deleted)
-            VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+            INSERT INTO inspection_pack_data (order_id, tray_id, axis_package_id, weight, net_weight, pack_time, create_time, create_by, update_time, update_by, is_deleted)
+            VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
             """
-            params = (order_id, tray_id, label_value, weight_value, finish_time, datetime.now(), 'system', datetime.now(), 'system', False)
+            params = (order_id, tray_id, label_value, weight_value, net_weight_value, finish_time, datetime.now(), 'system', datetime.now(), 'system', False)
             self.db.cursor.execute(sql, params)
             self.db.conn.commit()
         except Exception as e:
diff --git a/db/jtDB.db b/db/jtDB.db
index 6a85577..8b0a9fb 100644
Binary files a/db/jtDB.db and b/db/jtDB.db differ
diff --git a/from pymodbus.py b/from pymodbus.py
index 35d88c5..a13ebc9 100644
--- a/from pymodbus.py	
+++ b/from pymodbus.py	
@@ -2,12 +2,12 @@ from pymodbus.client import ModbusTcpClient
 
 client = ModbusTcpClient('localhost', port=5020)
 client.connect()
-client.write_registers(address=11, values=[112])
+# client.write_registers(address=11, values=[110])
 # client.write_registers(address=6, values=[1])
 # client.write_registers(address=5, values=[16])
-# client.write_registers(address=13, values=[1])
+client.write_registers(address=13, values=[1])
 
 
-result = client.read_holding_registers(address=4, count=1)
+result = client.read_holding_registers(address=13, count=1)
 print(result.registers[0],"123===")
 client.close()
\ No newline at end of file
diff --git a/main.py b/main.py
index 59eca21..7d3ee9f 100644
--- a/main.py
+++ b/main.py
@@ -179,8 +179,13 @@ def main():
         # 创建db目录（如果不存在）
         os.makedirs('db', exist_ok=True)
         
+        # 从配置获取SQLite数据库路径
+        config_loader = ConfigLoader.get_instance()
+        sqlite_config = config_loader.get_database_config('sqlite')
+        sqlite_db_path = sqlite_config.get('path', 'db/jtDB.db')
+
         # 检查数据库是否存在，如果不存在则初始化
-        if not os.path.exists('db/jtDB.db'):
+        if not os.path.exists(sqlite_db_path):
             from utils.init_db import init_database
             init_database()
             logging.info("初始化数据库完成")
@@ -190,6 +195,11 @@ def main():
         
         exit_code = app.exec()
         logging.info(f"应用程序退出，退出码: {exit_code}")
+        
+        # 关闭所有数据库连接
+        from utils.sql_utils import SQLUtils
+        SQLUtils.close_all_connections()
+        
         sys.exit(exit_code)
         
     except Exception as e:
diff --git a/ui/__pycache__/login_ui.cpython-310.pyc b/ui/__pycache__/login_ui.cpython-310.pyc
deleted file mode 100644
index e9585f7..0000000
Binary files a/ui/__pycache__/login_ui.cpython-310.pyc and /dev/null differ
diff --git a/ui/main_window_ui.py b/ui/main_window_ui.py
index 66cf74b..db87a8e 100644
--- a/ui/main_window_ui.py
+++ b/ui/main_window_ui.py
@@ -285,13 +285,13 @@ class MainWindowUI(QMainWindow):
             }
         """
         
-        # self.input_button = QPushButton("上料")
-        # self.input_button.setFont(self.normal_font)
-        # self.input_button.setStyleSheet(button_style + "background-color: #e3f2fd; border: 1px solid #2196f3;")
+        self.input_button = QPushButton("上料")
+        self.input_button.setFont(self.normal_font)
+        self.input_button.setStyleSheet(button_style + "background-color: #e3f2fd; border: 1px solid #2196f3;")
         
-        # self.output_button = QPushButton("下料")
-        # self.output_button.setFont(self.normal_font)
-        # self.output_button.setStyleSheet(button_style + "background-color: #fff8e1; border: 1px solid #ffc107;")
+        self.output_button = QPushButton("下料")
+        self.output_button.setFont(self.normal_font)
+        self.output_button.setStyleSheet(button_style + "background-color: #fff8e1; border: 1px solid #ffc107;")
         
         self.start_button = QPushButton("开始")
         self.start_button.setFont(self.normal_font)
@@ -302,10 +302,10 @@ class MainWindowUI(QMainWindow):
         self.stop_button.setStyleSheet(button_style + "background-color: #ffebee; border: 1px solid #f44336;")
         
         # 使用网格布局排列按钮
-        # self.button_layout.addWidget(self.input_button, 0, 0)
-        # self.button_layout.addWidget(self.output_button, 0, 1)
-        self.button_layout.addWidget(self.start_button, 0, 1)
-        self.button_layout.addWidget(self.stop_button, 0, 2)
+        self.button_layout.addWidget(self.input_button, 0, 0)
+        self.button_layout.addWidget(self.output_button, 0, 1)
+        self.button_layout.addWidget(self.start_button, 0, 2)
+        self.button_layout.addWidget(self.stop_button, 0, 3)
         
         self.control_layout.addWidget(self.button_container)
         
@@ -501,13 +501,13 @@ class MainWindowUI(QMainWindow):
         self.record_layout.addWidget(self.record_title)
         
         # 创建表格
-        self.record_table = QTableWidget(14, 8)  # 14行7列：序号、订单、品名、规格、托号、轴包装号、重量
+        self.record_table = QTableWidget(14, 9)  # 14行9列：序号、订单、品名、规格、托号、轴包装号、重量、净重、完成时间
         
         # 应用通用表格设置
         self.setup_table_common(self.record_table)
         
         # 设置列标题
-        record_headers = ["序号", "订单", "品名", "规格", "托号", "轴包装号", "重量", "完成时间"]
+        record_headers = ["序号", "订单", "品名", "规格", "托号", "轴包装号", "毛重", "净重", "完成时间"]
         for col, header in enumerate(record_headers):
             self.record_table.setItem(0, col, self.create_header_item(header))
         
@@ -520,7 +520,7 @@ class MainWindowUI(QMainWindow):
             self.record_table.setRowHeight(row, 35)
         
         # 设置列宽
-        column_widths = [70, 220, 160, 160, 160, 160, 160, 190]  # 各列的默认宽度
+        column_widths = [70, 200, 130, 130, 160, 120, 120, 120, 160]  # 各列的默认宽度
         for col, width in enumerate(column_widths):
             self.record_table.setColumnWidth(col, width)
         
@@ -593,7 +593,7 @@ class MainWindowUI(QMainWindow):
             self.inspection_headers = self.inspection_headers[:columns]
         
         # 计算总列数
-        total_columns = 2 + self.inspection_columns + 2  # 上料2列 + 检验N列 + 包装2列
+        total_columns = 2 + self.inspection_columns + 3  # 上料2列 + 检验N列 + 包装3列
         self.process_table.setColumnCount(total_columns)
         
         # 重新设置列宽
@@ -614,9 +614,9 @@ class MainWindowUI(QMainWindow):
         self.process_table.setSpan(0, 2, 1, self.inspection_columns)
         self.process_table.setItem(0, 2, self.create_header_item("检验"))
         
-        # 包装区域（2列）
+        # 包装区域（3列）
         packaging_start_col = 2 + self.inspection_columns
-        self.process_table.setSpan(0, packaging_start_col, 1, 2)
+        self.process_table.setSpan(0, packaging_start_col, 1, 3)
         self.process_table.setItem(0, packaging_start_col, self.create_header_item("包装"))
         
         # 第二行：列标题
@@ -636,7 +636,7 @@ class MainWindowUI(QMainWindow):
             self.process_table.setItem(1, 2 + i, self.create_header_item(header_text))
         
         # 包装区域列标题
-        packaging_headers = ["贴标", "称重"]
+        packaging_headers = ["贴标", "毛重", "净重"]
         for i, header in enumerate(packaging_headers):
             self.process_table.setItem(1, packaging_start_col + i, self.create_header_item(header))
     
@@ -653,4 +653,5 @@ class MainWindowUI(QMainWindow):
         # 包装区域列宽
         packaging_start_col = 2 + self.inspection_columns
         self.process_table.setColumnWidth(packaging_start_col, 140)     # 贴标
-        self.process_table.setColumnWidth(packaging_start_col + 1, 140) # 称重
\ No newline at end of file
+        self.process_table.setColumnWidth(packaging_start_col + 1, 140) # 毛重
+        self.process_table.setColumnWidth(packaging_start_col + 2, 140) # 净重
\ No newline at end of file
diff --git a/ui/settings_ui.py b/ui/settings_ui.py
index 5ad530a..622fe21 100644
--- a/ui/settings_ui.py
+++ b/ui/settings_ui.py
@@ -205,25 +205,31 @@ class SettingsUI(QWidget):
         self.database_layout = QVBoxLayout(self.database_tab)
         self.database_layout.setContentsMargins(20, 20, 20, 20)
         
-        # 数据库类型选择
-        self.db_type_group = QGroupBox("数据库类型")
+        # 数据源类型选择
+        self.db_type_group = QGroupBox("数据源类型")
         self.db_type_group.setFont(self.normal_font)
         self.db_type_layout = QHBoxLayout()
         
-        self.sqlite_radio = QCheckBox("SQLite")
-        self.sqlite_radio.setFont(self.normal_font)
-        self.sqlite_radio.setChecked(True)
+        self.db_type_combo = QComboBox()
+        self.db_type_combo.setFont(self.normal_font)
+        self.db_type_combo.addItem("SQLite")
+        self.db_type_combo.addItem("PostgreSQL")
+        self.db_type_combo.addItem("MySQL")
         
-        self.pgsql_radio = QCheckBox("PostgreSQL")
-        self.pgsql_radio.setFont(self.normal_font)
-        
-        self.mysql_radio = QCheckBox("MySQL")
-        self.mysql_radio.setFont(self.normal_font)
-        
-        self.db_type_layout.addWidget(self.sqlite_radio)
-        self.db_type_layout.addWidget(self.pgsql_radio)
-        self.db_type_layout.addWidget(self.mysql_radio)
+        self.db_type_layout.addWidget(QLabel("当前配置类型："))
+        self.db_type_layout.addWidget(self.db_type_combo)
         self.db_type_layout.addStretch(1)
+        
+        # 添加当前使用的数据源选择
+        self.current_source_label = QLabel("当前使用的数据源：")
+        self.current_source_label.setFont(self.normal_font)
+        self.current_source_combo = QComboBox()
+        self.current_source_combo.setFont(self.normal_font)
+        self.current_source_combo.addItems(["SQLite", "PostgreSQL", "MySQL"])
+        
+        self.db_type_layout.addWidget(self.current_source_label)
+        self.db_type_layout.addWidget(self.current_source_combo)
+        
         self.db_type_group.setLayout(self.db_type_layout)
         self.database_layout.addWidget(self.db_type_group)
         
diff --git a/utils/__pycache__/config_loader.cpython-310.pyc b/utils/__pycache__/config_loader.cpython-310.pyc
deleted file mode 100644
index 924dd84..0000000
Binary files a/utils/__pycache__/config_loader.cpython-310.pyc and /dev/null differ
diff --git a/utils/__pycache__/menu_translator.cpython-310.pyc b/utils/__pycache__/menu_translator.cpython-310.pyc
deleted file mode 100644
index cd70295..0000000
Binary files a/utils/__pycache__/menu_translator.cpython-310.pyc and /dev/null differ
diff --git a/utils/__pycache__/sql_utils.cpython-310.pyc b/utils/__pycache__/sql_utils.cpython-310.pyc
deleted file mode 100644
index a1332ee..0000000
Binary files a/utils/__pycache__/sql_utils.cpython-310.pyc and /dev/null differ
diff --git a/utils/__pycache__/version_manager.cpython-310.pyc b/utils/__pycache__/version_manager.cpython-310.pyc
deleted file mode 100644
index 04c96b8..0000000
Binary files a/utils/__pycache__/version_manager.cpython-310.pyc and /dev/null differ
diff --git a/utils/config_loader.py b/utils/config_loader.py
index 4e4345d..3a06d30 100644
--- a/utils/config_loader.py
+++ b/utils/config_loader.py
@@ -32,6 +32,9 @@ class ConfigLoader:
                 with open(self.config_file, 'r', encoding='utf-8') as f:
                     self.config = json.load(f)
                 logging.info(f"已加载配置文件: {self.config_file}")
+                
+                # 检查并升级配置文件结构（兼容旧版本的配置）
+                self._upgrade_config_if_needed()
             else:
                 # 创建默认配置
                 self.config = {
@@ -40,17 +43,50 @@ class ConfigLoader:
                         "version": "1.0.0",
                         "features": {
                             "enable_serial_ports": False,
-                            "enable_keyboard_listener": False
+                            "enable_keyboard_listener": False,
+                            "enable_camera": False
                         }
                     },
                     "database": {
-                        "type": "sqlite",
-                        "path": "db/jtDB.db",
-                        "host": "",
-                        "port": "",
-                        "user": "",
-                        "password": "",
-                        "name": ""
+                        "current": "sqlite",
+                        "sources": {
+                            "sqlite": {
+                                "path": "db/jtDB.db",
+                                "description": "默认SQLite数据库"
+                            },
+                            "postgresql": {
+                                "host": "localhost",
+                                "port": "5432",
+                                "user": "postgres",
+                                "password": "",
+                                "name": "jtDB",
+                                "description": ""
+                            },
+                            "mysql": {
+                                "host": "localhost",
+                                "port": "3306",
+                                "user": "root",
+                                "password": "",
+                                "name": "jtDB",
+                                "description": ""
+                            }
+                        }
+                    },
+                    "camera": {
+                        "enabled": False,
+                        "default_exposure": 20000,
+                        "default_gain": 10,
+                        "default_framerate": 30
+                    },
+                    "modbus": {
+                        "host": "localhost",
+                        "port": "5020"
+                    },
+                    "serial": {
+                        "keyboard": {
+                            "trigger_key": "Key.page_up",
+                            "enabled": False
+                        }
                     }
                 }
                 
@@ -66,11 +102,87 @@ class ConfigLoader:
                     "version": "1.0.0",
                     "features": {
                         "enable_serial_ports": False,
-                        "enable_keyboard_listener": False
+                        "enable_keyboard_listener": False,
+                        "enable_camera": False
+                    }
+                },
+                "database": {
+                    "current": "sqlite",
+                    "sources": {
+                        "sqlite": {
+                            "path": "db/jtDB.db",
+                            "description": "默认SQLite数据库"
+                        }
                     }
                 }
             }
     
+    def _upgrade_config_if_needed(self):
+        """升级配置文件结构（兼容旧版本的配置）"""
+        try:
+            # 检查数据库配置是否需要升级
+            if 'database' in self.config:
+                db_config = self.config['database']
+                
+                # 旧版本配置结构检查
+                if 'type' in db_config and 'sources' not in db_config:
+                    logging.info("检测到旧版本的数据库配置，正在升级...")
+                    
+                    # 获取旧配置
+                    db_type = db_config.get('type', 'sqlite')
+                    
+                    # 创建新的配置结构
+                    new_db_config = {
+                        "default": db_type,
+                        "sources": {}
+                    }
+                    
+                    # 转移旧配置到新结构
+                    if db_type == 'sqlite':
+                        new_db_config['sources']['sqlite'] = {
+                            "path": db_config.get('path', 'db/jtDB.db'),
+                            "description": "从旧版本升级的SQLite数据库"
+                        }
+                    else:
+                        new_db_config['sources'][db_type] = {
+                            "host": db_config.get('host', 'localhost'),
+                            "port": db_config.get('port', '5432' if db_type == 'postgresql' else '3306'),
+                            "user": db_config.get('user', ''),
+                            "password": db_config.get('password', ''),
+                            "name": db_config.get('name', 'jtDB'),
+                            "description": f"从旧版本升级的{db_type}数据库"
+                        }
+                    
+                    # 确保至少有一个sqlite配置
+                    if 'sqlite' not in new_db_config['sources']:
+                        new_db_config['sources']['sqlite'] = {
+                            "path": "db/jtDB.db",
+                            "description": "默认SQLite数据库"
+                        }
+                    
+                    # 更新配置
+                    self.config['database'] = new_db_config
+                    self.save_config()
+                    logging.info("数据库配置已成功升级")
+                
+                # 将current改为default
+                if 'current' in db_config and 'default' not in db_config:
+                    logging.info("将数据库配置中的'current'改为'default'...")
+                    db_config['default'] = db_config.pop('current')
+                    self.save_config()
+                
+                # 将pgsql改为postgresql
+                if 'sources' in db_config and 'pgsql' in db_config['sources'] and 'postgresql' not in db_config['sources']:
+                    logging.info("将数据库配置中的'pgsql'改为'postgresql'...")
+                    db_config['sources']['postgresql'] = db_config['sources'].pop('pgsql')
+                    # 如果默认值是pgsql，也更新
+                    if db_config.get('default') == 'pgsql':
+                        db_config['default'] = 'postgresql'
+                    self.save_config()
+                    
+        except Exception as e:
+            logging.error(f"升级配置文件结构失败: {e}")
+    
     def save_config(self):
         """保存配置到文件"""
         try:
@@ -163,4 +275,25 @@ class ConfigLoader:
             
         self.config['serial'][key] = config_data
         # 这里不保存配置，等待调用save_config方法时一并保存
-        return True 
\ No newline at end of file
+        return True
+        
+    def get_database_config(self, db_type=None):
+        """
+        获取指定类型的数据库配置
+        
+        Args:
+            db_type: 数据库类型，如'sqlite', 'postgresql', 'mysql'等，不指定则使用默认配置
+            
+        Returns:
+            dict: 数据库配置
+        """
+        # 如果未指定数据库类型，使用当前设置的类型
+        if db_type is None:
+            db_type = self.get_value('database.default', 'sqlite')
+        
+        # 处理pgsql和postgresql兼容
+        if db_type == 'pgsql':
+            db_type = 'postgresql'
+        
+        # 获取数据库配置
+        return self.get_value(f'database.sources.{db_type}', {}) 
\ No newline at end of file
diff --git a/utils/init_db.py b/utils/init_db.py
index ae084ac..79892ea 100644
--- a/utils/init_db.py
+++ b/utils/init_db.py
@@ -2,9 +2,20 @@ from utils.sql_utils import SQLUtils
 import datetime
 import os
 import logging
+from utils.config_loader import ConfigLoader
 
 def init_database():
-    db = SQLUtils('sqlite', database='db/jtDB.db')
+    # 获取SQLite数据源的路径
+    config_loader = ConfigLoader.get_instance()
+    sqlite_config = config_loader.get_database_config('sqlite')
+    db_path = sqlite_config.get('path', 'db/jtDB.db')
+    
+    # 确保db目录存在
+    db_dir = os.path.dirname(db_path)
+    os.makedirs(db_dir, exist_ok=True)
+    
+    logging.info(f"初始化数据库: {db_path}")
+    db = SQLUtils('sqlite', database=db_path)
     
     try:
         db.begin_transaction()
diff --git a/utils/sql_utils.py b/utils/sql_utils.py
index dc145bc..0b31ab7 100644
--- a/utils/sql_utils.py
+++ b/utils/sql_utils.py
@@ -1,4 +1,6 @@
 import sys
+import logging
+from utils.config_loader import ConfigLoader
 
 try:
     import psycopg2
@@ -10,27 +12,127 @@ try:
 except ImportError:
     sqlite3 = None
 
+try:
+    import mysql.connector
+except ImportError:
+    mysql = None
+
 
 class SQLUtils:
-    def __init__(self, db_type, **kwargs):
-        self.db_type = db_type.lower()
+    # 存储连接池，避免重复创建连接
+    _connection_pool = {}
+    
+    def __init__(self, db_type=None, source_name=None, **kwargs):
+        """初始化SQLUtils对象
+        
+        Args:
+            db_type: 数据库类型 'sqlite', 'postgresql', 'mysql' 之一，如果为None则使用配置文件中的默认数据源
+            source_name: 数据源名称，用于从配置中获取特定的数据源，如'sqlite', 'postgresql', 'mysql'
+            **kwargs: 连接参数，如果没有提供，则使用配置文件中的参数
+        """
         self.conn = None
         self.cursor = None
+        
+        # 如果指定了source_name，直接使用该名称的数据源配置
+        if source_name:
+            config_loader = ConfigLoader.get_instance()
+            db_config = config_loader.get_value(f'database.sources.{source_name}', {})
+            if not db_config:
+                raise ValueError(f"未找到数据源配置: {source_name}")
+            
+            db_type = source_name  # 数据源名称同时也是类型
+            
+            if not kwargs:  # 如果没有提供连接参数，则使用配置中的参数
+                if source_name == 'sqlite':
+                    kwargs = {'database': db_config.get('path', 'db/jtDB.db')}
+                else:
+                    kwargs = {
+                        'host': db_config.get('host', 'localhost'),
+                        'user': db_config.get('user', ''),
+                        'password': db_config.get('password', ''),
+                        'database': db_config.get('name', 'jtDB')
+                    }
+                    if 'port' in db_config and db_config['port']:
+                        kwargs['port'] = int(db_config['port'])
+                        
+        # 如果没有指定数据库类型和数据源名称，则使用配置中的默认数据源
+        elif db_type is None:
+            config_loader = ConfigLoader.get_instance()
+            default_source = config_loader.get_value('database.default', 'sqlite')
+            
+            # 如果没有提供连接参数，则从配置文件获取
+            if not kwargs:
+                db_config = config_loader.get_database_config(default_source)
+                if default_source == 'sqlite':
+                    kwargs = {'database': db_config.get('path', 'db/jtDB.db')}
+                else:
+                    kwargs = {
+                        'host': db_config.get('host', 'localhost'),
+                        'user': db_config.get('user', ''),
+                        'password': db_config.get('password', ''),
+                        'database': db_config.get('name', 'jtDB')
+                    }
+                    if 'port' in db_config and db_config['port']:
+                        kwargs['port'] = int(db_config['port'])
+            
+            db_type = default_source
+        
+        self.db_type = db_type.lower()
         self.kwargs = kwargs
+        self.source_name = source_name or self.db_type
+        
+        # 尝试从连接池获取连接，如果没有则创建新连接
+        self._get_connection()
+
+    def _get_connection(self):
+        """从连接池获取连接，如果没有则创建新连接"""
+        # 创建连接键，包含数据库类型和连接参数
+        conn_key = f"{self.db_type}:{str(self.kwargs)}"
+        
+        # 检查连接池中是否已有此连接
+        if conn_key in SQLUtils._connection_pool:
+            try:
+                # 尝试执行简单查询，确认连接有效
+                conn, cursor = SQLUtils._connection_pool[conn_key]
+                cursor.execute("SELECT 1")
+                # 连接有效，直接使用
+                self.conn = conn
+                self.cursor = cursor
+                return
+            except Exception:
+                # 连接已失效，从连接池移除
+                del SQLUtils._connection_pool[conn_key]
+        
+        # 创建新连接
         self.connect()
+        
+        # 将新连接添加到连接池
+        if self.conn and self.cursor:
+            SQLUtils._connection_pool[conn_key] = (self.conn, self.cursor)
 
     def connect(self):
-        if self.db_type == 'pgsql' or self.db_type == 'postgresql':
-            if not psycopg2:
-                raise ImportError('psycopg2 is not installed')
-            self.conn = psycopg2.connect(**self.kwargs)
-        elif self.db_type == 'sqlite' or self.db_type == 'sqlite3':
-            if not sqlite3:
-                raise ImportError('sqlite3 is not installed')
-            self.conn = sqlite3.connect(self.kwargs.get('database', ':memory:'))
-        else:
-            raise ValueError(f'Unsupported db_type: {self.db_type}')
-        self.cursor = self.conn.cursor()
+        """连接到数据库"""
+        try:
+            if self.db_type in ['pgsql', 'postgresql']:
+                if not psycopg2:
+                    raise ImportError('psycopg2 is not installed')
+                self.conn = psycopg2.connect(**self.kwargs)
+            elif self.db_type in ['sqlite', 'sqlite3']:
+                if not sqlite3:
+                    raise ImportError('sqlite3 is not installed')
+                self.conn = sqlite3.connect(self.kwargs.get('database', ':memory:'))
+            elif self.db_type == 'mysql':
+                if not mysql:
+                    raise ImportError('mysql.connector is not installed')
+                self.conn = mysql.connector.connect(**self.kwargs)
+            else:
+                raise ValueError(f'不支持的数据库类型: {self.db_type}')
+            
+            self.cursor = self.conn.cursor()
+            logging.debug(f"成功连接到数据库: {self.db_type}")
+        except Exception as e:
+            logging.error(f"连接数据库失败: {e}")
+            raise
 
     def execute_query(self, sql, params=None):
         if params is None:
@@ -72,7 +174,36 @@ class SQLUtils:
         return self.cursor.fetchall()
 
     def close(self):
-        if self.cursor:
-            self.cursor.close()
-        if self.conn:
-            self.conn.close()
\ No newline at end of file
+        """关闭连接（实际上是将连接返回到连接池）"""
+        # 这里不再实际关闭连接，让连接池管理连接生命周期
+        pass
+    
+    @staticmethod
+    def close_all_connections():
+        """关闭所有连接池中的连接"""
+        for conn, cursor in SQLUtils._connection_pool.values():
+            try:
+                if cursor:
+                    cursor.close()
+                if conn:
+                    conn.close()
+            except Exception as e:
+                logging.error(f"关闭数据库连接失败: {e}")
+        
+        SQLUtils._connection_pool.clear()
+        logging.info("已关闭所有数据库连接")
+    
+    @staticmethod
+    def get_sqlite_connection():
+        """获取SQLite连接"""
+        return SQLUtils(source_name='sqlite')
+    
+    @staticmethod
+    def get_postgresql_connection():
+        """获取PostgreSQL连接"""
+        return SQLUtils(source_name='postgresql')
+    
+    @staticmethod
+    def get_mysql_connection():
+        """获取MySQL连接"""
+        return SQLUtils(source_name='mysql')
\ No newline at end of file
diff --git a/widgets/__pycache__/camera_manager.cpython-310.pyc b/widgets/__pycache__/camera_manager.cpython-310.pyc
deleted file mode 100644
index 4834915..0000000
Binary files a/widgets/__pycache__/camera_manager.cpython-310.pyc and /dev/null differ
diff --git a/widgets/__pycache__/login_widget.cpython-310.pyc b/widgets/__pycache__/login_widget.cpython-310.pyc
deleted file mode 100644
index 96561a0..0000000
Binary files a/widgets/__pycache__/login_widget.cpython-310.pyc and /dev/null differ
diff --git a/widgets/login_widget.py b/widgets/login_widget.py
index 7007981..1a88fea 100644
--- a/widgets/login_widget.py
+++ b/widgets/login_widget.py
@@ -10,7 +10,8 @@ import threading
 def check_user_login(user_id, password):
     """验证用户登录"""
     try:
-        db = SQLUtils('sqlite', database='db/jtDB.db')
+        # 始终使用SQLite数据源验证登录
+        db = SQLUtils(source_name='sqlite')
         db.execute_query("SELECT id FROM user WHERE username = ? AND password = ? AND is_deleted = 0", (user_id, password))
         result = db.fetchone()
         db.close()
@@ -22,7 +23,8 @@ def check_user_login(user_id, password):
 def get_user_info(user_id):
     """获取用户信息"""
     try:
-        db = SQLUtils('sqlite', database='db/jtDB.db')
+        # 始终使用SQLite数据源获取用户信息
+        db = SQLUtils(source_name='sqlite')
         db.execute_query("SELECT username, 'Default Corp', 1, 1 FROM user WHERE username = ?", (user_id,))
         result = db.fetchone()
         db.close()
diff --git a/widgets/main_window.py b/widgets/main_window.py
index 52fc53a..d2c6919 100644
--- a/widgets/main_window.py
+++ b/widgets/main_window.py
@@ -243,8 +243,8 @@ class MainWindow(MainWindowUI):
         self.tray_edit.activated.connect(self.load_finished_inspection_data)  # 当用户选择一项时触发
         
         # 连接按钮事件
-        # self.input_button.clicked.connect(self.handle_input)
-        # self.output_button.clicked.connect(self.handle_output)
+        self.input_button.clicked.connect(self.handle_input)
+        self.output_button.clicked.connect(self.handle_output)
         self.start_button.clicked.connect(self.handle_start)
         self.stop_button.clicked.connect(self.handle_stop)
         
@@ -753,7 +753,7 @@ class MainWindow(MainWindowUI):
                 inspection_dao.save_inspection_data(order_id, data)
             
             # 为贴标和称重也创建空记录
-            for position in [11, 12]:  # 11是贴标，12是称重
+            for position in [11, 12, 13]:  # 11是贴标，12是毛重，13是净重
                 data = [{
                     'position': position,
                     'config_id': position,
@@ -878,13 +878,21 @@ class MainWindow(MainWindowUI):
                 self.save_inspection_data(order_id, tray_id, 11, 11, value, status)
                 
             elif column == packaging_start_col + 1:
-                # 称重列
-                data_type = "称重"
+                # 毛重列
+                data_type = "毛重"
                 self.statusBar().showMessage(f"正在保存称重数据: {value}", 1000)
                 # 设置单元格颜色为通过
                 cell_item.setBackground(QBrush(QColor("#c8e6c9")))  # 浅绿色
-                # 保存称重数据，position和config_id都是12
+                # 保存毛重数据，position和config_id都是12
                 self.save_inspection_data(order_id, tray_id, 12, 12, value, status)
+            elif column == packaging_start_col + 2:
+                # 净重列
+                data_type = "净重"
+                self.statusBar().showMessage(f"正在保存净重数据: {value}", 1000)
+                # 设置单元格颜色为通过
+                cell_item.setBackground(QBrush(QColor("#c8e6c9")))  # 浅绿色
+                # 保存净重数据，position和config_id都是13
+                self.save_inspection_data(order_id, tray_id, 13, 13, value, status)
             
             # 记录详细日志
             logging.info(f"处理单元格变更: 行={row}, 列={column}, 类型={data_type}, 工程号={order_id}, 值={value}, 状态={status}")
@@ -1090,6 +1098,10 @@ class MainWindow(MainWindowUI):
                         # 称重列索引 = 2(序号和工程号) + 检验列数 + 1(贴标)
                         weight_col = 2 + len(enabled_configs) + 1
                         self.process_table.setItem(row_idx, weight_col, QTableWidgetItem(str(value)))
+                    elif position == 13:  # 净重
+                        # 净重列索引 = 2(序号和工程号) + 检验列数 + 2(贴标和称重)
+                        net_weight_col = 2 + len(enabled_configs) + 2
+                        self.process_table.setItem(row_idx, net_weight_col, QTableWidgetItem(str(value)))
                 row_idx += 1
             
             # 设置表格为可编辑状态
@@ -1129,12 +1141,14 @@ class MainWindow(MainWindowUI):
             # 从检验数据中获取贴标和称重数据
             label_value = ""
             weight_value = ""
-            
+            net_weight_value = ""
             for item in inspection_data:
                 if item['position'] == 11:  # 贴标
                     label_value = item['value']
                 elif item['position'] == 12:  # 称重
                     weight_value = item['value']
+                elif item['position'] == 13:  # 净重
+                    net_weight_value = item['value']
             
             # 只要贴标字段有值，就可以写入包装记录
             if not label_value:
@@ -1152,7 +1166,7 @@ class MainWindow(MainWindowUI):
             finish_time = datetime.now()
 
             # 将数据写入到数据库表 inspection_pack_data
-            inspection_dao.save_package_record(order_id, tray_id, label_value, weight_value, finish_time)
+            inspection_dao.save_package_record(order_id, tray_id, label_value, weight_value,net_weight_value, finish_time)
             
             # 回显数据
             self.show_pack_item()
@@ -1223,10 +1237,15 @@ class MainWindow(MainWindowUI):
                 weight_item.setTextAlignment(Qt.AlignCenter)
                 self.record_table.setItem(row_index, 6, weight_item)
 
+                # 净重 - 第8列
+                net_weight_item = QTableWidgetItem(str(item[6]))
+                net_weight_item.setTextAlignment(Qt.AlignCenter)
+                self.record_table.setItem(row_index, 7, net_weight_item)
+
                 # 包装时间
-                pack_time = QTableWidgetItem(str(item[6]))
-                weight_item.setTextAlignment(Qt.AlignCenter)
-                self.record_table.setItem(row_index, 7, pack_time)
+                pack_time = QTableWidgetItem(str(item[7]))
+                pack_time.setTextAlignment(Qt.AlignCenter)
+                self.record_table.setItem(row_index, 8, pack_time)
             # 更新包装记录统计数据
             self.update_package_statistics()
     def update_package_statistics(self):
@@ -1495,6 +1514,8 @@ class MainWindow(MainWindowUI):
             
             # 计算称重列索引 - 称重位置在检验列之后的第二列（贴标后面）
             weight_col = 2 + len(enabled_configs) + 1
+            # 计算净重列索引 - 净重位置在检验列之后的第三列（称重后面）
+            net_weight_col = 2 + len(enabled_configs) + 2
             
             # 获取当前选中的行或第一个数据行
             current_row = self.process_table.currentRow()
@@ -1531,6 +1552,15 @@ class MainWindow(MainWindowUI):
             tray_id = self.tray_edit.currentText()
             self.save_inspection_data(order_id, tray_id, 12, 12, str(weight), "pass")
             
+            # 保存净重到数据库（毛重-工字轮重量，TODO ：先默认工字轮重量为10g后续从接口获取）
+            net_weight = weight - 10
+            self.save_inspection_data(order_id, tray_id, 13, 13, str(net_weight), "pass")
+
+            # 设置净重单元格
+            net_weight_item = QTableWidgetItem(str(net_weight))
+            net_weight_item.setTextAlignment(Qt.AlignCenter)
+            self.process_table.setItem(data_row, net_weight_col, net_weight_item)
+
             # 重新连接信号
             self.process_table.cellChanged.connect(self.handle_inspection_cell_changed)
             
diff --git a/widgets/settings_widget.py b/widgets/settings_widget.py
index d15f8b7..784dc81 100644
--- a/widgets/settings_widget.py
+++ b/widgets/settings_widget.py
@@ -1,9 +1,12 @@
 from PySide6.QtWidgets import QMessageBox, QVBoxLayout
 import logging
+import json
+import os
 from ui.settings_ui import SettingsUI
 from utils.sql_utils import SQLUtils
 from widgets.inspection_settings_widget import InspectionSettingsWidget
 from widgets.pallet_type_settings_widget import PalletTypeSettingsWidget
+from utils.config_loader import ConfigLoader
 
 class SettingsWidget(SettingsUI):
     def __init__(self, parent=None):
@@ -52,19 +55,23 @@ class SettingsWidget(SettingsUI):
         else:
             logging.error("无法找到pallet_type_layout布局")
         
+        # 加载配置文件
+        self.config_loader = ConfigLoader.get_instance()
+        
         # 连接信号和槽
         self.connect_signals()
         
         # 初始化数据库类型UI状态
-        self.update_db_ui_state()
+        self.load_db_config()
         
         logging.info("SettingsWidget初始化完成")
         
     def connect_signals(self):
         # 数据库类型选择
-        self.sqlite_radio.toggled.connect(self.update_db_ui_state)
-        self.pgsql_radio.toggled.connect(self.update_db_ui_state)
-        self.mysql_radio.toggled.connect(self.update_db_ui_state)
+        self.db_type_combo.currentTextChanged.connect(self.update_db_ui_state)
+        
+        # 更新当前使用的数据源
+        self.current_source_combo.currentTextChanged.connect(self.update_default_source)
         
         # 按钮动作
         self.test_conn_button.clicked.connect(self.test_connection)
@@ -80,10 +87,67 @@ class SettingsWidget(SettingsUI):
         if hasattr(self, 'back_button'):
             self.back_button.clicked.connect(self.back_to_main)
     
+    def load_db_config(self):
+        """加载数据库配置"""
+        try:
+            # 获取默认数据源
+            default_source = self.config_loader.get_value('database.default', 'sqlite').lower()
+            
+            # 设置当前使用的数据源组合框
+            self._update_source_combo_items()  # 更新组合框项目
+            
+            index = self.current_source_combo.findText(default_source.capitalize(), Qt.MatchFixedString)
+            if index >= 0:
+                self.current_source_combo.setCurrentIndex(index)
+            
+            # 默认选择当前使用的数据源类型
+            index = self.db_type_combo.findText(default_source.capitalize(), Qt.MatchFixedString)
+            if index >= 0:
+                self.db_type_combo.setCurrentIndex(index)
+                
+            # 更新UI状态
+            self.update_db_ui_state()
+            
+        except Exception as e:
+            logging.error(f"加载数据库配置失败: {e}")
+    
+    def _update_source_combo_items(self):
+        """更新数据源下拉框项目"""
+        try:
+            # 清空当前项目
+            self.current_source_combo.clear()
+            
+            # 获取所有配置的数据源
+            sources = self.config_loader.get_value('database.sources', {})
+            
+            # 添加数据源到下拉框
+            for source_name in sources.keys():
+                # 处理特殊情况：postgresql显示为PostgreSQL
+                display_name = source_name.capitalize()
+                self.current_source_combo.addItem(display_name, source_name)
+                
+        except Exception as e:
+            logging.error(f"更新数据源下拉框失败: {e}")
+            # 添加默认项
+            self.current_source_combo.addItem("SQLite", "sqlite")
+    
     def update_db_ui_state(self):
         """根据选择的数据库类型更新UI状态"""
-        if self.sqlite_radio.isChecked():
-            # SQLite模式下，只需要数据库文件路径
+        db_type = self.db_type_combo.currentText().lower()
+        
+        # 处理特殊情况：PostgreSQL对应postgresql
+        if db_type == "postgresql":
+            db_type = "postgresql"
+        
+        # 加载选定类型的数据源配置
+        config_path = f"database.sources.{db_type}"
+        db_config = {}
+        
+        if db_type == "sqlite":
+            # SQLite模式下，只需要数据库文件路径和说明
+            path = self.config_loader.get_value(f"{config_path}.path", "db/jtDB.db")
+            description = self.config_loader.get_value(f"{config_path}.description", "")
+            
             self.host_input.setEnabled(False)
             self.host_input.setText("")
             self.user_input.setEnabled(False)
@@ -93,41 +157,60 @@ class SettingsWidget(SettingsUI):
             self.port_input.setEnabled(False)
             self.port_input.setText("")
             self.database_input.setEnabled(True)
-            self.database_input.setText("db/jtDB.db")
-        elif self.pgsql_radio.isChecked():
+            self.database_input.setText(path)
+            self.desc_input.setText(description)
+            
+        elif db_type == "postgresql":
             # PostgreSQL模式下，需要完整的连接信息
+            host = self.config_loader.get_value(f"{config_path}.host", "localhost")
+            port = self.config_loader.get_value(f"{config_path}.port", "5432")
+            user = self.config_loader.get_value(f"{config_path}.user", "postgres")
+            password = self.config_loader.get_value(f"{config_path}.password", "")
+            name = self.config_loader.get_value(f"{config_path}.name", "jtDB")
+            description = self.config_loader.get_value(f"{config_path}.description", "")
+            
             self.host_input.setEnabled(True)
-            self.host_input.setText("localhost")
+            self.host_input.setText(host)
             self.user_input.setEnabled(True)
-            self.user_input.setText("postgres")
+            self.user_input.setText(user)
             self.password_input.setEnabled(True)
-            self.password_input.setText("")
+            self.password_input.setText(password)
             self.port_input.setEnabled(True)
-            self.port_input.setText("5432")
+            self.port_input.setText(port)
             self.database_input.setEnabled(True)
-            self.database_input.setText("jtDB")
-        elif self.mysql_radio.isChecked():
+            self.database_input.setText(name)
+            self.desc_input.setText(description)
+            
+        elif db_type == "mysql":
             # MySQL模式下，需要完整的连接信息
+            host = self.config_loader.get_value(f"{config_path}.host", "localhost")
+            port = self.config_loader.get_value(f"{config_path}.port", "3306")
+            user = self.config_loader.get_value(f"{config_path}.user", "root")
+            password = self.config_loader.get_value(f"{config_path}.password", "")
+            name = self.config_loader.get_value(f"{config_path}.name", "jtDB")
+            description = self.config_loader.get_value(f"{config_path}.description", "")
+            
             self.host_input.setEnabled(True)
-            self.host_input.setText("localhost")
+            self.host_input.setText(host)
             self.user_input.setEnabled(True)
-            self.user_input.setText("root")
+            self.user_input.setText(user)
             self.password_input.setEnabled(True)
-            self.password_input.setText("")
+            self.password_input.setText(password)
             self.port_input.setEnabled(True)
-            self.port_input.setText("3306")
+            self.port_input.setText(port)
             self.database_input.setEnabled(True)
-            self.database_input.setText("jtDB")
+            self.database_input.setText(name)
+            self.desc_input.setText(description)
+    
+    def update_default_source(self):
+        """更新默认使用的数据源"""
+        default_source = self.current_source_combo.currentText().lower()
+        self.config_loader.set_value('database.default', default_source)
+        logging.info(f"已更新默认使用的数据源为: {default_source}")
     
     def get_db_type(self):
         """获取当前选择的数据库类型"""
-        if self.sqlite_radio.isChecked():
-            return "sqlite"
-        elif self.pgsql_radio.isChecked():
-            return "pgsql"
-        elif self.mysql_radio.isChecked():
-            return "mysql"
-        return "sqlite"  # 默认返回sqlite
+        return self.db_type_combo.currentText().lower()
     
     def get_connection_params(self):
         """获取数据库连接参数"""
@@ -174,19 +257,42 @@ class SettingsWidget(SettingsUI):
         params = self.get_connection_params()[1]
         desc = self.desc_input.text().strip()
         
-        # 这里应该将设置保存到配置文件中
-        # 为了简单起见，这里只显示一个消息框
-        settings_info = f"数据库类型: {db_type}\n"
-        for key, value in params.items():
-            if key != "password":
-                settings_info += f"{key}: {value}\n"
+        try:
+            # 构建要保存的配置数据
+            config_path = f"database.sources.{db_type}"
+            
+            if db_type == "sqlite":
+                self.config_loader.set_value(f"{config_path}.path", params["database"])
+                self.config_loader.set_value(f"{config_path}.description", desc)
             else:
-                settings_info += f"{key}: {'*' * len(value)}\n"
-        
-        settings_info += f"说明: {desc}"
-        
-        QMessageBox.information(self, "设置已保存", f"数据库设置已保存!\n\n{settings_info}")
-        logging.info(f"数据库设置已保存，类型: {db_type}")
+                self.config_loader.set_value(f"{config_path}.host", params["host"])
+                self.config_loader.set_value(f"{config_path}.port", params["port"])
+                self.config_loader.set_value(f"{config_path}.user", params["user"])
+                self.config_loader.set_value(f"{config_path}.password", params["password"])
+                self.config_loader.set_value(f"{config_path}.name", params["database"])
+                self.config_loader.set_value(f"{config_path}.description", desc)
+                
+            # 更新数据源下拉框
+            self._update_source_combo_items()
+                
+            # 构建要显示的消息
+            settings_info = f"数据库类型: {db_type}\n"
+            for key, value in params.items():
+                if key != "password":
+                    settings_info += f"{key}: {value}\n"
+                else:
+                    settings_info += f"{key}: {'*' * len(value)}\n"
+            
+            settings_info += f"说明: {desc}"
+            
+            # 显示成功消息
+            QMessageBox.information(self, "设置已保存", f"数据库设置已保存!\n\n{settings_info}")
+            logging.info(f"数据库设置已保存，类型: {db_type}")
+            
+        except Exception as e:
+            # 显示错误消息
+            QMessageBox.critical(self, "保存失败", f"保存数据库设置失败!\n\n错误: {str(e)}")
+            logging.error(f"保存数据库设置失败: {str(e)}")
     
     def handle_inspection_configs_changed(self):
         """处理检验配置变更"""