349 lines
12 KiB
Python
349 lines
12 KiB
Python
import sqlite3
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from datetime import datetime
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from flask import Blueprint, jsonify, request
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# 导入数据库工具
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from db_utils import get_db_connection, close_db_connection
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# 创建Flask蓝图
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api_bp = Blueprint('api', __name__)
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# API函数1: 返回最新的参数配置记录
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@api_bp.route('/api/parameters', methods=['GET'])
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def get_parameters():
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try:
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor()
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# 查询所有参数配置记录并只返回第一条（最新的一条）
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cursor.execute("""
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SELECT id, param1, param2, param3, param4, param5, update_time
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FROM parameter_config
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ORDER BY update_time DESC
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LIMIT 1
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""")
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# 获取第一条查询结果
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row = cursor.fetchone()
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# 关闭数据库连接
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close_db_connection(conn)
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# 如果没有查询到数据
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if not row:
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return jsonify({
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'success': False,
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'error': '未找到参数配置记录',
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'data': None
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}), 404
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# 格式化查询结果
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parameter = {
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'id': row[0],
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'param1': row[1],
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'param2': row[2],
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'param3': row[3],
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'param4': row[4],
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'param5': row[5],
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'update_time': row[6]
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}
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# 返回JSON格式的数据
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return jsonify({
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'success': True,
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'data': parameter
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})
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except Exception as e:
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# 确保在异常情况下也关闭连接
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if 'conn' in locals() and conn:
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': str(e),
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'data': []
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}), 500
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# API函数2: 返回query_history表中所有results_count=-1的数据
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@api_bp.route('/api/pending-queries', methods=['GET'])
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def get_pending_queries():
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try:
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor()
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# 查询query_history表中results_count=-1的所有数据
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cursor.execute("""
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SELECT id, query_date, plate_number, phone, results_count, query_ip, user_id
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FROM query_history
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WHERE results_count = -1
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ORDER BY query_date DESC
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""")
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# 获取所有查询结果
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rows = cursor.fetchall()
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# 关闭数据库连接
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close_db_connection(conn)
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# 格式化查询结果
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pending_queries = []
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for row in rows:
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pending_query = {
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'id': row['id'],
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'query_date': row['query_date'],
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'plate_number': row['plate_number'],
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'phone': row['phone'],
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'results_count': row['results_count'],
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'query_ip': row['query_ip'],
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'user_id': row['user_id'] if 'user_id' in row.keys() else None
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}
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pending_queries.append(pending_query)
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# 返回JSON格式的数据
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return jsonify({
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'success': True,
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'data': pending_queries,
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'count': len(pending_queries)
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})
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except Exception as e:
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# 确保在异常情况下也关闭连接
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if 'conn' in locals() and conn:
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': str(e),
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'data': []
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}), 500
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# API函数3: 更新query_history表中对应记录的results_count值，并可选保存车辆信息到car_owner表
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@api_bp.route('/api/update-query-result', methods=['POST'])
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def update_query_result():
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try:
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# 获取前端提交的数据
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data = request.json
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if not data:
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return jsonify({
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'success': False,
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'error': '请求数据不能为空',
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'data': None
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}), 400
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# 检查必要的字段是否存在
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if 'id' not in data or 'results_count' not in data:
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return jsonify({
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'success': False,
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'error': '缺少必要的字段: id 或 results_count',
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'data': None
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}), 400
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# 获取id和results_count值
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query_id = data['id']
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results_count = data['results_count']
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cars_info = data.get('cars_info')
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# 打印当前函数处理的三个关键值
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print(f"update_query_result函数处理的值 - query_id: {query_id}, results_count: {results_count}, cars_info: {cars_info}")
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor()
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# 更新query_history表中的对应记录
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cursor.execute("""
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UPDATE query_history
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SET results_count = ?
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WHERE id = ?
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""", (results_count, query_id))
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# 如果提供了车辆信息，将其保存到car_owner表
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car_owner_ids = []
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if cars_info and isinstance(cars_info, list):
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# 先获取查询历史中的车牌号和手机号，用于关联
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cursor.execute("SELECT plate_number, phone FROM query_history WHERE id = ?", (query_id,))
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query_info = cursor.fetchone()
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if query_info:
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for car_info in cars_info:
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# 提取必要的字段
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plate_number = car_info.get('plate_number', query_info[0])
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phone = car_info.get('mobilephone','')
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id_card = car_info.get('certno', '')
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name = car_info.get('name', '')
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email = car_info.get('email', '')
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address = ''
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# 插入car_owners表，包含所有必要的字段
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cursor.execute("""
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INSERT INTO car_owners (plate_number, phone, id_card, name, email, address, query_history_id)
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VALUES (?, ?, ?, ?, ?, ?, ?)
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RETURNING id
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""", (plate_number, phone, id_card, name, email, address, query_id))
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# 获取插入/更新的记录ID
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result = cursor.fetchone()
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if result:
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car_owner_ids.append(result[0])
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# 提交更改
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conn.commit()
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# 检查query_history表是否有记录被更新
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# 重新查询来确认更新是否成功
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cursor.execute("SELECT 1 FROM query_history WHERE id = ?", (query_id,))
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query_exists = cursor.fetchone() is not None
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# 关闭数据库连接
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close_db_connection(conn)
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# 检查是否存在该记录
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if not query_exists:
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return jsonify({
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'success': False,
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'error': '未找到id为 {} 的记录'.format(query_id),
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'data': None
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}), 404
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# 返回成功响应
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response_data = {
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'id': query_id,
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'results_count': results_count
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}
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# 如果保存了车辆信息，添加到响应数据中
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if car_owner_ids:
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response_data['car_owner_ids'] = car_owner_ids
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return jsonify({
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'success': True,
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'message': '记录更新成功' + ('，并成功保存车辆信息' if car_owner_ids else ''),
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'data': response_data
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})
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# 打印当前函数处理的三个关键值
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print(f"update_query_result函数处理的值 - query_id: {query_id}, results_count: {results_count}, cars_info: {cars_info}")
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except Exception as e:
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# 确保在异常情况下也关闭连接
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if 'conn' in locals() and conn:
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': str(e),
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'data': None
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}), 500
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# API函数4: 保存param4的值到参数配置表
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@api_bp.route('/api/save-param4', methods=['POST'])
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def save_param4():
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try:
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# 获取前端提交的数据
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data = request.json
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if not data:
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return jsonify({
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'success': False,
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'error': '请求数据不能为空',
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'data': None
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}), 400
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# 检查必要的字段是否存在
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if 'param4' not in data:
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return jsonify({
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'success': False,
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'error': '缺少必要的字段: param4',
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'data': None
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}), 400
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# 获取param4值并处理
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param4_value = data['param4']
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# 添加错误处理：确保param4_value是字符串类型或可以转换为字符串
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try:
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# 尝试将param4_value转换为字符串
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if not isinstance(param4_value, str):
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import json
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# 如果是复杂对象，尝试转换为JSON字符串
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param4_value = json.dumps(param4_value)
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except Exception as json_error:
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# 如果转换失败，记录错误并使用字符串表示
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param4_value = str(param4_value)
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# 添加错误处理：限制param4_value的长度，防止过长的数据导致数据库错误
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max_length = 10000 # 可根据数据库字段实际长度调整
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if len(param4_value) > max_length:
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param4_value = param4_value[:max_length] + '...(内容过长已截断)'
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor()
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# 查询是否存在参数配置记录
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cursor.execute("SELECT id FROM parameter_config ORDER BY update_time DESC LIMIT 1")
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row = cursor.fetchone()
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current_time = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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if row:
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# 如果存在记录，更新param4字段
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try:
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cursor.execute("""
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UPDATE parameter_config
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SET param4 = ?, update_time = ?
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WHERE id = ?
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""", (param4_value, current_time, row[0]))
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except Exception as db_error:
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conn.rollback() # 回滚事务
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': f'更新数据库记录时出错: {str(db_error)}',
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'data': None
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}), 500
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else:
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# 如果不存在记录，插入新记录
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try:
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cursor.execute("""
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INSERT INTO parameter_config (param1, param2, param3, param4, param5, update_time)
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VALUES (NULL, NULL, NULL, ?, NULL, ?)
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""", (param4_value, current_time))
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except Exception as db_error:
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conn.rollback() # 回滚事务
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': f'插入数据库记录时出错: {str(db_error)}',
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'data': None
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}), 500
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# 提交更改
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conn.commit()
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# 获取受影响的行数
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affected_rows = cursor.rowcount
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# 关闭数据库连接
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close_db_connection(conn)
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# 检查是否有记录被更新或插入
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if affected_rows == 0:
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return jsonify({
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'success': False,
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'error': '保存param4失败，没有记录被更新或插入',
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'data': None
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}), 500
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# 返回成功响应
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return jsonify({
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'success': True,
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'message': 'param4保存成功',
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'data': {
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'param4': '数据已保存（为避免重复序列化，此处不显示完整内容）'
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}
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})
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except Exception as e:
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# 确保在异常情况下也关闭连接
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if 'conn' in locals() and conn:
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close_db_connection(conn)
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return jsonify({
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'success': False,
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'error': f'服务器内部错误: {str(e)}',
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'data': None
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}), 500 |