741 lines
24 KiB
Python
741 lines
24 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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现代化Web SQLite数据库查看器
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基于Flask框架，提供自然的内容显示和筛选功能
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"""
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from flask import Flask, render_template, jsonify, request, send_from_directory
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import sqlite3
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import os
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import json
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from datetime import datetime
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from loguru import logger
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app = Flask(__name__)
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# 数据库路径
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DB_PATH = os.path.join(os.path.dirname(__file__), 'product.db')
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class SQLiteWebViewer:
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def __init__(self, db_path):
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self.db_path = db_path
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logger.info(f"初始化Web SQLite查看器，数据库路径: {db_path}")
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def get_tables(self):
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"""获取所有表名"""
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try:
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conn = sqlite3.connect(self.db_path)
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cursor = conn.cursor()
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cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'")
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tables = [row[0] for row in cursor.fetchall()]
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conn.close()
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logger.info(f"获取到 {len(tables)} 个表")
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return tables
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except Exception as e:
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logger.error(f"获取表列表失败: {e}")
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return []
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def get_table_structure(self, table_name):
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"""获取表结构"""
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try:
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conn = sqlite3.connect(self.db_path)
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cursor = conn.cursor()
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cursor.execute(f"PRAGMA table_info({table_name})")
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columns = cursor.fetchall()
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conn.close()
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structure = []
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for col in columns:
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structure.append({
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'cid': col[0],
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'name': col[1],
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'type': col[2],
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'notnull': col[3],
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'default': col[4],
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'pk': col[5]
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})
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logger.info(f"获取表 {table_name} 结构，共 {len(structure)} 个字段")
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return structure
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except Exception as e:
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logger.error(f"获取表结构失败: {e}")
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return []
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def get_table_data(self, table_name, page=1, per_page=50, search_field=None, search_value=None):
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"""获取表数据，支持分页和搜索"""
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try:
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conn = sqlite3.connect(self.db_path)
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cursor = conn.cursor()
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# 获取总记录数
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if search_field and search_value:
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count_query = f"SELECT COUNT(*) FROM {table_name} WHERE {search_field} LIKE ?"
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cursor.execute(count_query, (f'%{search_value}%',))
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else:
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count_query = f"SELECT COUNT(*) FROM {table_name}"
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cursor.execute(count_query)
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total_count = cursor.fetchone()[0]
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# 获取分页数据
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offset = (page - 1) * per_page
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if search_field and search_value:
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data_query = f"SELECT * FROM {table_name} WHERE {search_field} LIKE ? LIMIT ? OFFSET ?"
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cursor.execute(data_query, (f'%{search_value}%', per_page, offset))
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else:
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data_query = f"SELECT * FROM {table_name} LIMIT ? OFFSET ?"
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cursor.execute(data_query, (per_page, offset))
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rows = cursor.fetchall()
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# 获取列名
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cursor.execute(f"PRAGMA table_info({table_name})")
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columns = [col[1] for col in cursor.fetchall()]
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conn.close()
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# 处理数据，检测多行文本
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processed_rows = []
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for row in rows:
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processed_row = []
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for cell in row:
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if cell is None:
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processed_row.append({'value': '', 'type': 'empty'})
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elif isinstance(cell, str) and ('\n' in cell or len(cell) > 100):
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# 多行文本或长文本
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lines = cell.count('\n') + 1
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processed_row.append({
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'value': cell,
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'type': 'multiline',
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'lines': lines,
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'length': len(cell)
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})
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else:
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processed_row.append({'value': str(cell), 'type': 'normal'})
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processed_rows.append(processed_row)
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logger.info(f"获取表 {table_name} 数据，第 {page} 页，共 {len(processed_rows)} 条记录")
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return {
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'columns': columns,
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'rows': processed_rows,
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'total_count': total_count,
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'page': page,
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'per_page': per_page,
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'total_pages': (total_count + per_page - 1) // per_page
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}
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except Exception as e:
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logger.error(f"获取表数据失败: {e}")
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return {'columns': [], 'rows': [], 'total_count': 0, 'page': 1, 'per_page': 50, 'total_pages': 0}
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# 初始化查看器
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viewer = SQLiteWebViewer(DB_PATH)
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@app.route('/')
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def index():
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"""主页"""
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logger.info("访问主页")
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return render_template('index.html')
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@app.route('/api/tables')
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def get_tables():
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"""获取所有表"""
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tables = viewer.get_tables()
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return jsonify({'tables': tables})
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@app.route('/api/table/<table_name>/structure')
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def get_table_structure(table_name):
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"""获取表结构"""
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structure = viewer.get_table_structure(table_name)
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return jsonify({'structure': structure})
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@app.route('/api/table/<table_name>/data')
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def get_table_data(table_name):
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"""获取表数据"""
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page = int(request.args.get('page', 1))
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per_page = int(request.args.get('per_page', 50))
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search_field = request.args.get('search_field')
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search_value = request.args.get('search_value')
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data = viewer.get_table_data(table_name, page, per_page, search_field, search_value)
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return jsonify(data)
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@app.route('/static/<path:filename>')
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def static_files(filename):
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"""静态文件"""
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return send_from_directory('static', filename)
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def create_html_template():
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"""创建HTML模板"""
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template_dir = 'templates'
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if not os.path.exists(template_dir):
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os.makedirs(template_dir)
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html_content = '''<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>SQLite数据库查看器</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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min-height: 100vh;
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color: #333;
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}
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.container {
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max-width: 1400px;
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margin: 0 auto;
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padding: 20px;
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}
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.header {
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background: rgba(255, 255, 255, 0.95);
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backdrop-filter: blur(10px);
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border-radius: 15px;
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padding: 25px;
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margin-bottom: 25px;
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box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
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}
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.header h1 {
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color: #2c3e50;
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font-size: 2.5em;
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margin-bottom: 10px;
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text-align: center;
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}
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.controls {
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display: flex;
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gap: 20px;
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align-items: center;
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flex-wrap: wrap;
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margin-top: 20px;
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}
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.control-group {
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display: flex;
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flex-direction: column;
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gap: 8px;
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}
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.control-group label {
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font-weight: 600;
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color: #34495e;
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font-size: 0.9em;
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}
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select, input {
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padding: 12px 15px;
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border: 2px solid #e0e6ed;
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border-radius: 8px;
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font-size: 14px;
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transition: all 0.3s ease;
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background: white;
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}
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select:focus, input:focus {
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outline: none;
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border-color: #667eea;
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box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
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}
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.btn {
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padding: 12px 24px;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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color: white;
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border: none;
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border-radius: 8px;
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cursor: pointer;
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font-weight: 600;
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transition: all 0.3s ease;
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text-decoration: none;
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display: inline-block;
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}
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.btn:hover {
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transform: translateY(-2px);
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box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
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}
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.data-container {
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background: rgba(255, 255, 255, 0.95);
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backdrop-filter: blur(10px);
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border-radius: 15px;
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padding: 25px;
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box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
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}
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.table-info {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 20px;
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padding: 15px;
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background: #f8f9fa;
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border-radius: 10px;
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}
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.table-info h2 {
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color: #2c3e50;
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font-size: 1.5em;
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}
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.stats {
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display: flex;
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gap: 20px;
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font-size: 0.9em;
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color: #7f8c8d;
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}
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.table-wrapper {
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overflow-x: auto;
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border-radius: 10px;
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box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
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}
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table {
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width: 100%;
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border-collapse: collapse;
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background: white;
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font-size: 14px;
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}
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th {
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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color: white;
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padding: 15px 12px;
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text-align: left;
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font-weight: 600;
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position: sticky;
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top: 0;
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z-index: 10;
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}
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td {
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padding: 12px;
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border-bottom: 1px solid #ecf0f1;
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vertical-align: top;
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}
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tr:nth-child(even) {
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background-color: #f8f9fa;
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}
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tr:hover {
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background-color: #e3f2fd;
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transition: background-color 0.3s ease;
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}
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.multiline-cell {
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white-space: pre-wrap;
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line-height: 1.6;
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max-height: 200px;
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overflow-y: auto;
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padding: 8px;
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background: #fff3cd;
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border-radius: 6px;
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border-left: 4px solid #ffc107;
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}
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.normal-cell {
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white-space: nowrap;
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overflow: hidden;
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text-overflow: ellipsis;
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max-width: 300px;
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}
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.empty-cell {
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color: #95a5a6;
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font-style: italic;
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}
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|
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.pagination {
|
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display: flex;
|
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justify-content: center;
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align-items: center;
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||
gap: 10px;
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margin-top: 25px;
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flex-wrap: wrap;
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}
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|
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.page-info {
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color: #7f8c8d;
|
||
font-weight: 600;
|
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}
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|
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.page-btn {
|
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padding: 8px 12px;
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border: 2px solid #e0e6ed;
|
||
background: white;
|
||
border-radius: 6px;
|
||
cursor: pointer;
|
||
transition: all 0.3s ease;
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min-width: 40px;
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||
text-align: center;
|
||
}
|
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.page-btn:hover {
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border-color: #667eea;
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background: #667eea;
|
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color: white;
|
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}
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||
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.page-btn.active {
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||
background: #667eea;
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color: white;
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border-color: #667eea;
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}
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||
|
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.page-btn:disabled {
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||
opacity: 0.5;
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cursor: not-allowed;
|
||
}
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||
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.loading {
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||
text-align: center;
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||
padding: 40px;
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color: #7f8c8d;
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font-size: 1.1em;
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}
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.error {
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background: #f8d7da;
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color: #721c24;
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padding: 15px;
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border-radius: 8px;
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border: 1px solid #f5c6cb;
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margin: 20px 0;
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||
}
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||
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.no-data {
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||
text-align: center;
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||
padding: 40px;
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color: #7f8c8d;
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||
font-size: 1.1em;
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||
}
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||
|
||
@media (max-width: 768px) {
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.controls {
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flex-direction: column;
|
||
align-items: stretch;
|
||
}
|
||
|
||
.table-info {
|
||
flex-direction: column;
|
||
gap: 15px;
|
||
text-align: center;
|
||
}
|
||
|
||
.stats {
|
||
justify-content: center;
|
||
}
|
||
}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="container">
|
||
<div class="header">
|
||
<h1>🗄️ SQLite数据库查看器</h1>
|
||
<div class="controls">
|
||
<div class="control-group">
|
||
<label for="tableSelect">选择数据表:</label>
|
||
<select id="tableSelect">
|
||
<option value="">加载中...</option>
|
||
</select>
|
||
</div>
|
||
<div class="control-group">
|
||
<label for="searchField">筛选字段:</label>
|
||
<select id="searchField" disabled>
|
||
<option value="">选择字段...</option>
|
||
</select>
|
||
</div>
|
||
<div class="control-group">
|
||
<label for="searchValue">筛选内容:</label>
|
||
<input type="text" id="searchValue" placeholder="输入筛选内容..." disabled>
|
||
</div>
|
||
<button class="btn" onclick="loadData()">刷新数据</button>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="data-container">
|
||
<div class="table-info">
|
||
<h2 id="tableName">请选择数据表</h2>
|
||
<div class="stats">
|
||
<span id="recordCount">记录数: 0</span>
|
||
<span id="pageInfo">第 0 页，共 0 页</span>
|
||
</div>
|
||
</div>
|
||
|
||
<div id="dataContainer">
|
||
<div class="no-data">请选择数据表以查看内容</div>
|
||
</div>
|
||
|
||
<div id="pagination" class="pagination" style="display: none;">
|
||
<button class="page-btn" onclick="changePage('prev')" id="prevBtn">上一页</button>
|
||
<span class="page-info" id="pageInfoDetail"></span>
|
||
<button class="page-btn" onclick="changePage('next')" id="nextBtn">下一页</button>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
<script>
|
||
let currentTable = '';
|
||
let currentPage = 1;
|
||
let perPage = 50;
|
||
let totalPages = 1;
|
||
let currentData = null;
|
||
|
||
// 初始化
|
||
document.addEventListener('DOMContentLoaded', function() {
|
||
loadTables();
|
||
|
||
// 绑定事件
|
||
document.getElementById('tableSelect').addEventListener('change', function() {
|
||
currentTable = this.value;
|
||
currentPage = 1;
|
||
if (currentTable) {
|
||
loadTableStructure();
|
||
loadData();
|
||
}
|
||
});
|
||
|
||
document.getElementById('searchField').addEventListener('change', loadData);
|
||
document.getElementById('searchValue').addEventListener('input', debounce(loadData, 500));
|
||
});
|
||
|
||
// 防抖函数
|
||
function debounce(func, wait) {
|
||
let timeout;
|
||
return function executedFunction(...args) {
|
||
const later = () => {
|
||
clearTimeout(timeout);
|
||
func(...args);
|
||
};
|
||
clearTimeout(timeout);
|
||
timeout = setTimeout(later, wait);
|
||
};
|
||
}
|
||
|
||
// 加载表列表
|
||
async function loadTables() {
|
||
try {
|
||
const response = await fetch('/api/tables');
|
||
const data = await response.json();
|
||
const select = document.getElementById('tableSelect');
|
||
select.innerHTML = '<option value="">选择数据表...</option>';
|
||
|
||
data.tables.forEach(table => {
|
||
const option = document.createElement('option');
|
||
option.value = table;
|
||
option.textContent = table;
|
||
select.appendChild(option);
|
||
});
|
||
} catch (error) {
|
||
console.error('加载表列表失败:', error);
|
||
showError('加载表列表失败: ' + error.message);
|
||
}
|
||
}
|
||
|
||
// 加载表结构
|
||
async function loadTableStructure() {
|
||
if (!currentTable) return;
|
||
|
||
try {
|
||
const response = await fetch(`/api/table/${currentTable}/structure`);
|
||
const data = await response.json();
|
||
const searchField = document.getElementById('searchField');
|
||
|
||
searchField.innerHTML = '<option value="">所有字段</option>';
|
||
data.structure.forEach(field => {
|
||
const option = document.createElement('option');
|
||
option.value = field.name;
|
||
option.textContent = field.name;
|
||
searchField.appendChild(option);
|
||
});
|
||
|
||
searchField.disabled = false;
|
||
document.getElementById('searchValue').disabled = false;
|
||
} catch (error) {
|
||
console.error('加载表结构失败:', error);
|
||
}
|
||
}
|
||
|
||
// 加载数据
|
||
async function loadData() {
|
||
if (!currentTable) return;
|
||
|
||
const container = document.getElementById('dataContainer');
|
||
container.innerHTML = '<div class="loading">📊 数据加载中...</div>';
|
||
|
||
const searchField = document.getElementById('searchField').value;
|
||
const searchValue = document.getElementById('searchValue').value;
|
||
|
||
try {
|
||
let url = `/api/table/${currentTable}/data?page=${currentPage}&per_page=${perPage}`;
|
||
if (searchField && searchValue) {
|
||
url += `&search_field=${searchField}&search_value=${encodeURIComponent(searchValue)}`;
|
||
}
|
||
|
||
const response = await fetch(url);
|
||
currentData = await response.json();
|
||
|
||
displayData(currentData);
|
||
updatePagination();
|
||
|
||
} catch (error) {
|
||
console.error('加载数据失败:', error);
|
||
showError('加载数据失败: ' + error.message);
|
||
}
|
||
}
|
||
|
||
// 显示数据
|
||
function displayData(data) {
|
||
const container = document.getElementById('dataContainer');
|
||
|
||
if (!data.rows || data.rows.length === 0) {
|
||
container.innerHTML = '<div class="no-data">📭 没有找到数据</div>';
|
||
return;
|
||
}
|
||
|
||
let html = '<div class="table-wrapper"><table><thead><tr>';
|
||
|
||
// 表头
|
||
data.columns.forEach(col => {
|
||
html += `<th>${col}</th>`;
|
||
});
|
||
html += '</tr></thead><tbody>';
|
||
|
||
// 数据行
|
||
data.rows.forEach(row => {
|
||
html += '<tr>';
|
||
row.forEach(cell => {
|
||
if (cell.type === 'multiline') {
|
||
html += `<td><div class="multiline-cell">${escapeHtml(cell.value)}</div></td>`;
|
||
} else if (cell.type === 'empty') {
|
||
html += '<td><div class="empty-cell">空</div></td>';
|
||
} else {
|
||
html += `<td><div class="normal-cell">${escapeHtml(cell.value)}</div></td>`;
|
||
}
|
||
});
|
||
html += '</tr>';
|
||
});
|
||
|
||
html += '</tbody></table></div>';
|
||
container.innerHTML = html;
|
||
|
||
// 更新统计信息
|
||
document.getElementById('tableName').textContent = `📋 ${currentTable}`;
|
||
document.getElementById('recordCount').textContent = `记录数: ${data.total_count}`;
|
||
document.getElementById('pageInfo').textContent = `第 ${currentPage} 页，共 ${data.total_pages} 页`;
|
||
}
|
||
|
||
// 更新分页
|
||
function updatePagination() {
|
||
if (!currentData) return;
|
||
|
||
totalPages = currentData.total_pages;
|
||
const pagination = document.getElementById('pagination');
|
||
const prevBtn = document.getElementById('prevBtn');
|
||
const nextBtn = document.getElementById('nextBtn');
|
||
const pageInfo = document.getElementById('pageInfoDetail');
|
||
|
||
if (totalPages <= 1) {
|
||
pagination.style.display = 'none';
|
||
return;
|
||
}
|
||
|
||
pagination.style.display = 'flex';
|
||
|
||
prevBtn.disabled = currentPage <= 1;
|
||
nextBtn.disabled = currentPage >= totalPages;
|
||
|
||
pageInfo.textContent = `${currentPage} / ${totalPages}`;
|
||
}
|
||
|
||
// 翻页
|
||
function changePage(direction) {
|
||
if (direction === 'prev' && currentPage > 1) {
|
||
currentPage--;
|
||
loadData();
|
||
} else if (direction === 'next' && currentPage < totalPages) {
|
||
currentPage++;
|
||
loadData();
|
||
}
|
||
}
|
||
|
||
// HTML转义
|
||
function escapeHtml(text) {
|
||
const div = document.createElement('div');
|
||
div.textContent = text;
|
||
return div.innerHTML;
|
||
}
|
||
|
||
// 显示错误
|
||
function showError(message) {
|
||
const container = document.getElementById('dataContainer');
|
||
container.innerHTML = `<div class="error">❌ ${message}</div>`;
|
||
}
|
||
</script>
|
||
</body>
|
||
</html>'''
|
||
|
||
with open(os.path.join(template_dir, 'index.html'), 'w', encoding='utf-8') as f:
|
||
f.write(html_content)
|
||
|
||
logger.info("HTML模板创建完成")
|
||
|
||
if __name__ == '__main__':
|
||
logger.info("启动Web SQLite查看器")
|
||
|
||
# 创建HTML模板
|
||
create_html_template()
|
||
|
||
# 检查数据库文件
|
||
if not os.path.exists(DB_PATH):
|
||
logger.warning(f"数据库文件不存在: {DB_PATH}")
|
||
logger.info("将创建一个空的数据库用于演示")
|
||
|
||
# 创建示例数据库
|
||
conn = sqlite3.connect(DB_PATH)
|
||
cursor = conn.cursor()
|
||
|
||
# 创建示例表
|
||
cursor.execute('''
|
||
CREATE TABLE IF NOT EXISTS products (
|
||
id INTEGER PRIMARY KEY AUTOINCREMENT,
|
||
name TEXT NOT NULL,
|
||
description TEXT,
|
||
features TEXT,
|
||
price REAL,
|
||
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
|
||
)
|
||
''')
|
||
|
||
# 插入示例数据
|
||
sample_data = [
|
||
('产品A', '这是一个非常优秀的产品\n具有多种实用功能\n用户反馈很好', '高性能\n易用性\n稳定性', 99.99),
|
||
('产品B', '创新设计\n简洁界面\n强大功能', '创新\n美观\n实用', 149.99),
|
||
('产品C', '专业级解决方案\n适用于企业环境\n支持大规模部署', '企业级\n可扩展\n安全', 299.99)
|
||
]
|
||
|
||
cursor.executemany('INSERT INTO products (name, description, features, price) VALUES (?, ?, ?, ?)', sample_data)
|
||
conn.commit()
|
||
conn.close()
|
||
|
||
logger.info("示例数据库创建完成")
|
||
|
||
logger.info(f"Web服务器启动，访问地址: http://localhost:5000")
|
||
logger.info("按 Ctrl+C 停止服务器")
|
||
|
||
app.run(debug=True, host='0.0.0.0', port=5000) |