fix_bug_log-export_格式和乱码

app/controllers/log.py

@@ -93,16 +93,13 @@ def log_detail(log_id):
 @permission_required('view_logs')  # 替代 @admin_required
 def export_logs():
     """导出日志API"""
-    import csv
-    from io import StringIO
-    from flask import Response
-
     data = request.get_json()
     user_id = data.get('user_id')
     action = data.get('action')
     target_type = data.get('target_type')
     start_date_str = data.get('start_date')
     end_date_str = data.get('end_date')
+    export_format = data.get('format', 'csv')  # 获取导出格式参数
 
     # 处理日期范围
     start_date = None
@@ -129,9 +126,35 @@ def export_logs():
 
     logs = query.all()
 
-    # 生成CSV文件
-    si = StringIO()
-    csv_writer = csv.writer(si)
+    try:
+        # 根据格式选择导出方法
+        if export_format == 'xlsx':
+            return export_as_xlsx(logs)
+        else:
+            return export_as_csv(logs)
+    except Exception as e:
+        # 记录错误以便调试
+        import traceback
+        error_details = traceback.format_exc()
+        current_app.logger.error(f"Export error: {str(e)}\n{error_details}")
+
+        return jsonify({
+            'success': False,
+            'message': f'导出失败: {str(e)}'
+        }), 500
+
+
+def export_as_csv(logs):
+    """导出为CSV格式"""
+    import csv
+    from io import StringIO
+    import base64
+
+    # 创建CSV文件
+    output = StringIO()
+    output.write('\ufeff')  # 添加BOM标记，解决Excel中文乱码
+
+    csv_writer = csv.writer(output)
 
     # 写入标题行
     csv_writer.writerow(['ID', '用户', '操作类型', '目标类型', '目标ID', 'IP地址', '描述', '创建时间'])
@@ -150,25 +173,88 @@ def export_logs():
             log.created_at.strftime('%Y-%m-%d %H:%M:%S')
         ])
 
-    # 设置响应头，使浏览器将其识别为下载文件
+    # 获取CSV字符串并进行Base64编码
+    csv_string = output.getvalue()
+    csv_bytes = csv_string.encode('utf-8')
+    b64_encoded = base64.b64encode(csv_bytes).decode('utf-8')
+
+    # 设置文件名
     filename = f"system_logs_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
 
-    output = si.getvalue()
-
-    # 返回Base64编码的CSV数据
-    import base64
-    encoded_data = base64.b64encode(output.encode('utf-8')).decode('utf-8')
-
     return jsonify({
         'success': True,
         'message': f'已生成 {len(logs)} 条日志记录',
         'count': len(logs),
         'filename': filename,
-        'filedata': encoded_data,
+        'filedata': b64_encoded,
         'filetype': 'text/csv'
     })
 
 
+def export_as_xlsx(logs):
+    """导出为XLSX格式"""
+    import base64
+    from io import BytesIO
+
+    try:
+        # 动态导入openpyxl，如果不存在则抛出异常
+        import openpyxl
+    except ImportError:
+        raise Exception("未安装openpyxl库，无法导出Excel格式。请安装后重试: pip install openpyxl")
+
+    # 创建工作簿和工作表
+    wb = openpyxl.Workbook()
+    ws = wb.active
+    ws.title = "系统日志"
+
+    # 写入标题行
+    headers = ['ID', '用户', '操作类型', '目标类型', '目标ID', 'IP地址', '描述', '创建时间']
+    for col_idx, header in enumerate(headers, 1):
+        ws.cell(row=1, column=col_idx, value=header)
+
+    # 写入数据行
+    for row_idx, log in enumerate(logs, 2):
+        username = log.user.username if log.user else "未登录"
+
+        ws.cell(row=row_idx, column=1, value=log.id)
+        ws.cell(row=row_idx, column=2, value=username)
+        ws.cell(row=row_idx, column=3, value=log.action)
+        ws.cell(row=row_idx, column=4, value=log.target_type or '')
+        ws.cell(row=row_idx, column=5, value=log.target_id or '')
+        ws.cell(row=row_idx, column=6, value=log.ip_address or '')
+        ws.cell(row=row_idx, column=7, value=log.description or '')
+        ws.cell(row=row_idx, column=8, value=log.created_at.strftime('%Y-%m-%d %H:%M:%S'))
+
+    # 调整列宽
+    for col_idx, header in enumerate(headers, 1):
+        column_letter = openpyxl.utils.get_column_letter(col_idx)
+        if header == '描述':
+            ws.column_dimensions[column_letter].width = 40
+        else:
+            ws.column_dimensions[column_letter].width = 15
+
+    # 保存到内存
+    output = BytesIO()
+    wb.save(output)
+    output.seek(0)
+
+    # 编码为Base64
+    xlsx_data = output.getvalue()
+    b64_encoded = base64.b64encode(xlsx_data).decode('utf-8')
+
+    # 设置文件名
+    filename = f"system_logs_{datetime.now().strftime('%Y%m%d_%H%M%S')}.xlsx"
+
+    return jsonify({
+        'success': True,
+        'message': f'已生成 {len(logs)} 条日志记录',
+        'count': len(logs),
+        'filename': filename,
+        'filedata': b64_encoded,
+        'filetype': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+    })
+
+
 @log_bp.route('/api/clear', methods=['POST'])
 @login_required
 @permission_required('view_logs')  # 替代 @admin_required

requirements.txt

@@ -13,4 +13,5 @@ pandas
 flask-login
 openpyxl
 xlrd
-xlsxwriter
+xlsxwriter
+openpyxl