add：配置跨域

app.py

@@ -12,10 +12,12 @@ from extract_table import extract_temp_time, extract_pdf_table_to_excel, extract
     safe_filename
 from lib import Qiniu
 from werkzeug.utils import secure_filename
+from flask_cors import CORS
 
 app = Flask(__name__)
 UPLOAD_FOLDER = tempfile.gettempdir()
 app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
+CORS(app)
 
 
 @app.route('/add_signature', methods=['POST'])
@@ -125,7 +127,7 @@ def extract_table():
                 if "温湿度数据报告" in text:
                     df = extract_pdf_table_to_excel(filepath)
                 if "历史数据表" in text:
-                    df =  extract_temp_time(filepath)
+                    df = extract_temp_time(filepath)
                 if "设备汇总报告" in text:
                     df = extract_temp_by_datetime_pattern(filepath)