我最近开始学习Flask。我正在尝试连接到本地SQL Server数据库并显示一个表。我不确定我是否正确地执行了连接字符串。
我不确定服务器的密码是什么。在SQL Server Management Studio中与Windows身份验证连接。我是否需要本地数据库的连接字符串?
我不确定该怎么做。我已经为此工作了好几个小时,但实际上我什么都没得到。 pyodbc.connect在pyCharm中连接,但未在浏览器中连接。无论如何尝试,我都会收到错误消息“服务器遇到内部错误,无法完成您的请求。服务器超载或应用程序中有错误。”
from flask import Flask, g, render_template, abort, request
import json
import pypyodbc as pyodbc
##cnxn = pyodbc.connect("Driver={SQL Server Native Client 11.0};"
## "Server=LAPTOP-16DOMG6S\MSSQLSERVER3;"
## "Database=ImportTest;"
## "Trusted_Connection=yes;")
CONNECTION_STRING = 'Driver={ODBC Driver 17 for SQL Server};Server=LAPTOP->16DOMG6S\MSSQLSERVER3;' \
'Database=ImportTest;' \
'Uid = LAPTOP-16DOMG6S\dmc03' \
'Trusted_Connection=yes;'
app = Flask(__name__)
app.config.from_object(__name__)
##Displays the database table in pycharm with pyodbc.connect
##for row in cursor:
## print('row = %r' % (row,))
@app.before_request
def before_request():
try:
g.sql_conn = pyodbc.connect(CONNECTION_STRING, autocommit=True)
except Exception:
abort(500, "No database connection could be established.")
@app.teardown_request
def teardown_request(exception):
try:
g.sql_conn.close()
except AttributeError:
pass
##Landing Page. Connection Working?
@app.route('/', methods=['GET'])
def hello():
return 'This will display article information '
##Display All Articles in Database
@app.route('/articles', methods=['GET'])
def allArticle():
curs = g.sql_conn.cursor()
query = 'select * from ImportTest.dbo.gwTable2 '
curs.execute(query)
columns = [column[0] for column in curs.description]
data = []
for row in curs.fetchall():
data.append(dict(zip(columns, row)))
return json.dumps(data, indent=4, sort_keys=True, default=str)
if __name__ == '__main__':
app.run()
我们将不胜感激
谢谢!
答案 0 :(得分:0)
我注意到在CONNECTION_STRING
变量上方的注释中,您将服务器命名为LAPTOP-16DOMG6S\MSSQLSERVER3
,但在变量中还有一个额外的>
:
# Original
LAPTOP-16DOMG6S\MSSQLSERVER3\
# Variable
LAPTOP->16DOMG6S\MSSQLSERVER3
^
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